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Experimental study on nanofiltration separation of high concentrated saline and sucrose solution

Authors： TANGYuanhui1, WANG Di1, YANG Zhonglin1, YAN Zhiqin2, YU Yi1

Units： 1. Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China; 2. Service Center of Societies of CAST, Beijing 100081, China;

KeyWords： Sucrose,chloride and sulfate, Separation, Nanofiltration,Wastewatertreatment

ClassificationCode：TQ028

year,volume(issue):pagination： 2018,38(4):86-92

Abstract：

In order to explore the possibility of using nanofiltration (NF) membrane to separate the high concentrated sugar and chloride, in this paper, a commercial NF membrane (named as NF270) was employed in the permeation of the high concentrated sucrose and the single or the binary salt solutions of NaCl and Na2SO4. Firstly, the influences of the parameters including the operating pressure and the solute concentration on the separation performance were investigated to determine basic permeation and the rejection performance of the NF270 membrane for the single solution. Then for high concentratedsucrose and salt solutions, the results have shown that the flux increased with the increase of operating pressure and decrease of salt concentration. In addition, an increase in the salt concentration generally decreased the rejection to the sucrose,while the sucrose has a slight effecton the rejection to the salts.On a higher operating pressure,an efficient selective separation of chloride and the sucrose could be achieved by a NF270 membrane.

Funds：

中国矿业大学（北京）2016年中央高校基本科研业务费青年教师科研专项（No. 8000151R），国家自然科学基金青年基金（No. 20141300604）

AuthorIntro：

[作者简介]唐元晖，1986年出生，女，甘肃省兰州市人，博士后，从事相转化法膜制备的研究工作；Email: tangyuanhui@126.com

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