Effect of properties of feed solution on transport of inorganic solutes in reverse osmosis.

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概要

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• This paper deals with the transport properties of inorganic solutes through cellulose acetate membranes. The main purpose of the study is to clarify the effect of both pH and other solutes on the rejection of a particular solute, such as alkali and heavy metal ions. Reverse osmosis experiments were carried out with a batchwise apparatus for several kinds of solution systems in which the concentration of each solution was relatively low. It was found that the rejection of a metal ion is strongly influenced by the pH value of a feed solution. It was also found that the rejection of a particular solute in a mixed-salt solution system is different from that in a single-salt solution system. The degree of the change in rejection depends on the species, concentration and permeation of solutes present in aqueous solutions. In particular, it may be affected strongly by exceedingly permeable or impermeable ions. It is recognized that pH dependence of rejection is attributable to the problem of coexisting solute in mixed-salt solution systems.

• 公益社団法人 化学工学会の論文

著者

• Terashima Yutaka

  Department of Cardiology, Cardiological Institute, Tokyo Womens Medical University

• KISO Yoshiaki

  Department of Ecological Engineering, Toyohashi University of Technology, JAPAN.

• KITAO TAKANE

  Department of Sanitary Engineering, Kyoto University

• SUGAHARA MASATAKA

  Department of Sanitary Engineering, Kyoto University

• IWAI SHIGEHISA

  Department of Sanitary Engineering, Kyoto University

• Terashima Yutaka

  Department of Cardiology, Cardiological Institute, Tokyo Women's Medical University

• TERASHIMA YUTAKA

  Department of Sanitary Engineering, Kyoto University

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