| 黄原胶辐射接枝共聚物对Cd^2＋的吸附研究 |
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| 引用本文： | 苏秀霞,诸晓锋,程磊,郝明德,李仲谨,杨祥龙.黄原胶辐射接枝共聚物对Cd^2＋的吸附研究[J].环境污染治理技术与设备,2010(2):297-300. |
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| 作者姓名： | 苏秀霞 诸晓锋 程磊 郝明德 李仲谨 杨祥龙 |
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| 作者单位： | [1]教育部轻化工助剂化学与技术重点实验室,陕西科技大学,西安710021 [2]中国科学院水利部水土保持研究所,杨凌712100 |
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| 基金项目： | 陕西省科技计划项目（2008K06-15）;“十一五”国家科学技术支撑计划项目（2006BAD09B04）;陕西科技大学研究生创新基金 |
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| 摘 要： | 利用^60Co-γ为辐射源,在氮气保护下对黄原胶（XG）和丙烯酰胺（AM）进行共辐射,制备黄原胶/丙烯酰胺接枝共聚物（XG-g-AM）。研究了XG-g-AM对Cd^2＋的吸附行为,利用红外光谱（IR）、热重分析（TGA）、X射线衍射仪（XRD）对接枝共聚物及吸附产物进行表征。结果表明：XG-g-AM对Cd^2＋离子吸附等温线符合Freund lich等温方程,吸附Cd^2＋使XG-g-AM结晶结构被进一步破坏,结晶度下降。25℃下,Cd^2＋浓度20 mmol/L时,吸附时间100 m in,平衡吸附量为0.835mmol/g。
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| 关 键 词： | 黄原胶 辐射接枝 吸附 Cd^2＋ |
Study on adsorption behavior of xanthan gum co-irradiation graft copolymer for Cd^2＋ ion |
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| Abstract: | Xanthan gum-graft-Acrylamide（XG-g-AM） was prepared using ^60Co-γ rays radiation induced graft of acrylamide（AM） onto xanthan gum（XG）,with nitrogen protection.Adsorption behavior of XG-g-AM for Cd^2＋ was investigated.The structure of the graft copolymer and its adsorption product were characterized by IR,TGA,XRD.The result shows that the adsorption behavior of the XG-g-AM for Cd^2＋ is adapted to Freundlich adsorption isotherm equation.Crystal structure of XG-g-AM was destroyed after adsorbing Cd^2＋,the crystallinity of XG-g-AM decrease.Under 25℃,the concentration of Cd^2＋ was 20 mmol/L,the equilibrium absorption amount of XG-g-AM for Cd^2＋ ion was 0.835 mmol/g when the absorption time was 100 minutes. |
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| Keywords: | xanthan gum irradiation graft adsorption Cd^2＋ |
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