Insight into the effect of in-situ galvanic micro-coagulation on membrane fouling mitigation treating surface water

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Insight into the effect of in-situ galvanic micro-coagulation on membrane fouling mitigation treating surface water
	Xu, Lei; Wei, Chaocheng; Siddique, Muhammad Saboor; Yu, Wenzheng
刊名	JOURNAL OF MEMBRANE SCIENCE
	2020-09-01
卷号	610 页码:1-11
关键词	Galvanic micro-coagulation Ultrafiltration Membrane fouling Biopolymers Biofilm microstructure
ISSN号	0376-7388
英文摘要	Membrane fouling is an inevitable drawback of the membrane based long-term operations. In this study, we investigated a spontaneous galvanic process for membrane fouling mitigation, which termed as the in-situ galvanic micro-coagulation (GMC) process. Results demonstrated that the GMC contributed to a lower trans -membrane pressure development in contrast with the control system (7.15 vs 14.11 KPa/LMH/cP for about 1200 h operation). Significantly, a reduced concentration of extracellular polymeric substances (EPS) in terms of polysaccharides and proteins was observed for the GMC system on both the membrane surface and membrane pores, in comparison with the control system i.e. (134.09 +/- 7.37 vs 379.55 +/- 9.64 mu g/cm(2) of polysaccharides and 27.48 +/- 2.48 vs 35.87 +/- 3.53 mu g/cm(2) of proteins) and (70.46 +/- 1.93 vs 120.46 +/- 3.21 mu g/cm(2) of polysaccharides and 17.96 +/- 1.39 vs 20.52 +/- 2.12 mu g/cm(2) of proteins) respectively. Additionally, higher accumulation of EPS on the membrane surface of control system results in higher roughness of biofilm, lower porosity, robust and thicker biopolymer microstructure as compared to the GMC system. This kind of morphology and biofilm structure formed on the membrane surface of control system directly contributed to the higher transmembrane pressure. Overall, this work shows a potentially feasible and promising approach for membrane fouling mitigation, especially for the decentralized system with relatively low permeate flux.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45316]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Xu, Lei,Wei, Chaocheng,Siddique, Muhammad Saboor,et al. Insight into the effect of in-situ galvanic micro-coagulation on membrane fouling mitigation treating surface water[J]. JOURNAL OF MEMBRANE SCIENCE,2020,610:1-11.
APA	Xu, Lei,Wei, Chaocheng,Siddique, Muhammad Saboor,&Yu, Wenzheng.(2020).Insight into the effect of in-situ galvanic micro-coagulation on membrane fouling mitigation treating surface water.JOURNAL OF MEMBRANE SCIENCE,610,1-11.
MLA	Xu, Lei,et al."Insight into the effect of in-situ galvanic micro-coagulation on membrane fouling mitigation treating surface water".JOURNAL OF MEMBRANE SCIENCE 610(2020):1-11.