SCIENCE
ENVIRONMENTAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Machines used in cement factories to remove dust particles
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Spray gases with water to dissolve pollutants
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use catalysts to convert pollutants to H2O and CO2
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All of the above
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Detailed explanation-1: -Accordingly, electrostatic precipitator (ESP) is an efficient pollution control device to remove dust particulate matter from a flow gas using the force of an induced electrostatic charge.
Detailed explanation-2: -An electrostatic precipitator (ESP) removes particles from a gas stream by using electrical energy to charge particles either positively or negatively. The charged particles are then attracted to collector plates carrying the opposite charge.
Detailed explanation-3: -Originally designed for recovery of valuable industrial-process materials, electrostatic precipitators are used for air pollution control, particularly for removing harmful particulate matter from waste gases at industrial facilities and power-generating stations.
Detailed explanation-4: -Electrostatic precipitators (ESP) are used for gas cleaning in almost every section of cement manufacture. Application of ESP is studied, keeping in view Indian conditions.
Detailed explanation-5: -Control of dust emissions in the cement industry generally use mechanical collectors/collectors mechanical / dust collector, electrostatic precipitators, fabric filters, or a combination of such equipment (Kinsey, 1987).