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Removal of strontium from simulated radioactive wastewater by nanofiltration

Authors： CHEN Lifang, LU Xiaofeng, BIAN Xiaokai, PAN Ling, HOU Zhengchi, SHEN Liguo

Units： Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800

KeyWords： Nanofiltration; Radioactive wastewater; Sr2+

ClassificationCode：TQ 028.8

year,volume(issue):pagination： 2014,34(5):44-48

Abstract：

The performance of nanofiltration(NF) for treatment of strontium-containing radioactive wastewater was investigated using XN45 NF membrane. The effects of the initial strontium concentration, solution pH, ionic strength and complexation phenomena on strontium removal were described. The results indicated that the strontium rejection increased with decreasing initial strontium concentration and ionic strength. In addition, an increase in the solution pH reduced strontium rejection until pH = 5, at which point a further increase in pH increased strontium rejection. In the presence of a complexing agent (PAA or EDTA-2Na), the strontium rejection was generally higher than those obtained without a complexing agent. The strontium rejection reached over 98% under the conditions that [PAA]/[Sr] = 5, pH was greater than 7 or [EDTA-2Na]/[Sr] = 4, pH = 9.

Funds：

上海市科技攻关项目（08231200300）

AuthorIntro：

陈利芳（1987-），女，江苏人，博士研究生，从事滤膜改性及应用方面的研究，

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