Atmospheric impacts of black carbon emission reductions through the strategic use of biodiesel in California

The Science of the Total Environment
Hongliang ZhangM J Kleeman

Abstract

The use of biodiesel as a replacement for petroleum-based diesel fuel has gained interest as a strategy for greenhouse gas emission reductions, energy security, and economic advantage. Biodiesel adoption may also reduce particulate elemental carbon (EC) emissions from conventional diesel engines that are not equipped with after-treatment devices. This study examines the impact of biodiesel blends on EC emissions from a commercial off-road diesel engine and simulates the potential public health benefits and climate benefits. EC emissions from the commercial off-road engine decreased by 76% when ultra-low sulfur commercial diesel (ULSD) fuel was replaced by biodiesel. Model calculations predict that reduced EC emissions translate directly into reduced EC concentrations in the atmosphere, but the concentration of secondary particulate matter was not directly affected by this fuel change. Redistribution of secondary particulate matter components to particles emitted from other sources did change the size distribution and therefore deposition rates of those components. Modification of meteorological variables such as water content and temperature influenced secondary particulate matter formation. Simulations with a source-oriented W...Continue Reading

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Citations

Sep 17, 2016·Scientific Reports·Qingyang LiuJames J Schauer
Sep 11, 2017·Energy & Fuels : an American Chemical Society Journal·Michael D HaysJoseph McDonald

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