WHAT IS ACTIVATED CARBON?
Activated carbon (also referred to as activated charcoal, activated coal or active carbon) is definitely a useful adsorbent. Due to their high floor, pore structure (micro, meso and macro), and also level 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 base materials for activated carbons are coconut shell, coal or wood.
Putting on ACTIVATED CARBON
Several types of activated carbon are suited for various specialized applications.
Granulated activated carbon
Pelletized activated carbon
Powdered activated carbon
Impregnated activated carbon
Catalytic activated carbon
Each grade and size of activated carbon is application specific. Choosing correct activated carbon product and mesh size is dependent upon the application and contaminants you intend to take out.
Typical applications are:
Eliminating volatile organic compounds for example Benzene, TCE, and PCE.
Hydrogen Sulfide (HS) and removing waste gases
Impregnated activated carbon utilized as a bacteria inhibitor in h2o filters
Elimination of taste and odor causing compounds including MIB and geosmin
Recovery of gold
Eliminating chlorine and chloramine
Designing an effective activated carbon filtering with plenty of contact time, pressure drop, and vessel dimension is important. Also, activated carbon’s physical and chemical characteristics play a huge role in removing contaminants effectively. Therefore, material tests are essential and ASTM test methods for example butane activity, surface, density, and water content (moisture) can be done to find the best suitable material for your application.
Varieties of ACTIVATED CARBON
Coconut shell-based activated carbon
The large internal surface areas seen as microporosity together with high hardness and low dust make these coconut shell carbons particularly attractive for water and significant air applications and also point-of-use water filters and respirators
Very high floor seen as a a large proportion of micropores
High hardness with low dust generation
Excellent purity, with a lot of products exhibiting a maximum of 3-5% ash content.
Renewable and green raw material.
Coal-based activated carbon
It generates different performance characteristics in industrial applications typically focused on with coal or coconut products.
Wood based activated carbon carries a high surface seen as an both mesopores and micropores and it has excellent decolorizing properties due to its signature porosimetry
Catalytic based activated carbon
Catalytic carbon is often a sounding activated carbon used to remove chloramines and hydrogen sulfide from h2o.
They have each of the adsorptive characteristics of conventional activated carbons, along with the power to promote chemical reactions.
Catalytic carbon isn’t impregnated with caustic chemicals
Because catalytic carbons have no impregnates, you won’t need to panic about reduced organic odor capacity or even the higher bed fire potential from the impregnated carbons.
Catalytic carbon is done by altering the top structure of activated carbon. It can be modified by gas processing at high temperatures to improve the electronic structure that will create the very best amount of catalytic activity on carbon for reducing chloramine and H2S in water. This added catalytic functionality is really a lot greater than that within traditional activated carbons. Catalytic carbon is an economical strategy to treat H2S levels as high as 20 or 30 ppm. Catalytic carbon converts adsorbed H2S into sulfuric acid and sulfurous acid that are water soluble, so carbon systems can be regenerated with water washing to regenerate H2S ease of more uncommon physical change-outs.
Relatively low density
Renewable method to obtain raw material
Impregnated Activated Carbon
Surface impregnation chemically modifies activated carbon by having a fine distribution of chemicals and metal particles on the internal surfaces of the pores. This greatly raises the carbon’s adsorptive capacity by having a synergism between your chemicals as well as the carbon. And supplies a cost-effective method to remove impurities from gas streams which could otherwise not possible.
Water treatment
For the antimicrobial/antiseptic properties, silver-impregnated carbon is an effective adsorbent for purification in earth-bound domestic as well as other water systems.
Gas purification
Impregnated activated carbon is used to treat flue gases in coal-fired generation plants along with other pollution control applications. Carbon could be specifically impregnated for eliminating 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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