Pollutants can be classified as primary or secondary. Briefly describe the diffe
ID: 1709768 • Letter: P
Question
Pollutants can be classified as primary or secondary. Briefly describe the difference between primary and secondary pollutants and give two examples of each type? Acid deposition (rain) results from emissions of sulfur dioxide (SO_2) and nitrogen oxidizes ((NOx). Cap-and-Trade system was implemented in the USA to control emissions of SO_2 and NOx. Briefly describe the Cap-and-Trade system? Was the system successful0 Do you think Sulfur Dioxide is a major problem in KSA, if yes/no please clarify? Carbon Monoxides are produced when carbonaceous fuels are burned under less than ideal conditions. Briefly describe the four variables control the combustion of carbonaceous fuels? What are the air quality six criteria pollutants? What are the major health impacts of each? Why Particular matter is a major concern in KSA? Airborne lead may affect human population by direct inhalation from indoor and outdoor sources. Briefly describe the indoor and outdoor sources of airborne lead? A number of gas cleaning devices can be used to remove particulates. The most commonly used three devices are Cyclone Collectors, as baghouses and electrostatic precipitators. Briefly discuss the working methodology, efficiency, and advantages and disadvantages of each device? A stack emitting 40 g/s of NO has an effective stack height of 100 m The wind speed is 3.5 m/s at 5 m, and it is a clear summer day with the sun nearly overhead Estimate the ground level NO Concentration a- Directly downwind at a distance of 2 km b- At the point downwind where NO is a maximum c- At a point located 3 km downwind and 0.5 km off the downwind axis?Explanation / Answer
1) The air pollutants are directly emittedn from particular sources are known as primary air pollutants
example : compounds of sulphur , oxides of nitrogen,compound of halogen,radio active compunds,carbon monoxide
Secndary air pollutants are formed due to reaction of primary air pollutant and natural atmospheric constituent
example : ozone,smog,acid mists
4)
S.NO Pollutant Health effects 1 Carbon monoxide Interfers the transport of blood to other organs by binding chemically with hemoglobin which leads to slower reflexion , confusion etc 2 Sulphur dioxide breathing problems , bronchitis 3) lead mental retardation, behavorial disorders, brain and kidney damage 4) ozone damages lung tissue and effects lung functioning 5) Nitrogen dioxide asthma, coughing,wheezing and shortness of breath 6) Particulate matter malfunctioning of respiratory system and other adverse health effects