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论文类型： 期刊论文

发表时间： 2014-04-01

发表刊物： DESALINATION

收录刊物： SCIE、EI、Scopus

卷号： 338

期号： 1

页面范围： 10-16

ISSN号： 0011-9164

关键字： Conductive polymer composites; Cathodic membrane; Membrane fouling suppression; Graphene

摘要： A novel membrane modification strategy for controlling fouling in filter membrane was presented. In this paper, electrically conductive membranes were prepared by coating graphene (Gr) and polyaniline (PANi) doped with phytic acid (PA) on polyester filter cloth. The Gr/PANi-PA modified membrane had a good conductivity and an excellent antifouling property, its electric resistance was 93% lower than the PANi-HA (doped with hydrochloric acid) modified membrane and 13% lower than the PANi-PA modified membrane. The antifouling performances of the modified conductive membranes were compared in EMBR (MBR, membrane bioreactor attached with a 0.2 V/cm electric field), tested by a short time filtration of a yeast suspension solution. The result indicated that the membrane with a higher conductivity had better antifouling property, smaller slopes in its t/V-V curves (adopting the classical cake filtration model, a suitable description for the membrane fouling process). The short-term cumulative permeate volume from the Gr/PANi-PA modified membrane was increased by -58% after applying 0.2 V/cm electric field, while it was only similar to 10% for PANi-PA modified membrane. (C) 2014 Elsevier B.V. All rights reserved.