APES Unit 7 Progress Check: FRQ
(a)(i) Identify one air pollutant released from the combustion of coal. - correct answer -carbon dioxide -sulfur dioxide -toxic metals (such as mercury) -particulates (a)(ii) Describe one method to reduce the air pollutants released from a coal-burning power plant. - correct answer -Install baghouse filters/bag filter to collect dust/remove particulates from the exhaust -Install electrostatic precipitators to remove suspended particulate matter from exhaust using high- voltage charge -Install wet scrubbers, which are air pollution control devices that remove particulate matter and/or gases from exhaust using a scrubbing liquid -Install dry scrubbers, which are air pollution control devices that remove acidic gases using a dry reagent -Regulate release of pollutants/set stricter limits for pollutants such as SOx and NOx particulates and mercury -Use precombustion coal-cleaning processes to reduce the amount of impurities (such as sulfur) from coal (b)(i) Based on the diagram, identify which of the labeled sources of indoor air pollutants would most likely release particulate matter. - correct answer -Fireplaces/wood stoves -Tobacco smoke -Floor and ceiling tiles; pipe installation -Furniture, carpets, foam insulation, pressed wood (b)(ii) Describe a negative effect of indoor particulate matter on human health. - correct answer - Irritation of eyes, nose, throat from exposure to particulates -Irritation of airways, coughing, difficulty breathing when small particles enter the respiratory system -Aggravation of chronic lung disease leading to loss of airway function
- / 1