Study of Emissions from Biodiesel Exhaust Reveals Need for Investigation of Effects of Fine Particulate Matter
- Created: Friday, 20 January 2017 16:00
- Written by Anna Strom
Domestic wood burning and combustion of diesel fuel in automotive engines are considered to be the two main sources of emissions of particulate matter globally. Whether these latter impact negatively on human health depends on the size, shape and composition of the particles, as well as how well the body of a person who is exposed to such emissions is able to resist their impact, for how long the exposure goes on and with which intensity. According to the authors of a 2015 Review of the Health Impact of Airborne Particulate Matter, published in Environment International, "small" particles of concern include inhalable coarse particles with a diameter of 2.5 to 10 micrometre (μm) and fine particles smaller than 2.5 μm in diameter.
To complicate matters further, the authors of Bringing Biofuels on the Market point out that: “Raising the blending limits for biodiesel is more difficult because of the more complex diesel emission control technology and the possible presence of impurities in biodiesel. For most passenger car manufacturers substantial time would be needed to adapt the regeneration strategy for diesel particulate filters to the higher biodiesel blend”.