Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.6/1953 |
Resumo: | This study investigated the effects of reed and willow on bioremediation of landfill leachate in comparison with an unplanted control by measuring redox potential levels in the rhizosphere of microcosm systems in a greenhouse. Plants had a significant influence on redox potential relative to the plant-less system. Redox potential in the reed rhizosphere was anoxic (mean -102 +/- 85 mV), but it was the least negative, being significantly higher than in the willow (mean -286 +/- 118 mV), which had the lowest Eh. Redox potential fluctuated significantly in the willow rhizosphere during daylight hours, with large decreases in the morning. Levels of NH4+ decreased significantly in the first day of the experiment and remained at similar low levels in all three variants for the next four weeks of the experiment. Following this removal of ammonia significant peaks in NO2- occurred in the control and reed tanks on the 1st day, and again on 14th day in the control tank up to 13 mg/dm(3). In the willow tank there was also one significant peak of NO2- in the first week, but only up to 0.5 mg/dm(3). Significant accumulation, within 21 days of NO3- in all variants was observed, but in tanks with reed and willow the concentration of NO3- remained significantly lower (<4 mg/dm(3)) than in the unplanted tank (similar to 35 mg/dm(3)). Final levels of total-nitrogen, nitrate and chemical oxygen demand were considerably lower in the reed and willow tank than in the unplanted tank. |
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spelling |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zoneLandfill leachateWetlandsMacrófitasSubsurface flowRemoção de azotoNutrient removalRedox potentialNitrogen removalThis study investigated the effects of reed and willow on bioremediation of landfill leachate in comparison with an unplanted control by measuring redox potential levels in the rhizosphere of microcosm systems in a greenhouse. Plants had a significant influence on redox potential relative to the plant-less system. Redox potential in the reed rhizosphere was anoxic (mean -102 +/- 85 mV), but it was the least negative, being significantly higher than in the willow (mean -286 +/- 118 mV), which had the lowest Eh. Redox potential fluctuated significantly in the willow rhizosphere during daylight hours, with large decreases in the morning. Levels of NH4+ decreased significantly in the first day of the experiment and remained at similar low levels in all three variants for the next four weeks of the experiment. Following this removal of ammonia significant peaks in NO2- occurred in the control and reed tanks on the 1st day, and again on 14th day in the control tank up to 13 mg/dm(3). In the willow tank there was also one significant peak of NO2- in the first week, but only up to 0.5 mg/dm(3). Significant accumulation, within 21 days of NO3- in all variants was observed, but in tanks with reed and willow the concentration of NO3- remained significantly lower (<4 mg/dm(3)) than in the unplanted tank (similar to 35 mg/dm(3)). Final levels of total-nitrogen, nitrate and chemical oxygen demand were considerably lower in the reed and willow tank than in the unplanted tank.This experimental work was done with financial support of the fellowship of Dr Andrzej Bia1owiec held at Cardiff University, School of Biosciences, granted by Polish Ministry of Science and Higher Education No. 219/MOB/2008/0. Data analysis was carried out with financial support of EVAWET project e PTDC/AMB/73081/2006.ElsevieruBibliorumBialowiec, AndrzejAlbuquerque, AntonioDavies, LauraRanderson, Peter2014-06-30T16:09:12Z2012-042012-04-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/1953eng1095-863010.1016/j.jenvman.2011.11.014info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:37:44Zoai:ubibliorum.ubi.pt:10400.6/1953Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:43:41.871217Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone |
title |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone |
spellingShingle |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone Bialowiec, Andrzej Landfill leachate Wetlands Macrófitas Subsurface flow Remoção de azoto Nutrient removal Redox potential Nitrogen removal |
title_short |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone |
title_full |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone |
title_fullStr |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone |
title_full_unstemmed |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone |
title_sort |
Nitrogen removal from landfill leachate in constructed wetlands with reed and willow: Redox potential in the root zone |
author |
Bialowiec, Andrzej |
author_facet |
Bialowiec, Andrzej Albuquerque, Antonio Davies, Laura Randerson, Peter |
author_role |
author |
author2 |
Albuquerque, Antonio Davies, Laura Randerson, Peter |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
uBibliorum |
dc.contributor.author.fl_str_mv |
Bialowiec, Andrzej Albuquerque, Antonio Davies, Laura Randerson, Peter |
dc.subject.por.fl_str_mv |
Landfill leachate Wetlands Macrófitas Subsurface flow Remoção de azoto Nutrient removal Redox potential Nitrogen removal |
topic |
Landfill leachate Wetlands Macrófitas Subsurface flow Remoção de azoto Nutrient removal Redox potential Nitrogen removal |
description |
This study investigated the effects of reed and willow on bioremediation of landfill leachate in comparison with an unplanted control by measuring redox potential levels in the rhizosphere of microcosm systems in a greenhouse. Plants had a significant influence on redox potential relative to the plant-less system. Redox potential in the reed rhizosphere was anoxic (mean -102 +/- 85 mV), but it was the least negative, being significantly higher than in the willow (mean -286 +/- 118 mV), which had the lowest Eh. Redox potential fluctuated significantly in the willow rhizosphere during daylight hours, with large decreases in the morning. Levels of NH4+ decreased significantly in the first day of the experiment and remained at similar low levels in all three variants for the next four weeks of the experiment. Following this removal of ammonia significant peaks in NO2- occurred in the control and reed tanks on the 1st day, and again on 14th day in the control tank up to 13 mg/dm(3). In the willow tank there was also one significant peak of NO2- in the first week, but only up to 0.5 mg/dm(3). Significant accumulation, within 21 days of NO3- in all variants was observed, but in tanks with reed and willow the concentration of NO3- remained significantly lower (<4 mg/dm(3)) than in the unplanted tank (similar to 35 mg/dm(3)). Final levels of total-nitrogen, nitrate and chemical oxygen demand were considerably lower in the reed and willow tank than in the unplanted tank. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04 2012-04-01T00:00:00Z 2014-06-30T16:09:12Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.6/1953 |
url |
http://hdl.handle.net/10400.6/1953 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1095-8630 10.1016/j.jenvman.2011.11.014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799136335727951872 |