Environmental Issues. Flashcards
Environmental protection Act was passed in the year?
1986
How much of particulate matter can be removed by electrostatic precipitator
99%
How should the velocity of air between the plates of an electrostatic precipitator be?
Low so that dust can fall
What kind of gases can be removed by scrubber
SO2
What materials pass through the exhaust in scrubber
A spray of water and lime
CPCB?
Central pollution control board
What’s the size of particulate matter that causes greatest harm to human health
Microparticles below 2.5 pm
Metals in catalytic Convertors
Pd, Pt, Rhodium
What do catalytic Convertors do
Reduce emissions of poisonous gases
Unburnt hydrocarbon when passed through Catalytic Convertors is converyed to
Co2 and water
What happens when carbon monoxide is passed through catalytic Convertors
Converted to co2 aand N2
What kind of petrol should be used by catalytic Convertors
Unleaded.
What happens if leafed petrol is used in catalytic Convertors
Inactivates Pt, Pd,
Air ( prevention and control of pollution) act
1981
When was air act amended and why
1987 to add noise
