{"type": "FeatureCollection", "features": [{"id": "10.1016/j.ijbiomac.2018.12.270", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:16:21Z", "type": "Journal Article", "created": "2019-01-03", "title": "Improving polyhydroxyalkanoates production in phototrophic mixed cultures by optimizing accumulator reactor operating conditions", "description": "Open AccessPolyhydroxyalkanoates (PHAs) production with phototrophic mixed cultures (PMCs) has been recently proposed. These cultures can be selected under the permanent presence of carbon and the PHA production can be enhanced in subsequent accumulation steps. To optimize the PHA production in accumulator reactors, this work evaluated the impact of 1) initial acetate concentration, 2) light intensity, 3) removal of residual nitrogen on the culture performance. Results indicate that low acetate concentration (&lt;30CmM) and specific light intensities around 20W/gX are optimal operating conditions that lead to high polyhydroxybutyrate (PHB) storage yields (0.83+-0.07 Cmol-PHB/Cmol-Acet) and specific PHB production rates of 2.21+-0.07 Cmol-PHB/Cmol X d. This rate is three times higher than previously registered in non-optimized accumulation tests and enabled a PHA content increase from 15 to 30% in less than 4h. Also, it was shown for the first time, the capability of a PMC to use a real waste, fermented cheese whey, to produce PHA with a hydroxyvalerate (HV) content of 12%. These results confirm that fermented wastes can be used as substrates for PHA production with PMCs and that the energy levels in sunlight that lead to specific light intensities from 10 to 20W/gX are sufficient to drive phototrophic PHA production processes.", "keywords": ["0106 biological sciences", "1303 Biochemistry", "Light", "Nitrogen", "Polyhydroxyalkanoates (PHA)", "Fermented cheese whey (FCW)", "Phototrophic mixed cultures (PMCs)", "Acetates", "7. Clean energy", "01 natural sciences", "1315 Structural Biology", "Bioreactors", "Cheese", "Whey", "1312 Molecular Biology", "0105 earth and related environmental sciences", "Polyhydroxyalkanoates", "Volatile fatty acids (VFAs)", "Other Quantitative Biology (q-bio.OT)", "Quantitative Biology - Other Quantitative Biology", "Purple phototrophic bacteria (PPB)", "Kinetics", "Phototrophic Processes", "13. Climate action", "FOS: Biological sciences", "Fermentation"]}, "links": [{"href": "https://doi.org/10.1016/j.ijbiomac.2018.12.270"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Biological%20Macromolecules", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ijbiomac.2018.12.270", "name": "item", "description": "10.1016/j.ijbiomac.2018.12.270", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ijbiomac.2018.12.270"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-04-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2018.04.095", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:35Z", "type": "Journal Article", "created": "2018-04-25", "title": "Performance of a biotrickling filter for the anaerobic utilization of gas-phase methanol coupled to thiosulphate reduction and resource recovery through volatile fatty acids production", "description": "The anaerobic removal of continuously fed gas-phase methanol (2.5-30\u202fg/m3.h) and the reduction of step-fed thiosulphate (1000\u202fmg/L) was investigated in a biotrickling filter (BTF) operated for 123\u202fd at an empty bed residence time (EBRT) of 4.6 and 2.3\u202fmin. The BTF performance during steady step-feed and special operational phases like intermittent liquid trickling in 6 and 24\u202fh cycles and operation without pH regulation were evaluated. Performance of the BTF was not affected and nearly 100% removal of gas-phase methanol was achieved with an ECmax of 21\u202fg/m3.h. Besides, >99% thiosulphate reduction was achieved, in all the phases of operation. The production of sulphate, H2S and volatile fatty acids (VFA) was monitored and a maximum of 2500\u202fmg/L of acetate, 200\u202fmg/L of propionate, 150\u202fmg/L of isovalerate and 100\u202fmg/L isobutyrate was produced.", "keywords": ["Biodegradation", " Environmental", "Bioreactors", "Methanol", "Thiosulfates", "0211 other engineering and technologies", "02 engineering and technology", "Fatty Acids", " Volatile", "01 natural sciences", "Filtration", "6. Clean water", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Eregowda, Tejaswini, Matanhike, Luck, Rene, Eldon R., Lens, Piet N.L.