Biosorption of Cadmium and Lead from Aqueous Solutions by Chlorella vulgaris Biomass: Equilibrium and Kinetic Study

被引：0
|
作者：
Gaber Edris
Yahia Alhamed
Abdulrahim Alzahrani
机构：
[1] King Abdulaziz University,Chemical and Materials Engineering Department, Faculty of Engineering
来源：
Arabian Journal for Science and Engineering | 2014年 / 39卷
关键词：
Biosorption; Cadmium; Lead; Heavy metals;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Biosorption of cadmium and lead from aqueous solution was investigated using green algae Chlorella vulgaris at room temperature and at pH adjusted to 7.0. Various sorption parameters such as contact time, initial metal ion concentration and biomass quantity were studied. The equilibrium experimental data are well represented by Langmuir model among two-parameter models. It was noted that the maximum adsorption capacity for cadmium and lead was 149.9 and 178.5 mg (metal) g−1 biomass, respectively. The kinetic data were fitted by models including pseudo-first order and pseudo-second order. It was observed that, the pseudo-first-order kinetic model describes the biosorption of cadmium and lead ions onto C. vulgaris biomass.
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页码：87 / 93
页数：6
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