title: Dilute phosphoric acid-catalysed hydrolysis of municipal bio-waste wood shavings using autoclave parr reactor system.
abstract: The visibility of using municipal bio-waste, wood shavings, as a potential feedstock for ethanol production was investigated. Dilute acid hydrolysis of wood shavings with H₃PO₄ was undertaken in autoclave parr reactor. A combined severity factor (CSF) was used to integrate the effects of hydrolysis times, temperature and acid concentration into a single variable. Xylose concentration reached a maximum value of 17 g/100 g dry mass corresponding to a yield of 100% at the best identified conditions of 2.5 wt.% H₃PO₄, 175 °C and 10 min reaction time corresponding to a CSF of 1.9. However, for glucose, an average yield of 30% was obtained at 5 wt.% H₃PO₄, 200 °C and 10 min. Xylose production increased with increasing temperature and acid concentration, but its transformation to the degradation product furfural was also catalysed by those factors. The maximum furfural formed was 3 g/100 g dry mass, corresponding to the 24% yield.
authors.affiliation: School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT95AG, Northern Ireland, UK. a.orozco@qub.ac.uk
authors.forename: Angela M
authors.initials: AM
authors.lastname: Orozco
authors.forename: Ala'a H
authors.initials: AH
authors.lastname: Al-Muhtaseb
authors.forename: Ahmad B
authors.initials: AB
authors.lastname: Albadarin
authors.forename: David
authors.initials: D
authors.lastname: Rooney
authors.forename: Gavin M
authors.initials: GM
authors.lastname: Walker
authors.forename: Mohammad N M
authors.initials: MN
authors.lastname: Ahmad
mesh_terms: D001709:Biotechnology / Q000379:methods*; D002384:Catalysis; D002482:Cellulose / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid; D000431:Ethanol / Q000378:metabolism; D006868:Hydrolysis; D010756:Phosphoric Acids / Q000378:metabolism*; D011134:Polysaccharides / Q000378:metabolism; D012037:Refuse Disposal / Q000379:methods*; D013696:Temperature; D014934:Wood; D014994:Xylose / Q000096:biosynthesis*
chemical_list: D010756:Phosphoric Acids; D011134:Polysaccharides; D000431:Ethanol; C007916:hemicellulose; D002482:Cellulose; D014994:Xylose; C030242:phosphoric acid