Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides

This study deals with the development of efficient and economic electrochemical treatment processes to confront the treatment of liquid wastes containing non-polar organochlorine pesticides. In previous works, it was demonstrated that it is possible to use electrocoagulation (EC) as a concentration...

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Authors: Raschitor, Alexandra, Llanos López, Javier, Rodrigo Rodrigo, Manuel Andrés, Cañizares Cañizares, Pablo
Format: article
Publication Date:2019
Country:España
Institution:Universidad de Castilla-La Mancha
Repository:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/29296
Online Access:https://doi.org/10.1016/j.jenvman.2019.109289
http://hdl.handle.net/10578/29296
Access Level:Open access
Keyword:Organochlorine pesticides
BDD
Concentration
Electro-oxidation
Electro-fenton
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spelling Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticidesRaschitor, AlexandraLlanos López, JavierRodrigo Rodrigo, Manuel AndrésCañizares Cañizares, PabloOrganochlorine pesticidesBDDConcentrationElectro-oxidationElectro-fentonThis study deals with the development of efficient and economic electrochemical treatment processes to confront the treatment of liquid wastes containing non-polar organochlorine pesticides. In previous works, it was demonstrated that it is possible to use electrocoagulation (EC) as a concentration technique for a model organochlorine pesticide (oxyfluorfen). Within this framework, the present work describes a process for the degradation of wastes containing non-polar organochlorines (oxyfluorfen or lindane) in two consecutive stages: 1) a first stage of concentration by electrocoagulation; 2) a second stage of electrochemical degradation by electro-oxidation (EO) or electro-Fenton (EF). The first result reached in the present work is that it is possible to remove close to 50% of both pollutants using EO and more that 94% using EF. Additionally, it was proved that the addition of a pre-concentration stage decreases by a factor of 20 the power consumption needed to deplete by EO the same amount of the initial pollutant. Moreover, when EF process is performed to the concentrated stream, the power consumption is further reduced, getting values (for 1-log removal) as low as 14.51 kWh m−3 for oxyfluorfen decrease and 49.7 kWh m−3 for lindane. These results strengthen the fact that the removal efficiency increases with the concentration of the pollutant and demonstrate that the combination of concentration steps and electrochemical degradation technologies is an efficient and promising alternative for the degradation of non-polar organochlorines.Elsevier202220222019info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://doi.org/10.1016/j.jenvman.2019.109289http://hdl.handle.net/10578/29296reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésSpanish Ministry of Economy, Industry and Competitiveness and European Union through project CTM2016-76197-R (AEI/FEDER, UE)info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/292962026-05-27T07:36:41Z
dc.title.none.fl_str_mv Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides
title Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides
spellingShingle Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides
Raschitor, Alexandra
Organochlorine pesticides
BDD
Concentration
Electro-oxidation
Electro-fenton
title_short Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides
title_full Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides
title_fullStr Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides
title_full_unstemmed Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides
title_sort Combined electrochemical processes for the efficient degradation of non-polar organochlorine pesticides
dc.creator.none.fl_str_mv Raschitor, Alexandra
Llanos López, Javier
Rodrigo Rodrigo, Manuel Andrés
Cañizares Cañizares, Pablo
author Raschitor, Alexandra
author_facet Raschitor, Alexandra
Llanos López, Javier
Rodrigo Rodrigo, Manuel Andrés
Cañizares Cañizares, Pablo
author_role author
author2 Llanos López, Javier
Rodrigo Rodrigo, Manuel Andrés
Cañizares Cañizares, Pablo
author2_role author
author
author
dc.subject.none.fl_str_mv Organochlorine pesticides
BDD
Concentration
Electro-oxidation
Electro-fenton
topic Organochlorine pesticides
BDD
Concentration
Electro-oxidation
Electro-fenton
description This study deals with the development of efficient and economic electrochemical treatment processes to confront the treatment of liquid wastes containing non-polar organochlorine pesticides. In previous works, it was demonstrated that it is possible to use electrocoagulation (EC) as a concentration technique for a model organochlorine pesticide (oxyfluorfen). Within this framework, the present work describes a process for the degradation of wastes containing non-polar organochlorines (oxyfluorfen or lindane) in two consecutive stages: 1) a first stage of concentration by electrocoagulation; 2) a second stage of electrochemical degradation by electro-oxidation (EO) or electro-Fenton (EF). The first result reached in the present work is that it is possible to remove close to 50% of both pollutants using EO and more that 94% using EF. Additionally, it was proved that the addition of a pre-concentration stage decreases by a factor of 20 the power consumption needed to deplete by EO the same amount of the initial pollutant. Moreover, when EF process is performed to the concentrated stream, the power consumption is further reduced, getting values (for 1-log removal) as low as 14.51 kWh m−3 for oxyfluorfen decrease and 49.7 kWh m−3 for lindane. These results strengthen the fact that the removal efficiency increases with the concentration of the pollutant and demonstrate that the combination of concentration steps and electrochemical degradation technologies is an efficient and promising alternative for the degradation of non-polar organochlorines.
publishDate 2019
dc.date.none.fl_str_mv 2019
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.2019.109289
http://hdl.handle.net/10578/29296
url https://doi.org/10.1016/j.jenvman.2019.109289
http://hdl.handle.net/10578/29296
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Spanish Ministry of Economy, Industry and Competitiveness and European Union through project CTM2016-76197-R (AEI/FEDER, UE)
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 15,300719

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