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2018.04.095"}, {"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.2018.04.095", "name": "item", "description": "10.1016/j.biortech.2018.04.095", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2018.04.095"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-09-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2018.06.099", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:35Z", "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.2018.09.044", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:35Z", "type": "Journal Article", "created": "2018-09-10", "title": "Biokinetics of microbial consortia using biogenic sulfur as a novel electron donor for sustainable denitrification", "description": "In this study, the biokinetics of autotrophic denitrification with biogenic S0 (ADBIOS) for the treatment of nitrogen pollution in wastewaters were investigated. The used biogenic S0, a by-product of gas desulfurization, was an elemental microcrystalline orthorhombic sulfur with a median size of 4.69\u202f\u00b5m and a specific surface area of 3.38\u202fm2/g, which made S0 particularly reactive and bioavailable. During denitritation, the biomass enriched on nitrite (NO2-) was capable of degrading up to 240\u202fmg/l NO2--N with a denitritation activity of 339.5\u202fmg NO2--N/g VSS\u00b7d. The use of biogenic S0 induced a low NO2--N accumulation, hindering the NO2--N negative impact on the denitrifying consortia and resulting in a specific denitrification activity of 223.0\u202fmg NO3--N/g VSS\u00b7d. Besides Thiobacillus being the most abundant genus, Moheibacter and Thermomonas were predominantly selected for denitrification and denitritation, respectively.", "keywords": ["Nitrite accumulation", "Nitrogen", "Microbial Consortia", "Biokinetics", "0211 other engineering and technologies", "Electrons", "02 engineering and technology", "Autotrophic denitrification", "Thiobacillus", "01 natural sciences", "6. Clean water", "Community structure", "12. Responsible consumption", "Kinetics", "Bioreactors", "13. Climate action", "Autotrophic denitrification; Biogenic sulfur; Nitrite accumulation; Biokinetics; Community structure", "Biogenic sulfur", "Denitrification", "Biomass", "Sulfur", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://eprints.gla.ac.uk/168662/1/168662.pdf"}, {"href": "https://www.iris.unina.it/bitstream/11588/722336/1/2018%20-%20Kostrytsia%20et%20al.%20-%20Bioresource%20Technology%20-%20Biokinetics%20of%20microbial%20consortia%20using%20biogenic%20S0.pdf"}, {"href": "https://doi.org/10.1016/j.biortech.2018.09.044"}, {"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.2018.09.044", "name": "item", "description": "10.1016/j.biortech.2018.09.044", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2018.09.044"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-12-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2018.10.002", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:35Z", "type": "Journal Article", "created": "2018-10-02", "title": "Enrichment of a solventogenic anaerobic sludge converting carbon monoxide and syngas into acids and alcohols", "description": "An anaerobic granular sludge was acclimatized to utilise CO in a continuously gas-fed stirred tank bioreactor by applying operating conditions expected to stimulate solventogenesis, i.e. the production of alcohols, and allowing to enrich for solventogenic populations. A cycle of high (6.2) and low (4.9) pH was applied in order to produce volatile fatty acids first at high pH, followed by their bioconversion into alcohols at low pH. The addition of yeast extract stimulated biomass growth, but not necessarily solventogenesis. The highest concentrations of metabolites achieved were 6.18\u202fg/L acetic acid (30th day), 1.18\u202fg/L butyric acid (28th day), and 0.423\u202fg/L hexanoic acid (32nd day). Subsequently, acids were metabolized at lower pH, producing alcohols at concentrations of 11.1\u202fg/L ethanol (43rd day), 1.8\u202fg/L butanol (41st day) and 1.46\u202fg/L hexanol (42nd day), confirming the successful enrichment strategy. Similarly, the enriched sludge could also convert syngas into acids and alcohols.", "keywords": ["0106 biological sciences", "Carbon Monoxide", "Ethanol", "Sewage", "01 natural sciences", "7. Clean energy", "6. Clean water", "Butyrates", "1-Butanol", "Bioreactors", "13. Climate action", "Biomass", "Gases", "Caproates", "Acetic Acid", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2018.10.002"}, {"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.2018.10.002", "name": "item", "description": "10.1016/j.biortech.2018.10.002", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.