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Comparative Sonophotocatalysis and Photocatalysis for Chloroform Degradation  

Park, Jae-Hong (Research Institute for Environmental Technology and Sustainable Development, Korea University)
Cho, Il-Hyoung (New Town Development Division, Gyeonggi Innovation Corporation)
Publication Information
Journal of Korean Society on Water Environment / v.21, no.3, 2005 , pp. 263-266 More about this Journal
Abstract
Comparison between photocatalysis (UV+$TiO_2$) and sonophotocatalysis (Sonication+UV+$TiO_2$) were performed in lab-scale experiments for the treatment of chloroform. The effect of operational parameters, i.e., initial chloroform concentration, $TiO_2$ concentration, UV light intensity and sonication time on the degradation rate of aqueous solution of chloroform has been examined. The optimal conditions for photocatalysis and sonophotocatalysis processes were determined: initial chloroform concentration was 25 mg/L, the concentration of $TiO_2$ was 200 mg/L and UV light intensity was $6.630 mW/cm^2$, respectively. The optimal sonication time on sonophotocatalysis process was 90 min. Under the optimal conditions, sonophotocatalysis was effective for inducing faster degradation of the chloroform.
Keywords
Sonophotocatalysis; Photocatalysis; Chloroform;
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