Production of microbial lipids utilizing volatile fatty acids derived from wastepaper: A biorefinery approach for biodiesel production

FUEL

卷:276

Article

Annamalai, Neelamegam^1,2  Sivakumar, Nallusamy²  Fernandez-Castane, Alfred^3,4  Oleskowicz-Popiel, Piotr⁵ 

[1] Univ Hawaii Manoa, Hawaii Nat Energy Inst, 1680 East West Rd, Honolulu, HI 96822 USA

[2] Sultan Qaboos Univ, Coll Sci, Dept Biol, POB 36, Muscat 123, Oman

[3] Aston Univ, Aston Inst Mat Res, Birmingham B4 7ET, W Midlands, England

[4] Aston Univ, Energy & Bioprod Res Inst, Birmingham B4 7ET, W Midlands, England

[5] Poznan Univ Tech, Fac Environm Engn & Energy, Water Supply & Bioecon Div, Berdychowo 4, PL-60965 Poznan, Poland

关键词: Biodiesel;    Volatile fatty acids;    Wastepaper;    Anaerobic open culture fermentation;    Oleaginous yeast;    Microbial lipids;   

DOI  :  10.1016/j.fuel.2020.118087

来源: Elsevier

【 摘 要 】

Volatile fatty acids (VFAs) derived from organic wastes are being considered as low-cost feedstock for microbial lipid production as a valuable alternative to plant derived oils/biodiesel. In this study, VFAs were produced from anaerobic open culture fermentation of wastepaper and subsequently, used as a feedstock for lipid production by Cryptococcus curvatus. Total VFAs, yield and productivity achieved from waste office paper (WOP) and waste newspaper (WNP) were 17.3 and 10.2 g/L, 0.17 and 0.10 g/g TS, and 0.86 and 0.51 g/L/day, respectively. Biomass, lipid content and productivity achieved utilizing VFAs derived from WOP and WNP were 4.3 and 2.9 g/L, 41.2 and 27.7% DCW, and 0.037 and 0.033 g/L/h, respectively. The dominance of fatty acids such as oleic, palmitic, stearic and linoleic acid in the lipids suggests a high level of similarity with plant/vegetable oils used for biodiesel production. Therefore, VFAs derived from wastepaper could be potentially used as feedstock to produce microbial lipids towards cost-effective production of biodiesel.

【 授权许可】

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