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": "2019-01-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2018.12.064", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:35Z", "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.2019.122033", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:35Z", "type": "Journal Article", "created": "2019-08-18", "title": "High rate continuous biohydrogen production by hyperthermophilic Thermotoga neapolitana", "description": "This study focused on continuous-flow hydrogen production by Thermotoga neapolitana at a hydraulic retention time (HRT) decreasing from 24 to 5\u202fh. At each HRT reduction, the hydrogen yield (HY) immediately dropped, but recovered during prolonged cultivation at constant HRT. The final HY in each operating period decreased from 3.4 (\u00b10.1) to 2.0 (\u00b10.0) mol H2/mol glucose when reducing the HRT from 24 to 7\u202fh. Simultaneously, the hydrogen production rate (HPR) and the liquid phase hydrogen concentration (H2aq) increased from 82 (\u00b11) to 192 (\u00b14) mL/L/h and from 9.1 (\u00b10.3) to 15.6 (\u00b10.7) mL/L, respectively. Additionally, the effluent glucose concentration increased from 2.1 (\u00b10.1) to above 10\u202fmM. Recirculating H2-rich biogas prevented the supersaturation of H2aq reaching a value of 9.3 (\u00b10.7) mL/L, resulting in complete glucose consumption and the highest HPR of 277\u202fmL/L/h at an HRT of 5\u202fh.", "keywords": ["0211 other engineering and technologies", "02 engineering and technology", "Acetic acid", "Archaea", "01 natural sciences", "7. Clean energy", "Continuous-flow dark fermentation", "Thermotoga neapolitana", "Acetic acid; Continuous-flow dark fermentation; Gas recirculation; Hydraulic retention time; Hydrogen; Thermotoga neapolitana", "Bioreactors", "Glucose", "Fermentation", "Gas recirculation", "Hydraulic retention time", "Hydrogen", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/758593/1/Post-print%20for%20IRIS.pdf"}, {"href": "https://doi.org/10.1016/j.biortech.2019.122033"}, {"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.2019.122033", "name": "item", "description": "10.1016/j.biortech.2019.122033", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2019.122033"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-12-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2019.02.158", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:41Z", "type": "Journal Article", "created": "2019-02-25", "title": "Bioreduction of selenate in an anaerobic biotrickling filter using methanol as electron donor", "description": "The anaerobic bioreduction of selenate, fed in step (up to 60\u202fmg.L-1) or continuous (\u223c7\u202fmg.L-1) trickling mode, in the presence of gas-phase methanol (4.3-50\u202fg\u202fm-3.h-1) was evaluated in a biotrickling filter (BTF). During the 48\u202fd of step-feed and 41\u202fd of continuous-feed operations, average selenate removal efficiencies (RE)\u202f>\u202f90% and \u223c68% was achieved, corresponding to a selenate reduction rate of, respectively, 7.3 and 4.5\u202fmg.L-1.d-1. During the entire period of BTF operation, 65.6% of the total Se fed as SeO42- was recovered. Concerning gas-phase methanol, the maximum elimination capacity (ECmax) was 46.4\u202fg\u202fm-3.h-1, with a RE\u202f>\u202f80%. Methanol was mainly utilized for acetogenesis and converted to volatile fatty acids (VFA) in the liquid-phase. Up to 5000\u202fmg.L-1 of methanol and 800\u202fmg.L-1 of acetate accumulated in the trickling liquid of the BTF.", "keywords": ["Bacteria", "Sewage", "Methanol", "0211 other engineering and technologies", "02 engineering and technology", "Selenic Acid", "Fatty Acids", " Volatile", "Archaea", "01 natural sciences", "6. Clean water", "Biodegradation", " Environmental", "Bioreactors", "Oxidation-Reduction", "Filtration", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2019.02.158"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2019.02.158", "name": "item", "description": "10.1016/j.chemosphere.2019.02.158", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2019.02.158"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2018.01.064", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:16:27Z", "type": "Journal Article", "created": "2018-02-05", "title": "Elemental sulfur-based autotrophic denitrification and denitritation: microbially catalyzed sulfur hydrolysis and nitrogen conversions", "description": "The hydrolysis of