Ethanol blend petrol cut emissions only negligibly

August 20th, 2008 - 3:15 pm ICT by IANS  

Sydney, Aug 20 (IANS) Use of five and 10 percent ethanol blend petrol was found to cut emissions only marginally in a project undertaken by Commonwealth Scientific and Industrial Research Organisation.The project involved measuring exhaust emissions, including particulate matter, evaporative emissions, examination of formation of secondary organic aerosol, among others.

The programme was designed to examine vehicles representative of the current light duty petrol vehicle fleet. This was achieved by choosing vehicle makes and models with highest representation in Australian fleet, ethanol suitability and emissions control system.

A representative sample of 21 vehicles from the Australian passenger vehicle fleet was selected based on the above criteria for emissions testing.

The study measured the difference in vehicle emissions between ethanol blend petrol (up to 10 per cent) and unleaded petrol under Australian conditions.

The study then estimated the impact that changes in emission levels may have on the health budget, by modelling the costs of illness and death due to air pollution.

Results for other emissions show that some pollutants marginally increase such as oxides of nitrogen while others marginally decrease such as carbon monoxide marginally decrease.

Overall the study estimates a marginal health cost savings in the four major Australian cities from widespread use of E5 and E10 (five and 10 percent blends).

However, this saving will be eroded over time as new vehicles, with improved emission control technology, enter the market.

Tags: , , , , , , , , ,

Posted in World |