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Car exhaustsEffect on environment/humansHow to reduceRole of catalysts
Member rating: No Rating | Words: | Submitted: Mon Jan 16 2006
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Car exhausts Effect on environment/humans How to reduce Role of catalysts Hydrocarbons When car is filled up with petrol (vapourisation). Present in petrol. Released in exhaust fumes Carcinogens. Combine to produce photochemical smog. Affects asthmatics most. Use catalytic converters. Better engine design. Improve petrol tank and pump design. Adjust the fuel-oxygen ratio. Carbon Monoxide Incomplete combustion. Attaches to haemoglobin in humans - stops oxygen from being absorbed. Is toxic. Adjust fuel:oxygen ratio. Use catalytic converters. Add oxygenates. CO2 Burning off hydrocarbons. Greenhouse gas - global warming. Non hydrocarbon fuels. Oxides of N Nitrogen in the air reacts with oxygen and heat in the engine Produces smog when reacts with sunlight. Acid rain - damages building, kills plant and fish... Catalytic converters - changes oxides back to N2 Oxides of S Burning off sulphur compounds present in fuel. Acid rain. Removing as much sulphur compounds as possible from fuel. Although catalytic converters reduce acid rain, because they reduce nitrogen oxides and carbon monoxide, they don't help with greenhouse gases because the CO is...
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