Collin Glen Joseph Anthony Joseph and Liew, Sharain Yen Ling and Krishnaiah, Duduku and Awang Bono (2012) Application of a semiconductor oxide-based catalyst in heterogeneous wastewater treatment: A green technology approach. Journal of Applied Sciences, 12 (18). pp. 1966-1971. ISSN 1812-5654
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Application of a Semiconductor Oxide-Based Catalyst in Heterogeneous Wastewater Treatment A Green Technology Approach.pdf Download (486kB) | Preview |
Abstract
The use of chlorine bleaching in study and pulp industry has resulted in chlorinated phenol contaminated wastewater from that industry. A new wastewater treatment process, sonophotodegradation of 2,4,6-trichlorophenol (TCP) in a heterogeneous aqueous system was investigated and reported in this study. TCP was degraded with ultrasonic or ultraviolet irradiation or a combination of both, in the presence of titanium dioxide semiconductor catalyst (anatase and/or rutile), in order to study the effectiveness of sonocatalysis, photocatalysis and sonophotocatalysis oxidation in a batch sonophotoreactor system. Preliminary studies presented in this study suggested that rutile worked well under sonocatalysis, anatase was the preference for photocatalysis and sonophotocatalysis benefited from a combined rutile and anatase mixture catalyst. Sonophotocatalysis oxidation of TCP demonstrated a degradation that was higher than sonocatalysis or photocatalysis individually while the first-order kinetics rate constants indicated that sonophotocatalysis degradation of TCP was synergistic with a positive value of 0.0203 in the presence of the mixture catalyst.
| Item Type: | Article |
|---|---|
| Keyword: | Anatase, Chlorophenol, Photocatalysis, Rutile, Sonocatalysis, Sonophotocatalysis, Sonophotodegradation, Chlorophenols, Rutile, Sonocatalysis, Sonophotocatalysis, Sonophotodegradation, Catalysts, Chlorine, Degradation, Oxide minerals, Phenols, Photocatalysis, Rate constants, Titanium dioxide |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD1-1066 Environmental technology. Sanitary engineering > TD201-500 Water supply for domestic and industrial purposes > TD429.5-480.7 Water purification. Water treatment and conditioning. Saline water conversion |
| Department: | SCHOOL > School of Science and Technology |
| Depositing User: | ADMIN ADMIN |
| Date Deposited: | 12 Nov 2012 17:12 |
| Last Modified: | 30 Dec 2020 09:18 |
| URI: | https://eprints.ums.edu.my/id/eprint/5100 |
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