Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation

Detalhes bibliográficos
Autor(a) principal: Presumido, Pedro Henrique
Data de Publicação: 2018
Outros Autores: Montes, Rosa, Quintana, Jose B., Rodil, Rosario, Feliciano, Manuel, Li Puma, Gianluca, Gomes, Ana I., Vilar, Vítor J.P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10198/15353
Resumo: A tubular porous borosilicate membrane contactor was investigated for ozone gas/water mass transfer and the removal of contaminants of emerging concern (CECs) in water. Ozone gas/water contact occurs on the mem-brane shell-side, which is coated with a photocatalyst (TiO2-P25), as the ozone gas stream is fed from the lumen side and permeates through the pores generating micro-sized ozone bubbles uniformly delivered to the annular reaction zone where the contaminated water to be treated flows. Under continuous flow, water pH at 3.0 and temperature at 20 oC, the volumetric mass transfer coefficient (KLa) ranged from 3.5 to 9.0 min- 1 and improved with the increase of gas flow rate (QG, 1.5-fold from 0.15 to 1.0 Ndm3 min-1) and liquid flow rate (QL, 2.0-fold from 20 to 50 L h-1), due to enhanced turbulence on the membrane shell-side and annular zone. The mass transfer efficiency was more pronounced as the QG decreased and the QL increased, which is advantageous for large-scale applications. The main resistances to ozone transfer were in the water phase boundary layer (53-76%) and in the membrane (24-47%; kM = (1.14 +/- 0.01) x 10-4 m s-1). For an ozone dose of 12 g m- 3 and residence time of 3.9 s, removals >= 80% were achieved for 13 of 19 CECs spiked in demineralized water (each 10 mu g L-1), demonstrating the applicability of this membrane contactor for ozonation treatment. Photocatalytic ozonation (O3/UVC/TiO2) did not significantly improve the treatment performance due to the low residence time inside the contactor.
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spelling Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidationOzone membrane contactorOzone gas/water mass transferOzone dosingMicropollutantsPhotocatalytic ozonationA tubular porous borosilicate membrane contactor was investigated for ozone gas/water mass transfer and the removal of contaminants of emerging concern (CECs) in water. Ozone gas/water contact occurs on the mem-brane shell-side, which is coated with a photocatalyst (TiO2-P25), as the ozone gas stream is fed from the lumen side and permeates through the pores generating micro-sized ozone bubbles uniformly delivered to the annular reaction zone where the contaminated water to be treated flows. Under continuous flow, water pH at 3.0 and temperature at 20 oC, the volumetric mass transfer coefficient (KLa) ranged from 3.5 to 9.0 min- 1 and improved with the increase of gas flow rate (QG, 1.5-fold from 0.15 to 1.0 Ndm3 min-1) and liquid flow rate (QL, 2.0-fold from 20 to 50 L h-1), due to enhanced turbulence on the membrane shell-side and annular zone. The mass transfer efficiency was more pronounced as the QG decreased and the QL increased, which is advantageous for large-scale applications. The main resistances to ozone transfer were in the water phase boundary layer (53-76%) and in the membrane (24-47%; kM = (1.14 +/- 0.01) x 10-4 m s-1). For an ozone dose of 12 g m- 3 and residence time of 3.9 s, removals >= 80% were achieved for 13 of 19 CECs spiked in demineralized water (each 10 mu g L-1), demonstrating the applicability of this membrane contactor for ozonation treatment. Photocatalytic ozonation (O3/UVC/TiO2) did not significantly improve the treatment performance due to the low residence time inside the contactor.ElsevierBiblioteca Digital do IPBPresumido, Pedro HenriqueMontes, RosaQuintana, Jose B.Rodil, RosarioFeliciano, ManuelLi Puma, GianlucaGomes, Ana I.Vilar, Vítor J.P.2018-01-31T10:00:00Z20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/15353engHenrique Presumido, Pedro; Montes, Rosa; Quintana, Jose B.; Rodil, Rosario; Feliciano, Manuel; Li Puma, Gianluca; Gomes, Ana I.; Vilar, Vítor J. P.. (2022). Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation. Journal Of Environmental Chemical Engineering. EISSN 2213-3437. 10:6, p. 1-132213-29292213-3437info: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:RCAAP2023-11-21T10:35:54Zoai:bibliotecadigital.ipb.pt:10198/15353Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:04:58.083720Repositório 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 Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation
title Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation
spellingShingle Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation
Presumido, Pedro Henrique
Ozone membrane contactor
Ozone gas/water mass transfer
Ozone dosing
Micropollutants
Photocatalytic ozonation
title_short Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation
title_full Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation
title_fullStr Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation
title_full_unstemmed Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation
title_sort Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation
author Presumido, Pedro Henrique
author_facet Presumido, Pedro Henrique
Montes, Rosa
Quintana, Jose B.
