Biosorption Characteristics of Sawdust for the Removal of Cd(II) Ions: Mechanism and Thermodynamic Studies

被引：34

作者：

Albadarin, Ahmad B. ^{[1
]}

Mangwandi, Chirangano ^{[1
]}

Walker, Gavin M. ^{[1
]}

Allen, Stephen J. ^{[1
]}

Ahmad, Mohammad N. ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland

来源：

ICHEAP-10: 10TH INTERNATIONAL CONFERENCE ON CHEMICAL AND PROCESS ENGINEERING, PTS 1-3 | 2011年 / 24卷

关键词：

ADSORPTION;

D O I：

10.3303/CET1124217

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Surface reaction methodology was employed for the optimization of cadmium removal onto sawdust with respect to various physico-chemical parameters. FT-IR was principally employed for the assessment of the chemical structure of sawdust. The biosorption equilibrium data were best represented by Khan and Langmuir isotherms. The monolayer sorption capacity obtained from Langmuir model was found to be 41.21 mg/g. Biosorption showed pseudo second order rate kinetics at different initial concentration of Cd(II). The intraparticle diffusion study indicated that film diffusion may be involved in the current study. Thermodynamic parameters showed that the sorption process is exothermic and non-spontaneous.

引用

页码：1297 / 1302

页数：6

共 5 条

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