Photocatalysis and Rotating Dynamic Membrane Hybrid System with Fe-ZnIn₂S₄ Efficiently Removes 2,4,6-Tribromophenol in Water: Effect of Dynamic Membrane

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• 作者：Bo Gao ; Lifen Liu ; ^{yuzhe25521@yahoo.com.cn} ; Jiadong Liu ; Fenglin Yang
• 关键词：Photocatalytic membrane reactor ; Dynamic membrane ; NanoCaCO3 ; Graphene oxide
• 刊名：Procedia Environmental Sciences
• 出版年：2013
• 出版时间：2013
• 年：2013
• 卷：18
• 期：Complete
• 页码：509-514
• 全文大小：555 K

文摘

A photo-catalysis and dynamic membrane reactor system (PMR), with coated dynamic layer on polypropylene non- woven fabric material, was studied for continuous photocatalysis and retention of catalysts in a single device, in removing halogenated compound 2,4,6-Tribromophenol in water. Different dynamic layer materials such as graphite oxide, graphene oxide and nonoCaCO3 were applied to evaluate the efficiency in removing COD, 2,4,6- Tribromophenol and in debromination. The pre-coated dynamic membrane can significantly enhance the filtration performance and improve the debromination efficiency. The PMR system with dynamic layer and Fe-ZnIn2S4 photocatalyst completely removed 2,4,6-Tribromophenol when the retention time maintained 2.0 h in the continuous mode. The hybrid system achieved 58 % , 74 % and 85 % debromination when the dynamic layer materials were graphite oxide, graphene oxide and nanoCaCO₃, respectively. And, the COD removal efficiencies were in the order of nanoCaCO₃ (72 % ) > graphite oxide (51 % ) > graphene oxide (42 % ). NanoCaCO₃ was found able to assist and improve debromination efficiency during UV irradiated photolysis. The combination of dynamic membrane and photocatalysis provides a new alternative for practical application of photocatalysis.