Desorption of 1-butanol from polymeric resin: experimental studies and mathematical modeling. Issue 127 (14th December 2015)

• Record Type: Journal Article
• Authors: Jiao, Pengfei; Wu, Jinglan; Ji, Yingchun; Ke, Xu; Zou, Fengxia; Zhou, Jingwei; Zhuang, Wei; Ying, Hanjie
• Is Part Of: RSC advances. Volume 5:Issue 127(2015)
• Page Start: 105464
• Page End: 105474
• Publication Date: 2015-12-14
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra21986h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Modeling of desorption kinetics and dynamic desorption process of 1-butanol from a polymeric resin. Abstract : Desorption is essential to design an integrated recovery process for 1-butanol, a potential biofuel. The modeling of desorption processes is a significant tool to optimize the separation process of 1-butanol. In this work, we systematically studied the desorption of 1-butanol from a porous polymeric resin KA-I by solvent desorption technique. The desorption equilibrium, desorption kinetics and dynamic desorption behaviors were studied experimentally and simulated theoretically. About 1.5 bed volumes of absolute ethanol could desorb 1-butanol completely with 73.6 g L −1 1-butanol in the effluent in the fixed bed system. A pore diffusion model was used to fit the desorption kinetics of 1-butanol satisfactorily. The concentration evolution of eluent and 1-butanol in the resin pore was simulated. During desorption, the concentration of 1-butanol in the resin pore increases gradually at first, and then decreases gradually due to the slower pore diffusion. Moreover, a general rate model was used to predict the dynamic desorption profiles of 1-butanol under different operating conditions successfully. Finally, repeated adsorption and desorption dynamic cycles were predicted by the general rate model quite well.