Journal
BIORESOURCE TECHNOLOGY
Volume 127, Issue -, Pages 59-65Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.10.031
Keywords
Pre-hydrolysis liquor; Kraft-based dissolving pulp; Combined process; Dissolved organics; Biorefinery
Funding
- NSERC CRD Grant
- Canada Research Chairs program of the Government of Canada
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To recover dissolved organics in pre-hydrolysis liquor (PHL) of the kraft-based dissolving pulp production process, a new combined process concept of sequential steps of activated carbon adsorption, ion exchange resin treatment, and membrane concentration, was proposed. The removal of lignin in the PHI was achieved in the activated carbon adsorption step, which also facilitates the subsequent operations, such as the membrane filtration and ion exchange resin treatment. The ion exchange resin treatment resulted in the removal/concentration of acetic acid, which opens the door for acetic acid recovery. The membrane filtration is to recover/concentrate the dissolved sugars. The combined process resulted in the production of PHL-based concentrate with relatively high concentration of hemicellulosic sugars, i.e., (C) 2012 Elsevier Ltd. All rights reserved.
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