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Question
Which of the following is a method utilised to get rid of particulate matter present in the exhaust from a thermal power plant?
Which of the following is a method utilised to get rid of particulate matter present in the exhaust from a thermal power plant?
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Solution
The correct option is D Electrostatic precipitation
Electrostatic precipitators are devices that are capable of removing 99 per cent particulate matter present in the exhaust from industries. These devices consist of negatively charged electrode wires that are maintained at several thousand volts. The electrodes produce a discharge corona (a region of air that undergoes electrical breakdown and becomes conductive) that releases electrons which attach to the dust particles and give them a net negative charge. The collecting plates are grounded and attract the negatively charged dust particles. Low velocity of air between the collecting plates is maintained to allow the dust to fall.
Magnetic separation is one purification technique that has been adapted from ore mining industries. It is the process of separating components of mixtures by using a magnet to attract magnetic materials. Chromatography is a process for separating components of a mixture for chemical analysis. Mass spectrometry is an analytical tool useful for measuring the mass-to-charge ratio (m/z) of one or more molecules present in a sample.
Electrostatic precipitators are devices that are capable of removing 99 per cent particulate matter present in the exhaust from industries. These devices consist of negatively charged electrode wires that are maintained at several thousand volts. The electrodes produce a discharge corona (a region of air that undergoes electrical breakdown and becomes conductive) that releases electrons which attach to the dust particles and give them a net negative charge. The collecting plates are grounded and attract the negatively charged dust particles. Low velocity of air between the collecting plates is maintained to allow the dust to fall.
Magnetic separation is one purification technique that has been adapted from ore mining industries. It is the process of separating components of mixtures by using a magnet to attract magnetic materials. Chromatography is a process for separating components of a mixture for chemical analysis. Mass spectrometry is an analytical tool useful for measuring the mass-to-charge ratio (m/z) of one or more molecules present in a sample.
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