Kinetic analysis of phenol adsorption from aqueous systems

被引：6

作者：

Mijangos, F ^{[1
]}

Navarro, A ^{[1
]}

Jodra, Y ^{[1
]}

机构：

[1] Univ Basque Country, Dept Chem Engn, Bilbao 48080, Spain

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2001年 / 79卷 / 05期

关键词：

polymeric adsorbent; phenols; kinetic of adsorption; aqueous wastes; surface diffusion;

D O I：

10.1002/cjce.5450790506

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The kinetic adsorption of mixtures of phenolic compounds onto a polymeric adsorbent from aqueous solutions was studied. Experimental data for single-component solutions were obtained and fitted to a parallel diffusion model. Effective diffusion coefficients were related to liquid-phase diffusion and surface diffusion. The effect of solute concentration and salinity on these parameters was also analysed. Van Laar's equation is proposed to evaluate the influence of concentration on diffusion. The adsorption kinetics for phenol and p-cresol mixtures at different initial concentration ratios were determined and correctly adjusted to the mentioned kinetic model. Results confirm that adsorption from multicomponent aqueous solutions is a surface diffusion-controlled process.

引用

页码：737 / 743

页数：7

共 17 条

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