| 阴离子交换树脂对磺基水杨酸的吸附解吸性能 |
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| 引用本文： | 谢祖芳,童张法,庞起,陈渊,晏全.阴离子交换树脂对磺基水杨酸的吸附解吸性能[J].化学工程,2009,37(1). |
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| 作者姓名： | 谢祖芳 童张法 庞起 陈渊 晏全 |
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| 作者单位： | 1. 玉林师范学院,化学与生物学系,广西,玉林,537000
2. 广西大学,化学化工学院,广西,南宁,530004 |
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| 基金项目： | 广西教育厅科学研究项目 |
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| 摘 要： | 用阴离子交换树脂(D201)吸附的方法研究了磺基水杨酸的富集及回收。测定了溶液的pH值、温度、吸附时间等因素对吸附的影响,探讨了吸附的热力学和动力学特性。结果表明:D201树脂在pH=2—11时,吸附能力最好,等温吸附服从Freundlich经验式,吸附动力学符合Lagergren一级速率方程,颗粒内扩散是速率控制步骤之一,膜扩散也共同影响着吸附过程。在295—313 K条件下,磺基水杨酸吸附质量分数为380—420 mg/g的吸附焓变为-13.73—-8.422 kJ/mol,自由能变为-19.89—-21.45 kJ/mol,吸附熵变为20.88—41.62 J/(K.mol),吸附速率常数为0.025 3—0.056 5 min-1,吸附活化能为34.04 kJ/mol。315 K下用质量分数10%NaCl+2%NaOH溶液可定量洗脱,洗脱率达99%。
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| 关 键 词： | D201树脂 磺基水杨酸 吸附 热力学 动力学 解吸 |
Adsorption and desorption properties of sulfosalicylic acid on anion exchange resin |
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| XIE Zu-fang,TONG Zhang-fa,PANG Qi,CHEN Yuan,YAN Quan.Adsorption and desorption properties of sulfosalicylic acid on anion exchange resin[J].Chemical Engineering,2009,37(1). |
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| Authors: | XIE Zu-fang TONG Zhang-fa PANG Qi CHEN Yuan YAN Quan |
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| Affiliation: | XIE Zu-fang1,TONG Zhang-fa2,PANG Qi1,CHEN Yuan1,YAN Quan1 |
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| Abstract: | The enrichment and recovery of sulfosalicylic acid by anion exchange resin(D201) adsorption were investigated with the measurement of the related parameters such as pH of solution,temperature and adsorption time,etc.The adsorption kinetics and thermodynamics of amino modified polystyrene were studied.The experimental results show that the maximum adsorption ability of D201 resin can be achieved at pH=2-11;the adsorption behavior of D201 resin for sulfosalicylic acid obeys the Freundlich isotherm;the adsorpt... |
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| Keywords: | D201 resin sulfosalicylic acid adsorption thermodynamics kinetics desorption |
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