Adsorption of Hexavalent Chromium from Aqueous Solutions by Compost: Adsorption Equilibrium and Kinetics

被引：0
|
作者：
Nameni, Mahboobeh [1 ]
Moghaddam, Mohammad Reza Alavi [1 ]
Arami, Mokhtar [2 ]
机构：
[1] Amirkabir Univ Technol, Dept Civil & Environm Engn, Tehran 158754413, Iran
[2] Amirkabir Univ Technol, Dept Text Engn, Tehran 158754413, Iran
来源：
JOURNAL OF RESIDUALS SCIENCE & TECHNOLOGY | 2009年 / 6卷 / 02期
关键词：
DYE REMOVAL; METAL-IONS; CR(VI); SORPTION; SAWDUST; CARBON;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this research, adsorption of Cr(VI) on municipal compost has been studied. The main objectives are (1) investigating chromium adsorption from aqueous solutions by compost, (2) studying the influence of contact time, pH and initial chromium concentration on adsorption process and (3) determining appropriate adsorption isotherm and kinetics parameters of Cr(VI) adsorption. The results showed that a reasonable adsorption of chromium obtained after 180 minutes. Higher chromium Adsorption observed in lower pHs, and maximum chromium removal (74.63%) obtained in pH = 2. The adsorption of chromium by compost decreased at the higher initial chromium concentration. The adsorption process follows Freundlich isotherm equation (R-2 = 0.976) and the pseudo-second order kinetic model.
引用
收藏
页码：75 / 81
页数：7
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