화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.34, No.5, 1393-1399, May, 2017
DOI10.1007/s11814-017-0033-1  Export Citation
Treatment of malachite green dye using combined oxidation techniques based on different irradiation
Vitthal Laxmanrao Gole1, 2, †, and Apurva Alhat1, 3
  • 1Department of Chemical Engineering, AISSMS College of Engineering, Kennedy Road, Pune - 411001, MS, India
  • 2Department of Material Science and Engineering, The University of Arizona, P. O. Box 210012, Tucson, Arizona, U.S.A., India
  • 3, India
E-mail:
We investigated the treatment of malachite green (MG) dye using sonocatalytic, photocatalytic and sonophotocatalytic techniques. The percentage of decolorization for sonophotolysis (65.5±3.3%) was much higher than the individual effects of sonolysis (55.2±2.4%) and photolysis (52.1±2.6%). The efficiency of the sonophotocatalytic process increased in the presence of photocatalysts such as anatase TiO2 (82.2±4.1%) and ZnO (75.7±3.8%). The decolorization rate further enhanced in the presence of nano-TiO2 (anatase, rutile ratio 75 : 25 and particle size ≤100 nm). The enhancement in decolorization was marginal for sonophotocatalysis (95.9±4.8%) as compared to sonocatalysis (93.0±4.3%) and photocatalysis (93.2±4.6%). The intensification of decolorization in the presence of nano-TiO2, due to lower recombination of hydroxyl ions on the photocatalytic surface and nano-particle size of a catalyst, increased cavitational activity. The total organic carbon was found to be maximum for sonophotocatalytic in the presence of nano-TiO2 (67.1±3.3%).
Keywords:Degradation MG;Advanced Oxidation;Sonocatalysis;Photocatalysis;Sonophotocatalysis;Mineralization
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