Modification of ultrafiltration membranes by deposition of colloid particles

被引：4

作者：

Alargova, RG ^{[1
]}

Petkov, JT ^{[1
]}

Denkov, ND ^{[1
]}

Petsev, DN ^{[1
]}

Ivanov, IB ^{[1
]}

机构：

[1] Univ Sofia, Fac Chem, Lab Thermodynam & Phys Chem Hydrodynam, BU-1126 Sofia, Bulgaria

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1998年 / 134卷 / 03期

关键词：

dynamic light scattering from dextran solutions; membrane characterization; membrane modification; retention coefficient of membranes;

D O I：

10.1016/S0927-7757(97)00221-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We describe an experimental procedure for the modification of ultrafiltration membranes by the deposition of monodisperse polymer spheres. The conditions for irreversible formation of particulate deposit are studied and correlated with the particle charge. The separation characteristics of the membranes before and after particle deposition are compared. For this purpose, a method for determining the membrane rejection coefficient is developed. The method is based on the light-scattering study of permeates obtained upon the filtration of commercial dextran samples. The results show that the modified membranes have improved retention characteristics. (C) 1998 Elsevier Science B.V.

引用

页码：331 / 342

页数：12

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