Wet in situ transesterification of microalgae using ethyl acetate as a co-solvent and reactant
•EtOAC is firstly used as a single reactant and co-solvent for in situ transesterification.•EtOAC hydrolysis yields the EtOH/EtOAC system without using a co-solvent.•EtOAC provides higher FAEE yield and saccharification than EtOH/chloroform.•97.8% FAEE yield occurs at 113.6°C with 4.06M H2SO4 and 6....
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Published in | Bioresource technology Vol. 230; pp. 8 - 14 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
Elsevier Ltd
01.04.2017
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Subjects | |
Online Access | Get full text |
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Summary: | •EtOAC is firstly used as a single reactant and co-solvent for in situ transesterification.•EtOAC hydrolysis yields the EtOH/EtOAC system without using a co-solvent.•EtOAC provides higher FAEE yield and saccharification than EtOH/chloroform.•97.8% FAEE yield occurs at 113.6°C with 4.06M H2SO4 and 6.67ml EtOAC/g dried algae.
This study addresses wet in situ transesterification of microalgae for the production of biodiesel by introducing ethyl acetate as both reactant and co-solvent. Ethyl acetate and acid catalyst are mixed with wet microalgae in one pot and the mixture is heated for simultaneous lipid extraction and transesterification. As a single reactant and co-solvent, ethyl acetate can provide higher FAEE yield and more saccharification of carbohydrates than the case of binary ethanol and chloroform as a reactant and a co-solvent. The optimal yield was 97.8wt% at 114°C and 4.06M catalyst with 6.67mlEtOAC/g dried algae based on experimental results and response surface methodology (RSM). This wet in situ transesterification of microalgae using ethyl acetate doesn’t require an additional co-solvent and it also promises more economic benefit as combining extraction and transesterification in a single process. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0960-8524 1873-2976 |
DOI: | 10.1016/j.biortech.2017.01.027 |