| 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].环境工程学报,2010,4(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Cd2+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Cd2+离子吸附等温线符合Freund lich等温方程,吸附Cd2+使XG-g-AM结晶结构被进一步破坏,结晶度下降。25℃下,Cd2+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 Cd2+ |
| 修稿时间： | 4/8/2009 12:00:00 AM |
Study on adsorption behavior of xanthan gum co-irradiation graft copolymer for Cd2+ ion |
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| Su Xiuxi,Zhu Xiaofeng,Cheng Lei,Hao Mingde,Li Zhongjin and Yang Xianglong.Study on adsorption behavior of xanthan gum co-irradiation graft copolymer for Cd2+ ion[J].Techniques and Equipment for Environmental Pollution Control,2010,4(2):297-300. |
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| Authors: | Su Xiuxi Zhu Xiaofeng Cheng Lei Hao Mingde Li Zhongjin and Yang Xianglong |
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| Abstract: | Xanthan gum-graft-Acrylamide( XG-g-AM) was prepared using ~(60)Co-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 Freundli-ch adsorption isotherm equation. Crystal structure of XG-g-AM was destroyed after adsorbing Cd~(2+) , the crystal-linity 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 Cd2+ |
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