材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
逆浸透用膜材料に関する研究 II
酢酸セルロース (濃度分極および塩ゲル化)
油井 敬夫黒川 洋一稲葉 文夫
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1975 年 24 巻 261 号 p. 511-515

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Concentration polarization effect has been investigated for a batch type reverse osmosis cell with the membranes prepared in 3% NaCl solution at various annealing temperatures. It was found that this effect became stronger for a higher water flux membrane. Effects of salt-gelation on the reverse osmosis properties of cellulose acetate membrane have been investigated also. The membrane shrinkage increased with salt concentration of gelation medium. Correspondingly the salt rejection increased but the water flux decreased. The salt-gelation effect was in accord with the order in the lyotropic series. No evidence of asymmetric character of the reverse osmosis has been observed for the salt-gelled membrane.

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