Removal of inhibitors from pre-hydrolysis liquor of kraft-based dissolving pulp production process using adsorption and flocculation processes

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2012 English Publisher:Elsevier BVJournal:Bioresource Technology, volume 116, pages 492-496 (issn: 0960-8524,

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Authors: Xin, Liu; Pedram, Fatehi; Yonghao, Ni;

doi: 10.1016/j.biortech.2012.03.069

pmid: 22595100

Removal of inhibitors from pre-hydrolysis liquor of kraft-based dissolving pulp production process using adsorption and flocculation processes

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Abstract

A process for removing inhibitors from pre-hydrolysis liquor (PHL) of a kraft-based dissolving pulp production process by adsorption and flocculation, and the characteristics of this process were studied. In this process, industrially produced PHL was treated with unmodified and oxidized activated carbon as an absorbent and polydiallyldimethylammonium chloride (PDADMAC) as a flocculant. The overall removal of lignin and furfural in the developed process was 83.3% and 100%, respectively, while that of hemicelluloses was 32.7%. These results confirmed that the developed process can remove inhibitors from PHL prior to producing value-added products, e.g. ethanol and xylitol via fermentation.

Related Organizations

University of New Brunswick
Canada
Lakehead University
Canada

Keywords

Paper, Hydrolysis, Temperature, Flocculation, Lignin, Quaternary Ammonium Compounds, Solubility, Polysaccharides, Charcoal, Furaldehyde, Adsorption, Polyethylenes, Oxidation-Reduction, Biotechnology

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