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The Isothermal Adsorption and Transport of Cadmium,Zinc in Different Texture
Author(s): 
Pages: 61-64,67
Year: Issue:  4
Journal: Environmental Science and Management

Keyword:  等温吸附土柱实验迁移;
Abstract: 采用等温吸附实验和土柱实验,探讨了重金属镉、锌在青岛地区三种主要土壤(棕壤、潮土和砂浆黑土)中的静态吸附特征和在石英砂、石英粉中的动态迁移特性.在静态等温吸附实验中,棕壤和潮土对Cd2+、Zn2+的吸附量相近,而黑土对Cd2+、Zn2+的吸附量明显高于棕壤和潮土.Cd2+、Zn2+的吸附比率随着加入浓度的增加而减少.在动态迁移实验中,Cd2+、Zn2+的迁移特性受介质质地、加入浓度、背景浓度和pH值的影响.由实验可知:Zn2+的迁移性比Cd2+强;随着pH的升高,介质对重金属的吸附容量和固持力增加.
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