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| 水杨酸型螯合吸附材料对重金属离子的吸附性能 | |
| 引用本文： | 安富强,代新,王晓华,万敏,高建峰. 水杨酸型螯合吸附材料对重金属离子的吸附性能[J]. 化学通报, 2012, 0(5): 446-451 |
| 作者姓名： | 安富强 代新 王晓华 万敏 高建峰 |
| 作者单位： | 中北大学化学系 |
| 摘 要： | 将5-氨基水杨酸接枝到PGMA/SiO2微粒的聚甲基丙烯酸缩水甘油酯(PGMA)大分子链上,成功制备了一种新型螯合吸附材料ASA-PGMA/SiO2。采用静态法研究了ASA-PGMA/SiO2对重金属离子Cu2+、Cd2+、Zn2+、Pb2+的吸附性能,结果表明其对Cu2+、Cd2+、Zn2+、Pb2+具有很强的螯合吸附能力,吸附容量分别可以达到0.42、0.40、0.35、0.31mmol/g。体系的pH对吸附容量影响较大,吸附行为服从Langmuir和Freundlich吸附模型。使用0.1mol/L的盐酸溶液就可实现重金属离子的解吸。通过反复吸附-解吸实验证明ASA-PGMA/SiO2具有良好的重复使用性能。 |
| 关 键 词： | 螯合吸附 重金属离子 5-氨基水杨酸 聚甲基丙烯酸缩水甘油酯 硅胶 |
Adsorption Properties of Salicylic Acid Type Chelate Adsorbent for Heavy Metal Ions |
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| An Fuqiang,Dai Xin,Wang Xiaohua,Wan Min,Gao Jianfeng. Adsorption Properties of Salicylic Acid Type Chelate Adsorbent for Heavy Metal Ions[J]. Chemistry, 2012, 0(5): 446-451 | |
| Authors: | An Fuqiang Dai Xin Wang Xiaohua Wan Min Gao Jianfeng |
| Affiliation: | (Chemical Department,North University of China,Taiyuan 030051) |
| Abstract: | In this study,5-Aminosalicylic acid(5-ASA) was successfully grafted onto the poly(glycidyl methacrylate)(PGMA) macromolecular chains of PGMA/SiO2 to obtain a novel adsorbent ASA-PGMA/SiO2.The adsorption properties of ASA-PGMA/SiO2 for heavy metal ions were researched through batch method.The experimental results showed that ASA-PGMA/SiO2 possesses strong chelating adsorption ability for heavy metal ions and the adsorption capacity for Cu2+,Cd2+,Zn2+ and Pb2+ reached 0.42,0.40,0.35,0.31mmol/g,respectively.pH was found to have great influence on the adsorption capacity.The adsorption isotherm data obeyed the Langmuir and Freundlich model.The desorption of heavy metal ions from ASA-PGMA/SiO2 was effective while using 0.1mol/L of hydrochloric acid solution as eluent.Consecutive adsorption-desorption experiments showed that ASA-PGMA/SiO2 could be reused almost without any loss in the adsorption capacity. |
| Keywords: | Chelating adsorption Heavy metal ions 5-Aminosalicylic acid Poly(glycidyl methacrylate) Silica gel |
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