Air pollutant concentrations

About: Air pollutant concentrations is a research topic. Over the lifetime, 1652 publications have been published within this topic receiving 36138 citations.

Long-Range Transport and Deposition of Air Pollution

Abstract: The processes whereby air pollutants are transported from emission sources across national or regional boundaries to areas far from the sources are referred as long-range transport (LRT) of air pollution. There is much evidence for the regional and intra- and intercontinental transport of ozone, fine particles and their precursors, mercury, and some persistent organic pollutants. LRT of air pollution has a great impact on local, regional, and global air quality. The most important policy-relevant question is how LRT of air pollution affects the air quality at a specified receptor point or area. Source–receptor relationships, defined as the sensitivity of concentrations or deposition levels at a receptor location to a change in emissions from a source location, need to be established for the design of air pollution control policies.

Estimation of monetary values of air pollutant emissions in various US areas

Abstract: Two general methods of estimating monetary values of air pollutants are presented in this paper. The damage estimate method directly estimated, air pollutant by simulating air quality, identifying health and other welfare impacts damage values and valuing the identified impacts of air pollution, and valuing the identified impacts. Although the method is theoretically sound, many assumptions are involved in each of its estimation steps, and uncertainty exists in each step. The control cost estimate method estimates the marginal emission control cost, which represents the opportunity cost offset by emission reductions from some given control measures. Studies conducted to estimate emission values in US regions used either the damage estimate method or the control cost estimate method. Taking emission values estimated for some US air basins, this paper establishes regression relationships between emission values and total population and air pollutant concentrations. On the basis of the established relationships, both damage-based and control-cost-based emission values are estimated for 17 major US urban areas.

Emissions reduction from an oil burner by air staging

Abstract: The increasing concern and awareness among the public regarding the quality of environment that currently become more polluted due to combustion activities, particularly in industrial field has instigate the researchers and industrialists to find more comprehensives and enhanced technologies to reduce the so called pollutants emissions such as NOx, CO, CO2, SOx, VOCs and particulate matter (PM). These pollutants gases do not only harmful to the environment but also have appalling implications on human health and to all inhabitants in our ecological system. There are a few well-known methods that can reduce the emissions of those pollutants either by combustion modifications or post combustion treatment that is effective in reducing emissions pollutants but much expensive than the former. For this present project, the method that will be adapted is air staging method. By air staging techniques, some of the combustion air will be directed into the primary combustion zone, while the remaining air is directed into secondary zone. The function of the secondary air is to reduce the peak flame temperatures, which theoretically reduce the emissions of NOx emissions. The primary concern for this project is to investigate the reduction trend of NOx emissions. However other emissions such as CO, CO2 and SO2, will be accounted too.