This work evaluates the release of phosphorus contained in the digestate from the anaerobic digestion of pig manure, through an acidification process. The objective of this acidification is to increase the amount of phosphorus available in the digestate liquid fraction and, subsequently, recover this element by chemical precipitation in the form of struvite or calcium phosphate. Two digestate samples (one fresh and one old) were studied and treated by adding various amounts of sulphuric acid to the different digestate fractions (raw digestate, solid fraction and liquid fraction). For the raw digestate, phosphorus releases higher than 95% were obtained for pH 4.0. In the last part of the experiment, the influence of acid pre-treatment on the reaction yield of phosphorus precipitation, in the form of struvite or calcium phosphate, was determined. Improvements in reaction yield were obtained up to 15% for struvite and 80% for calcium phosphate, increasing also in 7.5 times the amount of phosphorus available in the digestate liquid fraction, for both cases.
", "keywords": ["Biofertiliser", "FEASIBILITY", "NUTRIENT RECOVERY", "PH", "Struvite", "Swine", "SWINE WASTE-WATER", "0211 other engineering and technologies", "02 engineering and technology", "7. Clean energy", "01 natural sciences", "CALCIUM", "Acidification", "ANAEROBIC-DIGESTION", "Environmental Chemistry", "PHOSPHORUS REMOVAL", "Animals", "Chemical Precipitation", "Toxicology and Mutagenesis", "Anaerobiosis", "Organic waste", "SLUDGE", "0105 earth and related environmental sciences", "Phosphorus", "General Medicine", "Pollution", "6. Clean water", "Manure", "Nutrient recovery", "Health", "Earth and Environmental Sciences", "Release", "PRECIPITATION", "Waste and Biomass Management & Valorization", "CRYSTALLIZATION"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1007/s11356-020-10918-6.pdf"}, {"href": "https://doi.org/10.1007/s11356-020-10918-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20and%20Pollution%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11356-020-10918-6", "name": "item", "description": "10.1007/s11356-020-10918-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11356-020-10918-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-10-03T00:00:00Z"}}, {"id": "10.1016/j.biortech.2017.08.218", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:15:49Z", "type": "Journal Article", "created": "2017-09-04", "title": "Cultivation of Scenedesmus acuminatus in different liquid digestates from anaerobic digestion of pulp and paper industry biosludge", "description": "Different undiluted liquid digestates from mesophilic and thermophilic anaerobic digesters of pulp and paper industry biosludge with and without thermal pretreatment were characterized and utilized for cultivating Scenedesmus acuminatus. Higher S. acuminatus biomass yields were obtained in thermophilic digestates (without and with pretreatment prior to anaerobic digestion (AD): 10.2\u00b12.2 and 10.8\u00b11.2gL-1, respectively) than in pretreated mesophilic digestates (7.8\u00b10.3gL-1), likely due to differences in concentration of sulfate, iron, and/or other minor nutrients. S. acuminatus removed over 97.4% of ammonium and 99.9% of phosphate and sulfate from the digestates. Color (74-80%) and soluble COD (29-39%) of the digestates were partially removed. Different AD processes resulted in different methane yields (18-126L CH4 kg-1VS), digestate compositions, and microalgal yields. These findings emphasize the importance of optimizing each processing step in wood-based biorefineries and provide information for pulp and paper industry development for enhancing value generation.", "keywords": ["13. Climate action", "116 Chemical sciences", "Microalgae", "116", "Anaerobiosis", "Biomass", "Methane", "7. Clean energy", "01 natural sciences", "Scenedesmus", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2017.08.218"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2017.08.218", "name": "item", "description": "10.1016/j.biortech.2017.08.218", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2017.08.218"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-12-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2018.06.099", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:15:50Z", "type": "Journal Article", "created": "2018-07-03", "title": "ADM1 based mathematical model of trace element precipitation/dissolution in anaerobic digestion processes", "description": "Due to the complex biogeochemistry of trace elements (TEs, e.g. Fe, Ni and Co) in anaerobic digestion processes, their role and fate is poorly understood. Challenging, time consuming and low detection limits of analytical procedures necessitate recruitment of mathematical models. A dynamic mathematical model based on anaerobic digestion model no.1 (ADM1) has been proposed to simulate the effect of TEs. New chemical equilibrium association/dissociation and precipitation/dissolution reactions have been implemented to determine TE bioavailability and their effect on anaerobic digestion. The model considers interactions with inorganic carbonate (HCO3- and CO32-), phosphate (PO43-, HPO42-, H2PO4-) and sulfide (HS- and S2-). The effect of deficiency, activation, inhibition and toxicity of TEs on the biochemical processes has been modelled based on a dose-response type inhibition function. The new model can predict: the dynamics of TEs (among carbonate, sulfide and phosphate); the starvation of TEs; and the effect of initial sulfur-phosphorus ratio in an in-silico batch anaerobic system.", "keywords": ["ADM1", "Trace elements", "0211 other engineering and technologies", "Phosphorus", "Precipitation", "02 engineering and technology", "Models", " Theoretical", "01 natural sciences", "7. Clean energy", "Trace Elements", "Bioreactors", "Solubility", "Anaerobic digestion", "Anaerobic digestion; Trace elements; Mathematical modeling; Precipitation; ADM1", "Mathematical modeling", "Anaerobiosis", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2018.06.099"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2018.06.099", "name": "item", "description": "10.1016/j.biortech.2018.06.099", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2018.06.099"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-11-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2018.12.064", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:15:50Z", "type": "Journal Article", "created": "2018-12-22", "title": "ADM1 based mathematical model of trace element complexation in anaerobic digestion processes", "description": "In this study, a new model based on anaerobic digestion model no.1 (ADM1) approach