pollution controlChemical and physical methods to lessen discharges of most pollutants; for carbon dioxide there is, at present, no economic or practical way to reduce the quantities discharged except by reduced fossil fuel usage. Most specific means for removing pollutants from emissions include flue-gas desulphurisation, fluidised combustion, catalytic converters and the redesign of equipment, such as furnace burners and car engines, to lessen the production of pollutants
pollution control investment Securities held for the production of income in the form of interest and dividends with the aim of controlling or reducing pollution or substances in the environment deemed harmful to human health and natural resources