| 高分子重金属絮凝剂MAPEI处理含镉废水的研究 |
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| 引用本文： | 王爽,葛建团,常青,徐敏.高分子重金属絮凝剂MAPEI处理含镉废水的研究[J].环境科学与管理,2011,36(6):56-60. |
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| 作者姓名： | 王爽 葛建团 常青 徐敏 |
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| 作者单位： | 1. 兰州交通大学环境与市政工程学院,甘肃兰州,730070
2. 甘肃省环境科学设计研究院,甘肃兰州,730030 |
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| 基金项目： | 甘肃省水环境科学与工程创新团队项目(No.2006-07) |
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| 摘 要： | 以聚乙烯亚胺、巯基乙酸为原料,通过酰胺化反应合成了一种新型高分子重金属絮凝剂巯基乙酰聚乙烯亚胺(MAPEI),研究其处理含镉废水的性能,并对几个影响因素进行了考察。实验结果表明:①该絮凝剂对Cd2+有很好的捕集性能,最高去除率可达99.9%以上;②水中常见阳离子Na+、K+、Mg2+对Cd2+的去除起促进作用;③水中常见阴离子C l-、SO42-、NO3-对Cd2+的去除也起促进作用;④pH值在6.0至8.0范围内变化时,pH值越高去除Cd2+的效果越好;⑤Cd2+和致浊物质共存时,会相互促进彼此的去除。
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| 关 键 词： | 高分子重金属絮凝剂 聚乙烯亚胺 含镉废水 巯基乙酸 |
Study on Disposal of Cadmium Wastewater by Macromolecular Heavy Metal Flocculant MAPEI |
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| Wang Shuang,Ge Jiantuan,Chang Qing,Xu Min.Study on Disposal of Cadmium Wastewater by Macromolecular Heavy Metal Flocculant MAPEI[J].Environmental Science and Management,2011,36(6):56-60. |
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| Authors: | Wang Shuang Ge Jiantuan Chang Qing Xu Min |
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| Institution: | Wang Shuang1,Ge Jiantuan2,Chang Qing1,Xu Min1(1.School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China,2.Gansu Academy of Environmental Science Research and Design,Lanzhou 730030,China) |
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| Abstract: | A novel water-soluble macromolecule heavy metal flocculants,mercaptoacetyl polyethyleneimine（MAPEI）,was synthesized by polyethyleneimine（PEI） and thioglycolic acid（TGA） reaction.The flocculation performance of MAPEI was evaluated by using cadmium wastewater as target.Factors which affect the removal of Cd2＋ were also studied.The experimental results show that： ① MAPEI is very efficient for the removal of Cd2＋,the highest removal rate of Cd2＋ is above 99.9%;② The presence of common cationic such as Na＋,K＋ and Mg2＋ ions in wastewater promote the removal of Cd2＋;③ The presence of common anion such as C1-,NO-3 and SO2-4 ions in wastewater also promote the removal of Cd2＋;④ When pH value changes from 6.0 to 8.0,the removing efficiency of Cd2＋ raise with the increase of pH value;⑤ coexistence of Cd2＋ ions and turbidity material facilitate the removal of both materials. |
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| Keywords: | macromolecule heavy metal flocculant polyethyleneimine(PEI) cadmium wastewater thioglycolic acid(TGA) |
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