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Subject :What contribution can activated carbon make to environmental protection?
Environmental applications
Activated carbon is usually used in water filtration systems. In this illustration, the activated carbon is in the fourth level (counted from bottom).
Carbon adsorption has numerous applications in removing pollutants from air or water streams both in the field and in industrial processes such as:
Spill cleanup
Groundwater remediation
Drinking water filtration
Air purification
Volatile organic compounds capture from painting, dry cleaning, gasoline dispensing operations, and other processes
Volatile organic compounds recovery (solvent recovery systems, SRU) from flexible packaging, converting, coating, and other processes.
During early implementation of the 1974 Safe Drinking Water Act in the US, EPA officials developed a rule that proposed requiring drinking water treatment systems to use granular activated carbon. Because of its high cost, the so-called GAC rule encountered strong opposition across the country from the water supply industry, including the largest water utilities in California. Hence, the agency set aside the rule.
Activated carbon filtration is an effective water treatment method due to its multi-functional nature. There are specific types of activated carbon filtration methods and equipment that are indicated – depending upon the contaminants involved.
Activated carbon is also used for the measurement of radon concentration in air. |
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Last Edited On: 19-09-2020 By for the Reason Modify the error |
