膜科学与技术

Position：Home >> Abstract

Study on separation of Cr(Ⅵ) from drinking water by anion-exchange membrane

Authors： CHEN Shiyang，SHI Zhou*，LI Xuerui，Deng Lin

Units： College of Civil Engineering, Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Hunan University, Changsha 410082, China )

KeyWords： Donnan dialysis；ion transfer；anion-exchange membrane；separation efficiency

ClassificationCode：X505

year,volume(issue):pagination： 2014,34(1):96-100

Abstract：

The separation of Cr(Ⅵ) from drinking water by anion-exchange membrane was investigated without supplying electrical potential based on Donnan dialysis principle. The results show that the separation efficiency of Cr(Ⅵ) by anion-exchange membrane can achieve 86.4% under the conditions of influent Cr(Ⅵ) of 1.0 mg/L ( 0.0192 mmol/L ), initial pH of the feed solution of 6.95, NaCl concentration of 0.1 mol/L in the counterion solution, flow rate of the feed and counterion solution of 2.5 mL/min, stirring speed of 500 r/min, and phase temperature of 25℃. Using Na2SO4 solution as the counterion solution, the separation efficiency of Cr(Ⅵ) reduces. Adjusting initial pH of the feed solution to 11.0, the separation efficiency of Cr(Ⅵ) by anion-exchange membrane decreases to 78.9%. Increasing stirring speed of the two solutions beside the membrane, Cr(Ⅵ) in the feed chamber is more easily transferred to the receiver chamber through anion-exchange membrane. When phase temperature increases from 10℃ to 40℃, the residual Cr(Ⅵ) concentration in the feed chamber decreases from 0.21 mg/L to 0.12 mg/L.

Funds：

国家自然科学基金（50778065）

AuthorIntro：

陈世洋（1984—），男，江苏泰州市人，博士生，从事水质净化与水污染控制研究。* 通讯联系人

Reference：

[1]陆少鸣, 陶光华, 王健. 饮用水原水突发性铬污染的应急处理研究[J]. 中国给水排水, 2010, 26(11): 136-138.
[2]何仕均, 赵璇, 叶裕才, 等. 利用弱碱阴离子交换树脂去除饮用水源中微量铬(Ⅵ)[J]. 清华大学学报(自然科学版), 2002, 42(5): 662-664.
[3]Tor A, Buyukerkek T, Cengeloglu Y, et al. Simultaneous recovery of Cr(Ⅲ) and Cr(Ⅵ) from the aqueous phase with ion-exchange membranes[J]. Desalination, 2005, 171(3): 233-241.
[4]徐铜文. 扩散渗析法回收工业酸性废液的研究进展[J]. 水处理技术, 2004, 30(2): 63-66.
[5]Hichour M, Persin F, Molenat J, et al. Fluoride removal from diluted solutions by Donnan dialysis with anion-exchange membranes[J]. Desalination, 1999, 122(1): 53-62.
[6]Krishna B S, Murty D S R, Prakash B S. Surfactant- modified clay as adsorbent for chromate[J]. Applied Clay Science, 2001, 20(1-2): 65-71.
[7]徐佩立. 边界层及其在传递过程中的应用[M]. 北京: 高等教育出版社, 1988, 26-32.
[8]Fonseca A D, Crespo J G, Almeida J S, et al. Drinking water denitrification using a novel ion-exchange membrane bioreactor[J]. Environmental Science & Technology, 2000, 34(8): 1557-1562.

Service：

【Download】【Collect】

《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com