膜科学与技术

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Effect of nanofiltration membrane materials on the retention properties of organics in high salinity system

Authors： Sun Baohong, Da Xiaowei, Fan Yiqun

Units： State Key Laboratory of Materials - Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China

KeyWords： nanofiltration; high salinity system; retention properties

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2015,35(2):14-19

Abstract：

In order to obtain the law of nanofiltration membrane materials influence on the organic retention in high salinity system, the retention of organics was investigated by organic nanofiltration membrane and ceramic nanofiltration membrane with similar molecular weight cut-off(MWCO). The effects of running time, salt concentration, transmembrane pressure(TMP), organic concentration on retention of organics were discussed. The results indicated that the membrane retention properties could achieve stability after 30 minutes. The permeate flux and retention properties of organics gradually reduced with the increase of salt concentration, and retention properties of ceramic membrane was better than that of organic membrane. The organic concentration and TMP had a weak effect on retention properties of the membranes. Therefore, ceramic nanofiltration membrane has higher permeate flux and organic retention in high salinity system compared to organic nanofiltration membrane.

Funds：

国家“863”计划课题(2012AA03A606)、教育部创新团队发展计划（IRT13070）、江苏省高校自然科学研究项目(12KJA530001)

AuthorIntro：

孙宝红(1989-),女,安徽滁州市人,硕士,研究方向为膜分离.

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