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.2010.08.051", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:16Z", "type": "Journal Article", "created": "2010-08-25", "title": "An Analysis Of Net Energy Production And Feedstock Availability For Biobutanol And Bioethanol", "description": "In this study, the potential of biobutanol was evaluated as an alternative to bioethanol which is currently the predominant liquid biofuel in the US. Life-cycle assessments (LCAs) suggest that the net energy generated during corn-to-biobutanol conversion is 6.53 MJ/L, which is greater than that of the corn-derived bioethanol (0.40 MJ/L). Additionally, replacing corn with lignocellulosic materials in bioethanol production can further increase the net energy to 15.90 MJ/L. Therefore, it was interesting to study the possibility of using domestically produced switchgrass, hybrid poplar, corn stover, and wheat straw as feedstocks to produce liquid biofuels in the US. By sustainable harvest based on current yields, these materials can be converted to 8.27 billion gallons of biobutanol replacing 7.55 billion gallons of gasoline annually. To further expand the scale, significant crop yield increases and appropriate land use changes are considered two major requirements.", "keywords": ["2. Zero hunger", "Ethanol", "Butanols", "0211 other engineering and technologies", "02 engineering and technology", "15. Life on land", "Lignin", "7. Clean energy", "Biofuels", "Fermentation", "0202 electrical engineering", " electronic engineering", " information engineering", "Feasibility Studies", "Thermodynamics", "Biomass"], "contacts": [{"organization": "Mohsen Behnam, Robert W. Thompson, Jeffrey Swana, Ying Yang,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2010.08.051"}, {"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.2010.08.051", "name": "item", "description": "10.1016/j.biortech.2010.08.051", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2010.08.051"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-01-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2008.05.029", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:28Z", "type": "Journal Article", "created": "2008-07-22", "title": "Feasibility Of Phytoextraction To Remediate Cadmium And Zinc Contaminated Soils", "description": "A Cd and Zn contaminated soil was mixed and equilibrated with an uncontaminated, but otherwise similar soil to establish a gradient in soil contamination levels. Growth of Thlaspi caerulescens (Ganges ecotype) significantly decreased the metal concentrations in soil solution. Plant uptake of Cd and Zn exceeded the decrease of the soluble metal concentrations by several orders of magnitude. Hence, desorption of metals must have occurred to maintain the soil solution concentrations. A coupled regression model was developed to describe the transfer of metals from soil to solution and plant shoots. This model was applied to estimate the phytoextraction duration required to decrease the soil Cd concentration from 10 to 0.5 mg kg(-1). A biomass production of 1 and 5 t dm ha(-1) yr(-1) yields a duration of 42 and 11 yr, respectively. Successful phytoextraction operations based on T. caerulescens require an increased biomass production.", "keywords": ["Time Factors", "Industrial Waste", "phytoremediation", "01 natural sciences", "metal-accumulating plants", "Soil", "hyperaccumulator thlaspi-caerulescens", "heavy-metals", "sandy soil", "Life Science", "Soil Pollutants", "Biomass", "0105 earth and related environmental sciences", "polluted soils", "04 agricultural and veterinary sciences", "field", "6. Clean water", "cd", "Thlaspi", "Zinc", "Biodegradation", " Environmental", "zn", "Feasibility Studies", "0401 agriculture", " forestry", " and fisheries", "rhizosphere", "Plant Shoots", "Cadmium"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2008.05.029"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2008.05.029", "name": "item", "description": "10.1016/j.envpol.2008.05.029", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2008.05.029"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-12-01T00:00:00Z"}}, {"id": "10.1016/j.tree.2018.01.007", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:16:26Z", "type": "Journal Article", "created": "2018-02-19", "title": "Towards the Integration of Niche and Network Theories", "description": "The quest for understanding how species interactions modulate diversity has progressed by theoretical and empirical advances following niche and network theories. Yet, niche studies have been limited to describe coexistence within tropic levels despite incorporating information about multi-trophic interactions. Network approaches could address this limitation, but they have ignored the structure of species interactions within trophic levels. Here we call for the integration of niche and network theories to reach new frontiers of knowledge exploring how interactions within and across trophic levels promote species coexistence. This integration is possible due to the strong parallelisms in the historical development, ecological concepts, and