What Are The Applications Of Granular Activated Carbon?

Granular activated carbon is widely used in chemical, food, medical, national defense and other fields due to its huge specific surface area and developed pore structure, as well as its advantages such as high mechanical strength, acid and alkali resistance, and stable properties. Especially in terms of environmental protection, activated carbon as a gas and liquid phase adsorbent to control air pollution and water pollution has important research significance. Granular activated carbon adsorbent uses the physical adsorption, chemical adsorption and oxidation catalysis of activated carbon to remove pollutants in water and the atmosphere.
Granular activated carbon, as an efficient adsorbent for clean energy, has provided great economic benefits for the storage and transportation of clean energy such as natural gas and hydrogen. At the same time, granular activated carbon is also widely used in gas refining: unpleasant odors in public or residential places, such as the smell of restaurant food, the smell of paper and sweat in libraries and offices, are all unpleasant, and granular activated carbon can be used to purify indoor air; industrial plants, such as food processing, drug manufacturing or precision instrument rooms, contain smoke, dust and irritants in the air, which will affect the health of workers or cause oxidation and corrosion of precision instruments. Granular activated carbon can be used to purify and remove impurities; the gases discharged from coal acid plants, chemical plants and automobile exhaust contain various organic solvents, inorganic and organic sulfides, hydrocarbons, organic mercury compounds and other harmful components. Direct discharge will seriously pollute the atmosphere and affect human health. Granular activated carbon can be used for efficient adsorption, recovery and discharge; activated carbon is used to purify the air in cold storage rooms and fruit warehouses to achieve circulating ventilation to reduce ethylene concentration and extend the storage period of fruits; nuclear power plants emit radioactive gases such as krypton and xenon, which can cause human cancer and plant death, and must be adsorbed and cleaned with activated carbon before discharge; in addition, granular activated carbon is widely used in the military to make gas masks and industrial respirators.
In the application of liquid phase adsorption, granular activated carbon is widely used in drinking water purification, industrial wastewater treatment, brewing, decolorization, deodorization, deodorization, desiccant, solvent recovery and other fields. The increasingly serious water pollution not only destroys the ecosystem in the water, but also poses a major threat to human health and social economy. Granular activated carbon has the advantages of strong adsorption performance, easy regeneration and repeated use, and can remove odor-producing substances and organic matter in water, such as benzene, phenol, chlorine, pesticides, detergents, trihalomethanes, etc. In addition, heavy metal ions such as silver, cadmium, copper, mercury, antimony, arsenic, bismuth, tin, lead, chromate, etc. can also be effectively removed. Granular activated carbon can also be used as a catalyst and its carrier, and is widely used in catalysis and electrochemistry, such as granular activated carbon catalytic degradation of ozone, as a carrier of precious metal catalysts, and the production of supercapacitors.