| 玉米秸秆对土壤吸持六价铬影响的试验研究 |
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| 引用本文： | 傅臣家,刘洪禄,吴文勇,郝仲勇,师彦武,曾德超.玉米秸秆对土壤吸持六价铬影响的试验研究[J].灌溉排水学报,2008,27(5):4-8. |
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| 作者姓名： | 傅臣家 刘洪禄 吴文勇 郝仲勇 师彦武 曾德超 |
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| 作者单位： | [1]中国农业大学,北京100083 [2]北京市水利科学研究所,北京100044 |
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| 基金项目： | 北京市科技攻关项目，国家高技术研究发展计划(863计划) |
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| 摘 要： | 玉米秸秆是一种有机物料,它可以促进六价铬的吸持。研究通过批平衡试验,描述了不同玉米秸秆投入量对土壤吸持六价铬的影响及其动力学过程,通过10个动力学模型进行了拟合,效果较好。另外,还描述了反应的吸附等温线和平衡模型,结果可以用Herry模型、langmuir模型、Freundlich模型和Tekmin模型进行较好模拟。结果表明,秸秆有效地促进了六价铬在土壤中的吸持,可以作为六价铬的吸附剂。该结果具有良好的环境效应和经济效应。通过土柱试验,分别研究了秸秆覆盖和混合对土壤吸持六价铬的影响,有较好的实践意义。
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| 关 键 词： | 吸持 六价铬 土壤 玉米秸秆 |
Effects on Adsorption of Hexavalent Chromium in Soils by Adding Corn Stalk Powder |
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| FU Chen-jia,LIU Hong-lu,WU Wen-yong,HAO Zhong-yong,SHI Yan-wu,ZENG De-chao.Effects on Adsorption of Hexavalent Chromium in Soils by Adding Corn Stalk Powder[J].Journal of Irrigation and Drainage,2008,27(5):4-8. |
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| Authors: | FU Chen-jia LIU Hong-lu WU Wen-yong HAO Zhong-yong SHI Yan-wu ZENG De-chao |
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| Institution: | FU Chen-jia1,LIU Hong-lu2,WU Wen-yong2,HAO Zhong-yong2,SHI Yan-wu2,ZENG De-chao1(1.China Agricultural University,Beijing 100083,China,2.Beijing Hydraulic Research Institute,Beijing 100044,China) |
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| Abstract: | The adsorption of hexavalent chromium Cr(Ⅵ) in three kinds of soils in Beijing is discussed in a well-stirred batch reactor by adding corn stalk powder.The results indicate that the amounts of hexavalent chromium adsorbed in soils increase with the quantity increasing of corn stalk.The residual concentration of hexavalent chromium Cr(Ⅵ) fall rapidly.Equilibrium data were well described by typical Herry,Langmiur,Freundlich and Tekmin adsorption isotherms.Effects on adsorption of Cr(Ⅵ) in soils covered and mixed with corn stalk are also investigated. |
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| Keywords: | adsorption hexavalent chromium soil corn stalk |
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