Removal of Cr(VI) from aqueous solution by London plane leaves

被引：40
作者：
Aoyama, M [1 ]
机构：
[1] Hokkaido Forest Prod Res Inst, Asahikawa, Hokkaido 0710198, Japan
来源：
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 2003年 / 78卷 / 05期
关键词：
removal of Cr(VI); adsorption; London plane leaves; Platanus x acerifolia Willd;
D O I：
10.1002/jctb.838
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The effect of initial metal concentration, contact time and solution temperature on the removal of Cr(VI) from solution by waste London plane leaves, generated by the pruning of street trees, was investigated in batch mode conditions. The removal of Cr(VI) was highly concentration-dependent and mainly governed by physico-chemical adsorption under the weak acidic conditions studied. The equilibrium data fit well in the Langmuir isotherm model. The Langmuir constants were calculated at different temperatures and both the adsorption capacity and adsorption intensity increased with rising temperature. The endothermic nature of the Cr(VI) adsorption was confirmed by the thermodynamic parameters. The study has shown that the waste leaves can be used as an effective adsorbent for removal of Cr(VI) from wastewater. (C) 2003 Society of Chemical Industry.
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收藏
页码：601 / 604
页数：4
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