Recovery of Acetoin from the Ethanol鈥揂cetoin鈥揂cetic Acid Ternary Mixture Based on Adsorption Methodology Using a Hyper-Cross-Linked Resin

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• 作者：Jinglan Wu ; Xu Ke ; Lili Wang ; Renjie Li ; Xudong Zhang ; Pengfei Jiao ; Wei Zhuang ; Yong Chen ; Hanjie Ying
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：August 6, 2014
• 年：2014
• 卷：53
• 期：31
• 页码：12411-12419
• 全文大小：384K
• ISSN：1520-5045

文摘

The separation performances, in terms of adsorption selectivity, desorption, and regeneration of an innovative hyper-cross-linked resin (HD-02) for recovery of acetoin from the ethanol鈥揳cetoin鈥揳cetic acid ternary mixture were explored in this work. The competitive adsorption behaviors of the ternary mixture were determined experimentally. The results showed the HD-02 resin had a good adsorption selectivity toward acetoin over acetic acid and ethanol. Subsequently, the desorption behaviors in terms of desorption isotherms and kinetics were systematically investigated. Using ethanol as a desorbent, the recovery could be achieved as high as 98% in the batch desorption experiments. The Fick model was adopted to simulate the desorption process. The simulation results revealed that the intraparticle diffusion was the rate-limiting step and the obtained effective diffusivities (1.530 脳 10^鈥? m²/min) were independent of the acetoin concentrations. In the end of this work, three cycles of adsorption鈥揹esorption鈥搑egeneration operations confirmed good reproducibility of the resin for the attainment of acetoin.