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Screening of combined zeolite-ozone system for phenol and COD removal

In this study, four zeolites in H-form (HZSM-5, H-Beta, H-Mordenite, and H-USY) were tested at different operating conditions for removal of phenol and COD by ozonation. The process variables include concentration of phenol in solution, ozonated airflow rates, pH of solution, temperature, and reacti...

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Main Authors: Saidina Amin, Nor Aishah, Akhtar, Javaid, Rai, H. K.
Format: Article
Published: Elsevier B.V. 2010
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/26580/
http://dx.doi.org/10.1016/j.cej.2010.01.042
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spelling my.utm.265802018-10-31T12:30:35Z http://eprints.utm.my/id/eprint/26580/ Screening of combined zeolite-ozone system for phenol and COD removal Saidina Amin, Nor Aishah Akhtar, Javaid Rai, H. K. TP Chemical technology In this study, four zeolites in H-form (HZSM-5, H-Beta, H-Mordenite, and H-USY) were tested at different operating conditions for removal of phenol and COD by ozonation. The process variables include concentration of phenol in solution, ozonated airflow rates, pH of solution, temperature, and reaction time. According to experimental results, combination of zeolite and ozone was able to remove both phenol and COD effectively compared to without ozone. Zeolite mainly acted as adsorbent, providing surface for reaction between ozone and phenol. However, the adsorption capacity of zeolites decreased at higher pH due to the formation of OH radicals, which diminished the surface reactions, but enhanced the bulk removal of phenol. Large flow rates of ozonated air and ambient temperature were suitable for removal of both phenol and COD. A maximum of 50.5% phenol was removed by HZSM-5(80) at 100 ppm of phenol concentration. HZSM-5(80) removed both phenol and COD effectively compared to other zeolites at all operating conditions except when phenol concentration was higher at which H-USY was a better catalyst. Elsevier B.V. 2010 Article PeerReviewed Saidina Amin, Nor Aishah and Akhtar, Javaid and Rai, H. K. (2010) Screening of combined zeolite-ozone system for phenol and COD removal. Chemical Engineering Journal, 158 (3). pp. 520-527. ISSN 1385-8947 http://dx.doi.org/10.1016/j.cej.2010.01.042 DOI:10.1016/j.cej.2010.01.042
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Saidina Amin, Nor Aishah
Akhtar, Javaid
Rai, H. K.
Screening of combined zeolite-ozone system for phenol and COD removal
description In this study, four zeolites in H-form (HZSM-5, H-Beta, H-Mordenite, and H-USY) were tested at different operating conditions for removal of phenol and COD by ozonation. The process variables include concentration of phenol in solution, ozonated airflow rates, pH of solution, temperature, and reaction time. According to experimental results, combination of zeolite and ozone was able to remove both phenol and COD effectively compared to without ozone. Zeolite mainly acted as adsorbent, providing surface for reaction between ozone and phenol. However, the adsorption capacity of zeolites decreased at higher pH due to the formation of OH radicals, which diminished the surface reactions, but enhanced the bulk removal of phenol. Large flow rates of ozonated air and ambient temperature were suitable for removal of both phenol and COD. A maximum of 50.5% phenol was removed by HZSM-5(80) at 100 ppm of phenol concentration. HZSM-5(80) removed both phenol and COD effectively compared to other zeolites at all operating conditions except when phenol concentration was higher at which H-USY was a better catalyst.
format Article
author Saidina Amin, Nor Aishah
Akhtar, Javaid
Rai, H. K.
author_facet Saidina Amin, Nor Aishah
Akhtar, Javaid
Rai, H. K.
author_sort Saidina Amin, Nor Aishah
title Screening of combined zeolite-ozone system for phenol and COD removal
title_short Screening of combined zeolite-ozone system for phenol and COD removal
title_full Screening of combined zeolite-ozone system for phenol and COD removal
title_fullStr Screening of combined zeolite-ozone system for phenol and COD removal
title_full_unstemmed Screening of combined zeolite-ozone system for phenol and COD removal
title_sort screening of combined zeolite-ozone system for phenol and cod removal
publisher Elsevier B.V.
publishDate 2010
url http://eprints.utm.my/id/eprint/26580/
http://dx.doi.org/10.1016/j.cej.2010.01.042
_version_ 1643647800615895040
score 13.211869

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