has been proposed to simulate trace elements (TEs) complexation, precipitation and their effect on the anaerobic batch methane production. TEs complexation reactions with VFAs and EDTA have been incorporated in an extended ADM1 model which considers TE precipitation/dissolution reactions as well as biodegradation processes. The kinetic model tracks the dynamics of 90 state variables which constitute the components of the proposed anaerobic digestion (AD) model. The incorporation of the complexation reactions required the definition of new inorganic components (EDTA species) and new complexation process rates in the ADM1 framework. The charge balance was modified accordingly to consider the effects of the additional components. The new model is able to predict: a) the effect of TE-EDTA/VFA complexation on methane production, and b) the effect of the initial calcium and magnesium concentrations on process performance.", "keywords": ["ADM1", "Trace elements", "0211 other engineering and technologies", "02 engineering and technology", "Models", " Theoretical", "Fatty Acids", " Volatile", "01 natural sciences", "7. Clean energy", "Trace Elements", "[SDU] Sciences of the Universe [physics]", "Kinetics", "Biodegradation", " Environmental", "Bioreactors", "13. Climate action", "Anaerobic digestion", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "Complexation", "Mathematical modeling", "Anaerobic digestion; Trace elements; Complexation; Mathematical modeling; ADM1;", "Anaerobiosis", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2018.12.064"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2018.12.064", "name": "item", "description": "10.1016/j.biortech.2018.12.064", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2018.12.064"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-03-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2019.122728", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:15:50Z", "type": "Journal Article", "created": "2020-01-02", "title": "Effects of copper salts on performance, antibiotic resistance genes, and microbial community during thermophilic anaerobic digestion of swine manure", "description": "This study investigated methane production and ARGs reduction during thermophilic AD of swine manure with the addition of different Cu salts (cupric sulfate, cupric glycinate, and the 1:1 mixture of these two salts). Results showed methane production was increased by 28.78% through adding mixed Cu salts. The mixed Cu group effectively reduced total ARGs abundance by 26.94%, suggesting mixed Cu salts did not promote the potential ARGs risk. The positive effects of mixed Cu salts on AD performance and ARGs removal might be ascribed to the low bioavailability. Microbial community analysis indicated the highest abundances of Clostridia_MBA03 and Methanobacterium in the mixed Cu group might cause the increased methane production. Spearman's rank correlation analysis elucidated the succession in microbial community induced by environmental factors was the main driver for shaping ARGs profiles. Thus, mixed Cu salts could be an alternative to replace the inorganic Cu salt in animal feed additives.", "keywords": ["Manure", "Genes", " Bacterial", "Swine", "Microbiota", "Animals", "Drug Resistance", " Microbial", "Anaerobiosis", "01 natural sciences", "Copper", "6. Clean water", "Anti-Bacterial Agents", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2019.122728"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2019.122728", "name": "item", "description": "10.1016/j.biortech.2019.122728", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2019.122728"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2018.10.002", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:16:38Z", "type": "Journal Article", "created": "2018-10-05", "title": "Semi-continuous mono-digestion of OFMSW and Co-digestion of OFMSW with beech sawdust: Assessment of the maximum operational total solid content", "description": "In this study, mono-digestion of the organic fraction of municipal solid waste (OFMSW) and co-digestion of OFMSW with beech sawdust, simulating green waste, were used to investigate the maximum operational total solid (TS) content in semi-continuous high-solids anaerobic digestion (HS-AD). To alleviate substrate overloading in HS-AD, the effluent mass was relatively reduced compared to the influent mass, extending the mass retention time. To this aim, the reactor mass was daily evaluated, permitting to assess the reactor content removal by biogas production. During mono-digestion of OFMSW, the NH3 inhibition and the rapid TS removal prevented to maintain HS-AD conditions (i.e. TS\u202f\u2265\u202f10%), without exacerbating the risk of reactor acidification. In contrast, the inclusion of sawdust in OFMSW permitted to operate HS-AD up to 30% TS, before acidification occurred. Therefore, including a lignocellulosic substrate in OFMSW can prevent acidification and stabilize HS-AD at very high TS contents (i.e. 20-30%).", "keywords": ["[SDE] Environmental Sciences", "[SDV]Life Sciences [q-bio]", "substrate overloading", "Substrate overloading", "High-solids anaerobic digestion", "02 engineering and technology", "Solid Waste", "Influent/effluent uncoupling", "01 natural sciences", "7. Clean energy", "influent/effluent uncoupling", "12. Responsible consumption", "Acidification", "high-solids anaerobic digestion", "acidification", "Bioreactors", "11. Sustainability", "Fagus", "0202 electrical engineering", " electronic engineering", " information engineering", "Anaerobiosis", "ammonia inhibition", "Acidification; Ammonia inhibition; High-solids anaerobic digestion; Influent/effluent uncoupling; Substrate overloading", "0105 earth and related environmental sciences", "Ammonia inhibition", "660", "6. Clean water", "Refuse Disposal", "[SDV] Life Sciences [q-bio]", "13. Climate action", "[SDE]Environmental Sciences", "Methane"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/726869/1/Resubmission%202018_09_07.pdf"}, {"href": "https://hal.inrae.fr/hal-02623440/file/Vicente_Pastor_OFMSW_JEMA-D-18-02234R1.pdf"}, {"href": "https://doi.org/10.1016/j.jenvman.2018.10.002"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jenvman.2018.10.002", "name": "item", "description": "10.1016/j.jenvman.2018.10.002", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jenvman.2018.10.002"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2019.03.014", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:16:38Z", "type": "Journal Article", "created": "2019-03-11", "title": "Modelling non-ideal bio-physical-chemical effects on high-solids anaerobic digestion of the organic fraction of municipal solid waste", "description": "This study evaluates the main effects of including 'non-ideal' bio-physical-chemical corrections in high-solids anaerobic digestion (HS-AD) of the organic fraction of municipal solid waste (OFMSW), at total solid (TS) between 10 and 40%. As a novel approach, a simple 'non-ideal' module, accounting for the effects of ionic strength (I) on the main acid-base equilibriums, was coupled to a HS-AD model, to jointly evaluate the effects of 'non-ideality' and the TS content dynamics on the HS-AD bio-physical-chemistry. 