Noboru Tanikawa*, Toshio Takemoto*, Hisashi Yokota**, Masanao Funeshima** and Kohei Urano***

* Tokyo Metropolitan Research Institute for Waste Management
** Tokyo Metropolitan Research Institute for Environmental Protection
*** Laboratory of Safety and Environmental Engineering, Faculty of Engineering, Yokohama National University

+ Correspondence should be addressed to Noboru Tanikawa:
(2 Aomi, Koto-ku, Tokyo, 135-0064 Japan)

Abstract

We examined the real running conditions of municipal waste collection vehicles in Tokyo, and established a running pattern for the estimation of exhaust gas from vehicles used in the collection of municipal waste. The emitted amounts of air pollutants from 3 kinds of low emission vehicles used in municipal waste collection, that used methanol, liquefied petroleum gas, and compressed natural gas as fuel, were investigated according to established running patterns, and were compared with those of a diesel vehicle over a distance of 1km. It was found that NOx and particulate matter decreased drastically, but CO, total hydrocarbons, and HCHO did not always decrease. Furthermore, the emission units (g/t-waste) of the air pollutants from the municipal waste collection vehicles were obtained. In all of Japan, the emitted amounts of NOx, CO, total hydrocarbons, HCHO, and particulate matter from municipal waste collection vehicles were estimated to be 2.2X103t/y, 1.1X103t/y, 1.6X102t/y, 9.0t/y, and 2.6X102t/y respectively, in 1995.

Key words: low emission vehicle, municipal waste collection vehicle, exhaust gas, emission units, air pollutants