Comparative Assessment of the Emission Characteristics of First, Second and Third Generation Biodiesels as Fuel in a Diesel Engine

Abstract

The present study aims to investigate emission characteristics with the B20 blend level of first, second and third generation biodiesels. The engine, a naturally aspirated, single cylinder, diesel engine, was operated at 1500 rpm engine speed and at different engine loads with intervals of 25%. Also, the engine is analyzed by Diesel-RK mathematical tool and emission characteristics such as smoke, carbon dioxides (CO2), particulate matter (PM), nitric oxide (NO) and summary of emission (SE) were obtained. Numerical simulation is performed using pure diesel (D100), first, second and third generation B20 (80% diesel + 20% biodiesel). Results of reduction in emissions for biodiesel blend were found to be lower than diesel fuel as smoke (BSN) by 54.68% for jojoba, PM by 4.8% for coconut, 52.0% for jojoba and 7.1% for fish oil, NO by 38.2% for jatropha curcas, and SE by 8.8% for soybean, 12.9% for jatropha curcas and 8.8% for spirulina but carbon dioxides was found to be higher by 0.38% for rapeseed, 0.61% for fish oil. The blend of B20 shows a decrease in emissions at 1500 rpm with 100% engine load. The numerical results are verified against experimental results conducted under the same operating conditions.

Effect of modifying bowl geometry for IC engine fueled with diesel and Biofuels - Review

“…Catalysts were added to speed up the reaction. Other factors that influence the transesterification process include catalyst concentration, the intensity of the mixing process, reaction temperature, reaction time, and feedstock type [20].…”

Investigation of the effects of biofuels on vehicle performance and emissions

“…The reduction in emissions results for the biodiesel blend as smoke from diesel fuel (BSN) 54.68% for jojoba, 4.8% for coconut, 52.0% for jojoba and 7.1% for fish oil, 38.2% for NO jatropha curcas and 8.8% for SE soybeans, It was found to be 12.9% for jatropha curcas and 8.8% for spirulina, but the carbon dioxide was 0.38% higher for rapeseed and 0.61% for fish oil. The mix of B20 shows a reduction in emissions at 1500 rpm with 100% engine load [46]. In this study, the effect of using gasoline-ethanol mixture as fuel on wheel drive power, CO, HC and CO2 emissions of vehicles with electronic ignition system and fuel injection system was investigated.…”

Biodiesel Production Processes with Yeast: A Sustainable Approach

“…First-generation biodiesel produced with edible oils such as rapeseed [4,9,[99][100][101], coconut, and soybean oil [98] reduces particle matter and smoke as the biodiesel percentage in the blend increases. However, CO 2 and NOx emissions tend to increase.…”

“…However, CO 2 and NOx emissions tend to increase. Nevertheless, rapeseed oil has the least impact on CO 2 levels, with an increase of 0.418% and NO levels of 6% when a B20 blend is used [4,101].…”