Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge

This work focuses on the evaluation of the electrochemical dewatering of sludge obtained in the coagulation of wastes polluted with oxyfluorfen. To do this, sludge samples were treated, aiming not only to reduce the sludge volume, but also to facilitate the degradation of oxyfluorfen contained in th...

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Detalhes bibliográficos
Autores: Acosta-Santoyo, Gustavo, Raschitor, Alexandra, Bustos, Erika, Llanos López, Javier, Cañizares Cañizares, Pablo, Rodrigo Rodrigo, Manuel Andrés
Formato: artículo
Fecha de publicación:2020
País:España
Recursos:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/29345
Acesso em linha:https://doi.org/10.1016/j.jenvman.2019.110015
http://hdl.handle.net/10578/29345
Access Level:acceso abierto
Palavra-chave:Coagulation-flocculation
Electrochemical dewatering
Highly polluted sludge
Organochlorine pesticides
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spelling Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludgeAcosta-Santoyo, GustavoRaschitor, AlexandraBustos, ErikaLlanos López, JavierCañizares Cañizares, PabloRodrigo Rodrigo, Manuel AndrésCoagulation-flocculationElectrochemical dewateringHighly polluted sludgeOrganochlorine pesticidesThis work focuses on the evaluation of the electrochemical dewatering of sludge obtained in the coagulation of wastes polluted with oxyfluorfen. To do this, sludge samples were treated, aiming not only to reduce the sludge volume, but also to facilitate the degradation of oxyfluorfen contained in the cake via electrolysis with a boron-doped diamond anode. Results show that water can be effectively recovered through three sequential stages. First, a gravity-driven stage, that can recover around 60% of initial volume and where no oxyfluorfen is dragged. Then, a second stage that involves the application of pressure and which accounts for the recuperation of an additional 25% of the total volume of the water removed and in which oxyfluorfen also remained in the cake. Finally, an electrochemical stage, which involves the application of electricity with increasing electric fields (1.0, 2.0, 4.0, and 16.0 V cm−1), accounting for the recovery of the rest of water released and where an electrolytic degradation of oxyfluorfen is obtained, whose extension depends on the electrode configuration used in the electro-dewatering cell. This electrode configuration also influences the retention or loss of oxyfluorfen from the cake, being the optimum choice the placement of the cathode downstream, next to the outlet of the dewatering cell.Elsevier202220222020info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://doi.org/10.1016/j.jenvman.2019.110015http://hdl.handle.net/10578/29345reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésEU and Spanish Government through the project CMT2016-76197-R (AEI/FEDER, UE)Mexican National Council of Science and Technology (CONACyT) through the grant for post-doctoral fellowship to G. Acosta-Santoyo (CVU: 264785) at the UCLM in collaboration with the Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S.C. (CIDETEQ, Mexico)info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/293452026-05-27T07:36:41Z
dc.title.none.fl_str_mv Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge
title Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge
spellingShingle Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge
Acosta-Santoyo, Gustavo
Coagulation-flocculation
Electrochemical dewatering
Highly polluted sludge
Organochlorine pesticides
title_short Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge
title_full Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge
title_fullStr Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge
title_full_unstemmed Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge
title_sort Electrochemically assisted dewatering for the removal of oxyfluorfen from a coagulation/flocculation sludge
dc.creator.none.fl_str_mv Acosta-Santoyo, Gustavo
Raschitor, Alexandra
Bustos, Erika
Llanos López, Javier
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author Acosta-Santoyo, Gustavo
author_facet Acosta-Santoyo, Gustavo
Raschitor, Alexandra
Bustos, Erika
Llanos López, Javier
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author_role author
author2 Raschitor, Alexandra
Bustos, Erika
Llanos López, Javier
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Coagulation-flocculation
Electrochemical dewatering
Highly polluted sludge
Organochlorine pesticides
topic Coagulation-flocculation
Electrochemical dewatering
Highly polluted sludge
Organochlorine pesticides
description This work focuses on the evaluation of the electrochemical dewatering of sludge obtained in the coagulation of wastes polluted with oxyfluorfen. To do this, sludge samples were treated, aiming not only to reduce the sludge volume, but also to facilitate the degradation of oxyfluorfen contained in the cake via electrolysis with a boron-doped diamond anode. Results show that water can be effectively recovered through three sequential stages. First, a gravity-driven stage, that can recover around 60% of initial volume and where no oxyfluorfen is dragged. Then, a second stage that involves the application of pressure and which accounts for the recuperation of an additional 25% of the total volume of the water removed and in which oxyfluorfen also remained in the cake. Finally, an electrochemical stage, which involves the application of electricity with increasing electric fields (1.0, 2.0, 4.0, and 16.0 V cm−1), accounting for the recovery of the rest of water released and where an electrolytic degradation of oxyfluorfen is obtained, whose extension depends on the electrode configuration used in the electro-dewatering cell. This electrode configuration also influences the retention or loss of oxyfluorfen from the cake, being the optimum choice the placement of the cathode downstream, next to the outlet of the dewatering cell.
publishDate 2020
dc.date.none.fl_str_mv 2020
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.jenvman.2019.110015
http://hdl.handle.net/10578/29345
url https://doi.org/10.1016/j.jenvman.2019.110015
http://hdl.handle.net/10578/29345
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv EU and Spanish Government through the project CMT2016-76197-R (AEI/FEDER, UE)
Mexican National Council of Science and Technology (CONACyT) through the grant for post-doctoral fellowship to G. Acosta-Santoyo (CVU: 264785) at the UCLM in collaboration with the Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S.C. (CIDETEQ, Mexico)
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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