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Journal of Applied Sciences
  Year: 2012 | Volume: 12 | Issue: 18 | Page No.: 1966-1971
DOI: 10.3923/jas.2012.1966.1971
 
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Application of a Semiconductor Oxide-Based Catalyst in Heterogeneous Wastewater Treatment: A Green Technology Approach
C.G. Joseph, Y.L.S. Liew, D. Krishnaiah and A. Bono

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.
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How to cite this article:

C.G. Joseph, Y.L.S. Liew, D. Krishnaiah and A. Bono, 2012. Application of a Semiconductor Oxide-Based Catalyst in Heterogeneous Wastewater Treatment: A Green Technology Approach. Journal of Applied Sciences, 12: 1966-1971.

DOI: 10.3923/jas.2012.1966.1971

URL: https://scialert.net/abstract/?doi=jas.2012.1966.1971

 
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