Cr(III) removal from aqueous solutions by depectinated sugar beet pulp

被引：18
|
作者：
Ozer, A
Tumen, F
Bildik, M
机构：
[1] Department of Chemical Engineering, University of Firat, Elazig
来源：
ENVIRONMENTAL TECHNOLOGY | 1997年 / 18卷 / 09期
关键词：
Cr(III) removal; sugar beet pulp; adsorption; thermodynamic parameters; desorption;
D O I：
10.1080/09593331808616608
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
We report a study of the removal of Cr(III) from aqueous solutions by depectinated sugar beet pulp (DSBP) carried out at different initial concentration of Cr(III), pH and temperature of solution, particle size and adsorbent dosage. Removal percentage of Cr(III) was found to be 86 for inital concentration of 10 mg L-1 at 20 degrees C and 20 g L-1 adsorbent dosage. The optimum pH for the process was found to be 4.5. The process of uptake follows first-order adsorption rate expression and obeys Langmuir and Freundlich's adsorption models. Enthalpy change of adsorption was found to be 27.3 kJ mol(-1). Little fraction of Cr(III) was desorbed in strong acidic media.
引用
收藏
页码：893 / 901
页数：9
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