| 猪粪及蚓粪对Cu和Zn吸附行为的比较研究 |
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| 引用本文： | 朱维琴,贾秀英,李喜梅,刘薇.猪粪及蚓粪对Cu和Zn吸附行为的比较研究[J].农业环境科学学报,2009,28(2). |
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| 作者姓名： | 朱维琴 贾秀英 李喜梅 刘薇 |
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| 作者单位： | 杭州师范大学生命与环境科学学院,浙江,杭州,310036 |
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| 摘 要： | 采用室内试验方法,比较研究了猪粪和蚓粪对Cu2+、Zn2+的吸附、解吸规律及吸附动力学行为.结果表明,在试验浓度范围内,猪粪和蚓粪对Cu2+、Zn2+的吸附量均随着Cu2+、Zn2+呻农度的增加而增加,蚓粪对Cu2+、Zn2+的吸附固定能力明显高于猪粪.猪粪和蚓粪对Cu2+、Zn2+的吸附等温线与Freundlich和Henry方程均有较好的拟合性.猪粪和蚓粪中Cu2+、Zn2+的解吸量随着吸附量的增大而增加,在相同初始浓度条件下,猪粪吸附的Cu2+更易被解吸,而猪粪和蚓炎对Zn2+的解吸能力相近.猪粪和蚓粪对Cu2+、Zn2+的吸附速率均较快,10～30 min之内可以达到平衡后吸附总量的90%以上;一级动力学方程是描述Cu2+、Zn2+在猪粪和蚓粪中吸附动力学过程的最优模型,且蚓粪对Cu2+、Zn2+的吸附速率明显高于猪粪.
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| 关 键 词： | 猪粪 蚓粪 吸附 解吸 |
Adsorption Behaviour of Copper and Zinc on Pig Manure and Its Vermicompost |
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| ZHU Wei-qin,JIA Xiu-ying,LI Xi-mei,LIU Wei.Adsorption Behaviour of Copper and Zinc on Pig Manure and Its Vermicompost[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2009,28(2). |
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| Authors: | ZHU Wei-qin JIA Xiu-ying LI Xi-mei LIU Wei |
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| Institution: | College of Life and Environmental Science;Hangzhou Normal University;Hangzhou 310016;China |
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| Abstract: | Copper and zinc are the commonly-occurring micronutrients used in pig manures since their anti-microbial and growth-stimulat-ing effects.As the end product of using earthworm to break down pig manure,vermicompost has much larger surface area mainly because of the increased decomposition and humification during earthworm treatment period.Since both pig manure and its vermicomposts are organic wastes and can be used as organic fertilizers for agricultural soils,they may have some different effects on the beha... |
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| Keywords: | Cu Zn |
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