Patent ID: 9133229
Filing Date: 2015-09-15
Classification: B01D,C07H,C13B,C13K

Abstract:
1. A process for producing xylose by hydrolyzing tropical fruit biomass with sulfuric acid, the process comprising the steps of: a) countercurrently extracting tropical fruit biomass by hydrolysis with sulfuric acid to obtain an extract; b) adjusting the extract to a pH of 1.5-2.5 and decolorizing and filtering the pH-adjusted extract to obtain a filtrate; c) desalting the filtrate in an electrodialysis device; and d) recycling a waste sulfuric acid solution recovered from step c), to step a), and concentrating and directly recovering the desalted organic material to obtain xylose crystals, wherein the process does not comprise a step of precipitation, neutralization and ion-exchange.