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Removal of trace multivalent metal ion from silver nitrate solution by nanofiltration

Authors： XIA Huanjin，LI Haigang，WANG Yangqing，YIN Hao，SUN Pan

Units： 1. Wuhan Institute of Marine Electric Propulsion, Wuhan 430064, PR China；2. Wuhan Great Sea High Technology Co,. Ltd., Wuhan 430223, PR China

KeyWords： Nanofiltration; Silver Nitrate; Industrial solution; Guarantee Reagent

ClassificationCode：TQ131.2+2

year,volume(issue):pagination： 2016,36(5):101-105

Abstract：

Silver nitrate aqueous solution was purified by nanofitration (NF) membrane to obtain the guarantee reagent. The effect of operation conditions on the separation efficiency was discussed. In recycling mode, the operating pressure is fixed at 0.5 MPa. The permeate rate of Ag+ is 96% and the rejection rate of multivalent metal ion is above 85%. The separation factor between Ag+ and Cu2+, Fe3+, Pb2+ and Bi3+ was 16.8, 48.3, 6.9 and 19.3, respectively. The permeate flux and separation factor are increased with the operating pressure increasing. In continuous mode, Ag+ is separated from multivalent metal ion with permeate rate of 87.6%, and the retention rate of multivalent ion is above 90%. The silver nitrate can meet guarantee reagent standard in GB/T670-2007. The results indicated that Ag+ can be effectively separated from multivalent metal ion, such as Cu2+, Fe3+, Pb2+ and Bi3+. The separation efficiency was not satisfied by only one NF pass when the feed water had high multivalent metal ion concentration such as crystallized mother liquor. NF was suggested to be conducted for more times in series to achieve high separation efficiency.

Funds：

国家自然科学基金青年科学基金（21506222）

AuthorIntro：

第一作者简介：夏焕锦（1973-），男，学士，武汉船用电力推进装置研究所，高级工程师，从事节能环保研究。＊通讯作者，Email：lihigang@163.com

Reference：

[1] 王吉华，普正昌，陈国安. 试剂硝酸银生产新工艺[J]. 化学试剂，1999，21（1）： 58-59.
[2] 张圣南，李仕雄. 高纯硝酸银的工业制备及生产过程控制[J]，湖南有色金属，2006，22（4）： 25-27.
[3] 蔡练兵. 高纯硝酸银制备研究与生产实践[D]：[学位论文]. 长沙：中南大学，2009. 7-10.
[4] 邱实，吴礼光，张林，等. 纳滤分离机理[J]. 水处理技术，2009，35（1）：15-19.
[5] 孙宝红，笪晓薇，范益群. 纳滤膜材质对高含盐体系中有机物截留性能的影响研究[J]. 膜科学与技术，2015，35（2）：14-19.
[6] Lefebvre X, Palmeri J. Nanofiltration theory: good co-ion exclusion approximation for single salts[J]. The Journal of Physical Chemistry B, 2005, 109(12): 5525-5540.
[7] Li H, Yu P, Luo Y. Fouling mechanisms and primary foulant constituents in reverse osmosis membrane reclamation of a petrochemical secondary effluent[J]. Desalination and Water Treatment, 2015, 54(12): 1-11.
[8] 李雁博，韦江，王存文，等. 不同纳滤膜对苯酚的截留效果及其影响因素研究[J]. 膜科学与技术，2010，30（6）：49-56.

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