Application of an exponential kinetic equation to the interaction of optical brighteners with pulp

被引：22

作者：

Veleva, S ^{[1
]}

Valcheva, E ^{[1
]}

Valchev, I ^{[1
]}

Radeva, G ^{[1
]}

机构：

[1] Univ Chem Technol & Met, BU-1756 Sofia, Bulgaria

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 2001年 / 72卷 / 02期

关键词：

FWA; exponential kinetic equation;

D O I：

10.1023/A:1010519702163

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：

A bleached softwood kraft pulp was treated with fluorescent whitening agents Tinopal UP and Leucophor AP under different conditions. The kinetics of adsorption-chemical interaction between optical brighteners and pulp was described by an exponential kinetic equation. An entropy heterogeneity of the pulp surface related to the active sorption centers, their accessibility and their spatial orientation was confirmed. The activation energy values obtained were found independent of the brightener concentration and on the increase of pulp whiteness. A decisive role of the entropy factors was ascertained.

引用

页码：355 / 364

页数：10