| 改性玉米淀粉对Cu2＋、Pb2＋和Zn2＋的吸附特性研究 |
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| 引用本文： | 廖强强,李义久,相波,季靓,陈琳,何微娜.改性玉米淀粉对Cu2＋、Pb2＋和Zn2＋的吸附特性研究[J].环境污染治理技术与设备,2010(9):2033-2036. |
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| 作者姓名： | 廖强强 李义久 相波 季靓 陈琳 何微娜 |
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| 作者单位： | [1]上海电力学院上海高校电力腐蚀控制与应用电化学重点实验室,上海200090 [2]上海热交换系统节能工程技术研究中心,上海200090 [3]同济大学化学系,上海200092 |
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| 基金项目： | 国家自然科学基金资助项目（20577034）; 上海市重点学科建设项目（P1304）; 上海市科委资助项目（08DZ2210800） |
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| 摘 要： | 以玉米淀粉为原料,经过交联、醚化、胺化和亲核加成等步骤合成了一种新型重金属吸附剂——二硫代氨基甲酸改性淀粉（DTCS）。改性淀粉的结构采用红外光谱和扫描电镜进行表征。DTCS是一种性能优良的重金属吸附剂,对Cu2＋、Pb2＋和Zn2＋的饱和吸附容量随着pH（pH=2~6）的增加而增大。在有EDTA络合剂存在和酸性废水pH小于3的情况下,DTCS对Cu2＋、Pb2＋和Zn2＋仍有较高的去除率,分别达到90%、75%和50%以上,说明DTCS在含重金属离子的实际废水体系具有一定的实用价值。
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| 关 键 词： | 改性淀粉 二硫代氨基甲酸基 重金属离子 吸附 |
Study on sorption of Cu~（2＋）,Pb~（2＋） and Zn~（2＋） by modified corn starch |
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| Liao Qiangqiang,Li Yijiu Xiang Bo Ji Liang Chen Lin He Weina.Study on sorption of Cu~（2＋）,Pb~（2＋） and Zn~（2＋） by modified corn starch[J].Techniques and Equipment for Environmental Pollution Control,2010(9):2033-2036. |
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| Authors: | Liao Qiangqiang Li Yijiu Xiang Bo Ji Liang Chen Lin He Weina |
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| Institution: | 1.Key Laboratory of Shanghai Colleges and Universities for Electric Power Corrosion Control and Applied Electrochemistry,Shanghai University of Electric Power,Shanghai 200090,China;2.Shanghai Engineering Research Center of Energy-Saving in Heat Exchange Systems,Shanghai 200090,China;3.Department of Chemistry,Tongji University,Shanghai 200092,China) |
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| Abstract: | A modified dithiocarbamate starch（DTCS）,a new heavy metal adsorbent,was synthesized with corn starch as raw material by means of crosslinking,etherification,amination,and nucleophilic addition.The structures of modified starch were characterized by FTIR spectroscopy,and scanning electron microscopy（SEM）.DTCS is a preferred heavy metal adsorbent.When the pH（pH=2~6） values of aqueous solutions increase,the saturated extent of adsorption of Cu2＋,Pb2＋ and Zn2＋ by DTCS is improved.The removal rates of Cu2＋,Pb2＋ and Zn2＋ by DTCS are more than 90%,75% and 50%,respectively in the solutions with EDTA and pH3,illustrating that DTCS is worthy to treat actual wastewater containing heavy metal ions. |
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| Keywords: | modified starch dithiocarbamate heavy metal ions sorption |
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