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纳滤膜去除水中微量药物萘普生效能的影响因素研究

作者：葛四杰，吴芳，张立秋，封莉

单位：北京林业大学，北京市水体污染源控制技术重点实验室

关键词：纳滤；萘普生；pH；离子强度；操作压力

DOI号：

分类号： TQ319；X52

出版年,卷(期):页码： 2013,33(6):92-96

摘要：

以水体中经常暴露的消炎镇痛类药物萘普生(NAP)为研究对象，考察了溶液pH、离子强度(以Ca2+浓度表示)、共存腐殖酸浓度、操作压力和温度对纳滤膜去除NAP效能的影响。试验发现：溶液pH值、离子强度或腐殖酸浓度的增加均提高了纳滤膜对NAP的去除率，操作压力的增加则使NAP的去除率有所降低，当溶液温度在16.5~36.5 ℃范围内变化时未对NAP的去除率产生明显影响。在所有试验条件下，纳滤膜对NAP的去除率介于83.9%~96.2%之间，说明纳滤膜分离工艺是去除饮用水中微量NAP的一种有效方法，分析认为静电排斥和筛分作用是纳滤膜去除NAP的主要机制。

Naproxen, an anti-inflammatory analgesic and detected frequently in aquatic environment, was conducted as a target compound in this study. The effects of different influencing factors including solution pH, ionic strength, humic acid concentration, operating pressure and temperature on the removal of naproxen by nanofiltration membrane separation were investigated in detail. The research results showed that the removal efficiency of naproxen was improved with the increase of solution pH, ionic strength and humic acid concentration. However, the removal efficiency of naproxen decreased with the increasing of operating pressure. The variations of temperature in the range of 16.5 to 36.5℃ did not affect the removal efficiency of naproxen. Under all the experimental conditions, the removal efficiency of naproxen varied from 83.9% to 96.2%, which demonstrated that nanofiltration membrane separation is an effective method for the removal of trace naproxen from drinking water. Electrostatic repulsion and steric exclusion were supposed as the dominant mechanisms for the retention removal of naproxen by nanofiltration membrane separation.

基金项目：

国家自然科学基金项目(51178046)

作者简介：

葛四杰(1989-)，男，安徽宿州人，硕士研究生，E-mail:ge_sijie@126.com。主要研究方向为环境污染控制理论与技术 *通讯作者：封莉，女，副教授，硕士生导师，E-mail:fengli_hit@163.com，北京市海淀区清华东路35号北京林业大学环境科学与工程学院主楼227室，100083；

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