<p>An Experimental Study on the Influence of Antioxidant on Nitrous Oxide Emission in Compression Ignition Engine Utilizing Kenaf Biodiesel Blends</p>

Biodiesel is considered as a prominent replacement for fossil fuels. In spite of its advantages, feedstock cost and competition with the food chain are said to be the main drawbacks. The present investigation focuses on identifying a feedstock that does not compete with the food chain. Common second-generation feedstocks are suggested to be a prominent source for biodiesel production as they involve the use of trash seeds. Moreover, the oil recovered from such seeds is non-edible. Considering these facts, the present work employs kenaf seeds as a feedstock for biodiesel production and its emission traits are determined on a compression ignition engine of 5.2 kW. The results of the investigation revealed that the feedstock seeds have an oil content of 31%. It is also observed from the investigation outcomes that the biodiesel proportion blend (B25) outperformed in terms of tail emission except nitrogen oxides (NOₓ). At peak load, the carbon monoxide emission is found to be 0.089 (% by volume), while the emission of hydrocarbon and NOₓ are 52 and 970 ppm, respectively. In the later phase of investigation, a triacetin antioxidant was dispersed with B25 in varying concentrations. The outcomes revealed that a 0.25 g concentration is optimum, which results in a NOₓ emission of 949 ppm.