'Non-ideality' influenced the pH, concentration of inhibitors (i.e. NH3), and liquid-gas transfer (i.e. CO2), particularly at higher TS (i.e. \u2265 20%). Meanwhile, fitting the experimental data for batch assays at 15% TS showed that HS-AD of OFMSW might be operated at I\u202f\u2265\u202f0.5\u202fM. Therefore, all HS-AD simulations should account for 'non-ideal' corrections, when assessing the main inhibitory mechanisms (i.e. NH3 buildup and acidification) potentially occurring in HS-AD of OFMSW.", "keywords": ["[SDE] Environmental Sciences", "[SDV]Life Sciences [q-bio]", "high-solids anaerobic digestion model", "Solid Waste", "01 natural sciences", "7. Clean energy", "total solids dynamics", "Refuse Disposal", "12. Responsible consumption", "[SDV] Life Sciences [q-bio]", "Bioreactors", "[SDE]Environmental Sciences", "11. Sustainability", "High-solids anaerobic digestion modelNon-ideal bio-physical-chemical correctionsIonic strengthTotal solids dynamicsAmmonia inhibition", "Anaerobiosis", "ionic strength", "Methane", "ammonia inhibition", "non-ideal bio-physical-chemical corrections", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/746250/1/post-print.pdf"}, {"href": "https://hal.inrae.fr/hal-02623438/file/S0301479719303044.pdf"}, {"href": "https://doi.org/10.1016/j.jenvman.2019.03.014"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jenvman.2019.03.014", "name": "item", "description": "10.1016/j.jenvman.2019.03.014", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jenvman.2019.03.014"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-05-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2020.111632", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:16:38Z", "type": "Journal Article", "created": "2020-12-10", "title": "Coupling anaerobic digestion and pyrolysis processes for maximizing energy recovery and soil preservation according to the circular economy concept", "description": "After press separation of the liquid and solid digestate from an agricultural biogas plant, pyrolysis of solid anaerobic digestate was carried out (i.e., at 500\u00a0\u00b0C, 1h, and 10\u00a0\u00b0C/min) to produce biochar (37.6\u00a0wt%), bio-oil (33.7\u00a0wt%) and syngas (29.3\u00a0wt%). The organic phase of bio-oil and syngas exhibited high and low heating values of 28.4\u00a0MJ/kg and 12.9 MJ/Nm3, respectively. Then, the synergy of coupling biochar with liquid digestate for agronomic purposes was investigated by leaching experiment and growth plant tests on wheat. Leaching experiments using combination of liquid digestate (170\u00a0kg\u00a0N/ha) and biochar demonstrated that biochar addition increases the cumulative leaching of all nutrients, except nitrate, that have a significant decrease of 82% and 91%, respectively at 50 and 100 t/ha, compared to soil treated only with liquid digestate. The co-application of biochar with liquid digestate on growth wheat plant tests demonstrated that biochar application at 50\u00a0t/ha did not exhibit a negative impact on the relative seed germination and improved aerial dry biomass production (up to 27.5%) compared to soil with only liquid digestate addition.", "keywords": ["580", "[SDE] Environmental Sciences", "2. Zero hunger", "[CHIM.GENI] Chemical Sciences/Chemical engineering", "0211 other engineering and technologies", "Agriculture", "02 engineering and technology", "7. Clean energy", "6. Clean water", "Soil", "[CHIM.GENI]Chemical Sciences/Chemical engineering", "Charcoal", "[SDE]Environmental Sciences", "0202 electrical engineering", " electronic engineering", " information engineering", "Anaerobiosis", "Biomass", "Pyrolysis"]}, "links": [{"href": "https://doi.org/10.1016/j.jenvman.2020.111632"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jenvman.2020.111632", "name": "item", "description": "10.1016/j.jenvman.2020.111632", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jenvman.2020.111632"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2020.138080", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:16:52Z", "type": "Journal Article", "created": "2020-03-19", "title": "Stimulation of methane production from benzoate with addition of carbon materials", "description": "Huge amounts of wastewater that contain aromatic compounds such as benzene and phenols are discharged worldwide. Benzoate is a typical intermediate in the anaerobic transformation of those aromatic compounds. In this study, electrically conductive carbon-based materials of granulated activated carbon (GAC), multiwalled carbon nanotubes (MwCNTs), and graphite were evaluated for the ability to promote the benzoate degradation. The results showed that 82\u201393% of the electrons were recovered in CH4 production from benzoate. The carbon materials stimulated benzoate degradation in the sequence of GAC (5 g/L) N MwCNTs (1 g/L) ~ Graphite (0.1 g/L) N Control. Acetate was the only detected intermediate in the process of benzoate degradation. Taxonomic analyses revealed that benzoate was degraded by Syntrophus to acetate and H2, which were subsequently converted to methane by Methanosarcina (both acetoclastic methanogens and hydrogenotrophic methanogens) and Methanoculleus (hydrogenotrophic methanogens), and direct interspecies electron transfer (DIET) of Desulfovibrio and Methanosarcina. Thus, these results suggest a method to effectively enhance the removal of aromatic compounds and methane recovery", "keywords": ["0301 basic medicine", "0303 health sciences", "Nanotubes", " Carbon", "Direct interspecies electron transfer", "Carbon materials", "Benzoates", "6. Clean water", "Benzoate", "Electron Transport", "03 medical and health sciences", "13. Climate action", "Methanosarcina", "Acetoclastic methanogens", "Syntrophus", "Anaerobiosis", "Hydrogenotrophic methanogens", "Methane"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2020.138080"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2020.138080", "name": "item", "description": "10.1016/j.scitotenv.2020.138080", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2020.138080"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-01T00:00:00Z"}}, {"id": "10.2166/wst.2012.618", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:35Z", "type": "Journal