在内循环淤浆鼓泡塔反应器中通过光催化降解三氯乙烯。
Degradation of trichloroethylene by photocatalysis in an internally circulating slurry bubble column reactor.
作者信息
Jeon Jin Hee, Kim Sang Done, Lim Tak Hyoung, Lee Dong Hyun
机构信息
Department of Chemical and Biomolecular Engineering, Energy and Environment Research Center, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, South Korea.
出版信息
Chemosphere. 2005 Aug;60(8):1162-8. doi: 10.1016/j.chemosphere.2004.12.058. Epub 2005 Apr 12.
The effects of initial trichloroethylene (TCE) concentration, recirculating liquid flow rate and gas velocity on photodegradation of TCE have been determined in an internally circulating slurry bubble column reactor (0.15m-ID x 0.85 m-high). Titanium dioxide (TiO2) powder was employed as a photocatalyst and the optimum loading of TiO2 in the present system is found to be approximately 0.2 wt%. The stripping fraction of TCE by air flow increases but photodegradation fraction of TCE decreases with increasing the initial TCE concentration, recirculating liquid flow rate and gas velocity. The average removal efficiency of TCE is found to be approximately 97% in an internally circulating slurry bubble column reactor.
在一个内径0.15米、高0.85米的内循环淤浆鼓泡塔反应器中，测定了初始三氯乙烯（TCE）浓度、循环液流速和气体流速对TCE光降解的影响。采用二氧化钛（TiO₂）粉末作为光催化剂，发现本体系中TiO₂的最佳负载量约为0.2 wt%。随着初始TCE浓度、循环液流速和气体流速的增加，气流对TCE的汽提分数增加，但TCE的光降解分数降低。在内循环淤浆鼓泡塔反应器中，TCE的平均去除效率约为97%。
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