| 棕壤Cd^（2＋）吸附特征及有机物料分解产物的影响 |
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| 引用本文： | 张大庚,依艳丽,李亮亮,栗杰. 棕壤Cd^（2＋）吸附特征及有机物料分解产物的影响[J]. 中国土壤与肥料, 2008, 0(6) |
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| 作者姓名： | 张大庚 依艳丽 李亮亮 栗杰 |
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| 作者单位： | 沈阳农业大学土地与环境学院,辽宁,沈阳,110161 |
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| 基金项目： | 沈阳农业大学校青年基金资助项目 |
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| 摘 要： | 研究了棕壤上Cd2 的吸附特征及草炭、猪粪和蚯蚓粪3种有机物料的不同分解产物(水溶性和非水溶性)对棕壤Cd2 吸附特征的影响。结果表明,Langmuir模型适于描述棕壤对Cd2 的吸附特征。温度升高棕壤对Cd2 的吸附量增加。热力学参数分析表明,Cd2 在棕壤表面的吸附反应为熵增加的自发过程。3种有机物料对Cd2 平衡吸附量影响顺序大致为非水溶性分解产物>水溶性分解产物;其中草炭分解产物>猪粪分解产物>蚯蚓粪分解产物。
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| 关 键 词： | 镉 吸附 有机物料 分解产物 |
Effects of decomposition products of organic materials oil adsorption of Cd |
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| ZHANG Da-geng,YI Yan-li,LI Liang-liang,LI Jie. Effects of decomposition products of organic materials oil adsorption of Cd[J]. Soil and Fertilizer Sciences, 2008, 0(6) |
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| Authors: | ZHANG Da-geng YI Yan-li LI Liang-liang LI Jie |
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| Abstract: | The article studied the effects of decomposition products of organic materials(grass charcoal,pig manure,earthworm manure) on adsorption of Cd2 .The results showed that the Langmuir equation could be used to describe the Cd2 adsorption isotherm.The adsorption of Cd2 was about to increase,as temperature adding.The study of thermodynamic parameters showed hat adsorption on modified soils was spontaneously controlled by entropy increment.The effect order of organic materials on adsorption capacity of Cd2 was insoluble decomposition product >soluble decomposition product;grass charcoal decomposition product >pig manure decomposition product>earthworm manure decomposition product>CK. |
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| Keywords: | Cd organic materials soluble insoluble decomposition product |
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