Article", "created": "2013-01-11", "description": "This paper projects a positive outcome for large-scale algal biofuel and energy production when wastewater treatment is the primary goal. Such a view arises partly from a recent change in emphasis in wastewater treatment technology, from simply oxidising the organic matter in the waste (i.e. removing the biological oxygen demand) to removing the nutrients \uffe2\uff80\uff93 specifically nitrogen and phosphorus \uffe2\uff80\uff93 which are the root cause of eutrophication of inland waterways and coastal zones. A growing need for nutrient removal greatly improves the prospects for using new algal ponds in wastewater treatment, since microalgae are particularly efficient in capturing and removing such nutrients. Using a spreadsheet model, four scenarios combining algae biomass production with the making of biodiesel, biogas and other products were assessed for two of Australia\uffe2\uff80\uff99s largest wastewater treatment plants. The results showed that super critical water reactors and anaerobic digesters could be attractive pathway options, the latter providing significant savings in greenhouse gas emissions. Combining anaerobic digestion with oil extraction and the internal economies derived from cheap land and recycling of water and nutrients on-site could allow algal oil to be produced for less than US$1 per litre.
", "keywords": ["Wastewater", "01 natural sciences", "7. Clean energy", "6. Clean water", "12. Responsible consumption", "Waste Management", "Chlorophyta", "13. Climate action", "Biofuels", "11. Sustainability", "Anaerobiosis", "Biomass", "Oils", "Carbon Footprint", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Greg Threlfall, Tim Grant, Kurt Liffman, Tony Priestley, David F. Batten, George Freischmidt, D.A. Paterson, Tom Beer, Lucas Rye,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2166/wst.2012.618"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Science%20and%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2166/wst.2012.618", "name": "item", "description": "10.2166/wst.2012.618", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2166/wst.2012.618"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-02-01T00:00:00Z"}}, {"id": "10.1016/j.wasman.2021.04.006", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:17:23Z", "type": "Journal Article", "created": "2021-04-18", "title": "Closing nutrient loops in a maize rotation. Catch crops to reduce nutrient leaching and increase biogas production by anaerobic co-digestion with dairy manure", "description": "Three catch crop species, ryegrass, forage rape and black oat, were grown between successive rotations of maize to reduce nitrogen leaching due to maize fertilization with digested dairy manure. Catch crops showed a high nutrient uptake, but with a wide range, depending on the year and the specie. Ensiling was shown to be a feasible storing method increasing catch crop methane production per hectare between 14-36% compared with fresh catch crop. In semi-continuous co-digestion experiments, methane production was increased between 35-48%, in comparison with anaerobic digestion of dairy manure alone. Catch crops were shown to be a good co-substrate, being a sustainable option to prevent leaching of nutrients to the environment, thus closing the loops from production to utilization by optimal recycling measures.", "keywords": ["2. Zero hunger", "Nutrients", "15. Life on land", "Zea mays", "01 natural sciences", "7. Clean energy", "12. Responsible consumption", "Manure", "619", "Biofuels", "Digestion", "Anaerobiosis", "Methane", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.wasman.2021.04.006"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Waste%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.wasman.2021.04.006", "name": "item", "description": "10.1016/j.wasman.2021.04.006", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.wasman.2021.04.006"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-05-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2018.06.016", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:17:23Z", "type": "Journal Article", "created": "2018-06-14", "title": "High-solids anaerobic digestion model for homogenized reactors", "description": "During high-solids anaerobic digestion (HS-AD) of the organic fraction of municipal solid waste (OFMSW), an important total solid (TS) removal occurs, leading to the modification of the reactor content mass/volume, in contrast to 'wet' anaerobic digestion (AD). Therefore, HS-AD mathematical simulations need to be approached differently than 'wet' AD simulations. This study aimed to develop a modelling tool based on the anaerobic digestion model 1 (ADM1) capable of simulating the TS and the reactor mass/volume dynamics in HS-AD of OFMSW. Four hypotheses were used, including the effects of apparent concentrations at high TS. The model simulated adequately HS-AD of OFMSW in batch and continuous mode, particularly the evolution of TS, reactor mass, ammonia and volatile fatty acids. By adequately simulating the reactor content mass/volume and the TS, the HS-AD model might bring further insight about potentially inhibitory mechanisms (i.e. NH3 buildup and/or acidification) occurring in HS-AD of OFMSW.", "keywords": ["[SDE] Environmental Sciences", "ADM1", "570", "[SDV]Life Sciences [q-bio]", "High-solids anaerobic digestion", " ADM1", " Reactor mass simulation", " Total solids", " Apparent concentrations", "0211 other engineering and technologies", "High-solids anaerobic digestion", "02 engineering and technology", "Solid Waste", "01 natural sciences", "7. Clean energy", "Reactor mass simulation", "total solids", "12. Responsible consumption", "high-solids anaerobic digestion", "Bioreactors", "Ammonia", "Apparent concentrations", "reactor mass simulation", "Anaerobiosis", "0105 earth and related environmental sciences", "apparent concentrations", "Total solids", "Models", " Theoretical", "Fatty Acids", " Volatile", "6. Clean water", "Refuse Disposal", "[SDV] Life Sciences [q-bio]", "[SDE]Environmental Sciences"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/718585/1/1-s2.0-S0043135418304603-main.pdf"}, {"href": "https://doi.org/10.1016/j.watres.2018.06.016"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.watres.2018.06.016", "name": "item", "description": "10.1016/j.watres.2018.06.016", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2018.06.016"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-10-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2019.114932", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:17:23Z", "type": "Journal