Lipids extraction from wet Chlorella pyrenoidosa sludge using recycled [BMIM]Cl. (November 2019)

• Record Type: Journal Article
• Authors: Lu, Haitao; Yu, Xinhai; Li, Hailong; Tu, Shan-Tung; Sebastian, Schwede
• Is Part Of: Bioresource technology. Volume 291(2019)
• Publication Date: 2019-11
• Subjects: Microalgae -- Ionic liquid -- Wet extraction -- Energy consumption -- Recycling; 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.2019.121819
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: The average lipid yield extracted from Chlorella pyrenoidosa was 89.3% using recycled [BMIM]Cl. Five times antisolvent precipitation of debris recovered 99.8% [BMIM]Cl with energy consumption of 4.46 MJ. The [BMIM]Cl loss was below 1.97 g per kg dry Chlorella pyrenoidosa for microalgae pretreatment. Abstract: In this study, experiments on pretreating one species of microalgae ( Chlorella pyrenoidosa ) using one kind of ionic liquid (IL) of [BMIM]Cl were conducted. The aim of this work is to evaluate the recycling efficacy of expensive IL solvent for effective cell disruption. It was indicated that the molecular structure of IL was stable during the recycling test. Five times antisolvent precipitation of microalgae debris after lipid extraction using methanol recovered 99.8% IL with the energy consumption of 4.46 MJ per kg dry Chlorella pyrenoidosa . The chromatography was used to separate IL and hydrolysates, resulting in the IL loss below 1.97 g per kg dry Chlorella pyrenoidosa .