Abstract：
:The low cost biosynthesis of microbial lipids are an efficient feedstock to replace plant based oil for biodiesel production. The present study objective is to explore the effect of thermo-chemo-sonic pre-digestion of municipal Waste Activated Sludge (WAS) to cultivate oleaginous L. starkeyi MTCC-1400 as a model organism to produce high yield biomass and lipid. Higher Suspended Solids (SS) reduction (20 and 15.71%) and Chemical Oxygen Demand (COD) solubilization (27.6 and 22.3%) were achieved at a Specific Energy (SE) input of 5569 kJ/kg for WAS digested with NaOH and KOH, respectively. The maximum biomass of 17.52 g L-1 and lipid 64.3% dwt were attained in NaOH pre-digested sample. The analyzed lipid profile exhibited high content of palmitic acid (45.6%) and oleic acid (38.7%) which are more suitable for biofuel production. Thus, these results strongly motivate the use of pre-digested WAS as an efficient and economical substrate for biodiesel production.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Selvakumar P,Sivashanmugam Pdoi
10.1016/j.jenvman.2017.04.064subject
Has Abstractpub_date
2017-08-01 00:00:00pages
90-98issue
Pt 1eissn
0301-4797issn
1095-8630pii
S0301-4797(17)30412-7journal_volume
198pub_type
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