Biodiesel extracted from Scenedesmus obliquus algae through transesterification was used in the current study. Due to the disadvantages of using pure biodiesel in engines, it was used as B50 (a blend of 50% diesel and 50% biodiesel). To enhance engine performance, n-pentane was used in different extents of 5, 10, and 15 ml per liter as an enhancer additive. Through performance tests, it was found that 15 ml of n-pentane per liter was the best addition as it caused an increase in the brake thermal efficiency of 7.1% and a decrease in brake specific fuel consumption of 6.4% compared to the elegant B50. Whereas for exhaust gases, there was an increase in nitrogen oxides, which was associated with the significant increase in exhaust temperature and the high oxygen content present in B50. In comparison, hydrocarbons emission decreased by 7.2% compared to B50 in contrast to carbon dioxide which increased by 22.3% over B50. The carbon monoxide and oxygen concentrations of the exhaust gases also decreased by 17.35% and 9.5%, respectively compared to B50. The results obtained indicated that there are a significant improvements in pressure evolution and heat release data, which depend on the role of the mixed fuel addition of n-pentane.

Study of performance, combustion, and emissions parameters of DI-diesel engine fueled with algae biodiesel/diesel/n-pentane blends

In this experimental investigation, Kariba weed biodiesel (KSB) blended with n-pentane has been tested in conventional and ceramic-coated thermal barrier engines, and the results have been compiled and presented. A single-cylinder, four-stroke, direct injection diesel engine has been used as the test engine with eddy current dynamometer loading as used in the experimental setup. The tests were repeated in various ambient conditions to get an optimal value. Ceramic coating has been done with partially stabilized zirconia by the plasma arc spraying process. Among the quantum of tests conducted, 90% KSB blended with 10% n-pentane showed appreciable results when it was compared with the test fuel (neat diesel). The brake thermal efficiency and brake-specific fuel consumption were found to be better when compared with neat diesel. At increasing load, unburnt hydrocarbon, carbon monoxide, and smoke opacity emissions were appreciably reduced.

Effect of Kariba Weed Biodiesel Blended with n-Pentane on the Chosen Parameters of a Ceramic-Coated Thermal Barrier Direct Injection Diesel Engine

Estudo químico das folhas de Piper fuligineum e P. macedoi por espectrometria de massas combinadas às redes moleculares e avaliação in silico da inibição da Mpro de SARS-CoV-2

Abstract The production and utilization of biodiesel derived from microalgae have gained significant attention as a sustainable alternative to fossil fuels. However, the intrinsic properties of microalgae biodiesel can limit its performance and lead to undesirable emissions. This paper summarizes the impact of additives on microalgae biodiesel, focusing on their influence on performance and emissions. Additives play a crucial role in improving the overall quality and efficiency of microalgae biodiesel. They encompass a range of compounds, including antioxidants, stabilizers, and combustion enhancers. These additives have been studied extensively to elucidate their effects on fuel properties, engine performance, and exhaust emissions. By modifying the physicochemical properties of microalgae biodiesel, additives can enhance its stability, cetane number, and oxidative resistance, thereby promoting efficient combustion and reducing emissions of harmful pollutants. This review concludes that the usage of additives to the algae biodiesel leads to improved combustion performance and emission reduction. 

A Comprehensive Review of the Effect of Additives on Microalgae Biodiesel Performance and Emissions

Microalgae from the Three Gorges Reservoir for Carbon Dioxide Fixation and Biodiesel Production

In this work, the biodiesel has been extracted from an algae species called Chlorella vulgaris through transesterification process. Here a biodiesel blend of B25 (75% diesel and 25% biodiesel) with...

Experimental investigation on a diesel engine fuelled by algae methyl ester with additives

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Experimental investigation on a diesel engine fuelled by algae methyl ester with additives