A comparison study of in-situ coagulation and magnetic ion exchange (MIEX) as pre-treatments for ultrafiltration: Evaluating effectiveness of organic matters removals and fouling mitigation

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

	A comparison study of in-situ coagulation and magnetic ion exchange (MIEX) as pre-treatments for ultrafiltration: Evaluating effectiveness of organic matters removals and fouling mitigation
	Xu, Weiying ; Chen, Yingying ; Liang, Huikai ; Sang, Guoqing ; Wei, Dong ; Wang, Dongsheng ; Du, Bin
刊名	CHEMOSPHERE
	2019
卷号	214 页码:633-641
关键词	Organic matter Coagulation MIEX Membrane fouling Floc characteristics
ISSN号	0045-6535
英文摘要	This work was designed to compare the effectiveness of in-situ coagulation and MIEX as pre-treatments prior to ultrafiltration (UF) to improve organic matter (OM) removal and mitigate membrane fouling. Three kinds of OMs, i.e. salicylic acid (SA), humic acid (HA) and bovine serum albumin (BSA) were employed. The experimental results show that coagulation-UF led to most effective removal of HA (almost 90%), while the SA was uncoagulated and least removable, with the rejection rate of about 55%. Conversely, MIEX present superior ability for removing SA, contributing to additional efficiency of 71.95-77.21% than UF alone. Proper dosage of Al-based coagulants could alleviate flux loss, especially in the cases of HA and BSA. Increasing coagulant dose resulted in continuous decrement of irreversible resistance (R-ir), which dominated the membrane fouling development by the SA water. For HA and BSA waters, alternatively, variations of R-r determined the flux declines. Floc compact degree was the decisive factor for R-r for coagulated SA; while for HA and BSA, R-r, was most related to the floc size and foulant-foulant interaction. MIEX was most effective for alleviating flux loss when treating the hydrophilic SA with small molecules and for all the cases, MIEX exerted little influence on the R-r values. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43415]
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
作者单位	1.Univ Jinan, Sch Chem & Chem Engn, Key Lab Interfacial React & Sensing Anal Univ Sha, Jinan 250022, Shandong, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, 18 Shuangqing Rd, Beijing 100085, Peoples R China 3.Univ Jinan, Sch Water Conservancy & Environm, 336 Nanxinzhuang Western Rd, Jinan 250022, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Xu, Weiying,Chen, Yingying,Liang, Huikai,et al. A comparison study of in-situ coagulation and magnetic ion exchange (MIEX) as pre-treatments for ultrafiltration: Evaluating effectiveness of organic matters removals and fouling mitigation[J]. CHEMOSPHERE,2019,214:633-641.
APA	Xu, Weiying.,Chen, Yingying.,Liang, Huikai.,Sang, Guoqing.,Wei, Dong.,...&Du, Bin.(2019).A comparison study of in-situ coagulation and magnetic ion exchange (MIEX) as pre-treatments for ultrafiltration: Evaluating effectiveness of organic matters removals and fouling mitigation.CHEMOSPHERE,214,633-641.
MLA	Xu, Weiying,et al."A comparison study of in-situ coagulation and magnetic ion exchange (MIEX) as pre-treatments for ultrafiltration: Evaluating effectiveness of organic matters removals and fouling mitigation".CHEMOSPHERE 214(2019):633-641.