elemental sulfur (S0) coupled to S0-based denitrification and denitritation was investigated in batch bioassays by microbiological and modeling approaches. In the denitrification experiments, the highest obtained NO3--N removal rate was 20.9\u202fmg/l\u00b7d. In the experiments with the biomass enriched on NO2-, a NO2--N removal rate of 10.7\u202fmg/l\u00b7d was achieved even at a NO2--N concentration as high as 240\u202fmg/l. The Helicobacteraceae family was only observed in the biofilm attached onto the chemically-synthesized S0 particles with a relative abundance up to 37.1%, suggesting it was the hydrolytic biomass capable of S0 solubilization in the novel surface-based model. S0-driven denitrification was modeled as a two-step process in order to explicitly account for the sequential reduction of NO3- to NO2- and then to N2 by denitrifying bacteria.", "keywords": ["Surface-based hydrolysis", "Autotrophic Processes", "Autotrophic denitrification; Autotrophic denitritation; Community structure; Elemental sulfur; Mathematical modeling; Surface-based hydrolysis", "Elemental sulfur", "Nitrates", "Nitrogen", "Hydrolysis", "0211 other engineering and technologies", "02 engineering and technology", "Autotrophic denitrification", "01 natural sciences", "6. Clean water", "Community structure", "Bioreactors", "Autotrophic denitritation", "Denitrification", "Autotrophic denitrification; Autotrophic denitritation; Elemental sulfur; Community structure; Surface-based hydrolysis; Mathematical modeling", "Mathematical modeling", "14. Life underwater", "Sulfur", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/698214/5/anastasiia%20JEMA.pdf"}, {"href": "https://doi.org/10.1016/j.jenvman.2018.01.064"}, {"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.2018.01.064", "name": "item", "description": "10.1016/j.jenvman.2018.01.064", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jenvman.2018.01.064"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-04-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2018.10.002", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:16:27Z", "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": "2026-05-25T16:16:27Z", "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.jhazmat.2018.12.062", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:16:29Z", "type": "Journal Article", "created": "2018-12-18", "title": "H2S removal and microbial community composition in an anoxic biotrickling filter under autotrophic and mixotrophic conditions", "description": "Removal of H2S from gas streams using NO3--containing synthetic wastewater was investigated in an anoxic biotrickling filter (BTF) at feed N/S ratios of 1.2-1.7\u2009mol mol-1 with an empty bed residence time of 3.5\u2009min and a hydraulic retention time of 115\u2009min. During 108 days of operation under autotrophic conditions, the BTF showed a maximum elimination capacity (EC) of 19.2\u2009g S m-3\u2009h-1 and H2S removal efficiency (RE) >99%. When the BTF was operated under mixotrophic conditions by adding organic carbon (10.2\u2009g acetate m-3\u2009h-1) to the synthetic wastewater, the H2S EC decreased from 16.4 to 13.1\u2009g S m-3\u2009h-1, while the NO3- EC increased from 9.9 to 11.1\u2009g NO3--N m-3\u2009h-1, respectively. Thiobacillus sp. (98-100% similarity) was the only sulfur-oxidizing nitrate-reducing bacterium detected in the BTF biofilm, while the increased abundance of heterotrophic denitrifiers, i.e. Brevundimonas sp. and Rhodocyclales, increased the N/S ratio during BTF operation. Residence time distribution tests showed that biomass accumulation during BTF operation reduced gas and liquid retention times by 17.1% and 83.5%, respectively.", "keywords": ["570", "Air Pollutants", "Nitrates", "550", "Bacteria", "Microbiota", "116 Chemical sciences", "116", "Waste Disposal", " Fluid", "01 natural sciences", "6. Clean water", "Bioreactors", "Denitrification", "Hydrogen Sulfide", "Filtration", "Water Pollutants", " Chemical", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.jhazmat.2018.12.062"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Hazardous%20Materials", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jhazmat.2018.12.062", "name": "item", "description": "10.1016/j.jhazmat.2018.12.062", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jhazmat.2018.12.062"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-04-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2017.02.063", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:17:12Z", "type": "Journal