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<p>Bioethanol derived from organic agricultural wastes is a promising alternative fuel. The use of bioethanol, combined with the benefits of biodiesel, in compression ignition (CI) engines could be a viable solution to meet current energy demands. In this study, four blends were prepared, consisting of varying percentages of bioethanol (5–20% by volume), waste cooking oil biodiesel (20% by volume), and diesel. Tests were conducted on a single-cylinder, four-stroke diesel engine connected to an eddy-current dynamometer. The 20BE20BD60D blend showed the highest peak pressure, thermal efficiency, and volumetric efficiency, followed by the 15BE20BD65D and 10BE20BD70D blends. Fuel consumption was higher for the 10BE20BD70D and 5BE20BD75D blends. Carbon monoxide, hydrocarbon, and smoke opacity levels were lower for the biofuel blends. Diesel produced the lowest NO<sub>x</sub> emissions compared to all the biofuel blends. The study results indicated that brake thermal efficiency improved by approximately 10.8% with the addition of ethanol to the biodiesel-diesel blend. Significantly lower emissions were observed when the engine was operated with ethanol-concentrated blends, which outperformed the B20 biodiesel mode in terms of engine performance.</p>

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Usage of bioethanol obtained from agro wastes and biodiesel blends produced from waste cooking oils in diesel engine

  • 期刊论文

  • 发表日期：

    2026年2月23日

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  • Jayaprabakar Jayaraman,
  • T. Surulivel Rajan,
  • Man Mohan,
  • Abhishek Sharma

摘要

Bioethanol derived from organic agricultural wastes is a promising alternative fuel. The use of bioethanol, combined with the benefits of biodiesel, in compression ignition (CI) engines could be a viable solution to meet current energy demands. In this study, four blends were prepared, consisting of varying percentages of bioethanol (5–20% by volume), waste cooking oil biodiesel (20% by volume), and diesel. Tests were conducted on a single-cylinder, four-stroke diesel engine connected to an eddy-current dynamometer. The 20BE20BD60D blend showed the highest peak pressure, thermal efficiency, and volumetric efficiency, followed by the 15BE20BD65D and 10BE20BD70D blends. Fuel consumption was higher for the 10BE20BD70D and 5BE20BD75D blends. Carbon monoxide, hydrocarbon, and smoke opacity levels were lower for the biofuel blends. Diesel produced the lowest NOx emissions compared to all the biofuel blends. The study results indicated that brake thermal efficiency improved by approximately 10.8% with the addition of ethanol to the biodiesel-diesel blend. Significantly lower emissions were observed when the engine was operated with ethanol-concentrated blends, which outperformed the B20 biodiesel mode in terms of engine performance.