Removal of active dyes by ultrafiltration membrane pre-deposited with a PSFM coagulant: Performance and mechanism

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	Removal of active dyes by ultrafiltration membrane pre-deposited with a PSFM coagulant: Performance and mechanism
	Tang, Lipeng ; Xiao, Feng ; Wei, Qunshan ; Liu, Yanbiao ; Zou, Yubin ; Liu, Jianshe ; Sand, Wolfgang ; Chow, Christopher
刊名	CHEMOSPHERE
	2019-05
卷号	223 页码:204-210
关键词	Polysilicate ferric manganese UF membrane Pre-deposition Active dye Membrane fouling
ISSN号	0045-6535
英文摘要	A new, environmental friendly, polysilicate ferric manganese (PSFM) coagulant, composed of Fe, Mn and Si, was designed and developed. As part of the process, the PSFM flocs were then deposited onto an ultrafiltration (UF) membrane to increase the removal of active dyes and its antifouling properties in the presence of the active dye was tested. Influencing factors, such as dosage of coagulant and solution pH, were systematically investigated and included as the process optimization. The results show that PSFM flocs were well distributed on the membrane surface and a dense and homogeneous deposition layer was formed under optimal conditions. According to the characterization of PSFM floc by Fourier infrared (FTIR) and X-ray photoelectron spectroscopy (XPS), the major phase of PSFM floc is determined to be MnxFeySizOw(OH)(i) and the functional groups of this component contribute positively to the coagulation performance. The removal rate of the active yellow dye reached 86% at pH 5.0 with small and regular floc formed in the dense deposition layers. At pH 11.0 loose deposition layers were formed by large flocs and the removal of the active yellow dye reduce to 11%. Therefore, PSFM has a commendable potential to be used for producing a kind of deposited UF membrane with an excellent performance by controlling the forms of flocs and the deposition layers, which is the key mechanism to achieve a high efficiency for removal of active yellow dye. (C) 2019 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43113]
专题	生态环境研究中心_环境水质学国家重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China 3.Univ South Australia, Sch Environm Sci & Engn, Adelaide, SA 2280, Australia 4.North China Elect Power Univ, Sch Renewable Energy, Beijing 102206, Peoples R China 5.Minist Environm Protect, Text Pollut Controlling Engn Ctr, Shanghai 201620, Peoples R China
推荐引用方式 GB/T 7714	Tang, Lipeng,Xiao, Feng,Wei, Qunshan,et al. Removal of active dyes by ultrafiltration membrane pre-deposited with a PSFM coagulant: Performance and mechanism[J]. CHEMOSPHERE,2019,223:204-210.
APA	Tang, Lipeng.,Xiao, Feng.,Wei, Qunshan.,Liu, Yanbiao.,Zou, Yubin.,...&Chow, Christopher.(2019).Removal of active dyes by ultrafiltration membrane pre-deposited with a PSFM coagulant: Performance and mechanism.CHEMOSPHERE,223,204-210.
MLA	Tang, Lipeng,et al."Removal of active dyes by ultrafiltration membrane pre-deposited with a PSFM coagulant: Performance and mechanism".CHEMOSPHERE 223(2019):204-210.