TY - JOUR
T1 - Production of microbial lipids utilizing volatile fatty acids derived from wastepaper
T2 - A biorefinery approach for biodiesel production
AU - Annamalai, Neelamegam
AU - Sivakumar, Nallusamy
AU - Fernandez-Castane, Alfred
AU - Oleskowicz-Popiel, Piotr
N1 - Publisher Copyright:
© 2020
PY - 2020/9/15
Y1 - 2020/9/15
N2 - 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.
AB - 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.
KW - Anaerobic open culture fermentation
KW - Biodiesel
KW - Microbial lipids
KW - Oleaginous yeast
KW - Volatile fatty acids
KW - Wastepaper
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U2 - 10.1016/j.fuel.2020.118087
DO - 10.1016/j.fuel.2020.118087
M3 - Article
AN - SCOPUS:85084987569
SN - 0016-2361
VL - 276
JO - Fuel
JF - Fuel
M1 - 118087
ER -