Article", "created": "2019-07-30", "title": "Assessing practical identifiability during calibration and cross-validation of a structured model for high-solids anaerobic digestion", "description": "High-solids anaerobic digestion (HS-AD) of the organic fraction of municipal solid waste (OFMSW) is operated at a total solid (TS) content\u202f\u2265\u202f10% to enhance the waste treatment economy, though it might be associated to free ammonia (NH3) inhibition. This study aimed to calibrate and cross-validate a HS-AD model for homogenized reactors in order to assess the effects of high NH3 levels in HS-AD of OFMSW, but also to evaluate the suitability of the reversible non-competitive inhibition function to reproduce the effect of NH3 on the main acetogenic and methanogenic populations. The practical identifiability of structural/biochemical parameters (i.e. 35) and initial conditions (i.e. 32) was evaluated using batch experiments at different TS and/or inoculum-to-substrate ratios. Variance-based global sensitivity analysis and approximate Bayesian computation were used for parameter optimization. The experimental data in this study permitted to estimate up to 8 biochemical parameters, whereas the rest of parameters and biomass contents were poorly identifiable. The study also showed the relatively high levels of NH3 (i.e. up to 2.3\u202fg\u202fN/L) and ionic strength (i.e. up to 0.9\u202fM) when increasing TS in HS-AD of OFMSW. However, the NH3 non-competitive function was unable to capture the acetogenic/methanogenic inhibition. Therefore, the calibration emphasized the need for target-oriented experimental data to enhance the practical identifiability and the predictive capabilities of structured HS-AD models, but also the need for further testing the NH3 inhibition function used in these simulations.", "keywords": ["[SDE] Environmental Sciences", "[SDV]Life Sciences [q-bio]", "0207 environmental engineering", "high-solids anaerobic digestion model", "Bayes Theorem", "02 engineering and technology", "Solid Waste", "01 natural sciences", "7. Clean energy", "6. Clean water", "Refuse Disposal", "12. Responsible consumption", "[SDV] Life Sciences [q-bio]", "High-solids anaerobic digestion model", " ammonia inhibition", " ionic strength", " global sensitivity analysis", " approximate bayesian computation", "Bioreactors", "global sensitivity analysis", "[SDE]Environmental Sciences", "Calibration", "High-solids anaerobic digestion model", "Anaerobiosis", "ionic strength", "Methane", "ammonia inhibition", "approximate bayesian computation", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/757589/1/Post-print%20for%20IRIS.pdf"}, {"href": "https://hal.inrae.fr/hal-02623443/file/S0043135419307067.pdf"}, {"href": "https://doi.org/10.1016/j.watres.2019.114932"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.watres.2019.114932", "name": "item", "description": "10.1016/j.watres.2019.114932", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2019.114932"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-11-01T00:00:00Z"}}, {"id": "10.1021/es3024435", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:17:31Z", "type": "Journal Article", "created": "2012-11-05", "title": "Bioenergy Production From Perennial Energy Crops: A Consequential Lca Of 12 Bioenergy Scenarios Including Land Use Changes", "description": "In the endeavor of optimizing the sustainability of bioenergy production in Denmark, this consequential life cycle assessment (LCA) evaluated the environmental impacts associated with the production of heat and electricity from one hectare of Danish arable land cultivated with three perennial crops: ryegrass (Lolium perenne), willow (Salix viminalis) and Miscanthus giganteus. For each, four conversion pathways were assessed against a fossil fuel reference: (I) anaerobic co-digestion with manure, (II) gasification, (III) combustion in small-to-medium scale biomass combined heat and power (CHP) plants and IV) co-firing in large scale coal-fired CHP plants. Soil carbon changes, direct and indirect land use changes as well as uncertainty analysis (sensitivity, MonteCarlo) were included in the LCA. Results showed that global warming was the bottleneck impact, where only two scenarios, namely willow and Miscanthus co-firing, allowed for an improvement as compared with the reference (-82 and -45 t CO\u2082-eq. ha\u207b\u00b9, respectively). The indirect land use changes impact was quantified as 310 \u00b1 170 t CO\u2082-eq. ha\u207b\u00b9, representing a paramount average of 41% of the induced greenhouse gas emissions. The uncertainty analysis confirmed the results robustness and highlighted the indirect land use changes uncertainty as the only uncertainty that can significantly change the outcome of the LCA results.", "keywords": ["Crops", " Agricultural", "Manures", "Nitrogen", "Life cycle", "Coal gasification plants", "Sus scrofa", "0211 other engineering and technologies", "Crops", "02 engineering and technology", "/dk/atira/pure/sustainabledevelopmentgoals/responsible_consumption_and_production; name=SDG 12 - Responsible Consumption and Production", "Global Warming", "7. Clean energy", "Environmental impact", "/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energy; name=SDG 7 - Affordable and Clean Energy", "Anaerobic digestion", "11. Sustainability", "0202 electrical engineering", " electronic engineering", " information engineering", "Animals", "Anaerobiosis", "Gas emissions", "2. Zero hunger", "Fossil fuels", "Global warming", "/dk/atira/pure/sustainabledevelopmentgoals/life_on_land; name=SDG 15 - Life on Land", "Agriculture", "Carbon Dioxide", "15. Life on land", "Carbon", "Coal combustion", "Manure", "Greenhouse gases", "Carbon dioxide", "13. Climate action", "Biofuels", "Land use", "Uncertainty analysis", "Cogeneration plants", "Power generation"]}, "links": [{"href": "https://doi.org/10.1021/es3024435"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20%26amp%3B%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1021/es3024435", "name": "item", "description": "10.1021/es3024435", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/es3024435"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-11-30T00:00:00Z"}}, {"id": "10.1080/09593330.2013.824012", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:18:21Z", "type": "Journal Article", "created": "2013-08-20", "title": "Household Anaerobic Digester For Bioenergy Production In Developing Countries: Opportunities And Challenges", "description": "Access to clean and affordable