Abstract：
:The objective of this study was to investigate the feasibility of applying volatile fatty acids (VFAs) produced from low-cost organic waste to the major carbon sources of microalgae cultivation for highly efficient biofuel production. An integrated process that consists of a sewage sludge fermentation system producing VFAs (SSFV) and mixotrophic cultivation of Chlorella vulgaris (C. vulgaris) was operated to produce microbial lipids economically. The effluents from the SSFV diluted to different concentrations at the level of 100%, 50%, and 15% were prepared for the C. vulgaris cultivation and the highest biomass productivity (433±11.9 mg/L/d) was achieved in the 100% culture controlling pH at 7.0. The harvested biomass included lipid contents ranging from 12.87% to 20.01% under the three different effluent concentrations with and without pH control. The composition of fatty acids from C. vulgaris grown on the effluents from the SSFV complied with the requirements of high-quality biodiesel. These results demonstrated that VFAs produced from the SSFV are favorable carbon sources for cultivating C. vulgaris.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Cho HU,Kim YM,Choi YN,Xu X,Shin DY,Park JMdoi
10.1016/j.biortech.2014.09.069subject
Has Abstractpub_date
2015-05-01 00:00:00pages
245-250eissn
0960-8524issn
1873-2976pii
S0960-8524(14)01328-5journal_volume
184pub_type
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