Microalgae Oil: Algae Cultivation and Harvest, Algae Residue Torrefaction and Diesel Engine Emissions Tests

摘要: Microalgae can be used as a biological photocatalyst to reduce the CO2 levels in atmosphere, with advantage of not competing food crops for arable land, and thus offer potential method limiting climate change. have also been proposed sustainable fuel source. This study investigated microalgae harvest yields, thermogravimetric behavior both oil residue, torrefaction diesel engine tests using diesel-microalgae biodiesel blends. The mean annual rate open ponds was found 4355 kg per 10000 m 2 . Compared conventional diesel, blends - B2 (2% + 98% diesel), B2-But20 (B2 20% Butanol) B2-But20-W0.5 (B2-But20 0.5% water) showed reduction 22.0%, 57.2%, 59.5% PM emissions, decrease 17.7%, 31.4% 40.7% BaPeq while had reduced NOx approximately 25.0% 28.2%, respectively, but 2.0% increase emissions. Conversely, addition water butanol fractions increases HC CO although these easily removed tailpipe catalysts absorbers. In addition, residue results solid, liquid gas products. is first its kind report compositions from residue. condensate products contained glucose molecules like 1,4:3,6-Dianhydro-α-d-glucopyranose, furfural, limonene, pyridine, levoglucosan, aziridine, among others. These compounds utilized value added products, applied specialty industries pharmaceutical, cosmetic, or solvent raw materials. Briefly, only benefits reducing atmosphere providing materials production, treated via produce biochar. Based on this study, more research recommended economic solid torrefaction.