Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Synthesis of fatty acid methyl esters via direct transesterification with methanol/carbon dioxide mixtures from spent coffee grounds feedstock
AU - Calixto, Filipe
AU - Fernandes, Joao
AU - Couto, Ricardo
AU - Hernandez, Elvis J.
AU - Najdanovic-Visak, Vesna
AU - Simoes, Pedro C.
AU - Najdanovic-Visak, Vesna
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - SUPERCRITICAL METHANOL
KW - FUEL
KW - PHASE-EQUILIBRIA
KW - VAPOR-LIQUID-EQUILIBRIA
KW - COSOLVENTS
KW - VEGETABLE-OILS
KW - RAPESEED OIL
KW - BIODIESEL PRODUCTION
KW - SOYBEAN OIL
KW - TRIGLYCERIDES
U2 - 10.1039/c1gc15101k
DO - 10.1039/c1gc15101k
M3 - Journal article
VL - 13
SP - 1196
EP - 1202
JO - Green Chemistry
JF - Green Chemistry
SN - 1463-9262
IS - 5
ER -