| 聚乙烯吡啶树脂吸附乳酸的研究 |
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| 引用本文： | 谢红梅,祖丕贵.聚乙烯吡啶树脂吸附乳酸的研究[J].高校化学工程学报,1993,7(3):228-234. |
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| 作者姓名： | 谢红梅 祖丕贵 |
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| 作者单位： | 浙江大学化工系
(谢红梅，祖丕贵)，浙江大学化工系(吴平东) |
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| 摘 要： | 本文系统地研究了乳酸在聚乙烯毗啶(PVP)树脂上的吸附和解吸特性。测定了乳酸在PVP树脂上的吸附动力学曲线和吸附等温线,研究了温度、无机盐浓度及液相pH值等因素对乳酸在PVP树脂上的吸附特性的影响。用动态实验比较了不同有机溶剂的洗脱性能。选择甲醇作解吸剂,考察了乳酸进液浓度、流速、床层的初始状态等因素对乳酸在PVP树脂柱中的动态吸附及解吸特性的影响,并对动态吸附过程进行了数学模拟。
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| 关 键 词： | 聚乙烯吡啶 树脂 解吸 吸附 乳酸 |
Adsorption of Lactic Acid on Polyvinylpyridine |
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| Xie Hongmei Zu Pigui Wu Pingdong.Adsorption of Lactic Acid on Polyvinylpyridine[J].Journal of Chemical Engineering of Chinese Universities,1993,7(3):228-234. |
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| Authors: | Xie Hongmei Zu Pigui Wu Pingdong |
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| Abstract: | The characteristics of the adsorption and desorption of lactic acid on polyvinylpyridine (PVP) resins were studied. The kinetic curves and the adsorption isotherms of lactic acid on G5 resin (with 5 mol% DVB) were determined. The effect of temperature, inorganic salts and the pH on the adsorption equilibrium characteristics were studied.
The adsorption dynamics of lactic acid on G5 resin in fixed bed were studied. The elution performance showed that methanol was a good eluent. The effect of initial state of bed, feed concentration and flow rate on the adsorption dynamics were investigated. The adsorption processes were simulated by mathematical model. The results indicated that in the range of the determined flowrates mass transfer rate was controlled by intraparticle diffusion. |
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| Keywords: | Polyvinylpyridine resin Lactic acid Adsorption and desorption characteristics |
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