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Gold-recovery PVDF membrane functionalized with thiosemicarbazide
Li, Haigang1,2; Wang, Xaiomin1,2,3; Cao, Lixia1,2; Zhang, Xuan4; Yang, Chuanfang1,2
2015-11-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume280Issue:NOVPages:399-408
AbstractPoly(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.
KeywordFunctionalized Membrane Gold Recovery Thiosemicarbazide Pvdf Breakthrough
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cej.2015.06.021
Indexed BySCI
Language英语
WOS KeywordMIXED MATRIX MEMBRANES ; AQUEOUS-SOLUTIONS ; SPECTROPHOTOMETRIC DETERMINATION ; EFFICIENT ADSORPTION ; SELECTIVE RECOVERY ; COPPER ; WATER ; IONS ; CHROMATOGRAPHY ; PRECIPITATION
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000360949900045
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19540
Collection生化工程国家重点实验室
Affiliation1.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
Recommended Citation
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.
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