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Separation of fructose and glucose from date syrup using resin chromatographic method: Experimental data and mathematical modeling

机译：树脂色谱法从大枣糖浆中分离果糖和葡萄糖的实验数据和数学模型

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In this work a series of experiments have been performed to study and simulate the separation of glucose and fructose as the most applicable sugars in the food industry. The objective of this work is understanding and modeling the behavior of these components in a chromatography column when they are introduced to the column as simple components, binary solutions, and also as the major species in date syrup. The column's diameter and height are 3.5 cm and 15 cm respectively, and Purolite PCR642Ca, which is an acidic gel-type cation exchange resin (Ca~(2+)), was used for the separation of sugars. Static method was applied to determine the equilibrium constants, and frontal (dynamic) analysis method was used to determine the mass transfer coefficients at two different temperatures of 30 and 60 °C for single and multi-component mixtures for a solution with a sugar concentration of 70 g/L. The kinetic studies for the prediction of mass transfer coefficients were performed according to the breakthrough curves by a linear driving force approximation (LDF), while the adsorption isotherms were estimated by linear model. Adsorption equilibrium constants and mass transfer coefficients between fructose, glucose and solid resin were determine by optimization procedure. The results of the optimization and parameter estimation for synthetic sugar solutions were also applied for modeling the separation of sugars in date syrup. The predicted results of the real mixtures (date syrup) have a good agreement with the experimental data and show that both sugars can be separated successfully by this method.
机译：在这项工作中，已经进行了一系列实验来研究和模拟葡萄糖和果糖的分离，这是食品工业中最适用的糖。这项工作的目的是理解和建模当色谱柱中的这些组分作为简单组分，二元溶液以及枣糖浆中的主要组分引入色谱柱时的行为。色谱柱的直径和高度分别为3.5 cm和15 cm，使用酸性凝胶型阳离子交换树脂（Ca〜（2+））Purolite PCR642Ca分离糖。采用静态方法确定平衡常数，采用前部（动态）分析方法确定糖分浓度为50％的溶液的单组分和多组分混合物在两种不同温度（30和60°C）下的传质系数。 70克/升。根据穿透曲线，通过线性驱动力近似（LDF）进行动力学研究，以预测传质系数，同时通过线性模型估算吸附等温线。通过优化程序确定了果糖，葡萄糖和固体树脂之间的吸附平衡常数和传质系数。合成糖溶液的优化和参数估计的结果也被用于建模日期糖浆中糖的分离。实际混合物（枣糖浆）的预测结果与实验数据吻合良好，表明该方法可以成功分离出两种糖。

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