title: Two-stage thermal conversion of inedible lipid feedstocks to renewable chemicals and fuels.
abstract: The aim of this work was to study the conversion of inedible, low cost lipid feedstocks to renewable hydrocarbons using a two stage thermal hydrolysis-pyrolysis method. Beef tallow, yellow grease, brown grease and cold pressed camelina oil were first hydrolyzed and the fatty acids produced were recovered and pyrolyzed in batch reactors. The pyrolysis products were identified and quantified using gas chromatography and mass spectrometry. The pyrolysis product yields were similar for all the feedstock used with the organic liquid fraction (OLF) accounting for 76-80% of the product. The OLF consisted predominantly of n-alkanes. Approximately 30% OLF constituted a gasoline-equivalent fraction and 50% a diesel fraction. Other fuel property test showed that the OLF met the specifications set out by the Canadian general standards board. This research demonstrated a novel two-stage thermal hydrolysis-pyrolysis conversion method for producing OLF from inedible and low-value lipids.
authors.affiliation: Biorefining Conversions and Fermentations Laboratory, Department of Agricultural, Food and Nutritional Science, 4-10 Agriculture/Forestry Centre, University of Alberta, Edmonton, AB T6G 2P5, Canada.
authors.forename: Justice
authors.initials: J
authors.lastname: Asomaning
authors.affiliation: Biorefining Conversions and Fermentations Laboratory, Department of Agricultural, Food and Nutritional Science, 4-10 Agriculture/Forestry Centre, University of Alberta, Edmonton, AB T6G 2P5, Canada.
authors.forename: Paolo
authors.initials: P
authors.lastname: Mussone
authors.affiliation: Biorefining Conversions and Fermentations Laboratory, Department of Agricultural, Food and Nutritional Science, 4-10 Agriculture/Forestry Centre, University of Alberta, Edmonton, AB T6G 2P5, Canada. Electronic address: david.bressler@ualberta.ca.
authors.forename: David C
authors.initials: DC
authors.lastname: Bressler
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D006868:Hydrolysis; D008055:Lipids / Q000737:chemistry*
chemical_list: D008055:Lipids
keywords: Biofuel; Fatty acids; Hydrolysis; Inedible oils; Pyrolysis