Synthesis of fatty acid methyl esters via direct transesterification with methanol/carbon dioxide mixtures from spent coffee grounds feedstock

Calixto, Filipe and Fernandes, Joao and Couto, Ricardo and Hernandez, Elvis J. and Najdanovic-Visak, Vesna and Simoes, Pedro C. and Najdanovic-Visak, Vesna (2011) Synthesis of fatty acid methyl esters via direct transesterification with methanol/carbon dioxide mixtures from spent coffee grounds feedstock. Green Chemistry, 13 (5). pp. 1196-1202. ISSN 1463-9262

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Abstract

The feasibility of in situ extraction and transesterification of spent coffee ground oil into fatty acid methyl esters with supercritical methanol has been investigated in the temperature range 473-603 K, and in the pressure range 10.0-30.0 MPa. At 30.0 MPa and 603 K, a fatty acid methyl esters (FAME) yield of 84.9% was obtained. Carbon dioxide was added to methanol with the aim of reducing the operating temperature and pressure. It was demonstrated that at a reaction temperature of 573 K, pressure of 10.0 MPa and a CO(2)/MeOH molar ratio of 0.11, a FAME yield of 93.4% was obtained.

Item Type:
Journal Article
Journal or Publication Title:
Green Chemistry
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2310
Subjects:
ID Code:
63076
Deposited By:
Deposited On:
22 Mar 2013 09:24
Refereed?:
Yes
Published?:
Published
Last Modified:
06 May 2020 02:38