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Application of concrete surfaces as novel substrate for immobilization of TiO(2) nano powder in photocatalytic treatment of phenolic water

BACKGROUND: In this study, concrete application as a substrate for TiO(2) nano powder immobilization in heterogeneous photocatalytic process was evaluated. TiO(2) immobilization on the pervious concrete surface was done by different procedures containing slurry method (SM), cement mixed method (CMM)...

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Autores principales: Delnavaz, Mohammad, Ayati, Bita, Ganjidoust, Hossein, Sanjabi, Sohrab
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4524361/
https://www.ncbi.nlm.nih.gov/pubmed/26244097
http://dx.doi.org/10.1186/s40201-015-0214-y
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author Delnavaz, Mohammad
Ayati, Bita
Ganjidoust, Hossein
Sanjabi, Sohrab
author_facet Delnavaz, Mohammad
Ayati, Bita
Ganjidoust, Hossein
Sanjabi, Sohrab
author_sort Delnavaz, Mohammad
collection PubMed
description BACKGROUND: In this study, concrete application as a substrate for TiO(2) nano powder immobilization in heterogeneous photocatalytic process was evaluated. TiO(2) immobilization on the pervious concrete surface was done by different procedures containing slurry method (SM), cement mixed method (CMM) and different concrete sealer formulations. Irradiation of TiO(2) was prepared by UV-A and UV-C lamps. Phenolic wastewater was selected as a pollutant and efficiency of the process was determined in various operation conditions including influent phenol concentration, pH, TiO(2) concentration, immobilization method and UV lamp intensity. FINDINGS: The removal efficiency of photocatalytic process in 4 h irradiation time and phenol concentration ranges of 25–500 mg/L was more than 80 %. Intermediates were identified by GC/Mass and spectrophotometric analysis. CONCLUSIONS: According to the results, photocatalytic reactions followed the pseudo-first-order kinetics and can effectively treate phenol under optimal conditions.
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spelling pubmed-45243612015-08-05 Application of concrete surfaces as novel substrate for immobilization of TiO(2) nano powder in photocatalytic treatment of phenolic water Delnavaz, Mohammad Ayati, Bita Ganjidoust, Hossein Sanjabi, Sohrab J Environ Health Sci Eng Research Article BACKGROUND: In this study, concrete application as a substrate for TiO(2) nano powder immobilization in heterogeneous photocatalytic process was evaluated. TiO(2) immobilization on the pervious concrete surface was done by different procedures containing slurry method (SM), cement mixed method (CMM) and different concrete sealer formulations. Irradiation of TiO(2) was prepared by UV-A and UV-C lamps. Phenolic wastewater was selected as a pollutant and efficiency of the process was determined in various operation conditions including influent phenol concentration, pH, TiO(2) concentration, immobilization method and UV lamp intensity. FINDINGS: The removal efficiency of photocatalytic process in 4 h irradiation time and phenol concentration ranges of 25–500 mg/L was more than 80 %. Intermediates were identified by GC/Mass and spectrophotometric analysis. CONCLUSIONS: According to the results, photocatalytic reactions followed the pseudo-first-order kinetics and can effectively treate phenol under optimal conditions. BioMed Central 2015-08-04 /pmc/articles/PMC4524361/ /pubmed/26244097 http://dx.doi.org/10.1186/s40201-015-0214-y Text en © Delnavaz et al. 2015 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Delnavaz, Mohammad
Ayati, Bita
Ganjidoust, Hossein
Sanjabi, Sohrab
Application of concrete surfaces as novel substrate for immobilization of TiO(2) nano powder in photocatalytic treatment of phenolic water
title Application of concrete surfaces as novel substrate for immobilization of TiO(2) nano powder in photocatalytic treatment of phenolic water
title_full Application of concrete surfaces as novel substrate for immobilization of TiO(2) nano powder in photocatalytic treatment of phenolic water
title_fullStr Application of concrete surfaces as novel substrate for immobilization of TiO(2) nano powder in photocatalytic treatment of phenolic water
title_full_unstemmed Application of concrete surfaces as novel substrate for immobilization of TiO(2) nano powder in photocatalytic treatment of phenolic water
title_short Application of concrete surfaces as novel substrate for immobilization of TiO(2) nano powder in photocatalytic treatment of phenolic water
title_sort application of concrete surfaces as novel substrate for immobilization of tio(2) nano powder in photocatalytic treatment of phenolic water
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4524361/
https://www.ncbi.nlm.nih.gov/pubmed/26244097
http://dx.doi.org/10.1186/s40201-015-0214-y
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