Ultrafiltration membrane fouling induced by humic acid with typical inorganic salts

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

	Ultrafiltration membrane fouling induced by humic acid with typical inorganic salts
	Qu, Jiuhui; Liu, Huijuan; Yang, Min; Hu, Chengzhi; Li, Wenjiang; Ding, Yanyan; Ma, Baiwen
刊名	CHEMOSPHERE
	2018-04-01
卷号	197 页码:793-802
关键词	UF membrane Humic acid Typical inorganic salts Fouling mechanisms
ISSN号	0045-6535
文献子类	Article
英文摘要	Severe ultrafiltration (UF) membrane fouling is always induced by humic acid (HA). However, little attention has been paid to the influence of inorganic salts, and even the studies related have been limited to only a single kind of salt. In addition, the concentration of the inorganic salts reported in previous studies is much high. Herein, the effect of HA on UF membrane performance was investigated in the presence of typical inorganic salts, with concentrations similar to those in natural waters or actually used in most current water plants. The results showed that membrane performance was influenced little by monovalent inorganic salts (NaCl and KCl), while divalent inorganic salts (CaCl2 and MgCl2) could exacerbate the membrane fouling. For trivalent inorganic salts (AlCl3 center dot 6H(2)O and FeCl3 center dot 6H(2)O), floc adsorption was the dominant HA removing mechanism, and AlCl3 center dot 6H(2)O behaved better than FeCl3 center dot 6H(2)O. Relating to the floc properties, severe membrane fouling occurred with low dosage, while it was mitigated with high dosage. Compared with the trivalent inorganic salts, more severe membrane fouling was caused by divalent inorganic salts. Additionally, little synergistic or inhibitory effect occurred with mixtures of divalent inorganic salts and trivalent inorganic salts. Furthermore, analysis with the classical fouling models showed that cake filtration was the main fouling mechanism with/without inorganic salts. Based on the findings, we believe these different HA behaviors exhibited during coagulation process with inorganic salts will have a large potential application in UF membrane fouling alleviation in water treatment. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41432]
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	Qu, Jiuhui,Liu, Huijuan,Yang, Min,et al. Ultrafiltration membrane fouling induced by humic acid with typical inorganic salts[J]. CHEMOSPHERE,2018,197:793-802.
APA	Qu, Jiuhui.,Liu, Huijuan.,Yang, Min.,Hu, Chengzhi.,Li, Wenjiang.,...&Ma, Baiwen.(2018).Ultrafiltration membrane fouling induced by humic acid with typical inorganic salts.CHEMOSPHERE,197,793-802.
MLA	Qu, Jiuhui,et al."Ultrafiltration membrane fouling induced by humic acid with typical inorganic salts".CHEMOSPHERE 197(2018):793-802.