LIU Lei, REN Jiwei, LIU Xinlu, et al. Study of simultaneous separation of lignosulfonate and xylooligosaccharides from magnesium bisulfite pretreated wheat straw spent liquor[J]. CIESC Journal, 2018, (8): 3678-3685.
LIU Lei, REN Jiwei, LIU Xinlu, et al. Study of simultaneous separation of lignosulfonate and xylooligosaccharides from magnesium bisulfite pretreated wheat straw spent liquor[J]. CIESC Journal, 2018, (8): 3678-3685.DOI: 10.11949/j.issn.0438-1157.20180064.
lignosulfonate and xylooligosaccharides were separated from magnesium bisulfite pretreated wheat straw spent liquor. The results showed that the ultrafiltration cannot achieve the purpose of separation. The magnesium lignosulfonate can be purified by organic solvent extraction and macroporous resin adsorption. D380 ion exchange resin was selected to completely separate xylooligosaccharides and lignosulfonate by ion exchange fixed bed simultaneously
the purity of recovered xylooligosaccharides and lignosulfonate could reach 63.95% and 91.28% respectively. Thus
ion-exchange fixed bed packed with D380 is an effective and simple way to recover high-valued chemicals from spent liquor
which achieved complete utilization of magnesium bisulfite pretreated wheat straw spent liquor with robust market prospects.