Article", "created": "2017-02-28", "title": "Biohydrogen production from xylose by fresh and digested activated sludge at 37, 55 and 70\u00a0\u00b0C", "description": "Two heat-treated inocula, fresh and digested activated sludge from the same municipal wastewater treatment plant, were compared for their H2 production via dark fermentation at mesophilic (37\u00a0\u00b0C), thermophilic (55\u00a0\u00b0C) and hyperthermophilic (70\u00a0\u00b0C) conditions using xylose as the substrate. At both 37 and 55\u00a0\u00b0C, the fresh activated sludge yielded more H2 than the digested sludge, whereas at 70\u00a0\u00b0C, neither of the inocula produced H2 effectively. A maximum yield of 1.85\u00a0mol H2 per mol of xylose consumed was obtained at 55\u00a0\u00b0C. H2 production was linked to acetate and butyrate production, and there was a linear correlation (R2\u00a0=\u00a00.96) between the butyrate and H2 yield for the fresh activated sludge inoculum at 55\u00a0\u00b0C. Approximately 2.4\u00a0mol H2 per mol of butyrate produced were obtained against a theoretical maximum of 2.0, suggesting that H2 was produced via the acetate pathway prior to switching to the butyrate pathway due to the increased H2 partial pressure. Clostridia sp. were the prevalent species at both 37 and 55\u00a0\u00b0C, irrespectively of the inoculum type. Although the two inocula originated from the same plant, different thermophilic microorganisms were detected at 55\u00a0\u00b0C. Thermoanaerobacter sp., detected only in the fresh activated sludge cultures, may have contributed to the high H2 yield obtained with such an inoculum.", "keywords": ["Xylose", "Sewage", "116 Chemical sciences", "116", "02 engineering and technology", "01 natural sciences", "6. Clean water", "12. Responsible consumption", "Bioreactors", "13. Climate action", "Fermentation", "11. Sustainability", "0204 chemical engineering", "Hydrogen", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.watres.2017.02.063"}, {"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.2017.02.063", "name": "item", "description": "10.1016/j.watres.2017.02.063", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2017.02.063"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-05-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2018.06.016", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:17:13Z", "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.2018.06.030", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:17:13Z", "type": "Journal Article", "created": "2018-06-15", "title": "Evaluation of a novel quorum quenching strain for MBR biofouling mitigation", "description": "Membrane biofouling, due to Soluble Microbial Products (SMP) and Extracellular Polymeric Substances (EPS) deposition, results in reduction of the performance of Membrane Bioreactors (MBRs). However, recently, a new method of biofouling control has been developed, utilizing the interference of the bacterial inter- and intra-species' communication. Bacteria use Quorum Sensing (QS) to regulate the production of SMP and EPS. Therefore, disruption of Quorum Sensing (Quorum Quenching: QQ), by enzymes or microorganisms, may be a simple mean to control membrane biofouling. In the present study, a novel QQ-bacterium, namely Lactobacillus sp. SBR04MA, was isolated from municipal wastewater sludge and its ability to mitigate biofouling was evaluated by monitoring the changes in critical flux and transmembrane pressure, along with the production of EPS and SMP, in a lab-scale MBR system treating synthetic wastewater. Lactobacillus sp. SBR04MA showed great potential for biofouling control, which was evidenced by the \u223c3-fold increase in critical flux (8.3\u202f\u2192\u202f24.25\u202fL/m2/h), as well as by reduction of the SMP and EPS production, which was lower during the QQ-period when compared against the control period. Furthermore, the addition of the QQ-strain did not affect the COD removal rate. Results suggested that Lactobacillus sp. SBR04MA represents a novel and promising strain for biofouling mitigation and enhancement of MBRs performance.", "keywords": ["0301 basic medicine", "Bacteria", "Sewage", "Biofouling", "Quorum Sensing", "Membranes", " Artificial", "Wastewater", "Waste Disposal", " Fluid", "01 natural sciences", "6. Clean water", "12. Responsible consumption", "Lactobacillus", "03 medical and health