What’s ACTIVATED CARBON?
Activated carbon (otherwise known as activated charcoal, activated coal or active carbon) is a very useful adsorbent. Because of the high floor, pore structure (micro, meso and macro), and high degree of surface reactivity, activated carbon enables you to purify, dechlorinate, deodorize and decolorize both liquid and vapor applications. Moreover, activated carbons are economical adsorbents for many industries for example water purification, food grade products, cosmetology, automotive applications, industrial gas purification, petroleum and rare metal recovery mainly for gold. The beds base materials for activated carbons are coconut shell, coal or wood.
Using ACTIVATED CARBON
Several types of activated carbon are designed for various specialized applications.
Granulated activated carbon
Pelletized activated carbon
Powdered activated carbon
Impregnated activated carbon
Catalytic activated carbon
Each grade and height and width of activated carbon is application specific. Choosing correct activated carbon product and mesh size is determined by the application form and contaminants you plan to remove.
Typical applications are:
Removal of volatile organic compounds like Benzene, TCE, and PCE.
Hydrogen Sulfide (HS) and removing waste gases
Impregnated activated carbon utilized as a bacteria inhibitor in drinking water filters
Elimination of taste and odor causing compounds including MIB and geosmin
Recovery of gold
Removal of chlorine and chloramine
Designing a suitable activated carbon filtration with plenty of contact time, pressure drop, and vessel sizing is important. Also, activated carbon’s physical and chemical characteristics play a vital role in removing contaminants effectively. Therefore, material tests are essential and ASTM test methods for example butane activity, area, density, and water content (moisture) can be accomplished to get the best suitable material on your application.
TYPES OF ACTIVATED CARBON
Coconut shell-based activated carbon
The very large internal surface areas seen as a microporosity as well as high hardness and low dust make these coconut shell carbons particularly attractive for water and important air applications in addition to point-of-use water filters and respirators
High surface area seen as a large proportion of micropores
High hardness with low dust generation
Excellent purity, with many products exhibiting no more than 3-5% ash content.
Renewable and green raw material.
Coal-based activated carbon
It creates different performance characteristics in industrial applications typically catered to with coal or coconut products.
Wood based activated carbon carries a high surface seen as a both mesopores and micropores and contains excellent decolorizing properties as a result of its signature porosimetry
Catalytic based activated carbon
Catalytic carbon is really a sounding activated carbon employed to remove chloramines and hydrogen sulfide from mineral water.
They have all of the adsorptive characteristics of conventional activated carbons, plus the capacity to promote chemical reactions.
Catalytic carbon just isn’t impregnated with caustic chemicals
Because catalytic carbons haven’t any impregnates, you won’t have to worry about reduced organic odor capacity or perhaps the higher bed fire potential from the impregnated carbons.
Catalytic carbon is produced by altering the outer lining structure of activated carbon. It really is modified by gas processing at high temperatures to switch the electronic structure that will create the greatest amount of catalytic activity on carbon for reducing chloramine and H2S in water. This added catalytic functionality is much greater than that within traditional activated carbons. Catalytic carbon can be an economical strategy to treat H2S levels up to 20 to 30 ppm. Catalytic carbon converts adsorbed H2S into sulfuric acid and sulfurous acid which can be water soluble, so carbon systems could be regenerated with water washing to revive H2S capacity for less frequent physical change-outs.
Relatively low density
Renewable supply of raw material
Impregnated Activated Carbon
Surface impregnation chemically modifies activated carbon by having a fine distribution of chemicals and metal particles about the internal surfaces of the company’s pores. This greatly improves the carbon’s adsorptive capacity by having a synergism between your chemicals as well as the carbon. And provides a cost-effective strategy to remove impurities from gas streams which would otherwise not possible.
Water treatment
For the antimicrobial/antiseptic properties, silver-impregnated carbon is a great adsorbent for purification in earth-bound domestic as well as other water systems.
Gas purification
Impregnated activated carbon is utilized to take care of flue gases in coal-fired generation plants and other polluting of the environment control applications. Carbon can be specifically impregnated for removal of acid gases, ammonia and amines, aldehydes, radio-active iodine, mercury and inorganic gases for example arsine and phosphine. Carbon impregnated with metal-oxide targets inorganic gases including HCN, H2S, phosphine and arsine.
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