associated mathematical tools of both theories. We provide a guideline to integrate this framework with observational and experimental studies.", "keywords": ["0106 biological sciences", "0301 basic medicine", "03 medical and health sciences", "Feasibility", "Multi-trophic networks", "Species interactions", "Biodiversity", "15. Life on land", "Stability", "Models", " Biological", "01 natural sciences", "Coexistence", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1016/j.tree.2018.01.007"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Trends%20in%20Ecology%20%26amp%3B%20Evolution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.tree.2018.01.007", "name": "item", "description": "10.1016/j.tree.2018.01.007", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.tree.2018.01.007"}, {"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": "10.1111/1758-2229.13187", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:17:25Z", "type": "Journal Article", "created": "2023-07-22", "title": "Coupling the electrocatalytic dechlorination of 2,4\u2010D with electroactive microbial anodes", "description": "AbstractThis work proves the feasibility of dechlorinating 2,4\uffe2\uff80\uff90D, a customary commercial herbicide, using cathodic electrocatalysis driven by the anodic microbial electrooxidation of sodium acetate. A set of microbial electrochemical systems (MES) were run under two different operating modes, namely microbial fuel cell (MFC) mode, with an external resistance of 120\uffe2\uff80\uff89\uffce\uffa9, or microbial electrolysis cell (MEC) mode, by supplying external voltage (0.6\uffe2\uff80\uff89V) for promoting the (bio)electrochemical reactions taking place. When operating the MES as an MFC, 32% dechlorination was obtained after 72\uffe2\uff80\uff89h of treatment, which was further enhanced by working under MEC mode and achieving a 79% dechlorination. In addition, the biodegradability (expressed as the ratio BOD/COD) of the synthetic polluted wastewater was tested prior and after the MES treatment, which was improved from negative values (corresponding to toxic effluents) up to 0.135 in the MFC and 0.453 in the MEC. Our MES approach proves to be a favourable option from the point of view of energy consumption. Running the system under MFC mode allowed to co\uffe2\uff80\uff90generate energy along the dechlorination process (\uffe2\uff88\uff920.0120\uffe2\uff80\uff89kWh\uffe2\uff80\uff89mol\uffe2\uff88\uff921), even though low removal rates were attained. The energy input under MEC operation was 1.03\uffe2\uff80\uff89kWh\uffe2\uff80\uff89mol\uffe2\uff88\uff921\uffe2\uff80\uff94a competitive value compared to previous works reported in the literature for (non\uffe2\uff80\uff90biological) electrochemical reactors for 2,4\uffe2\uff80\uff90D electrodechlorination.Increasing soil organic carbon (SOC) stocks is a promising way to mitigate the increase in atmospheric CO2 concentration. Based on a simple ratio between CO2 anthropogenic emissions and SOC stocks worldwide, it has been suggested that a 0.4% (4 per 1000) yearly increase in SOC stocks could compensate for current anthropogenic CO2 emissions. Here, we used a reverse RothC modelling approach to estimate the amount of C inputs to soils required to sustain current SOC stocks and to increase them by 4\uffe2\uff80\uffb0 per year over a period of 30\uffc2\uffa0years. We assessed the feasibility of this aspirational target first by comparing the required C input with net primary productivity (NPP) flowing to the soil, and second by considering the SOC saturation concept. Calculations were performed for mainland France, at a 1\uffc2\uffa0km grid cell resolution. Results showed that a 30%\uffe2\uff80\uff9340% increase in C inputs to soil would be needed to obtain a 4\uffe2\uff80\uffb0 increase per year over a 30\uffe2\uff80\uff90year period. 88.4% of cropland areas were considered unsaturated in terms of mineral\uffe2\uff80\uff90associated SOC, but characterized by a below target C balance, that is, less NPP available than required to reach the 4\uffe2\uff80\uffb0 aspirational target. Conversely, 90.4% of unimproved grasslands were characterized by an above target C balance, that is, enough NPP to reach the 4\uffe2\uff80\uffb0 objective, but 59.1% were also saturated. The situation of improved grasslands and forests was more evenly distributed among the four categories (saturated vs. unsaturated and above vs below target C balance). Future data from soil monitoring networks should enable to validate these results. Overall, our results suggest that, for mainland France, priorities should be (1) to increase NPP returns in cropland soils that are unsaturated and have a below target carbon balance and (2) to preserve SOC stocks in other land uses.
