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Effective Decolorization of Rhodamine B by a Ti Foam-Based Photocatalytic Membrane Reactor

[Image: see text] In this study, a Ti foam-based photocatalytic membrane reactor (PMR) was constructed for rhodamine B (RhB) wastewater decolorization. Ti foam was chosen as a membrane and visible-light-driven C(3)N(4) was chosen as a photocatalyst. The results showed that the decolorization efficie...

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Autores principales: Chen, Xiaoping, Wei, Yuansong, Chen, Bohong, Fu, Jiaqi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7689921/
https://www.ncbi.nlm.nih.gov/pubmed/33251443
http://dx.doi.org/10.1021/acsomega.0c04476
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author Chen, Xiaoping
Wei, Yuansong
Chen, Bohong
Fu, Jiaqi
author_facet Chen, Xiaoping
Wei, Yuansong
Chen, Bohong
Fu, Jiaqi
author_sort Chen, Xiaoping
collection PubMed
description [Image: see text] In this study, a Ti foam-based photocatalytic membrane reactor (PMR) was constructed for rhodamine B (RhB) wastewater decolorization. Ti foam was chosen as a membrane and visible-light-driven C(3)N(4) was chosen as a photocatalyst. The results showed that the decolorization efficiency could be up to 100% with a flow rate of 6.93 mL/min when the PMR was applied in the treatment of a 30 mg/L RhB solution and the concentration of C(3)N(4) was 1 g/L. pH played an important role in the decolorization performance of the PMR. Alkalinity was not conducive to the decolorization of RhB in the PMR, which was mainly due to the property that RhB was difficult to dissolve in an alkaline solution. Membrane fouling was mainly caused by a C(3)N(4) photocatalyst, while the effect of RhB on membrane fouling was negligible. Membrane fouling could be retarded when the PMR was applied for RhB treatment under visible-light irradiation, which was because of photoinduced hydrophilicity of C(3)N(4). The membrane flux could be restored to its initial values after simple ultrasonic cleaning and backwashing. This was due to the large difference between the pore size of Ti foam and the particle size of C(3)N(4) and the super hydrophilicity of Ti foam and C(3)N(4).
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spelling pubmed-76899212020-11-27 Effective Decolorization of Rhodamine B by a Ti Foam-Based Photocatalytic Membrane Reactor Chen, Xiaoping Wei, Yuansong Chen, Bohong Fu, Jiaqi ACS Omega [Image: see text] In this study, a Ti foam-based photocatalytic membrane reactor (PMR) was constructed for rhodamine B (RhB) wastewater decolorization. Ti foam was chosen as a membrane and visible-light-driven C(3)N(4) was chosen as a photocatalyst. The results showed that the decolorization efficiency could be up to 100% with a flow rate of 6.93 mL/min when the PMR was applied in the treatment of a 30 mg/L RhB solution and the concentration of C(3)N(4) was 1 g/L. pH played an important role in the decolorization performance of the PMR. Alkalinity was not conducive to the decolorization of RhB in the PMR, which was mainly due to the property that RhB was difficult to dissolve in an alkaline solution. Membrane fouling was mainly caused by a C(3)N(4) photocatalyst, while the effect of RhB on membrane fouling was negligible. Membrane fouling could be retarded when the PMR was applied for RhB treatment under visible-light irradiation, which was because of photoinduced hydrophilicity of C(3)N(4). The membrane flux could be restored to its initial values after simple ultrasonic cleaning and backwashing. This was due to the large difference between the pore size of Ti foam and the particle size of C(3)N(4) and the super hydrophilicity of Ti foam and C(3)N(4). American Chemical Society 2020-11-11 /pmc/articles/PMC7689921/ /pubmed/33251443 http://dx.doi.org/10.1021/acsomega.0c04476 Text en © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Chen, Xiaoping
Wei, Yuansong
Chen, Bohong
Fu, Jiaqi
Effective Decolorization of Rhodamine B by a Ti Foam-Based Photocatalytic Membrane Reactor
title Effective Decolorization of Rhodamine B by a Ti Foam-Based Photocatalytic Membrane Reactor
title_full Effective Decolorization of Rhodamine B by a Ti Foam-Based Photocatalytic Membrane Reactor
title_fullStr Effective Decolorization of Rhodamine B by a Ti Foam-Based Photocatalytic Membrane Reactor
title_full_unstemmed Effective Decolorization of Rhodamine B by a Ti Foam-Based Photocatalytic Membrane Reactor
title_short Effective Decolorization of Rhodamine B by a Ti Foam-Based Photocatalytic Membrane Reactor
title_sort effective decolorization of rhodamine b by a ti foam-based photocatalytic membrane reactor
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7689921/
https://www.ncbi.nlm.nih.gov/pubmed/33251443
http://dx.doi.org/10.1021/acsomega.0c04476
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