Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter

Biofilters degrade only a small fraction of the natural organic matter (NOM) contained in seawater which is the leading cause of biofouling in downstream processes. This work studies the effects of chemical additions on NOM biodegradation by biofilters. In this work, biofiltration of seawater with a...

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Detalles Bibliográficos
Autores: Simón, Francesc Xavier, Rudé i Payró, Elisabet, Berdalet i Andrés, Elisa, Llorens Llacuna, Joan, Baig, Sylvie
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2013
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/34462
Acceso en línea:https://hdl.handle.net/2445/34462
Access Level:acceso abierto
Palabra clave:Aigua de mar
Biodegradació
Depuració de l'aigua
Ecologia marina
Nitrogen
Seawater
Biodegradation
Water purification
Marine ecology
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spelling Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilterSimón, Francesc XavierRudé i Payró, ElisabetBerdalet i Andrés, ElisaLlorens Llacuna, JoanBaig, SylvieAigua de marBiodegradacióDepuració de l'aiguaEcologia marinaNitrogenSeawaterBiodegradationWater purificationMarine ecologyNitrogenBiofilters degrade only a small fraction of the natural organic matter (NOM) contained in seawater which is the leading cause of biofouling in downstream processes. This work studies the effects of chemical additions on NOM biodegradation by biofilters. In this work, biofiltration of seawater with an empty bed contact time (EBCT) of 6 min and a hydraulic loading rate of 10 m h-1 reduces the biological oxygen demand (BOD7) by 8%, the dissolved organic carbon (DOC) by 6% and the UV absorbance at 254 nm (A254) by 7%. Different amounts of ammonium chloride are added to the seawater (up to twice the total dissolved nitrogen in untreated seawater) to study its possible effect on the removal of NOM by a pilot-scale biofilter. Seawater is amended with different amounts of easily biodegradable dissolved organic carbon (BDOC) supplied as sodium acetate (up to twice the DOC) for the same purpose. The results of this work reveal that the ammonium chloride additions do not significantly affect NOM removal and the sodium acetate is completely consumed by the biofiltration process. For both types of chemical additions, the BOD7, DOC and A254 in the outlet stream of the biofilter are similar to the values for the untreated control. These results indicate that this biofilter easily removes the BDOC from the seawater when the EBCT is not above 6 min. Furthermore, nitrogen does not limit the NOM biodegradation in seawater under these experimental conditions.Elsevier Ltd2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/34462Articles publicats en revistes (Enginyeria Química i Química Analítica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: http://dx.doi.org/10.1016/j.chemosphere.2013.02.056Chemosphere, 2013, vol. 13, p. 1-21http://dx.doi.org/10.1016/j.chemosphere.2013.02.056(c) Elsevier Ltd, 2013info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/344622026-05-27T06:46:51Z
dc.title.none.fl_str_mv Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
title Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
spellingShingle Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
Simón, Francesc Xavier
Aigua de mar
Biodegradació
Depuració de l'aigua
Ecologia marina
Nitrogen
Seawater
Biodegradation
Water purification
Marine ecology
Nitrogen
title_short Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
title_full Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
title_fullStr Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
title_full_unstemmed Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
title_sort Effects of inorganic nitrogen (NH4Cl) and biodegradable organic carbon (CH3COONa) additions on a pilot-scale seawater biofilter
dc.creator.none.fl_str_mv Simón, Francesc Xavier
Rudé i Payró, Elisabet
Berdalet i Andrés, Elisa
Llorens Llacuna, Joan
Baig, Sylvie
author Simón, Francesc Xavier
author_facet Simón, Francesc Xavier
Rudé i Payró, Elisabet
Berdalet i Andrés, Elisa
Llorens Llacuna, Joan
Baig, Sylvie
author_role author
author2 Rudé i Payró, Elisabet
Berdalet i Andrés, Elisa
Llorens Llacuna, Joan
Baig, Sylvie
author2_role author
author
author
author
dc.subject.none.fl_str_mv Aigua de mar
Biodegradació
Depuració de l'aigua
Ecologia marina
Nitrogen
Seawater
Biodegradation
Water purification
Marine ecology
Nitrogen
topic Aigua de mar
Biodegradació
Depuració de l'aigua
Ecologia marina
Nitrogen
Seawater
Biodegradation
Water purification
Marine ecology
Nitrogen
description Biofilters degrade only a small fraction of the natural organic matter (NOM) contained in seawater which is the leading cause of biofouling in downstream processes. This work studies the effects of chemical additions on NOM biodegradation by biofilters. In this work, biofiltration of seawater with an empty bed contact time (EBCT) of 6 min and a hydraulic loading rate of 10 m h-1 reduces the biological oxygen demand (BOD7) by 8%, the dissolved organic carbon (DOC) by 6% and the UV absorbance at 254 nm (A254) by 7%. Different amounts of ammonium chloride are added to the seawater (up to twice the total dissolved nitrogen in untreated seawater) to study its possible effect on the removal of NOM by a pilot-scale biofilter. Seawater is amended with different amounts of easily biodegradable dissolved organic carbon (BDOC) supplied as sodium acetate (up to twice the DOC) for the same purpose. The results of this work reveal that the ammonium chloride additions do not significantly affect NOM removal and the sodium acetate is completely consumed by the biofiltration process. For both types of chemical additions, the BOD7, DOC and A254 in the outlet stream of the biofilter are similar to the values for the untreated control. These results indicate that this biofilter easily removes the BDOC from the seawater when the EBCT is not above 6 min. Furthermore, nitrogen does not limit the NOM biodegradation in seawater under these experimental conditions.
publishDate 2013
dc.date.none.fl_str_mv 2013
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/2445/34462
url https://hdl.handle.net/2445/34462
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.chemosphere.2013.02.056
Chemosphere, 2013, vol. 13, p. 1-21
http://dx.doi.org/10.1016/j.chemosphere.2013.02.056
dc.rights.none.fl_str_mv (c) Elsevier Ltd, 2013
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier Ltd, 2013
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Química i Química Analítica)
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 15,301603

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