Abstract
At present, a high-temperature steam requirement is the main problem in the recovery of furfural. In this work, D141 macroporous resin was selected to separate and enrich furfural from the hydrolysate, and ethanol was selected as the desorption reagent. The adsorption selectivity of furfural and acetic acid made it possible to obtain acetic acid simultaneously. Adsorption kinetics revealed that the rate was rapid and fitted by a pseudo-second-order model. Then the breakthrough curve and optimal operation conditions were systematically investigated. The optimized process of adsorption was a 3 bed volume (BV) solution loaded on the fixed bed of the D141 resin with a velocity of 1 BV/h, then eluted by 1 BV ethanol with a velocity of 1 BV/h. As a result, 96.97% of final recovery yield of furfural was obtained. Compared with the previous studies, the D141 macroporous resin was found to be more favorable for the adsorption of furfural in the hydrolysate.
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