energy is vital for advancing development objectives, particularly in rural areas of developing countries. There are some three billion people in these regions, however, who lack consistent access to energy and rely on traditional solid fuels such as firewood, cattle manure, and crop residues for meeting cooking and heating needs. Excessive use of such highly polluting resources creates serious environmental, social and public health issues. In this context, household digesters (which convert readily available feedstocks such as cattle manure, human excreta, and crop residues into biogas) have the potential to play a significant role in supplying methane as a clean, renewable energy resource for remote geographies. In addition to bioenergy production, the slurry generated from anaerobic digestion is rich in nutrients and can improve the physical, chemical, and biological attributes of soil when applied to agricultural land. This type of approach has the potential to significantly reduce greenhouse gas emissions while simultaneously improving the quality of life. Despite a long history of research and innovation for the development and optimization of household digesters, little is known and has been reported for the application of these systems in decentralized communities. The primary purpose of this paper seeks to review the dearth of literature pertaining to small-scale anaerobic digesters in remote geographies and in regions where much of the world's population reside.", "keywords": ["2. Zero hunger", "Sewage", "1. No poverty", "02 engineering and technology", "15. Life on land", "Waste Disposal", " Fluid", "01 natural sciences", "7. Clean energy", "6. Clean water", "Refuse Disposal", "12. Responsible consumption", "Manure", "Bioreactors", "13. Climate action", "Biofuels", "11. Sustainability", "0202 electrical engineering", " electronic engineering", " information engineering", "Animals", "Humans", "Cattle", "Anaerobiosis", "Biomass", "Developing Countries", "Biotechnology", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1080/09593330.2013.824012"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/09593330.2013.824012", "name": "item", "description": "10.1080/09593330.2013.824012", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/09593330.2013.824012"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-07-01T00:00:00Z"}}, {"id": "10.1111/1751-7915.13654", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:18:43Z", "type": "Journal Article", "created": "2020-08-31", "title": "An underappreciated DIET for anaerobic petroleum hydrocarbon\u2010degrading microbial communities", "description": "Direct interspecies electron transfer (DIET) via electrically conductive minerals can play a role in the anaerobic oxidation of petroleum hydrocarbons in contaminated sites and can be exploited for the development of new, more effective bioremediation approaches.", "keywords": ["0301 basic medicine", "H100", "0303 health sciences", "petroleum hydrocarbon", "anaerobic degradation", "Microbiota", "H800", "Hydrocarbons", "6. Clean water", "DIET", "03 medical and health sciences", "Biodegradation", " Environmental", "Petroleum", "Soil Pollutants", "Anaerobiosis", "Crystal Ball", "TP248.13-248.65", "Biotechnology"]}, "links": [{"href": "https://nrl.northumbria.ac.uk/id/eprint/44983/8/1751-7915.13654.pdf"}, {"href": "https://iris.cnr.it/bitstream/20.500.14243/394172/1/An%20underappreciated%20DIET%20for%20anaerobic%20petroleum.pdf"}, {"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/1751-7915.13654"}, {"href": "https://eprints.ncl.ac.uk/fulltext.aspx?url=270998/E5D81B02-CB5D-4798-8D73-9D54E5057C34.pdf&pub_id=270998"}, {"href": "https://doi.org/10.1111/1751-7915.13654"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microbial%20Biotechnology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/1751-7915.13654", "name": "item", "description": "10.1111/1751-7915.13654", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/1751-7915.13654"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-08-30T00:00:00Z"}}, {"id": "10.1111/1758-2229.13114", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-29T16:18:44Z", "type": "Journal Article", "created": "2022-08-09", "title": "N\u2010damo, an opportunity to reduce methane emissions?", "description": "H2020 MGA EJP Cofund, EJP SOIL (TRACE-Soils), Grant/Award Number: 862695; HORIZON CSA, Project PREPSOIL, Grant/Award Number: 101070045", "keywords": ["Highlight", "0301 basic medicine", "2. Zero hunger", "0303 health sciences", "15. Life on land", "7. Clean energy", "6. Clean water", "12. Responsible consumption", "03 medical and health sciences", "13. Climate action", "11. Sustainability", "Denitrification", "Anaerobiosis", "Methane", "Oxidation-Reduction", "Nitrites"], "contacts": [{"organization": "G\u00f3mez\u2010Gallego, Tamara", "roles": ["creator"]}]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/1758-2229.13114"}, {"href": "https://doi.org/10.1111/1758-2229.13114"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Microbiology%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/1758-2229.13114", "name": "item", "description": "10.1111/1758-2229.13114", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/1758-2229.13114"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-08-09T00:00:00Z"}}, {"id": "10.1155/2019/1751783", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:19:26Z", "type": "Journal Article", "created": "2019-05-02", "title": "Acetotrophic Activity Facilitates Methanogenesis from LCFA at Low Temperatures: Screening from Mesophilic Inocula", "description": "The inoculum source plays a crucial role in the anaerobic treatment of wastewaters. Lipids are present in various wastewaters and have a high methanogenic potential, but their hydrolysis results in the production of long chain fatty acids (LCFAs) that are inhibitory to anaerobic microorganisms. Screening of inoculum for the anaerobic treatment of LCFA-containing wastewaters has been performed at mesophilic and thermophilic conditions. However, an evaluation of inocula for producing methane from LCFA-containing wastewater has not yet been conducted at low temperatures and needs to be undertaken. In this study, three inocula (one granular sludge and two municipal digester sludges) were assessed for methane production from LCFA-containing synthetic dairy wastewater (SDW) at low temperatures (10 and 20\uffc2\uffb0C). A methane yield (based on mL-CH4/g-CODadded) of 86-65% with acetate and 45-20% with SDW was achieved within 10 days using unacclimated granular sludge, whereas the municipal digester sludges produced methane only at 20\uffc2\uffb0C but not at 10\uffc2\uffb0C even after 200 days of incubation. The acetotrophic activity in the inoculum was found to be crucial for methane production from LCFA at low temperatures, highlighting the role ofMethanosaeta(acetoclastic archaea) at low temperatures. The presence of bacterial taxa from the familySyntrophaceae(Syntrophusand uncultured taxa) in the inoculum was found to be important for methane production from SDW at 10\uffc2\uffb0C. This study suggests the evaluation of acetotrophic activity and the initial microbial community characteristics by high-throughput amplicon sequencing for selecting the inoculum for producing methane at low temperatures (up to 10\uffc2\uffb0C) from lipid-containing wastewaters.