", "keywords": ["[SDV.SA]Life Sciences [q-bio]/Agricultural sciences", "Carbon Sequestration", "550", "[SDE.MCG]Environmental Sciences/Global Changes", "RothC", "01 natural sciences", "630", "climate change mitigation", "Soil", "4 per 1000", "net primary productivity", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", " environment", "0105 earth and related environmental sciences", "[SDU.OCEAN]Sciences of the Universe [physics]/Ocean", " Atmosphere", "2. Zero hunger", "[SDU.OCEAN]Sciences of the Universe [physics]/Ocean", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "Atmosphere", "[SDU.OCEAN] Sciences of the Universe [physics]/Ocean", " Atmosphere", "04 agricultural and veterinary sciences", "15. Life on land", "Primary Research Articles", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "Carbon", "soil organic carbon", "[SDE.MCG] Environmental Sciences/Global Changes", "13. Climate action", "SOC saturation", "Feasibility Studies", "0401 agriculture", " forestry", " and fisheries", "France", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "environment"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15547"}, {"href": "https://doi.org/10.1111/gcb.15547"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.15547", "name": "item", "description": "10.1111/gcb.15547", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.15547"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-08T00:00:00Z"}}, {"id": "10.1371/journal.pone.0111965", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:05Z", "type": "Journal Article", "created": "2015-06-08", "title": "The Effect Of Chemical Amendments Used For Phosphorus Abatement On Greenhouse Gas And Ammonia Emissions From Dairy Cattle Slurry: Synergies And Pollution", "description": "Land application of cattle slurry can result in incidental and chronic phosphorus (P) loss to waterbodies, leading to eutrophication. Chemical amendment of slurry has been proposed as a management practice, allowing slurry nutrients to remain available to plants whilst mitigating P losses in runoff. The effectiveness of amendments is well understood but their impacts on other loss pathways (so-called 'pollution swapping' potential) and therefore the feasibility of using such amendments has not been examined to date. The aim of this laboratory scale study was to determine how the chemical amendment of slurry affects losses of NH3, CH4, N2O, and CO2. Alum, FeCl2, Polyaluminium chloride (PAC)-and biochar reduced NH3 emissions by 92, 54, 65 and 77% compared to the slurry control, while lime increased emissions by 114%. Cumulative N2O emissions of cattle slurry increased when amended with alum and FeCl2 by 202% and 154% compared to the slurry only treatment. Lime, PAC and biochar resulted in a reduction of 44, 29 and 63% in cumulative N2O loss compared to the slurry only treatment. Addition of amendments to slurry did not significantly affect soil CO2 release during the study while CH4 emissions followed a similar trend for all of the amended slurries applied, with an initial increase in losses followed by a rapid decrease for the duration of the study. All of the amendments examined reduced the initial peak in CH4 emissions compared to the slurry only treatment. There was no significant effect of slurry amendments on global warming potential (GWP) caused by slurry land application, with the exception of biochar. After considering pollution swapping in conjunction with amendment effectiveness, the amendments recommended for further field study are PAC, alum and lime. This study has also shown that biochar has potential to reduce GHG losses arising from slurry application.", "keywords": ["Greenhouse Effect", "Time Factors", "Science", "methane emissions", "Nitrous Oxide", "n2o emissions", "Environment", "Global Warming", "soil", "12. Responsible consumption", "Ammonia", "Air Pollution", "Animals", "volatilization", "2. Zero hunger", "Air Pollutants", "Sewage", "Q", "Pollution swapping", "R", "Phosphorus", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Greenhouse Gas", "field", "6. Clean water", "livestock slurry", "Dairying", "Slurries", "13. Climate action", "manure", "nitrous-oxide emission", "Medicine", "Feasibility Studies", "0401 agriculture", " forestry", " and fisheries", "Cattle", "grassland", "Methane", "charcoal", "Research Article"]}, "links": [{"href": "https://doi.org/10.1371/journal.pone.0111965"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/PLOS%20ONE", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1371/journal.pone.0111965", "name": "item", "description": "10.1371/journal.pone.0111965", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1371/journal.pone.0111965"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-06-08T00:00:00Z"}}, {"id": "3128171785", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:22:47Z", "type": "Journal Article", "created": "2021-02-06", "title": "Feasibility of the 4 per 1000 aspirational target for soil carbon: A case study for France", "description": "AbstractIncreasing soil organic carbon (SOC) stocks is a promising way to mitigate the increase in atmospheric CO2 concentration. Based on a simple ratio between CO2 anthropogenic emissions and SOC stocks worldwide, it has been suggested that a 0.4% (4 per 1000) yearly increase in SOC stocks could compensate for current anthropogenic CO2 emissions. Here, we used a reverse RothC modelling approach to estimate the amount of C inputs to soils required to sustain current SOC stocks and to increase them by 4\uffe2\uff80\uffb0 per year over a period of 30\uffc2\uffa0years. We assessed the feasibility of this aspirational target first by comparing the required C input with net primary productivity (NPP) flowing to the soil, and second by considering the SOC saturation concept. Calculations were performed for mainland France, at a 1\uffc2\uffa0km grid cell resolution. Results showed that a 30%\uffe2\uff80\uff9340% increase in C inputs to soil would be needed to obtain a 4\uffe2\uff80\uffb0 increase per year over a 30\uffe2\uff80\uff90year period. 