Abstract
Rapid industrialization and development demand alternative fuels due to fast depletion of world fossil fuel reserves. Algal biooil could play an important role in the sustainable biodiesel production and it can be used by adding certain fraction in the biodiesel. Addition of butanol in the blending mixture (BM) of biodiesel (BD) and fossil diesel (FD) can increase the calorific value and viscous properties of the fuel. Current work covers the extraction of algal oil followed by BD preparation. Five different BM is prepared from B20But30 (BD-50 %, BD-20 %, But-30 %)containing 0, 25, 50, 75 and 100 ppm TiO2named as B20But30, B20But30TiO2 (25 ppm), B20But30TiO2 (50 ppm), B20But30TiO2 (75 ppm), B20But30TiO2 (100 ppm) respectively. Results states that BTE is increased by 12, 11.06, 9.48, 4.87 and 0.48 % for B20But30TiO2 (100 ppm), B20But30TiO2 (75 ppm), B20But30TiO2 (50 ppm), B20But30TiO2 (25 ppm) and B20But30 respectively in comparison with FD at full load. Exhaust gas temperature was recorded as 201, 203, 205, 208,216 and 220℃ for diesel, B20But30, B20But30TiO2 (25 ppm), B20But30TiO2 (50 ppm), B20But30TiO2 (75 ppm), B20But30TiO2 (100 ppm) respectively at full load. Experimental study show reductions in NOx, CO2 and SOx while increase in HC with TiO2 dose in BM. Thus, biodiesel derived from micro-algae mixed with butanol and titanium oxide seem to be the promising alternative fuels for diesel engine.
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