Whole conversion of microalgal biomass into biofuels through successive high-throughput fermentation
메타 데이터
바이오화학분류
바이오플라스틱
플라스틱
바이오정밀화학
용매
화학제품
연료
화장품용 기능성소재
계면활성제⁄증점제
의료용 화학소재
식품첨가제
논문
Whole conversion of microalgal biomass into biofuels through successive high-throughput fermentation
학술지
Chemical engineering journal
저자명
El-Dalatony, Marwa M.; Salama, El-Sayed; Kurade, Mayur B.; Kim, Kyoung-Yeol; Govindwar, Sanjay P.; Kim, Jung Rae; Kwon, Eilhann E.; Min, Booki; Jang, Min; Oh, Sang-Eun; Chang, Soon Woong; Jeon, Byong-Hun
초록
<P><B>Abstract</B></P> <P>Microalgae represent a promising feedstock for biofuel production. However, the energy efficiency of microalgal pretreatment and conversion technologies needs to be improved to meet the economic viability. Herein, we introduce a novel integrated approach to achieve unprecedented energy conversion efficiency (46%) of microalgal biomass (<I>Chlamydomonas mexicana</I>). A successive high-throughput fermentation followed by transesterification were employed. This process provided a platform for maximum recovery of energy carriers from biomass utilization (89%). Serial fermentations were implemented for thorough utilization of the biomass constituents, starting with carbohydrate, followed by protein to derive ethanol (C2) and higher alcohols (C3–C5), respectively. Lipid was the dominant component after the previous fermentation, which was converted to biodiesel via transesterification process. Successive fermentations served as a bio-pretreatment to enhance the bioavailability of the leftover protein and lipid, which minimized the use of expensive and laborious methods for their extraction from the microalgal biomass. The proposed serial fermentation process would maximize the utilization of biomasses for biofuel production, with minimum leftover (11%).</P> <P><B>Highlights</B></P> <P> <UL> <LI> High throughput fermentations achieved 46% energy recovery from microalgae. </LI> <LI> Successive fermentations served as a biopretreatment to enhance the accessibility. </LI> <LI> 89% of biomass was converted into biofuels with less production of waste. </LI> <LI> Fermentation of the leftover protein produced 0.37 g-higher alcohols/g-amino acids. </LI> <LI> Transesterification of the remaining lipids produced 0.5 g-biodiesel/g-fatty acids. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>