sciences", "Bioreactors", "Pressure", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.watres.2018.06.030"}, {"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.2018.06.030", "name": "item", "description": "10.1016/j.watres.2018.06.030", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2018.06.030"}, {"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": "2026-05-25T16:17:13Z", "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": "10.1080/09593330.2013.824012", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:18:10Z", "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": "10.2166/wst.2018.398", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:20:24Z", "type": "Journal Article", "created": "2018-10-04", "title": "Sensitivity analysis for an elemental sulfur-based two-step denitrification model", "description": "Abstract                <p>A local sensitivity analysis was performed for a chemically synthesized elemental sulfur (S0)-based two-step denitrification model, accounting for nitrite (NO2\uffe2\uff88\uff92) accumulation, biomass growth and S0 hydrolysis. The sensitivity analysis was aimed at verifying the model stability, understanding the model structure and individuating the model parameters to be further optimized. The mass specific area of the sulfur particles (a*) and hydrolysis kinetic constant (k1) were identified as the dominant parameters on the model outputs, i.e. nitrate (NO3\uffe2\uff88\uff92), NO2\uffe2\uff88\uff92 and sulfate (SO42\uffe2\uff88\uff92) concentrations, confirming that the microbially catalyzed S0 hydrolysis is the rate-limiting step during S0-driven denitrification. Additionally, the maximum growth rates of the denitrifying biomass on NO3\uffe2\uff88\uff92 and NO2\uffe2\uff88\uff92 were detected as the most sensitive kinetic parameters.</p>", "keywords": ["Elemental sulfur", "Environmental Engineering", "0207 environmental engineering", "Biological surface-based hydrolysis; Elemental sulfur; Mathematical modeling; Sensitivity analysis; Two-step autotrophic denitrification; Environmental Engineering; Water Science and Technology", "02 engineering and technology", "01 natural sciences", "Two-step autotrophic denitrification", "Bioreactors", "European Joint Doctorates", "European Commission", "Knowmad Institut", "Biological surface-based hydrolysis", "Nitrites", "Netherlands", "Water Science and Technology", "0105 earth and related environmental sciences", "Aurora Universities Network", "EC", "Nitrates", "H2020", "Energy Research", "13. Climate action", "Denitrification", "Mathematical modeling", "Sensitivity analysis", "Sulfur"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/724909/2/2018%20-%20Kostrytsia%20et%20al.%20-%20Water%20Science%20%26%20Technology%20-%20Sensitivity%20analysis%20for%20S0-based%20denitrification%20model.pdf"}, {"href": "http://iwaponline.com/wst/article-pdf/78/6/1296/504647/wst078061296.pdf"}, {"href": "https://doi.org/10.2166/wst.2018.398"}, {"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.2018.398", "name": "item", "description": "10.2166/wst.2018.398", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2166/wst.2018.398"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-09-20T00:00:00Z"}}, {"id": "10.3390/molecules25122723", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:20:58Z", "type": "Journal Article", "created": "2020-06-16", "title": "Ammonium Recovery and Biogas Upgrading in a Tubular Micro-Pilot Microbial Electrolysis Cell (MEC)", "description": "<p>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.</p>", "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. Climate action", "digestate", "Biofuels", "nitrogen recovery", "bioelectromethanogenesis"]}, "links": [{"href": "http://www.mdpi.com/1420-3049/25/12/2723/pdf"}, {"href": "https://iris.uniroma1.it/bitstream/11573/1415412/1/Cristiani_Ammonium_2020.pdf"}, {"href": "https://www.mdpi.com/1420-3049/25/12/2723/pdf"}, {"href": "https://doi.org/10.3390/molecules25122723"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Molecules", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/molecules25122723", "name": "item", "description": "10.3390/molecules25122723", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/molecules25122723"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-12T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Bioreactors&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=Bioreactors&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=Bioreactors&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Bioreactors&offset=19", "hreflang": "en-US"}], "numberMatched": 19, "numberReturned": 19, "distributedFeatures": [], "timeStamp": "2026-05-26T09:12:27.863403Z"}