WHAT IS ACTIVATED CARBON?
Activated carbon (also referred to as activated charcoal, activated coal or active carbon) is a very useful adsorbent. Because of their high floor, pore structure (micro, meso and macro), and amount 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 like water purification, food grade products, cosmetology, automotive applications, industrial gas purification, petroleum and rare metal recovery mainly for gold. The bottom materials for activated carbons are coconut shell, coal or wood.
Using ACTIVATED CARBON
Different 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 the correct activated carbon product and mesh size is determined by the application and contaminants you’re planning to take out.
Typical applications are:
Removal of volatile organic compounds including Benzene, TCE, and PCE.
Hydrogen Sulfide (HS) and removing waste gases
Impregnated activated carbon used as a bacteria inhibitor in drinking water filters
Removal of taste and odor causing compounds for example MIB and geosmin
Recovery of gold
Elimination of chlorine and chloramine
Designing a suitable activated carbon filtering with enough contact time, pressure drop, and vessel size is important. Also, activated carbon’s physical and chemical characteristics play a huge role in removing contaminants effectively. Therefore, material exams are essential and ASTM test methods for example butane activity, floor, density, and water content (moisture) can be executed to find the best suitable material to your application.
Varieties of ACTIVATED CARBON
Coconut shell-based activated carbon
The large internal surface areas seen as microporosity in addition to 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 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 produces different performance characteristics in industrial applications typically catered to with coal or coconut products.
Wood based activated carbon has a high surface area characterized by both mesopores and micropores and contains excellent decolorizing properties because of its signature porosimetry
Catalytic based activated carbon
Catalytic carbon is often a type of activated carbon used to remove chloramines and hydrogen sulfide from normal water.
They have all the adsorptive characteristics of conventional activated carbons, plus the capability to promote chemical reactions.
Catalytic carbon isn’t impregnated with caustic chemicals
Because catalytic carbons have zero impregnates, you won’t need to panic about reduced organic odor capacity or perhaps the higher bed fire potential of the impregnated carbons.
Catalytic carbon is produced by altering the surface structure of activated carbon. It can be modified by gas processing at high temperatures to improve the electronic structure that will create the highest level of catalytic activity on carbon for reducing chloramine and H2S in water. This added catalytic functionality is really a lot greater than that seen in traditional activated carbons. Catalytic carbon is definitely an economical strategy to treat H2S levels of up to 20 to 30 ppm. Catalytic carbon converts adsorbed H2S into sulfuric acid and sulfurous acid that happen to be water soluble, so carbon systems could be regenerated with water washing to revive H2S ease of less frequent 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 for the internal surfaces of the company’s pores. This greatly raises the carbon’s adsorptive capacity by having a synergism between your chemicals along with the carbon. And supplies a cost-effective approach to remove impurities from gas streams which could otherwise not possible.
Water treatment
Due to the antimicrobial/antiseptic properties, silver-impregnated carbon is an effective adsorbent for purification in earth-bound domestic and also other water systems.
Gas purification
Impregnated activated carbon is utilized to help remedy flue gases in coal-fired generation plants and also other air pollution control applications. Carbon might be specifically impregnated for elimination of acid gases, ammonia and amines, aldehydes, radio-active iodine, mercury and inorganic gases including arsine and phosphine. Carbon impregnated with metal-oxide targets inorganic gases including HCN, H2S, phosphine and arsine.
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