title: Removal of inhibitors from pre-hydrolysis liquor of kraft-based dissolving pulp production process using adsorption and flocculation processes.
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.
authors.affiliation: Department of Chemical Engineering and Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, NB, Canada E3B 5A3.
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.forename: Pedram
authors.initials: P
authors.lastname: Fatehi
authors.forename: Yonghao
authors.initials: Y
authors.lastname: Ni
mesh_terms: D000327:Adsorption; D001709:Biotechnology / Q000379:methods*; D002606:Charcoal; D005427:Flocculation; D005662:Furaldehyde / Q000302:isolation & purification; D006868:Hydrolysis; D008031:Lignin / Q000302:isolation & purification; D010084:Oxidation-Reduction; D010209:Paper; D011095:Polyethylenes / Q000737:chemistry; D011134:Polysaccharides / Q000302:isolation & purification; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D012995:Solubility; D013696:Temperature
chemical_list: D011095:Polyethylenes; D011134:Polysaccharides; D000644:Quaternary Ammonium Compounds; C036909:lignocellulose; D002606:Charcoal; C041004:poly-N,N-dimethyl-N,N-diallylammonium chloride; C007916:hemicellulose; D008031:Lignin; D005662:Furaldehyde