Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection
Autor(a) principal: | |
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Data de Publicação: | 2023 |
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/10362/158470 |
Resumo: | Funding Information: This research was funded through the European Commission-Education, Audiovisual and Culture Executive Agency (EACEA) for the Erasmus Mundus scholarship under the program: Erasmus Mundus Master in Membrane Engineering for a Sustainable Word (EM3E-4SW), Project Number- 574441-EPP-1-2016-1-FR-EPPKA1-JMD-MOB as well as the financial support from Fundação para a Ciência e a Tecnologia through the grants CEECIND/02919/2018 and PTDC/EAM-AMB/30989/2017. Publisher Copyright: © 2023 by the authors. |
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Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfectionmembrane processesphotocatalysiswater disinfectionZnO nanoparticlesChemical Engineering (miscellaneous)Process Chemistry and TechnologyFiltration and SeparationFunding Information: This research was funded through the European Commission-Education, Audiovisual and Culture Executive Agency (EACEA) for the Erasmus Mundus scholarship under the program: Erasmus Mundus Master in Membrane Engineering for a Sustainable Word (EM3E-4SW), Project Number- 574441-EPP-1-2016-1-FR-EPPKA1-JMD-MOB as well as the financial support from Fundação para a Ciência e a Tecnologia through the grants CEECIND/02919/2018 and PTDC/EAM-AMB/30989/2017. Publisher Copyright: © 2023 by the authors.Increase water usage has led to its deterioration. Pollutants are easily found in the aquatic environment and treatment techniques must keep improving to meet the current needs and future demands. Membranes are attractive for water treatment, but limitations like fouling and the highly concentrate produced affect their performance. Combining membrane filtration with photocatalysis provides the opportunity to integrate a self-cleaning step during membrane filtration. In this work, we studied two simple and efficient approaches to combine membrane filtration with zinc oxide nanoparticles (using the catalyst in suspension and immobilized) activated by light emitting diodes (LED) emitting light at 365 nm. Both systems were used to test the disinfection efficiency in real surface water, compared in terms of catalyst concentration in the permeate stream (below the limit of detection) and its recovery after filtration (higher that 74%). The system’s capability to retain and inactivate target bacteria (total coliforms and E. coli) in the retentate stream was tested with samples of real surface water. The results obtained show that both configurations led to an improved performance in comparison to the membrane treatment alone with a higher retention of the bacteria (not detected in the permeate samples) and higher treatment of the retentate. For the modified membranes, different catalyst concentrations and thermal treatments were tested. The performance of all the processes was evaluated in terms of the level of treatment achieved and the permeate flux. All the modified membranes showed an efficient retention of the target bacteria from surface water, with higher performances than the unmodified membrane (96.2% for total coliforms and 94.9% for E. coli). Remarkable retention and treatment of the retentate was achieved using a membrane modified with a catalyst load of 125 mg subject during two hours to a thermal treatment of 300 °C. This modification has a performance comparable to the system with the same catalyst load in suspension. During operation, the permeate flux reduction is lower with the modified membranes which could lead to longer operation times without the need of further cleaning or replacement. The combined system, ceramic membranes modified with zinc oxide and UV-A LEDs proved to be effective to retain and disinfect water quality indicator bacteria present in real surface water matrices.LAQV@REQUIMTEDQ - Departamento de QuímicaInstituto de Tecnologia Química e Biológica António Xavier (ITQB)RUNSosa, Santiago MartínezHuertas, RosaPereira, Vanessa Jorge2023-09-29T22:19:58Z2023-012023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/158470eng0076-6356PURE: 64804854https://doi.org/10.3390/membranes13010056info: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:RCAAP2024-03-11T05:40:52Zoai:run.unl.pt:10362/158470Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:57:09.302130Repositório 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 |
Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection |
title |
Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection |
spellingShingle |
Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection Sosa, Santiago Martínez membrane processes photocatalysis water disinfection ZnO nanoparticles Chemical Engineering (miscellaneous) Process Chemistry and Technology Filtration and Separation |
title_short |
Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection |
title_full |
Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection |
title_fullStr |
Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection |
title_full_unstemmed |
Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection |
title_sort |
Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection |
author |
Sosa, Santiago Martínez |
author_facet |
Sosa, Santiago Martínez Huertas, Rosa Pereira, Vanessa Jorge |
author_role |
author |
author2 |
Huertas, Rosa Pereira, Vanessa Jorge |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
LAQV@REQUIMTE DQ - Departamento de Química Instituto de Tecnologia Química e Biológica António Xavier (ITQB) RUN |
dc.contributor.author.fl_str_mv |
Sosa, Santiago Martínez Huertas, Rosa Pereira, Vanessa Jorge |
dc.subject.por.fl_str_mv |
membrane processes photocatalysis water disinfection ZnO nanoparticles Chemical Engineering (miscellaneous) Process Chemistry and Technology Filtration and Separation |
topic |
membrane processes photocatalysis water disinfection ZnO nanoparticles Chemical Engineering (miscellaneous) Process Chemistry and Technology Filtration and Separation |
description |
Funding Information: This research was funded through the European Commission-Education, Audiovisual and Culture Executive Agency (EACEA) for the Erasmus Mundus scholarship under the program: Erasmus Mundus Master in Membrane Engineering for a Sustainable Word (EM3E-4SW), Project Number- 574441-EPP-1-2016-1-FR-EPPKA1-JMD-MOB as well as the financial support from Fundação para a Ciência e a Tecnologia through the grants CEECIND/02919/2018 and PTDC/EAM-AMB/30989/2017. Publisher Copyright: © 2023 by the authors. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-09-29T22:19:58Z 2023-01 2023-01-01T00:00:00Z |
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/10362/158470 |
url |
http://hdl.handle.net/10362/158470 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0076-6356 PURE: 64804854 https://doi.org/10.3390/membranes13010056 |
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.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 |
instname_str |
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 |
repository.mail.fl_str_mv |
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1799138154553278464 |