Denitrification of groundwater with pyrite and Thiobacillus denitrificans

Anaerobic batch and flow-through experiments were performed to confirm the role of pyrite as electron donor in bacterial denitrification and to look into the feasibility of pyrite-driven denitrification of nitrate- contaminated groundwater. Nitrate reduction was satisfactorily accomplished in experi...

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Authors: Torrentó, Clara, Cama i Robert, Jordi, Urmeneta, Jordi, Otero Pérez, Neus, Soler i Gil, Albert
Format: article
Status:Versión aceptada para publicación
Publication Date:2010
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/155222
Online Access:https://hdl.handle.net/2445/155222
Access Level:Open access
Keyword:Contaminació de l'aigua
Nitrats
Desnitrificació
Hidrologia d'aigües subterrànies
Water pollution
Nitrates
Denitrification
Groundwater hydrology
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spelling Denitrification of groundwater with pyrite and Thiobacillus denitrificansTorrentó, ClaraCama i Robert, JordiUrmeneta, JordiOtero Pérez, NeusSoler i Gil, AlbertContaminació de l'aiguaNitratsDesnitrificacióHidrologia d'aigües subterràniesWater pollutionNitratesDenitrificationGroundwater hydrologyAnaerobic batch and flow-through experiments were performed to confirm the role of pyrite as electron donor in bacterial denitrification and to look into the feasibility of pyrite-driven denitrification of nitrate- contaminated groundwater. Nitrate reduction was satisfactorily accomplished in experiments with pyrite as the sole electron donor, in presence of the autotrophic denitrifying bacterium Thiobacillus denitrificans and at nitrate concentrations comparable to those observed in contaminated groundwater. The experimental results corroborated field studies in which the reaction occurred in aquifers. Nitrate reduction rates and nitrate removal efficiencies were dependent on pyrite grain size, initial nitrate concentration, nitrate-loading rate and pH. The N and O isotopic enrichment factors (εN and εO) obtained experimentally for pyrite-driven nitrate reduction by T. denitrificans ranged from − 13.5¿ to − 15.0¿ and from − 19.0¿ to − 22.9¿, respectively. These values indicated the magnitude of the isotope fractionation that occurs in nitrate- contaminated aquifers dominated by autotrophic denitrification.Elsevier B.V.2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/155222Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1016/j.chemgeo.2010.09.003Chemical Geology, 2010, vol. 278, num. 1-2, p. 80-91https://doi.org/10.1016/j.chemgeo.2010.09.003(c) Elsevier B.V., 2010info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1552222026-05-27T06:46:51Z
dc.title.none.fl_str_mv Denitrification of groundwater with pyrite and Thiobacillus denitrificans
title Denitrification of groundwater with pyrite and Thiobacillus denitrificans
spellingShingle Denitrification of groundwater with pyrite and Thiobacillus denitrificans
Torrentó, Clara
Contaminació de l'aigua
Nitrats
Desnitrificació
Hidrologia d'aigües subterrànies
Water pollution
Nitrates
Denitrification
Groundwater hydrology
title_short Denitrification of groundwater with pyrite and Thiobacillus denitrificans
title_full Denitrification of groundwater with pyrite and Thiobacillus denitrificans
title_fullStr Denitrification of groundwater with pyrite and Thiobacillus denitrificans
title_full_unstemmed Denitrification of groundwater with pyrite and Thiobacillus denitrificans
title_sort Denitrification of groundwater with pyrite and Thiobacillus denitrificans
dc.creator.none.fl_str_mv Torrentó, Clara
Cama i Robert, Jordi
Urmeneta, Jordi
Otero Pérez, Neus
Soler i Gil, Albert
author Torrentó, Clara
author_facet Torrentó, Clara
Cama i Robert, Jordi
Urmeneta, Jordi
Otero Pérez, Neus
Soler i Gil, Albert
author_role author
author2 Cama i Robert, Jordi
Urmeneta, Jordi
Otero Pérez, Neus
Soler i Gil, Albert
author2_role author
author
author
author
dc.subject.none.fl_str_mv Contaminació de l'aigua
Nitrats
Desnitrificació
Hidrologia d'aigües subterrànies
Water pollution
Nitrates
Denitrification
Groundwater hydrology
topic Contaminació de l'aigua
Nitrats
Desnitrificació
Hidrologia d'aigües subterrànies
Water pollution
Nitrates
Denitrification
Groundwater hydrology
description Anaerobic batch and flow-through experiments were performed to confirm the role of pyrite as electron donor in bacterial denitrification and to look into the feasibility of pyrite-driven denitrification of nitrate- contaminated groundwater. Nitrate reduction was satisfactorily accomplished in experiments with pyrite as the sole electron donor, in presence of the autotrophic denitrifying bacterium Thiobacillus denitrificans and at nitrate concentrations comparable to those observed in contaminated groundwater. The experimental results corroborated field studies in which the reaction occurred in aquifers. Nitrate reduction rates and nitrate removal efficiencies were dependent on pyrite grain size, initial nitrate concentration, nitrate-loading rate and pH. The N and O isotopic enrichment factors (εN and εO) obtained experimentally for pyrite-driven nitrate reduction by T. denitrificans ranged from − 13.5¿ to − 15.0¿ and from − 19.0¿ to − 22.9¿, respectively. These values indicated the magnitude of the isotope fractionation that occurs in nitrate- contaminated aquifers dominated by autotrophic denitrification.
publishDate 2010
dc.date.none.fl_str_mv 2010
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/2445/155222
url https://hdl.handle.net/2445/155222
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.chemgeo.2010.09.003
Chemical Geology, 2010, vol. 278, num. 1-2, p. 80-91
https://doi.org/10.1016/j.chemgeo.2010.09.003
dc.rights.none.fl_str_mv (c) Elsevier B.V., 2010
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier B.V., 2010
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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