2019 AIChE Annual Meeting

(377k) Successful Recovery and Concentration of 5-Hydroxymethylfurfural from Aqueous Solutions Onto Various Polymeric Adsorbent with Different Functional Groups

Authors

Lin, X. - Presenter, Guangdong University of Technology
Zheng, J., Guangdong University of Technology
Zheng, X., Guangdong University of Technology
Liu, Y., Guangdong University of Technology
Xiao, J., Guangdong University of Technology
He, X., Guangdong University of Technology
Chen, Z., Guangdong University of Technology
Pan, B., Guangdong University of Technology
5-hydroxymethylfurfural (5-HMF) is a high value-added platform chemical that can be obtained from glucose, fructose, and directly biomass via chemical catalysis technology or biorefinery. Although a great deal of research about 5-HMF has been published in the past decade, the effective separation and purification of 5-HMF is still a drawback for its sustainable utilization for producing other high value-added chemicals on a commercial scale. In order to address the drawback, chromatographic adsorption separation technology has received more attention for the selective liquid adsorption of 5-HMF from aqueous solution or actual biomass hydrolysate in recent years.

Here, we investigate the separation behavior of glucose, 5-HMF and its follow-up products LA and FA from aqueous solutions onto various polymeric adsorbent with different functional groups (XAD-4, XAD7HP and XAD761 resins). The result showed that XAD761 resin exhibit highest selectivity and capacity for 5-HMF. The maximum adsorption capacity of 5-HMF onto XAD761 was 92.2 mg g-1 wet resin at 288 K. The adsorption equilibrium was better fitted by the Freundlich isotherm model at the studied range of 5-HMF concentrations. The adsorption process of XAD761 resin for 5-HMF was the spontaneous and exothermic, and the activation energy suggested physical nature of the adsorption process. The kinetic regression results showed that the kinetic data of 5-HMF was accurately followed by the pseudo-second-order kinetic model. In conclusion, the present adsorption studies of 5-HMF onto XAD761 resin revealed the potential of phenol-formaldehyde resin with hydroxy group to be applied as an adsorbent for aldehydes organic compounds.