title: Increasing algal biofuel production using Nannocholropsis oculata cultivated with anaerobically and aerobically treated swine wastewater.
abstract: For mass production of Nannocholropsis oculata, a cheap nutrition source such as swine wastewater is required. The use of a combination of anaerobically/aerobically treated swine wastewater (AnATSW) was compared to artificial 3×f/2 medium in terms of algal growth rate and oil content. For microalgae cultured in 0-50% (v/v) AnATSW, a biomass of 0.94-3.22 g L(-1) was reached in 5 days. For microalgae cultured in 3×f/2 medium with vitamins, the lipid productivity was 0.122 g L(-1) d(-1) although its oil content reached 48.9%. Culturing N. oculata in 0-50% AnATSW resulted in an optimal lipid productivity of 0.035-0.177 g L(-1) d(-1). Only vitamins improved algal production of more oxidatively stable compositions of unsaturated oils. These oils were similar to the chemical structure of rapeseed oil based on analysis of the bis-allylic-position-equivalent value (30.64-46.13) and the iodine value (90.5-117.46). These oils were similar to coal based on the calculated low-heating-value of 17.6-22.9 MJ/kg.
authors: Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu 310, Taiwan, ROC.
authors: Pei-Fen
authors: PF
authors: Wu
authors: Jui-Chin
authors: JC
authors: Teng
authors: Yun-Huin
authors: YH
authors: Lin
authors: Sz-Chwun John
authors: SC
authors: Hwang
mesh_terms: D000332:Aerobiosis / Q000187:drug effects; D000693:Anaerobiosis / Q000187:drug effects; D000818:Animals; D001673:Biodegradation, Environmental / Q000187:drug effects; D056804:Biofuels / Q000382:microbiology*; D018533:Biomass; D003470:Culture Media / Q000494:pharmacology; D004602:Elements; D005227:Fatty Acids / Q000032:analysis; D006358:Hot Temperature; D058086:Microalgae / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism*; D009584:Nitrogen / Q000494:pharmacology; D009821:Oils / Q000032:analysis; D010758:Phosphorus / Q000494:pharmacology; D013552:Swine; D014280:Triglycerides / Q000032:analysis; D062065:Wastewater / Q000382:microbiology*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D056804:Biofuels; D003470:Culture Media; D004602:Elements; D005227:Fatty Acids; D009584:Nitrogen; D009821:Oils; D010758:Phosphorus; D014280:Triglycerides; D062065:Wastewater; D014874:Water Pollutants, Chemical