Bioheat® Emissions Reductions Biodiesel blended with heating oil reduces emissions that are harmful to human health and the environment. These include direct reductions in particulate matter, sulfur oxides, nitrogen oxides, carbon monoxide, aromatic hydrocarbons and lifecycle reduction for carbon dioxide and equivalent greenhouse gases. Emission benefits increase with the percentage of biodiesel from 5% (B5), 10% (B10) and 20% (B20), and are significant even at low blend levels. Carbon Dioxide (CO2): 100% biodiesel reduces lifecycle greenhouse gases (primarily CO2) by 81%1,2. The corresponding reductions for B5, B10 and B20 blends of biodiesel would be 4%, 8% and 16%, respectively. Nitrogen Oxides (NOx): Study results vary as nitrogen oxide emissions vary with the type of appliance as well as the blend of biodiesel. For residential space heating equipment, typical biodiesel blends (B0-B20) can produce NOx reductions between 5% and 7.5%. Commercial boilers using higher blends can reduce NOx by as much as 35% using B1003. Sulfur Oxides: (SOx): Sulfur oxides are reduced 19.7% by using B204. This reduction can also be assumed to be linear, resulting in 10% reduction for B10 and 5% reduction for B5. The percentage reduction of SOx due to biodiesel will remain relatively the same with low-sulfur or high-sulfur heating oil. The net reduction in pounds of SOx is significant when blending with low-sulfur heating oil. Unlike the percentage reduction, which will be nearly the same, the net reduction of pounds of SOx will be much greater when biodiesel is used to replace high-sulfur heating oil. Particulate Matter (PM2.5): Practically all particulate matter emitted falls in the PM2.5 fraction. B20 reduces PM2.5 by 15.7%5. Neat biodiesel (B100) can reduce particulate matter by as much as 68%6. Carbon Monoxide: (CO): Carbon monoxide reductions due to 100% biodiesel in heating oil applications vary between 40% for commercial boilers and 16% for residential boilers. Residential application can expect 5% CO reduction using B10 and 9% reduction using B207. Hydrocarbons: Biodiesel is virtually free of aromatic hydrocarbons. These compounds are reduced by 80-90%8 in diesel exhaust. Similar reductions can be expected for boiler emissions, due to the lack of the compounds in biodiesel that are commonly found in petroleum. ICM For References go to https://goo.gl/5cI3gp 22 ICM/March/April 2017
ICM March-Apri 2017
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