期刊
BIORESOURCE TECHNOLOGY
卷 317, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.124026
关键词
Microalgae; Biodiesel; Ionic liquid; Fermentation; Succinic acid
资金
- Russian Science Foundation [17-73-30032]
- Russian Science Foundation [17-73-30032] Funding Source: Russian Science Foundation
In this study, a combined approach to produce fatty acid methyl esters (FAMEs) and succinic acid from the biomass of the microalga Micractinium sp. IC-44 using ionic liquids (ILs) was presented. After 22 days of cultivation, the biomass productivity was 0.034 +/- 0.001 g L(-1)day(-1), and the lipid content was 11.5 +/- 0.5%. Direct biomass transesterification using H2SO4 in the presence of IL [BMIM] [HSO4] resulted in a FAME yield of 42.0 +/- 4.3%, which exceeded the yields obtained after transesterification of extracted lipids (20.5 +/- 3.5% using ILs and 27.1 +/- 2.4% using methanol/chloroform) and direct biomass transesterification without using ILs (31.6 +/- 1.7%). The residual biomass obtained after direct transesterification using ILs was subjected to acid hydrolysis (sugar yield was 81.1 +/- 2.4%). The purified hydrolysate was fermented using Actinobacillus succinogenes 130Z to obtain a succinic acid yield of 0.67 g g(-1) of fermentable sugars. Therefore, this study demonstrated the successful conversion of the Micractinium sp. IC-44 biomass into biodiesel and succinic acid.
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