@prefix adms: . @prefix cnt: . @prefix dcat: . @prefix dcatap: . @prefix dct: . @prefix eli: . @prefix foaf: . @prefix gsp: . @prefix locn: . @prefix skos: . @prefix vcard: . @prefix xsd: . a dcat:Dataset ; dcatap:applicableLegislation ; dcatap:hvdCategory ; dct:accessRights ; dct:conformsTo ; dct:creator [ a foaf:Agent ; dct:identifier "E05068001" ; dct:type ; foaf:mbox ; foaf:name "Schipper,L.A., Robertson, W.D., Gold,A.J., Jaynes, D.B. y Cameron, S.C."@en ] ; dct:description "Low-cost and simple technologies are needed to reduce watershed export of excess nitrogen to sensitive aquatic ecosystems. Denitrifying bioreactors are an approach where solid carbon substrates are added into the flow path of contaminated water. These carbon (C) substrates (often fragmented wood-products) act as a C and energy source to support denitrification; the conversion of nitrate (NO3−) to nitrogen gases. Here, we summarize the different designs of denitrifying bioreactors that use a solid C substrate, their hydrological connections, effectiveness, and factors that limit their performance. The main denitrifying bioreactors are: denitrification walls (intercepting shallow groundwater), denitrifying beds (intercepting concentrated discharges) and denitrifying layers (intercepting soil leachate). Both denitrifcation walls and beds have proven successful in appropriate field settings with NO3 − removal rates generally ranging from 0.01 to 3.6gNm−3 day−1 for walls and 2–22gNm−3 day−1 for beds, with the lower rates often associated with nitrate-limitations. Nitrate removal is also limited by the rate of C supply from degrading substrate and removal is operationally zero-order with respect to NO3 − concentration primarily because the inputs of NO3 − into studied bioreactors have been generally high. In bioreactors where NO3 − is not fully depleted, removal rates generally increase with increasing temperature. Nitrate removal has been supported for up to 15 years without further maintenance or C supplementation because wood chips degrade suffi ciently slowly under anoxic conditions. There have been few field-based comparisons of alternative C substrates to increase NO3− removal rates but laboratory trials suggest that some alternatives could sup port greater rates of NO3− removal (e.g., corn cobs and wheat straw). Denitrifying bioreactors may have a number of adverse effects, such as production of nitrous oxide and leaching of dissolved organic matter (usually only for the first few months after construction and start-up). The relatively small amount of field data suggests that these problems can be adequately managed or minimized. An initial cost/benefit analysis demonstrates that denitrifying bioreactors are cost effective and complementary to other agri cultural management practices aimed at decreasing nitrogen loads to surface waters. We conclude with recommendations for further research to enhance performance of denitrifying bioreactors"@en, "Low-cost and simple technologies are needed to reduce watershed export of excess nitrogen to sensitive aquatic ecosystems. Denitrifying bioreactors are an approach where solid carbon substrates are added into the flow path of contaminated water. These carbon (C) substrates (often fragmented wood-products) act as a C and energy source to support denitrification; the conversion of nitrate (NO3−) to nitrogen gases. Here, we summarize the different designs of denitrifying bioreactors that use a solid C substrate, their hydrological connections, effectiveness, and factors that limit their performance. The main denitrifying bioreactors are: denitrification walls (intercepting shallow groundwater), denitrifying beds (intercepting concentrated discharges) and denitrifying layers (intercepting soil leachate). Both denitrifcation walls and beds have proven successful in appropriate field settings with NO3 − removal rates generally ranging from 0.01 to 3.6gNm−3 day−1 for walls and 2–22gNm−3 day−1 for beds, with the lower rates often associated with nitrate-limitations. Nitrate removal is also limited by the rate of C supply from degrading substrate and removal is operationally zero-order with respect to NO3 − concentration primarily because the inputs of NO3 − into studied bioreactors have been generally high. In bioreactors where NO3 − is not fully depleted, removal rates generally increase with increasing temperature. Nitrate removal has been supported for up to 15 years without further maintenance or C supplementation because wood chips degrade suffi ciently slowly under anoxic conditions. There have been few field-based comparisons of alternative C substrates to increase NO3− removal rates but laboratory trials suggest that some alternatives could sup port greater rates of NO3− removal (e.g., corn cobs and wheat straw). Denitrifying bioreactors may have a number of adverse effects, such as production of nitrous oxide and leaching of dissolved organic matter (usually only for the first few months after construction and start-up). The relatively small amount of field data suggests that these problems can be adequately managed or minimized. An initial cost/benefit analysis demonstrates that denitrifying bioreactors are cost effective and complementary to other agri cultural management practices aimed at decreasing nitrogen loads to surface waters. We conclude with recommendations for further research to enhance performance of denitrifying bioreactors"@es ; dct:identifier "05a77695-ba6f-5c21-92a1-73e4125dd8e7" ; dct:issued "2024-11-05T00:00:00+00:00"^^xsd:dateTime ; dct:language ; dct:license ; dct:modified "2026-06-25T00:00:00+00:00"^^xsd:dateTime ; dct:publisher ; dct:spatial ; dct:title "Denitrifying bioreactors—An approach for reducing nitrate loads to receiving waters"@en, "Denitrifying bioreactors—An approach for reducing nitrate loads to receiving waters"@es ; dct:type ; adms:identifier [ a adms:Identifier ; skos:notation "DOI: 10.1016/j.ecoleng.2010.04.008" ] ; adms:status ; dcat:contactPoint ; dcat:distribution ; dcat:keyword "aguas_interiores"@en ; dcat:landingPage ; dcat:theme , . a dct:Location ; skos:prefLabel "España" ; dcat:bbox "POLYGON ((-18.1600 27.6400, 4.3200 27.6400, 4.3200 43.7900, -18.1600 43.7900, -18.1600 27.6400))"^^gsp:wktLiteral ; dcat:centroid "POINT (-6.9200 35.7150)"^^gsp:wktLiteral ; locn:geometry "POLYGON ((-18.1600 27.6400, 4.3200 27.6400, 4.3200 43.7900, -18.1600 43.7900, -18.1600 27.6400))"^^gsp:wktLiteral . a dct:LinguisticSystem . a dct:LinguisticSystem . a foaf:Agent ; dct:type ; vcard:hasEmail ; foaf:homepage ; foaf:name "Área de Banco de Datos de la Naturaleza. Dirección General Biodiversidad, Bosques y Desertificación. Ministerio para la Transición Ecológica y el Reto Demográfico"@en . a foaf:Document . a dcat:Distribution ; dcatap:applicableLegislation ; dcatap:availability ; dct:accessRights ; dct:format ; dct:issued "2010-05-14T00:00:00+00:00"^^xsd:dateTime ; dct:language ; dct:license ; dct:modified "2026-06-25T00:00:00+00:00"^^xsd:dateTime ; dct:title "Distribución HTML"@en, "Distribución HTML"@es ; cnt:characterEncoding "UTF-8" ; dcat:accessURL ; dcat:mediaType . a vcard:Kind ; vcard:fn "Organismo publicador del Catálogo"@en ; vcard:hasEmail ; vcard:hasURL ; vcard:role . a dct:Standard . a eli:LegalResource . dct:type .