", "keywords": ["Deltaproteobacteria", "0301 basic medicine", "570", "0303 health sciences", "Sewage", "218 Environmental engineering", "Microbiota", "116 Chemical sciences", "Fatty Acids", "Temperature", "116", "Acetates", "Methanosarcinales", "6. Clean water", "03 medical and health sciences", "218", "13. Climate action", "11. Sustainability", "Anaerobiosis", "Methane", "Research Article"]}, "links": [{"href": "https://doi.org/10.1155/2019/1751783"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Archaea", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1155/2019/1751783", "name": "item", "description": "10.1155/2019/1751783", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1155/2019/1751783"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-05-02T00:00:00Z"}}, {"id": "10.2139/ssrn.4633350", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:20:34Z", "type": "Journal Article", "created": "2023-11-14", "title": "Nutrient Recovery from Digestate: Pilot Test Experiments", "description": "A series of technologies have been employed in pilot-scale to process digestate, i.e. the byproduct remaining after the anaerobic digestion of agricultural and other wastes, with the aim of recovering nutrients and reducing the load of solids and organics from it, hence improving the quality of digestate for potential subsequent reuse. In this case the digestate originated from a mixture of dairy and animal wastes and a small amount of agricultural wastes. It was processed by the application of several treatments, applied in series, i.e. microfiltration, ultrafiltration, reverse osmosis, selective electrodialysis and combined UV/ozonation. The initially applied membrane filtration methods (micro- and ultra-filtration) removed most of the suspended solids and macromolecules with a combined efficiency of more than 80%, while the reverse osmosis (at the end) removed almost all the remaining solutes (85-100%), producing sufficiently clarified water, appropriate for potential reuse. In the selective electrodialysis unit over 95% of ammonium and potassium were recovered from the feed, along with 55% of the phosphates. Of the latter, 75% was retrieved in the form of struvite.", "keywords": ["Struvite", "Ammonium Compounds", "Animals", "Anaerobiosis", "Nutrients", "Phosphates"]}, "links": [{"href": "https://doi.org/10.2139/ssrn.4633350"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2139/ssrn.4633350", "name": "item", "description": "10.2139/ssrn.4633350", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2139/ssrn.4633350"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-01-01T00:00:00Z"}}, {"id": "10.3390/molecules25122723", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:21:12Z", "type": "Journal Article", "created": "2020-06-16", "title": "Ammonium Recovery and Biogas Upgrading in a Tubular Micro-Pilot Microbial Electrolysis Cell (MEC)", "description": "Here, a 12-liter tubular microbial electrolysis cell (MEC) was developed as a post treatment unit for simultaneous biogas upgrading and ammonium recovery from the liquid effluent of an anaerobic digestion process. The MEC configuration adopted a cation exchange membrane to separate the inner anodic chamber and the external cathodic chamber, which were filled with graphite granules. The cathodic chamber performed the CO2 removal through the bioelectromethanogenesis reaction and alkalinity generation while the anodic oxidation of a synthetic fermentate partially sustained the energy demand of the process. Three different nitrogen load rates (73, 365, and 2229 mg N/Ld) were applied to the inner anodic chamber to test the performances of the whole process in terms of COD (Chemical Oxygen Demand) removal, CO2 removal, and nitrogen recovery. By maintaining the organic load rate at 2.55 g COD/Ld and the anodic chamber polarization at +0.2 V vs. SHE (Standard Hydrogen Electrode), the increase of the nitrogen load rate promoted the ammonium migration and recovery, i.e., the percentage of current counterbalanced by the ammonium migration increased from 1% to 100% by increasing the nitrogen load rate by 30-fold. The CO2 removal slightly increased during the three periods, and permitted the removal of 65% of the influent CO2, which corresponded to an average removal of 2.2 g CO2/Ld. During the operation with the higher nitrogen load rate, the MEC energy consumption, which was simultaneously used for the different operations, was lower than the selected benchmark technologies, i.e., 0.47 kW/N\uffc2\uffb7m3 for CO2 removal and 0.88 kW\uffc2\uffb7h/kg COD for COD oxidation were consumed by the MEC while the ammonium nitrogen recovery consumed 2.3 kW\uffc2\uffb7h/kg N.
", "keywords": ["Bioelectric Energy Sources", "Nitrogen", "Organic chemistry", "Pilot Projects", "Waste Disposal", " Fluid", "01 natural sciences", "7. Clean energy", "Article", "Electrolysis", "biogas upgrading", " nitrogen recovery", " microbial electrolysis cell", " bioelectromethanogenesis", " digestate", "biogas upgrading", "QD241-441", "Bioreactors", "Ammonium Compounds", "Anaerobiosis", "Cation Exchange Resins", "Electrodes", "0105 earth and related environmental sciences", "Biological Oxygen Demand Analysis", "Electrochemical Techniques", "microbial electrolysis cell", "6. Clean water", "Biodegradation", " Environmental", "13. 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Results showed methane production was increased by 28.78% through adding mixed Cu salts. The mixed Cu group effectively reduced total ARGs abundance by 26.94%, suggesting mixed Cu salts did not promote the potential ARGs risk. The positive effects of mixed Cu salts on AD performance and ARGs removal might be ascribed to the low bioavailability. Microbial community analysis indicated the highest abundances of Clostridia_MBA03 and Methanobacterium in the mixed Cu group might cause the increased methane production. Spearman's rank correlation analysis elucidated the succession in microbial community induced by environmental factors was the main driver for shaping ARGs profiles. Thus, mixed Cu salts could be an alternative to replace the inorganic Cu salt in animal feed additives.", "keywords": ["Manure", "Genes", " Bacterial", "Swine", "Microbiota", "Animals", "Drug Resistance", " Microbial", "Anaerobiosis", "01 natural sciences", "Copper", "6. 