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What is the impact of emission reduction on alternative fuels? 


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The impact of emission reduction on alternative fuels varies depending on the type of fuel and the engine it powers. Alternative fuels like hydrogen, bioethanol, methanol, and LPG have shown promising results in reducing emissions such as NOx, CO, CO2, HC, and smoke in various types of engines, including spark ignition engines and diesel engines . Research on gas turbines suggests that alternative fuels can help reduce the carbon footprint and emissions output, especially when sourced from low life cycle emissions sources. While alternative fuels may not always provide a clear advantage in terms of gaseous emissions reduction compared to standard petroleum-derived fuels, they can significantly impact PM emissions, with bio-derived fuels showing very low PM emissions due to their low aromatic content . Efforts to reduce harmful emissions in the aviation industry have led to a focus on reducing the aromatic content in fuels to mitigate PM emissions .

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Reducing aromatic content in alternative fuels is crucial for lowering PM emissions in aviation, aligning with regulations like CAEP-11 to mitigate environmental and health impacts.
Alternative fuels can potentially reduce emissions from gas turbines, with CO2 emissions influenced by the fuel's H/C ratio. PM emissions can be lower with bio-derived fuels having low aromatic content.
The impact of emission reduction on alternative fuels, such as ammonia, methanol, and hydrogen, is being studied for naval vessels, showing potential for increased displacement without impractical size constraints.
Alternative fuels like bioethanol-gasoline mixtures reduce emissions in spark-ignition engines, impacting harmful substances and greenhouse gases, crucial for environmental and human health improvement.
Alternative fuels like hydrogen, bioethanol, methanol, and LPG lead to significant reductions in emissions such as NOx, CO, CO2, HC, and smoke in internal combustion engines.

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