Rodil, Rosario
Feliciano, Manuel
Li Puma, Gianluca
Gomes, Ana I.
Vilar, Vítor J.P.
author_role author
author2 Montes, Rosa
Quintana, Jose B.
Rodil, Rosario
Feliciano, Manuel
Li Puma, Gianluca
Gomes, Ana I.
Vilar, Vítor J.P.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Presumido, Pedro Henrique
Montes, Rosa
Quintana, Jose B.
Rodil, Rosario
Feliciano, Manuel
Li Puma, Gianluca
Gomes, Ana I.
Vilar, Vítor J.P.
dc.subject.por.fl_str_mv Ozone membrane contactor
Ozone gas/water mass transfer
Ozone dosing
Micropollutants
Photocatalytic ozonation
topic Ozone membrane contactor
Ozone gas/water mass transfer
Ozone dosing
Micropollutants
Photocatalytic ozonation
description A tubular porous borosilicate membrane contactor was investigated for ozone gas/water mass transfer and the removal of contaminants of emerging concern (CECs) in water. Ozone gas/water contact occurs on the mem-brane shell-side, which is coated with a photocatalyst (TiO2-P25), as the ozone gas stream is fed from the lumen side and permeates through the pores generating micro-sized ozone bubbles uniformly delivered to the annular reaction zone where the contaminated water to be treated flows. Under continuous flow, water pH at 3.0 and temperature at 20 oC, the volumetric mass transfer coefficient (KLa) ranged from 3.5 to 9.0 min- 1 and improved with the increase of gas flow rate (QG, 1.5-fold from 0.15 to 1.0 Ndm3 min-1) and liquid flow rate (QL, 2.0-fold from 20 to 50 L h-1), due to enhanced turbulence on the membrane shell-side and annular zone. The mass transfer efficiency was more pronounced as the QG decreased and the QL increased, which is advantageous for large-scale applications. The main resistances to ozone transfer were in the water phase boundary layer (53-76%) and in the membrane (24-47%; kM = (1.14 +/- 0.01) x 10-4 m s-1). For an ozone dose of 12 g m- 3 and residence time of 3.9 s, removals >= 80% were achieved for 13 of 19 CECs spiked in demineralized water (each 10 mu g L-1), demonstrating the applicability of this membrane contactor for ozonation treatment. Photocatalytic ozonation (O3/UVC/TiO2) did not significantly improve the treatment performance due to the low residence time inside the contactor.
publishDate 2018
dc.date.none.fl_str_mv 2018-01-31T10:00:00Z
2022
2022-01-01T00:00:00Z
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/10198/15353
url http://hdl.handle.net/10198/15353
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Henrique Presumido, Pedro; Montes, Rosa; Quintana, Jose B.; Rodil, Rosario; Feliciano, Manuel; Li Puma, Gianluca; Gomes, Ana I.; Vilar, Vítor J. P.. (2022). Ozone membrane contactor to intensify gas/liquid mass transfer and contaminants of emerging concern oxidation. Journal Of Environmental Chemical Engineering. EISSN 2213-3437. 10:6, p. 1-13
2213-2929
2213-3437
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.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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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
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