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Benzoate is a typical intermediate in the anaerobic transformation of those aromatic compounds. In this study, electrically conductive carbon-based materials of granulated activated carbon (GAC), multiwalled carbon nanotubes (MwCNTs), and graphite were evaluated for the ability to promote the benzoate degradation. The results showed that 82\u201393% of the electrons were recovered in CH4 production from benzoate. The carbon materials stimulated benzoate degradation in the sequence of GAC (5 g/L) N MwCNTs (1 g/L) ~ Graphite (0.1 g/L) N Control. Acetate was the only detected intermediate in the process of benzoate degradation. Taxonomic analyses revealed that benzoate was degraded by Syntrophus to acetate and H2, which were subsequently converted to methane by Methanosarcina (both acetoclastic methanogens and hydrogenotrophic methanogens) and Methanoculleus (hydrogenotrophic methanogens), and direct interspecies electron transfer (DIET) of Desulfovibrio and Methanosarcina. 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Benzoate is a typical intermediate in the anaerobic transformation of those aromatic compounds. In this study, electrically conductive carbon-based materials of granulated activated carbon (GAC), multiwalled carbon nanotubes (MwCNTs), and graphite were evaluated for the ability to promote the benzoate degradation. The results showed that 82\u201393% of the electrons were recovered in CH4 production from benzoate. The carbon materials stimulated benzoate degradation in the sequence of GAC (5 g/L) N MwCNTs (1 g/L) ~ Graphite (0.1 g/L) N Control. Acetate was the only detected intermediate in the process of benzoate degradation. Taxonomic analyses revealed that benzoate was degraded by Syntrophus to acetate and H2, which were subsequently converted to methane by Methanosarcina (both acetoclastic methanogens and hydrogenotrophic methanogens) and Methanoculleus (hydrogenotrophic methanogens), and direct interspecies electron transfer (DIET) of Desulfovibrio and Methanosarcina. Thus, these results suggest a method to effectively enhance the removal of aromatic compounds and methane recovery", "keywords": ["0301 basic medicine", "0303 health sciences", "Nanotubes", " Carbon", "Direct interspecies electron transfer", "Carbon materials", "Benzoates", "6. Clean water", "Benzoate", "Electron Transport", "03 medical and health sciences", "13. 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In this case the digestate originated from a mixture of dairy and animal wastes and a small amount of agricultural wastes. It was processed by the application of several treatments, applied in series, i.e. microfiltration, ultrafiltration, reverse osmosis, selective electrodialysis and combined UV/ozonation. The initially applied membrane filtration methods (micro- and ultra-filtration) removed most of the suspended solids and macromolecules with a combined efficiency of more than 80%, while the reverse osmosis (at the end) removed almost all the remaining solutes (85-100%), producing sufficiently clarified water, appropriate for potential reuse. In the selective electrodialysis unit over 95% of ammonium and potassium were recovered from the feed, along with 55% of the phosphates. Of the latter, 75% was retrieved in the form of struvite.", "keywords": ["Struvite", "Ammonium Compounds", "Animals", "Anaerobiosis", "Nutrients", "Phosphates"]}, "links": [{"href": "https://doi.org/38280247"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "38280247", "name": "item", "description": "38280247", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/38280247"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-01-01T00:00:00Z"}}, {"id": "38554957", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-29T16:26:50Z", "type": "Journal Article", "created": "2024-03-29", "title": "Effect of manure co-digestion on methane production, carbon retention, and fertilizer value of digestate", "description": "Anaerobic digestion can provide benefits not only from the perspective of renewable energy production but also in the form of fertilization effect and increased retention of C in soils after digestate application. This study consisted of two phases, where the first phase assessed the suitability of carbon-rich co-feedstocks for methane production via laboratory testing. The second phase assessed the balance and stability of C before and after anaerobic digestion by systematic digestate characterization, and by evaluating its carbon retention potential using a modeling approach. The results indicated that pyrolysis chars had a negligible effect on the methane production potential of cattle manure, while wheat straw expectedly increased methane production. Thus, a mixture of cattle manure and wheat straw was digested in pilot-scale leach-bed reactors and compared with undigested manure and straw. Although the total amount of C in the digestate was lower than in the untreated feedstocks, the digestion process stabilized C and was modeled to be more effective in retaining C in the soil than untreated cattle manure and wheat straw. In addition, digestion converted 23-27\u00a0% of the C into valuable methane, increasing the valorization of the total C in the feedstock. Considering anaerobic digestion processes as a strategy to optimize both carbon and nutrient valorization provides a more holistic approach to addressing climate change and improving soil health.", "keywords": ["anaerobic digestion", "straw", "630", "333", "Carbon", "Manure", "Soil", "nutrients", "biogas", "Animals", "Cattle", "Anaerobiosis", "soil carbon", "Fertilizers", "Methane", "Triticum"]}, "links": [{"href": "https://doi.org/38554957"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "38554957", "name": "item", "description": "38554957", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/38554957"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Anaerobiosis&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Anaerobiosis&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Anaerobiosis&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Anaerobiosis&offset=29", "hreflang": "en-US"}], "numberMatched": 29, "numberReturned": 29, "distributedFeatures": [], "timeStamp": "2026-05-30T14:19:08.287626Z"}