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柠檬酸色谱分离过程的吸附性质研究 被引量:8

Study of the Adsorption Properties in Chromatographic Separation of the Citric Acid
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摘要 提出了一种通过在分析型柱上测定和模拟不同温度时的柱床空隙率和吸附等温线等热力学性能的变化行为 ,来筛选和研究用于从发酵液中以色谱法分离提纯柠檬酸的固定相结构的方法。 A new method studying the change of thermodynamic properties at different temperatures to screen suitable stationary phases for chromatographic separation of the citric acid (CA) on an analytical column has been developed. The applied method is mainly based on using CA with a series of solute concentrations (0 g/L 250 g/L ) as mobile phase to seriously overpass the unloaded stationary phase to find the breakthrough curves of CA. The adsorption isotherms were calculated from the retention times of breakthrough curve. The bed porosity of column was calculated from the elution time of a peak of the blue dextran as non adsorbed tracer. The stationary phase, which has been selected through this method, for the separation of CA from fermentation broth, showed a very high adsorption capacity for CA, even under very low concentrations, so it can even be used in the separation and purification process of minute amounts of CA. The separation effect of this stationary phase for citric acid can be greatly enhanced through the technique of change of temperature. This new separation process can shorten the old process path, improve the yield of finished products more than 10%, and reduce the cost more than 10%. At the same time, the pollution of the production of citric acid can be reduced. It turned out that this method will play an important role in the synthesis of stationary phase for the separation of citric acid and the study of its structure.
机构地区 无锡轻工大学
出处 《色谱》 CAS CSCD 北大核心 2001年第1期16-20,共5页 Chinese Journal of Chromatography
基金 教育部高校骨干教师资助基金! (批准号 :教科司 [2 0 0 0 6 5 ] ) 轻工总会科技基金! (批准号 :轻科 95 0 6 4)
关键词 色谱 分离 柠檬酸 固定相 热力学性质 柱床空隙率 吸附等温线 发酵法生产 提纯 chromatographic separation citric acid stationary phase thermodynamic property bed porosity adsorption isotherm
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  • 8李忠,叶菊招,叶振华.用固定床和搅拌槽进行吸附(离子交换)柠檬酸的特性研究[J].离子交换与吸附,1992,8(2):97-110. 被引量:7

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