Abstract:
:A two-stage membrane process for the separation of galactose, 5-hydroxymethylfurfural (5-HMF) and levulinic acid (LA) has been proposed. The first step of nanofiltration (NF) is to remove 5-HMF and LA from galactose solution obtained by the hydrolysis of agarose, the main component of red algal galactan for the reduction of its microbial toxicity. 5-HMF and LA are inhibitory to fermentation but at the same time useful compounds themselves with many applications. The second step of electrodialysis (ED) is to separate 5-HMF and LA in the permeate from NF. More than 91% of 5-HMF and up to 62% of LA could be removed from agarose hydrolysate, while galactose was almost completely retained by NF. Further removal of LA was expected to be possible with no loss of galactose by operating the NF process in a diafiltration mode. 5-HMF and LA could be effectively separated from each other by ED.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Kim JH,Na JG,Yang JW,Chang YKdoi
10.1016/j.biortech.2013.04.068subject
Has Abstractpub_date
2013-07-01 00:00:00pages
64-72eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00691-3journal_volume
140pub_type
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