article thumbnail

Study finds biodiesel blend reduces total particle mass in emissions but may have greater adverse health effect per mass than diesel

Green Car Congress

They found that total particulate gravimetric mass collected over the engine test cycle was more than 2 times higher for B0 than for B20 fuel. Particle number distributions aggregated over one example drive cycle indicate a unimodal B0 distribution centered at 51 nm, but a B20 distribution with a smaller diameter mode at 32.2

B0 210
article thumbnail

Study finds PM from biodiesel blends may be 50-80% less toxic per unit PM mass than from petroleum diesel

Green Car Congress

In a study published in the ACS journal Energy & Fuels , a team from the University of Vermont reports that particulate matter from the combustion of biodiesel blends may be 50–80% less toxic per unit PM mass emitted than PM from petroleum diesel, depending on feedstock. nmol/min/mg PM for B0 and B100, respectively, and from 22.6 ± 4.5

B0 186
article thumbnail

Birmingham study finds butanol-gasoline blend reduces GDI engine-out carbonaceous emissions; similar NOx

Green Car Congress

A team at the University of Birmingham reports that a blend of 33% v/v of butanol in EN228 commercial gasoline containing 5% of ethanol (B33) reduces GDI (gasoline direct injection) engine-out carbonaceous emissions, while maintaining similar levels of NO x emissions when compared to standard gasoline combustion at low and medium engine loads.

Gasoline 170
article thumbnail

Jatropha Biodiesel-FT Blends Reduce Most Criteria Pollutants Compared to Neat FT; Higher NOx

Green Car Congress

Blending jatropha biodiesel (JBD) with Fischer-Tropsch synthetic diesel (FT) results in lower CO, THC, smoke and PM emissions compared to neat FT, according to a study by researchers at the Norwegian University of Science and Technology (NTNU) published in the ACS journal Energy & Fuels.

B0 199
article thumbnail

Massachusetts to Accept Only Waste-Derived Biofuels to Qualify for Mandate for Diesel and Home Heating Oil

Green Car Congress

For consideration as a qualifying fuel, the waste-derived biofuel must yield a 50% greenhouse gas reduction threshold required in the Massachusetts law as determined by a preliminary analysis based on both CARB and EPA methodologies. Massachusetts was the first state in the nation to require biofuel in home heating fuel.

article thumbnail

Optimizing Turbo Diesels for Emissions and Performance with 5% and 20% Biodiesel Blends

Green Car Congress

Their study was published online 21 December in the ACS journal Energy & Fuels. When used in diesel engines, biodiesel usually exhibits several combustion-related advantages, including reductions in CO, UHC and PM emissions, as well as a net CO 2 reduction. However, with an energy density 13% lower than diesel (37.5

Diesel 186