| 生物有机肥对重金属的吸附解吸作用的影响 |
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| 引用本文： | 刘秀春,GAO Yan-min,范业宏,WANG Bao-shen.生物有机肥对重金属的吸附解吸作用的影响[J].土壤通报,2008,39(4). |
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| 作者姓名： | 刘秀春 GAO Yan-min 范业宏 WANG Bao-shen |
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| 基金项目： | 国家科技部成果转化项目
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省重点科技攻关项目子专题 |
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| 摘 要： | 通过室内培养的方法比较了生物有机肥和干鸡粪对重金属离子Pb2+、Cd2+、Cr3+、As6+的吸附与解吸特性。研究结果表明:生物有机肥和鸡粪对4种重金属离子的吸附量大小依次为Cr3+>Pb2+>Cd2+>As6+,解吸量大小顺序为Pb2+>Cd2+>Cr3+>As6+,而解吸率的大小顺序为As6+>Pb2+>Cd2+>Cr3+,这主要与四种金属离子的电荷种类、数量及水合离子半径等密切相关。与干鸡粪相比,生物有机肥增加了对4种重金属离子的吸附率,同时降低了对4种重金属离子的解吸率。
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| 关 键 词： | 生物有机肥 重金属离子 吸附 解吸 |
Adsorption and Desorption of Heavy Metal Ions by Organic Fertilizers |
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| LIU Xiu-chun,GAO Yan-min,FAN Ye-hong,WANG Bao-shen.Adsorption and Desorption of Heavy Metal Ions by Organic Fertilizers[J].Chinese Journal of Soil Science,2008,39(4). |
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| Authors: | LIU Xiu-chun GAO Yan-min FAN Ye-hong WANG Bao-shen |
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| Abstract: | Influence of organic fertilizer on the adsorption and desorption of Pb2+,Cd2+,Cr3+ and As6+ was studied. Results showed that the maximum adsorption amounts of the four heavy metal ions increased in the order of Cr3+>Pb2+>Cd2+>As6+ on both organic fertilizer and dry chicken manure, the desorption amounts were Pb2+>Cd2+>Cr3+>As6+and whereas desorption ratio was in the order of As6+>Pb2+>Cd2+>Cr3+. Compared with dry chicken manure,the organic fertilizer not only enhanced the adsorption capacity of Pb2+,Cd2+,Cr3+ and As6+, but also reduced the relevant desorption ratio. |
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| Keywords: | Organic fertilizer Heavy metal ions Adsorption Desorption |
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