Combination of Zinc Oxide Photocatalysis with Membrane Filtration for Surface Water Disinfection

Detalhes bibliográficos
Autor(a) principal: Sosa, Santiago Martínez
Data de Publicação: 2023
Outros Autores: Huertas, Rosa, Pereira, Vanessa Jorge
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.
id RCAP_416f3e84a7929a7b71e0b8c7d6066a0c
oai_identifier_str oai:run.unl.pt:10362/158470
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling 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
_version_ 1799138154553278464

Registros relacionados