Hydraulic power and electric field combined antifouling effect of a novel conductive poly(aminoanthraquinone)/reduced graphene oxide nanohybrid blended PVDF ultrafiltration membrane
Hydraulic power and electric field combined antifouling effect of a novel conductive poly(aminoanthraquinone)/reduced graphene oxide nanohybrid blended PVDF ultrafiltration membrane
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新型导电聚氨基蒽醌/还原氧化石墨烯纳米杂化PVDF超滤膜的水力与电场联合防污效果
DOI：
10.1039/c5ta05306d
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发表时间：
2015-10
影响因子：
11.9
通讯作者：
Yang Fenglin
中科院分区：
文献类型：
--
作者：
Liu Haiyan;Zhang Guoquan;Zhao Chuanqi;Liu Jiadong;Yang Fenglin
Membrane fouling is still a bottleneck problem towards the wide-spread applications of membrane bioreactors (MBRs) for wastewater treatment/reclamation. Thus, membrane modification has ever been a hot topic for improving the separation efficiency and antifouling ability of membranes. In this study, a novel conductive and hydrophilic poly(1,5-diaminoanthraquinone)/reduced graphene oxide (PDAAQ/rGO) nanohybrid blended polyvinylidene fluoride (PVDF) membrane was prepared by the phase inversion method. The fabricated PDAAQ/rGO/PVDF membrane was characterized by different characterization techniques. The effect of additive content on the membrane structure and antifouling performance was evaluated. An obvious growth in pore size/porosity and surface roughness was observed for the 1.5 wt% PDAAQ/rGO nanohybrid blended membrane, which caused higher hydrophilicity, pure water flux and fouling resistance than those of the pristine PVDF membrane. By applying an appropriate external electric field of 1.0 V cm−1, the conductive PDAAQ/rGO nanohybrid blended PVDF membrane exhibited an admirable electrocatalytic activity towards the oxygen reduction reaction, and 8.84 mg L−1 H2O2 was accumulated within 30 min electrolysis. Meanwhile, the conductive PDAAQ/rGO/PVDF membrane displayed superior fouling removal ability along with a higher water flux recovery ratio after electric cleaning. Applying bovine serum albumin as the model protein and 1.0 V cm−1 external electric field, the fouling rate of the conductive PDAAQ/rGO/PVDF membrane decreased by about 63.5% when compared with the control test during the long-term continuous-flow membrane filtration process. The cross-flow shear stress induced by aeration scouring, the increased electrostatic repulsion force induced by the external electric field and the in situ electro-generated H2O2 contributed to the prominent fouling mitigation and fouling resistance.
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影响因子：
9.5
作者：
Liang, Shuai;Xiao, Kang;Huang, Xia
通讯作者：
Huang, Xia
影响因子：
9.5
作者：
Hashino, Masatoshi;Hirami, Keisuke;Matsuyama, Hideto
通讯作者：
Matsuyama, Hideto
影响因子：
9.5
作者：
Hao Wu;J. Mansouri;V. Chen
通讯作者：
Hao Wu;J. Mansouri;V. Chen
通过原子转移自由基接枝聚合掺入 PVDF-g-PHEMA 添加剂的防污 PVDF 超滤膜
影响因子：
9.5
作者：
Sui, Yan;Wang, Zhining;Gao, Congjie
通讯作者：
Gao, Congjie
影响因子：
4.6
作者：
Huang J;Wang Z;Zhang J;Zhang X;Ma J;Wu Z
通讯作者：
Wu Z