WHAT IS ACTIVATED CARBON?
Activated carbon (also known as activated charcoal, activated coal or active carbon) is definitely a useful adsorbent. Because of the high floor, pore structure (micro, meso and macro), as well as amount of surface reactivity, activated carbon can be used to purify, dechlorinate, deodorize and decolorize both liquid and vapor applications. Moreover, activated carbons are economical adsorbents for several industries for example water purification, food grade products, cosmetology, automotive applications, industrial gas purification, petroleum and platinum recovery mainly for gold. The beds base materials for activated carbons are coconut shell, coal or wood.
Use of ACTIVATED CARBON
Different types of activated carbon are suited to various specialized applications.
Granulated activated carbon
Pelletized activated carbon
Powdered activated carbon
Impregnated activated carbon
Catalytic activated carbon
Each grade and size activated carbon is application specific. Selecting the correct activated carbon product and mesh size is dependent upon the application form and contaminants you want to take out.
Typical applications are:
Removing chemical toxins such as Benzene, TCE, and PCE.
Hydrogen Sulfide (HS) and eliminating waste gases
Impregnated activated carbon used as a bacteria inhibitor in drinking water filters
Removal of taste and odor causing compounds like MIB and geosmin
Recovery of gold
Removal of chlorine and chloramine
Designing an effective activated carbon filtration system with plenty of contact time, pressure drop, and vessel dimensions are important. Also, activated carbon’s physical and chemical characteristics play an important role in removing contaminants effectively. Therefore, material testing is essential and ASTM test methods including butane activity, surface, density, and water content (moisture) can be accomplished to find the best suitable material on your application.
Forms of ACTIVATED CARBON
Coconut shell-based activated carbon
Abdominal muscles large internal surface areas seen as microporosity as well as high hardness and low dust make these coconut shell carbons particularly attractive for water and critical air applications as well as point-of-use water filters and respirators
Extremely high surface area seen as the great majority of micropores
High hardness with low dust generation
Excellent purity, with a lot of products exhibiting no more than 3-5% ash content.
Renewable and green raw material.
Coal-based activated carbon
It makes different performance characteristics in industrial applications typically catered to with coal or coconut products.
Wood based activated carbon includes a high surface seen as both mesopores and micropores and possesses excellent decolorizing properties because of its signature porosimetry
Catalytic based activated carbon
Catalytic carbon can be a type of activated carbon used to remove chloramines and hydrogen sulfide from mineral water.
They have all the adsorptive characteristics of conventional activated carbons, as well as the capability to promote chemical reactions.
Catalytic carbon just isn’t impregnated with caustic chemicals
Because catalytic carbons don’t have any impregnates, you won’t have to worry about reduced organic odor capacity or even the higher bed fire potential with the impregnated carbons.
Catalytic carbon is done by altering the outer lining structure of activated carbon. It can be modified by gas processing at high temperatures to alter the electronic structure and build the very best level of catalytic activity on carbon for reducing chloramine and H2S in water. This added catalytic functionality is a lot in excess of that seen in traditional activated carbons. Catalytic carbon is surely an economical solution to treat H2S levels of up to 20 or 30 ppm. Catalytic carbon converts adsorbed H2S into sulfuric acid and sulfurous acid that are water soluble, so carbon systems may be regenerated with water washing to revive H2S ability to more uncommon physical change-outs.
Relatively low density
Renewable method to obtain raw material
Impregnated Activated Carbon
Surface impregnation chemically modifies activated carbon via a fine distribution of chemicals and metal particles around the internal surfaces of the company’s pores. This greatly raises the carbon’s adsorptive capacity through a synergism involving the chemicals and the carbon. And supplies a cost-effective strategy to remove impurities from gas streams which will otherwise ‘t be possible.
Water treatment
Because of its antimicrobial/antiseptic properties, silver-impregnated carbon is a great adsorbent for purification in earth-bound domestic and other water systems.
Gas purification
Impregnated activated carbon can be used to deal with flue gases in coal-fired generation plants along with other polluting of the environment control applications. Carbon can be specifically impregnated for eliminating acid gases, ammonia and amines, aldehydes, radio-active iodine, mercury and inorganic gases like arsine and phosphine. Carbon impregnated with metal-oxide targets inorganic gases including HCN, H2S, phosphine and arsine.
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