CONCENTRATION OF GELATIN SOLUTIONS BY DYNAMIC ULTRAFILTRATION MEMBRANES

被引：6

作者：

IMANARA, T ^{[1
]}

SHISHIDO, N ^{[1
]}

KIKKAWA, T ^{[1
]}

YAHIRO, Y ^{[1
]}

TACHI, M ^{[1
]}

机构：

[1] RYOKA TECH ENGN & CONSTRUCT CO,TOKYO 151,JAPAN

来源：

KAGAKU KOGAKU RONBUNSHU | 1990年 / 16卷 / 01期

关键词：

Alumina Sol; Colloidal Silica; Dynamic Membrane; Gelatin; Membrane Separation; Porous Ceramic Tube; Ultrafiltration;

D O I：

10.1252/kakoronbunshu.16.1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A dual-layer dynamic membrane was successfully developed and employed in dewatering aqueous gelatin solutions. The membrane was formed by flowing suspended solutions of alumina sol and colloidal silica on a porous ceramic tube. The silica layer was treated with buffer solution of pH 2 to 3, and was fixed by flowing either hot water or gelatin solution. This membrane rejected more than 90 % of polyethylene glycol, the molecular weight of which was about 1500. The optimum gelatin concentrating conditions were found to be : pressure, 2-3 MPa; mean flow velocity, 0.6-1.0 m/s; temperature, 60°C. Under these conditions this membrane was able to reject 99.5% of the gelatin with high water flux. Low-molecular weight components including inorganic salts in the feed were partly removed from the gelatin solution in this operation. © 1990, The Society of Chemical Engineers, Japan. All rights reserved.

引用

页码：1 / 8

页数：8

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