Department of Pianificazione Territoriale, University of Calabria

Particulate matter: Comparison between two bus fuels

- By: , , ,

Courtesy of Department of Pianificazione Territoriale, University of Calabria

Particulate matter is a dangerous polluting. Particulate health effects depend from two factors: mass concentration and chemical-physical particles composition, as chemical marker, size and morphology. Particulate health risk factor is due to particles penetration in respiratory system. The aim of this work is based on the physical characterization of particulate matter emission from two different fuels used in public transport: diesel and ecologic. Particulate mass is determined by gravimetric method, while chemical-physical composition by electron microscopy and microanalysis. The dimensional distribution showed a relation between fuel used and particles morphology. Different fuels have produced different particles in mass and morphology.

Keywords: particulate matter, bus fuel, size distribution, combustion, urban transport

1. Introduction
The particulate pollution problem interests all urban atmospheres, because in urban air there are many particulate sources as natural and anthropic (Park,S., et al. 2005). The researchers defined in natural group many sources as soil erosion, volcano emissions, pollens and spores. In anthropic group there are sources as vehicles, industries, civil heating, building and bitumen erosion. The knowledge of sources contribution to particulate matter emission it is important to characterize air pollution and urban management. In urban air particulate matter (PM) pollution is the result of many sources action. In particular an important role is assumed from transport, public and private (Park and Kim, 2006, Romilly, 1999). Many studies demonstrated that the urban particles are composed from a high carbonaceous percentage as incomplete combustion results (Modey et al., 2004, Murr et al., 2004). For this reason fuel types could assume a role in particles characteristics determining. PM dimensional analysis shows two particles groups presence: coarse and fine. In coarse fraction there are particles with a diameter aerodynamic between 2.5 and 10 micrometers (PM10).

Customer comments

No comments were found for Particulate matter: Comparison between two bus fuels. Be the first to comment!