Effect of chitosan on the available contents and vertical distribution of Cu2+ and Cd2+ in different textural soils

被引：7
|
作者：
Guo, Zhi [1 ]
Hu, Xiang [1 ]
Ao, Yansong [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Agr & Biol, Dept Plant Sci, Shanghai 200240, Peoples R China
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 167卷 / 1-3期
关键词：
Chitosan; Soil remediation; Copper; Cadmium; Vertical distribution; METAL-IONS; KINETICS; COMPLEXATION; EQUILIBRIUM; ADSORPTION; REMOVAL;
D O I：
10.1016/j.jhazmat.2009.01.112
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Chitosan, an environment-friendly biopolymer, has been adopted to remedy contaminated soils by heavy metals of Cu2+ and Cd2+. Experimental results demonstrated that, within the first 7 cl, available Cu2+ and Cd2+ contents in three textural soils (clay, loam, and sandy soil) decreased significantly after chitosan application. Moreover, the available Cu2+ and Cd2+ contents in soil layers of 14-16 cm and 24-26 cm, were significantly reduced than that in 4-6 cm after 7 d of chitosan application. Our investigation suggested that application of 0.9 g chitosan kg(-1) DW soil for 7 d could be perfect for the remediation of the soil contaminated by Cu2+ and Cd2+. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1148 / 1151
页数：4
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