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	电解质溶液体系中压力驱动膜过程跨膜电位的实验研究
	王弘历 ; 尚伟娟 ; 涂丛慧 ; 王晓琳 ; WANG Hong-li ; SHANG Wei-juan ; TU Cong-hui ; WANG Xiao-lin
	2010-06-10 ; 2010-06-10
关键词	跨膜电位 流动电位 膜电位 反射系数 transmembrane potential streaming potential membrane potential maximum rejection TQ028.8
其他题名	Experimental Investigation of Transmembrane Potential of Pressure-Dressed Membrane Process in Electrolyte Solutions
中文摘要	在荷电膜性能的研究中,电解质溶液体系内的膜分离性能及跨膜电位测量是常用的方法。其中纳滤膜的跨膜电位研究中,由于存在膜两侧溶液浓度差和外加压差两种推动力,使得跨膜电位的解析存在一定困难。为解决上述问题,通过实验测定了一种纳滤膜(LES90)在四种电解质(KCl,Na2SO4,MgCl2,MgSO4)水溶液中的跨膜电位,结合膜分离性能(透过液通量,截留率)实验,从跨膜电位中分离出流动电位与膜电位。实验结果表明,对于本研究的四种类型电解质与LES90纳滤膜,随着溶液浓度升高以及阴、阳离子价态的增加,跨膜电位值均呈现降低趋势;本研究所建立的分析方法可以成功从跨膜电位中分离出流动电位与膜电位,从而为进一步通过理论方法解析跨膜电位提供了基础。; Transmembrane potential and separation performance in electrolyte solutions are widely used to characterize the properties of charged porous membranes. In the study of transmembrane potential across nanofiltration (NF) membranes,the existence of two driving forces of concentration difference and pressure difference on both sides of the membrane leads to the complexity of transmembrane potential data analysis. Based on the above issues,the transmembrane potential of a typical NF membrane (LES 90) in four electrolyte solutions (KCl,Na2SO4,MgCl2,MgSO4) was studied by experiments,and the corresponding analysis for the separation of streaming potential (SP) and membrane potential (MP) was also conducted by combining analysis with the separation experiments. It shows that,as for the four electrolytes and LES 90 NF membrane studied in the paper,the value of transmembrane potential decrease not only with the increase of the concentration,but also with the increase of the valence of both the anion and cation. The strategy established in the paper can separate SP and MP from transmembrane potential successfully,which will be useful for further analysis of transmembrane potential through theoretical approach.; 国家重点基础研究发展计划项目(2009CB623404)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/64278]
专题	清华大学
推荐引用方式 GB/T 7714	王弘历,尚伟娟,涂丛慧,等. 电解质溶液体系中压力驱动膜过程跨膜电位的实验研究[J],2010, 2010.
APA	王弘历.,尚伟娟.,涂丛慧.,王晓琳.,WANG Hong-li.,...&WANG Xiao-lin.(2010).电解质溶液体系中压力驱动膜过程跨膜电位的实验研究..
MLA	王弘历,et al."电解质溶液体系中压力驱动膜过程跨膜电位的实验研究".(2010).

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