Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland

A surface flow constructed wetland (CW) was set in the Lerma gully to decrease nitrate (NO3−) pollution from agricultural runoff water. The water flow rate and NO3− concentration were monitored at the inlet and the outlet, and sampling campaigns were performed which consisted of collecting six water...

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Detalles Bibliográficos
Autores: Margalef Marti, Rosanna, Carrey Labarta, Raúl, Merchán, D., Soler i Gil, Albert, Causapé, J., Otero Pérez, Neus
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/161622
Acceso en línea:https://hdl.handle.net/2445/161622
Access Level:acceso abierto
Palabra clave:Desnitrificació
Ecologia de les zones humides
Denitrification
Wetland ecology
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spelling Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetlandMargalef Marti, RosannaCarrey Labarta, RaúlMerchán, D.Soler i Gil, AlbertCausapé, J.Otero Pérez, NeusDesnitrificacióEcologia de les zones humidesDenitrificationWetland ecologyA surface flow constructed wetland (CW) was set in the Lerma gully to decrease nitrate (NO3−) pollution from agricultural runoff water. The water flow rate and NO3− concentration were monitored at the inlet and the outlet, and sampling campaigns were performed which consisted of collecting six water samples along the CW flow line. After two years of operation, the NO3− attenuation was limited at a flow rate of ~2.5 L/s and became negligible at ~5.5 L/s. The present work aimed to assess the feasibility of using rural waste products (wheat hay, corn stubble, and animal compost) to induce denitrification in the CW, to assess the effect of temperature on this process, and to trace the efficiency of the treatment by using isotopic tools. In the first stage, microcosm experiments were performed. Afterwards, the selected waste material was applied in the CW, and the treatment efficiency was evaluated by means of a chemical and isotopic characterization and using the isotopic fractionation (ε) values calculated from laboratory experiments to avoid field-scale interference. The microcosms results showed that the stubble was the most appropriate material for application in the CW, but the denitrification rate was found to decrease with temperature. In the CW, biostimulation in autumn-winter promoted NO3− attenuation between two weeks and one month (a reduction in NO3− between 1.2 and 1.5 mM was achieved). After the biostimulation in spring-summer, the attenuation was maintained for approximately three months (NO3− reduction between 0.1 and 1.5 mM). The ε15NNO3/N2 and ε18ONO3/N2 values obtained from the laboratory experiments allowed to estimate the induced denitrification percentage. At an approximate average flow rate of 16 L/s, at least 60% of NO3− attenuation was achieved in the CW. The field samples exhibited a slope of 1.0 for δ18O-NO3− versus δ15N-NO3−, similar to those of the laboratory experiments (0.9-1.2). Plant uptake seemed to play a minor role in NO3− attenuation in the CW. Hence, the application of stubble in the CW allowed the removal of large amounts of NO3− from the Lerma gully, especially when applied during the warm months, but its efficacy was limited to a short time period (up to three months).Elsevier B.V.2020202120192020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion53 p.application/pdfhttps://hdl.handle.net/2445/161622Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.jhydrol.2019.124035Journal of Hydrology, 2019, vol. 578, p. 124035https://doi.org/10.1016/j.jhydrol.2019.124035cc-by-nc-nd (c) Elsevier B.V., 2019http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1616222026-05-29T05:05:01Z
dc.title.none.fl_str_mv Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
title Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
spellingShingle Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
Margalef Marti, Rosanna
Desnitrificació
Ecologia de les zones humides
Denitrification
Wetland ecology
title_short Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
title_full Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
title_fullStr Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
title_full_unstemmed Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
title_sort Feasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
dc.creator.none.fl_str_mv Margalef Marti, Rosanna
Carrey Labarta, Raúl
Merchán, D.
Soler i Gil, Albert
Causapé, J.
Otero Pérez, Neus
author Margalef Marti, Rosanna
author_facet Margalef Marti, Rosanna
Carrey Labarta, Raúl
Merchán, D.
Soler i Gil, Albert
Causapé, J.
Otero Pérez, Neus
author_role author
author2 Carrey Labarta, Raúl
Merchán, D.
Soler i Gil, Albert
Causapé, J.
Otero Pérez, Neus
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Desnitrificació
Ecologia de les zones humides
Denitrification
Wetland ecology
topic Desnitrificació
Ecologia de les zones humides
Denitrification
Wetland ecology
description A surface flow constructed wetland (CW) was set in the Lerma gully to decrease nitrate (NO3−) pollution from agricultural runoff water. The water flow rate and NO3− concentration were monitored at the inlet and the outlet, and sampling campaigns were performed which consisted of collecting six water samples along the CW flow line. After two years of operation, the NO3− attenuation was limited at a flow rate of ~2.5 L/s and became negligible at ~5.5 L/s. The present work aimed to assess the feasibility of using rural waste products (wheat hay, corn stubble, and animal compost) to induce denitrification in the CW, to assess the effect of temperature on this process, and to trace the efficiency of the treatment by using isotopic tools. In the first stage, microcosm experiments were performed. Afterwards, the selected waste material was applied in the CW, and the treatment efficiency was evaluated by means of a chemical and isotopic characterization and using the isotopic fractionation (ε) values calculated from laboratory experiments to avoid field-scale interference. The microcosms results showed that the stubble was the most appropriate material for application in the CW, but the denitrification rate was found to decrease with temperature. In the CW, biostimulation in autumn-winter promoted NO3− attenuation between two weeks and one month (a reduction in NO3− between 1.2 and 1.5 mM was achieved). After the biostimulation in spring-summer, the attenuation was maintained for approximately three months (NO3− reduction between 0.1 and 1.5 mM). The ε15NNO3/N2 and ε18ONO3/N2 values obtained from the laboratory experiments allowed to estimate the induced denitrification percentage. At an approximate average flow rate of 16 L/s, at least 60% of NO3− attenuation was achieved in the CW. The field samples exhibited a slope of 1.0 for δ18O-NO3− versus δ15N-NO3−, similar to those of the laboratory experiments (0.9-1.2). Plant uptake seemed to play a minor role in NO3− attenuation in the CW. Hence, the application of stubble in the CW allowed the removal of large amounts of NO3− from the Lerma gully, especially when applied during the warm months, but its efficacy was limited to a short time period (up to three months).
publishDate 2019
dc.date.none.fl_str_mv 2019
2020
2020
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/161622
url https://hdl.handle.net/2445/161622
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.jhydrol.2019.124035
Journal of Hydrology, 2019, vol. 578, p. 124035
https://doi.org/10.1016/j.jhydrol.2019.124035
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier B.V., 2019
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier B.V., 2019
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 53 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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