| SYNTHESIS AND PROPERTIES OF SULFHYDRYL CHITOSAN |
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| 作者姓名： | 杨宇民 邵健 姚成 |
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| 作者单位： | [1]NancongMedicalCollege,Nantong,Jiangsu226001,China [2]NanjingUniversityofChemicalTechnology,Nanjing,210009,China |
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| 摘 要： | A new adsorbent for heavy metal ions, sulfhydryl chitosan (S-chitosan), was produced by treatment of chitosan with sulhydryl acetic acid in the presence of sulfuric acid as a catalyst. Its structure was confrrmed by elemental analysis and FI‘-IR spectra analysis. The adsorption properties of sulthydryl chitosan for Cu(Ⅱ ), Cd(Ⅱ ), Pb(Ⅱ), Cr(Ⅲ) and Ni(Ⅱ) were investigated, and the effect of pH value on adsorption, adsorption kinetics, and selective adsorption was examined. It was shown that S-chitosan has good adsorption for Pb(Ⅱ), Cu(Ⅱ) and Cd(Ⅱ) like chitosan, is also insoluble in acid solution; has good adsorption kinetic properties for heavy metal ions; and can be used in acid solution. The adsorption capacities of S-chitosan can be affected by media acidity. The adsorbed Cu(Ⅱ) Cd(Ⅱ) and Pb(Ⅱ) could be eluted by diluted chlorhydric acid.
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| 关 键 词： | 重金属离子 吸附 聚氨基葡萄糖 乙酸 硫磺酸 催化剂 光谱分析 |
| 收稿时间： | 7 October 2000 |
| 修稿时间： | 28 May 2001 |
Synthesis and properties of sulfhydryl chitosan |
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| Yang Yu-min,Shao Jian,Yao Cheng.SYNTHESIS AND PROPERTIES OF SULFHYDRYL CHITOSAN[J].Chinese Journal of Oceanology and Limnology,2001,19(4):375-381. |
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| Authors: | Yang Yu-min Shao Jian Yao Cheng |
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| Institution: | (1) Nantong Medical College, 266001 Nantong, Jiangsu, China;(2) Nanjing University of Chemical Technology, 210009 Nanjing, China |
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| Abstract: | A new adsorbent for heavy metal ions, sulfhydryl chitosan (S-chitosan), was produced by treatment of chitosan with sulhydryl
acetic acid in the presence of sulfuric acid as a catalyst. Its structure was confirmed by elemental analysis and FT-IR spectra
analysis. The adsorption properties of sulfhydryl chitosan for Cu(II), Cd(II), Pb(II), Cr(III) and Ni(II) were investigated,
and the effect of pH value on adsorption, adsorption kinetics, and selective adsorption was examined. It was shown that S-chitosan
has good adsorption for Pb(II), Cu(II) and Cd(II) like chitosan, is also insoluble in acid solution; has good adsorption kinetic
properties for heavy metal ions; and can be used in acid solution. The adsorption capacities of S-chitosan can be affected
by media acidity. The adsorbed Cu(II) Cd(II) and Pb(II) could be eluted by diluted chlorhydric acid. |
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| Keywords: | sulfhydryl chitosan adsorption property heavy metal ions chitosan |
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