标题：Removal of Chromium from Electroplating Wastewater by Aminated Polyacrylonitrile Fibers
作者：Wang, Jing; Lv, Xiang-Hua; Zhao, Liang; Li, Jing-Ping
作者机构：[Wang, Jing; Zhao, Liang] Henan Acad Sci, Inst Chem, Zhengzhou 450002, Peoples R China.; [Lv, Xiang-Hua] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzh 更多
通讯作者地址：[Zhao, L]Henan Acad Sci, Inst Chem, Zhengzhou 450002, Peoples R China.
来源：ENVIRONMENTAL ENGINEERING SCIENCE
关键词：chromium removal; electroplating wastewater; aminated polyacrylonitrile; fiber; column test
摘要：Batch and column studies were conducted to evaluate the performance of a novel aminated polyacrylonitrile (TE-PAN) fiber for total chromium removal from electroplating wastewater. Results from batch sorption studies showed that sorption equilibrium of chromium on TE-PAN was achieved within about 10 min. Temperature had no significant effect on sorption isotherms and estimated maximum uptake of total chromium was 133 mg/g. TE-PAN exhibited high removal efficiency over a wide pH range (2-7). Column studies demonstrated that exhausted TE-PAN fibers could be completely regenerated by 0.1M NaOH for repeated sorption of chromium after as many as 15 sorption-regeneration cycles. FTIR and SEM analyses further validated the efficiency and stability of TE-PAN for chromium removal. Findings of this study have significant practical applications for treatment of chromium contaminated waters.