| 硅溶胶改性羧甲基纤维素-聚丙烯酸对铅(Ⅱ)的吸附研究 |
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| 引用本文： | 徐浩龙.硅溶胶改性羧甲基纤维素-聚丙烯酸对铅(Ⅱ)的吸附研究[J].河南科学,2012,30(7):857-860. |
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| 作者姓名： | 徐浩龙 |
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| 作者单位： | 渭南师范学院化学与生命科学学院,陕西渭南714000;陕西省多河流湿地生态环境重点实验室,陕西渭南714000 |
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| 基金项目： | 陕西省教育厅专项科研项目，渭南师范学院专项科研项目 |
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| 摘 要： | 以过硫酸铵为引发剂,N,N′-亚甲基双丙烯酰胺为交联剂,采用自由基聚合法使羧甲基纤维素与丙烯酸进行接枝共聚,硅溶胶改性后,应用于Pb(Ⅱ)的吸附研究.考察了原料配比p、H、溶液浓度、吸附时间对吸附性能的影响.结果表明:硅酸钠质量分数为6%、pH为6时,复合材料表现出最佳吸附性能;吸附时间为120 min时,最大吸附率为99.11%,吸附容量为9.92 mg/g.
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| 关 键 词： | 羧甲基纤维素 硅溶胶 铅(Ⅱ) 吸附 |
Studies on the Improvement of Adsorptive Power of Carboxymethylcellulose Graft Acrylic Acid with Silicic Sol for Pb (Ⅱ) |
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| Xu Haolong.Studies on the Improvement of Adsorptive Power of Carboxymethylcellulose Graft Acrylic Acid with Silicic Sol for Pb (Ⅱ)[J].Henan Science,2012,30(7):857-860. |
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| Authors: | Xu Haolong |
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| Institution: | Xu Haolong(1.College of Chemistry and Life Sciences,Weinan Nornal University,Weinan 714000,Shaanxi China; 2.Key Laboratory for Eco-environment of Multi-River Wetlands in Shaanxi Province,Weinan 714000,Shaanxi China) |
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| Abstract: | Grafted copolymerization of acrylic acid on carboxymethylcellulose,using ammonium peroxydisulfate as the intiator and N,N′-methylenebisacrylamide as the cross-linking agent and modified by silicic sol,was prepared from carboxymethylcellulose,acrylic acid and by the method of copolymerization and cross-linking,and applied to Pb（Ⅱ） absorbefacient.The results showed that the maximum of the adsorption rate was 99.11% and 9.92 mg/g for absorption value,when pH=6 and the mass fraction of sodium silicate was 6%,adsorbent period was 120 minutes and concentration of Pb（Ⅱ） was 100 mg/L. |
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| Keywords: | carboxymethylcellulose silicic sol Pb（Ⅱ） adsorption |
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