Wet in situ transesterification of microalgae using ethyl acetate as a co-solvent and reactant. (April 2017)

• Record Type: Journal Article
• Authors: Park, Jeongseok; Kim, Bora; Chang, Yong Keun; Lee, Jae W.
• Is Part Of: Bioresource technology. Volume 230(2017)
• Page Start: 8
• Page End: 14
• Publication Date: 2017-04
• Subjects: Biodiesel -- Microalgae -- Wet in situ transesterification -- Ethyl acetate -- Response surface methodology; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2017.01.027
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: 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 4.06 M H2 SO4 and 6.67 ml EtOAC/g dried algae. Abstract: 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 97.8 wt% at 114 °C and 4.06 M catalyst with 6.67 ml EtOAC/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.