Improved volatile fatty acid and biomethane production from lipid removed microalgal residue (LR mu AR) through pretreatment

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Renewable energy from lipid removed microalgal residues (LR mu ARs) serves as a promising tool for sustainable development of the microalgal biodiesel industry. Hence, in this study, LR mu AR from Ettlia sp. was characterized for its physico-biochemical parameters, and applied to various pretreatment to increase the biodegradability and used in batch experiments for the production of volatile fatty acids (VFA) and biomethane. After various pretreatments, the soluble organic matters were increased at a maximum of 82% in total organic matters in alkali-autoclaved sample. In addition, VFA and methane production was enhanced by 30% and 40% in alkali-sonicated and alkali-autoclaved samples, respectively. Methane heating value was recovered at maximum of 6.6 MJ kg(-1) VS in alkali-autoclaved conditions with comparison to non-pretreated samples. The pretreatment remarkably improved LR mu AR solubilization and enhanced VFA and biomethane production, which holds immense potential to eventually reduce the cost of algal biodiesel.
Publisher
ELSEVIER SCI LTD
Issue Date
2013-12
Language
English
Article Type
Article
Keywords

ANAEROBIC-DIGESTION; BIOGAS PRODUCTION; HYDROLYSIS; BIOETHANOL; BIODIESEL; BIOMASS

Citation

BIORESOURCE TECHNOLOGY, v.149, pp.590 - 594

ISSN
0960-8524
DOI
10.1016/j.biortech.2013.09.123
URI
http://hdl.handle.net/10203/188713
Appears in Collection
CBE-Journal Papers(저널논문)
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