Title: Lagrangian modelling evaluation of the NO_x pollution reduction due to electric vehicles introduction

Authors: Stefano Alessandrini; Alessia Balanzino; Enrico Ferrero; Maurizio Riva

Addresses: RSE (Ricerca Sistema Elettrico), Via Rubattino, 54, 20134 Milano, Italy ' Università del Piemonte Orientale, viale Teresa Michel, 11, 15121 Alessandria, Italy ' Università del Piemonte Orientale, viale Teresa Michel, 11, 15121 Alessandria, Italy ' RSE (Ricerca Sistema Elettrico), Via Rubattino, 54, 20134 Milano, Italy

Abstract: In this paper, the problem of the atmospheric pollution due to the traffic emission from a large freeway is faced. To this aim, numerical simulations were performed and compared with measured data in a real case. The Lagrangian particle model includes a simple chemical scheme for the reactions between NO_x and ozone. The results, compared with a field experiment taken in the literature, show that the parameterisation of the segregation improves the model performances concerning NO₂ and O₃ in the first 300 m. Then the pollution reduction obtained introducing the electric vehicle is evaluated. Within the limits of the simple chemistry scheme and the particular meteorological and emissions conditions, it is found that the reduction is limited to a distance of about 100 m from the source.

Keywords: air quality; air pollution; atmospheric dispersion modelling; Lagrangian models; electric vehicles; pollution reduction; nitrogen oxides; NOx; vehicle emissions; traffic emissions; numerical simulation; particle models; ozone; O3.

DOI: 10.1504/IJEP.2012.051193

International Journal of Environment and Pollution, 2012 Vol.50 No.1/2/3/4, pp.200 - 208

Published online: 19 Nov 2014 *

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