Gold-recovery PVDF membrane functionalized with thiosemicarbazide

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	Gold-recovery PVDF membrane functionalized with thiosemicarbazide
	Li, Haigang 1,2; Wang, Xaiomin 1,2,3; Cao, Lixia 1,2; Zhang, Xuan 4; Yang, Chuanfang 1,2
刊名	CHEMICAL ENGINEERING JOURNAL
	2015-11-15
卷号	280 期号:NOV 页码:399-408
关键词	Functionalized membrane Gold recovery Thiosemicarbazide PVDF Breakthrough
ISSN号	1385-8947
英文摘要	Poly(vinylidene fluoride) resin functionalized with thiourea groups was made into porous membranes for trace amount of Au(III) recovery with high selectivity and efficiency. Thiosemicarbazide was grafted on the backbones of the resin by nucleophilic addition reaction first, membranes were then fabricated by non-solvent induced phase separation method. Membrane morphology was controlled by 2-stage coagulation such that an open porous structure was developed for high flux. Gold was recovered from aqueous solutions by filtration with a stack of such membranes prepared. The maximum gold uptake was 17.2 mg/g when the feed gold concentration was 2 mg/L. The breakthrough point of the membrane was not significantly influenced by pH and flow rate, indicating the tendency of easy process scaling up. Gold can even be selectively adsorbed by the membrane from a solution containing gold, 10 times concentrated copper and ferric irons. The separated gold can be easily eluted from the membrane with a solution containing 0.1 M thiourea and 1 M HCl. Furthermore, the membrane was shown to be able to recover gold from both industrial wastewater and tap water. And finally, the adsorption mechanism was studied based on X-ray photoelectron spectrophotometry analyses. (C) 2015 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	MIXED MATRIX MEMBRANES ; AQUEOUS-SOLUTIONS ; SPECTROPHOTOMETRIC DETERMINATION ; EFFICIENT ADSORPTION ; SELECTIVE RECOVERY ; COPPER ; WATER ; IONS ; CHROMATOGRAPHY ; PRECIPITATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000360949900045
公开日期	2015-12-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19540]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100190, Peoples R China 4.Chow Tai Fook Jewellery Cultural Ind Pk Wuhan Co, Dept High Tech Dev, Wuhan 430000, Peoples R China
推荐引用方式 GB/T 7714	Li, Haigang,Wang, Xaiomin,Cao, Lixia,et al. Gold-recovery PVDF membrane functionalized with thiosemicarbazide[J]. CHEMICAL ENGINEERING JOURNAL,2015,280(NOV):399-408.
APA	Li, Haigang,Wang, Xaiomin,Cao, Lixia,Zhang, Xuan,&Yang, Chuanfang.(2015).Gold-recovery PVDF membrane functionalized with thiosemicarbazide.CHEMICAL ENGINEERING JOURNAL,280(NOV),399-408.
MLA	Li, Haigang,et al."Gold-recovery PVDF membrane functionalized with thiosemicarbazide".CHEMICAL ENGINEERING JOURNAL 280.NOV(2015):399-408.