| Adsorption of Pb^2＋ on macroporous weak acid adsorbent resin from aqueous solutions： Batch and column studies |
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| 引用本文： | 熊春华,冯宇杰,姚彩萍.Adsorption of Pb^2＋ on macroporous weak acid adsorbent resin from aqueous solutions： Batch and column studies[J].中南工业大学学报(英文版),2009,16(4):569-574. |
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| 作者姓名： | 熊春华 冯宇杰 姚彩萍 |
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| 作者单位： | Department of Applied Chemistry, Zhejiang Gongshang University, Hangzhou 310012, China |
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| 基金项目： | Project（2008F70059） supported by the Scientific and Technological Research Planning of Zhejiang Province, China |
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| 摘 要： |
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| 关 键 词： | 大孔弱酸树脂 树脂吸附 Langmuir模型 批处理 水溶液 铅 饱和吸附容量 热力学参数 |
Adsorption of Pb2+ on macroporous weak acid adsorbent resin from aqueous solutions: Batch and column studies |
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| Chun-hua Xiong, Yu-jie Feng and Cai-ping Yao.Adsorption of Pb2+ on macroporous weak acid adsorbent resin from aqueous solutions: Batch and column studies[J].Journal of Central South University of Technology,2009,16(4):569-574. |
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| Authors: | Chun-hua Xiong Yu-jie Feng and Cai-ping Yao |
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| Affiliation: | (1) Department of Applied Chemistry, Zhejiang Gongshang University, Hangzhou, 310012, China |
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| Abstract: | The adsorption properties of a novel macroporous weak acid resin (D152) for Pb2+ were investigated with chemical methods. The optimal adsorption condition of D152 resin for Pb2+ is at pH 6.00 in HAc-NaAc medium. The statically saturated adsorption capacity is 527 mg/g at 298 K. Pb2+ adsorbed on D152 resin can be eluted with 0.05 mol/L HCl quantitatively. The adsorption rate constants determined under various
temperatures are k
288 K=2.22×10−5 st-1, k
298 K=2.51×10−5 s−1, and k
308 K= 2.95×10−5 s−1, respectively. The apparent activation energy, E
a is 10.5 kJ/mol, and the adsorption parameters of thermodynamics are ΔH
Θ=13.3 kJ/mol, ΔS
Θ=119 J/(mol·K), and ΔG
Θ 298 K =−22.2 kJ/mol, respectively. The adsorption behavior of D152 resin for Pb2+ follows Langmuir model.
Foundation item: Project(2008F70059) supported by the Scientific and Technological Research Planning of Zhejiang Province, China |
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| Keywords: | Pb2+ macroporous weak acid resin adsorption thermodynamics |
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