What are the extensive applications of activated carbon in various industries
Activated carbon is a type of carbon, which is activated for super absorbency of odor, particulates and other pollutants. The activated carbon is manufactured from shells, coals, wood and other materials, which are gone through high temperature carbonization, activation and refined processes.
powdered activated carbon are used in liquid phase application primarily for removal of undesired colour, smell and other impurities in many types of industries including basic drugs, fine chemicals, glucose, sugar, electroplating plasticizers and so on. Quite often, powdered carbon is washed with acid and then, repeatedly with water & dried to minimize impurities like soluble ash-iron, heavy metals etc. Activated Carbon is invariably used in a batch process at the penultimate stage of manufacture of a product. A pre-determined quantity of activated carbon is added to a solution and after stirring for a certain contact time mostly at elevated temperature carbon is filtered out or settled to get a sparkling colour free solutions from which product is recovered. it is pertinent to mention that use of powdered activated carbon apart from decolourising imparts several other benefits like longer shelf life, truer, and bolder crystals, closer melting and boiling points etc.
Granular activated carbon is manufactured from wood chips and shells including coconut shells, walnut shells and almond shells. The coconut shell activated carbon is the most popular type.
Granular activated carbons are mostly made from Coconut Shells on petroleum coke, bituminous coal or lignite. Granular activated carbon is used in continuous process in areas like water treatment (drinking & effluent water), removal of mercury from effluents or alkali cells, solvent recovery, gold recovery, removal of odor, gas masks, as catalyst carrier, for decolorination of water, purification & separation of gases, kitchen hoods, dry cleaning etc.
The activated carbon has a wide range of applications in various industries.
1. It is widely used in the purification of coke, juice, wines and other drinks.
2. The activated carbon can be used in the car air purifier, air conditions and kitchens to fresh air and remove odors.
3. The coal powdered activated carbon can be used in the water treatment industries for deodorization and impurities removal.
4. Coal activated carbon is made from bituminous coal, peat and anthracite. The shapes of coal activated carbon are granular and columnar. Coal activated carbon has high mechanical strength and low-cost. It is widely used for poisonous gas purification.