Novel Scenedesmus obliquus algae biofuel emission and performance characterise in Si-DLC coated diesel engine

Abstract

Investigation of the viability of providing biodiesel made from the algae Scenedesmus obliquus in a compression ignition (CI) engine. This research suggests Scenedesmus slick biodiesel (SOBD) as a possible source of energy, as it is found widely in marine, freshwater and aquaculture communities worldwide. SOBD was mixed with neat diesel fossil fuel at multiple volume ratios of 20 %, 30 %, 40 %, and its properties as a biofuel were analyzed according to ASTM standards. The characteristics study towards combustion, performance and emission of biofuel were analyzed by testing it on a single cylinder diesel engine at a 1500 rpm rated speed. The outcomes of the tests reveal that the efficiency of B20 (20 %SOBD + 80 % diesel) blend is comparable to pure diesel thermal efficiency, smoke, hydrocarbons and carbon monoxide. Still, the SOBD blend caused somewhat increased emissions of carbon dioxide and nitrogen oxides. At 100 % load, SOBD when compared with diesel achieves relatively lower cylinder pressures and lower heat release rates. In general, it is possible to deduce that the B20 blend (20 % SOBD 80 % diesel) will be a favourable feedstock variety that will be employed in unaltered combustion engines with minimal exhaust emissions.