88.4% of cropland areas were considered unsaturated in terms of mineral\uffe2\uff80\uff90associated SOC, but characterized by a below target C balance, that is, less NPP available than required to reach the 4\uffe2\uff80\uffb0 aspirational target. Conversely, 90.4% of unimproved grasslands were characterized by an above target C balance, that is, enough NPP to reach the 4\uffe2\uff80\uffb0 objective, but 59.1% were also saturated. The situation of improved grasslands and forests was more evenly distributed among the four categories (saturated vs. unsaturated and above vs below target C balance). Future data from soil monitoring networks should enable to validate these results. Overall, our results suggest that, for mainland France, priorities should be (1) to increase NPP returns in cropland soils that are unsaturated and have a below target carbon balance and (2) to preserve SOC stocks in other land uses. This work proves the feasibility of dechlorinating 2,4\uffe2\uff80\uff90D, a customary commercial herbicide, using cathodic electrocatalysis driven by the anodic microbial electrooxidation of sodium acetate. A set of microbial electrochemical systems (MES) were run under two different operating modes, namely microbial fuel cell (MFC) mode, with an external resistance of 120\uffe2\uff80\uff89\uffce\uffa9, or microbial electrolysis cell (MEC) mode, by supplying external voltage (0.6\uffe2\uff80\uff89V) for promoting the (bio)electrochemical reactions taking place. When operating the MES as an MFC, 32% dechlorination was obtained after 72\uffe2\uff80\uff89h of treatment, which was further enhanced by working under MEC mode and achieving a 79% dechlorination. In addition, the biodegradability (expressed as the ratio BOD/COD ) of the synthetic polluted wastewater was tested prior and after the MES treatment, which was improved from negative values (corresponding to toxic effluents) up to 0.135 in the MFC and 0.453 in the MEC. Our MES approach proves to be a favourable option from the point of view of energy consumption. Running the system under MFC mode allowed to co\uffe2\uff80\uff90generate energy along the dechlorination process (\uffe2\uff88\uff920.0120\uffe2\uff80\uff89kWh\uffe2\uff80\uff89mol \uffe2\uff88\uff921 ), even though low removal rates were attained. The energy input under MEC operation was 1.03\uffe2\uff80\uff89kWh\uffe2\uff80\uff89mol \uffe2\uff88\uff921 \uffe2\uff80\uff94a competitive value compared to previous works reported in the literature for (non\uffe2\uff80\uff90biological) electrochemical reactors for 2,4\uffe2\uff80\uff90D electrodechlorination. Increasing soil organic carbon (SOC) stocks is a promising way to mitigate the increase in atmospheric CO2 concentration. Based on a simple ratio between CO2 anthropogenic emissions and SOC stocks worldwide, it has been suggested that a 0.4% (4 per 1000) yearly increase in SOC stocks could compensate for current anthropogenic CO2 emissions. Here, we used a reverse RothC modelling approach to estimate the amount of C inputs to soils required to sustain current SOC stocks and to increase them by 4\uffe2\uff80\uffb0 per year over a period of 30\uffc2\uffa0years. We assessed the feasibility of this aspirational target first by comparing the required C input with net primary productivity (NPP) flowing to the soil, and second by considering the SOC saturation concept. Calculations were performed for mainland France, at a 1\uffc2\uffa0km grid cell resolution. Results showed that a 30%\uffe2\uff80\uff9340% increase in C inputs to soil would be needed to obtain a 4\uffe2\uff80\uffb0 increase per year over a 30\uffe2\uff80\uff90year period. 88.4% of cropland areas were considered unsaturated in terms of mineral\uffe2\uff80\uff90associated SOC, but characterized by a below target C balance, that is, less NPP available than required to reach the 4\uffe2\uff80\uffb0 aspirational target. Conversely, 90.4% of unimproved grasslands were characterized by an above target C balance, that is, enough NPP to reach the 4\uffe2\uff80\uffb0 objective, but 59.1% were also saturated. The situation of improved grasslands and forests was more evenly distributed among the four categories (saturated vs. unsaturated and above vs below target C balance). Future data from soil monitoring networks should enable to validate these results. Overall, our results suggest that, for mainland France, priorities should be (1) to increase NPP returns in cropland soils that are unsaturated and have a below target carbon balance and (2) to preserve SOC stocks in other land uses.