Indexed by:会议论文

Date of Publication:2013-01-01

Included Journals:CPCI-S、SCIE

Volume:18

Page Number:509-514

Key Words:Photocatalytic membrane reactor; Dynamic membrane; NanoCaCO(3); Graphene oxide

Abstract: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 nonoCaCO(3) 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 nanoCaCO(3), respectively. And, the COD removal efficiencies were in the order of nanoCaCO(3) (72%)> graphite oxide (51%)> graphene oxide (42%). NanoCaCO(3) 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. (C) 2013 The Authors. Published by Elsevier B.V.