Key Information About Activated Carbon
What's ACTIVATED CARBON?
Activated carbon (otherwise known as activated charcoal, activated coal or active carbon) is an extremely useful adsorbent. Because of the high surface, pore structure (micro, meso and macro), as well as level 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 most industries including water purification, food grade products, cosmetology, automotive applications, industrial gas purification, petroleum and platinum recovery mainly for gold. The camp materials for activated carbons are coconut shell, coal or wood.
Use of ACTIVATED CARBON
Different 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 height and width of activated carbon is application specific. Choosing the correct activated carbon product and mesh size is determined by the application form and contaminants you're planning to get rid of.
Typical applications are:
Elimination 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
Removing taste and odor causing compounds for example MIB and geosmin
Recovery of gold
Eliminating chlorine and chloramine
Designing a suitable activated carbon filtration with plenty contact time, pressure drop, and vessel size is important. Also, activated carbon’s physical and chemical characteristics play a vital role in removing contaminants effectively. Therefore, material exams are essential and ASTM test methods including butane activity, surface area, density, and water content (moisture) can be accomplished to get the best suitable material for the application.
TYPES OF ACTIVATED CARBON
Coconut shell-based activated carbon
Ab muscles large internal surface areas seen as a microporosity as well as high hardness and occasional dust make these coconut shell carbons particularly attractive for water and significant air applications as well as point-of-use water filters and respirators
Quite high area seen as a a large proportion of micropores
High hardness with low dust generation
Excellent purity, generally 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 catered to with coal or coconut products.
Wood based activated carbon has a high surface characterized by both mesopores and micropores and possesses excellent decolorizing properties due to its signature porosimetry
Catalytic based activated carbon
Catalytic carbon can be a sounding activated carbon accustomed to remove chloramines and hydrogen sulfide from normal water.
It's got 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 don't have any impregnates, you won’t need to bother about reduced organic odor capacity or perhaps the higher bed fire potential of the impregnated carbons.
Catalytic carbon is made by altering the top structure of activated carbon. It really is modified by gas processing at high temperatures to improve the electronic structure and build the greatest a higher level catalytic activity on carbon for reducing chloramine and H2S in water. This added catalytic functionality is a lot greater than that present in traditional activated carbons. Catalytic carbon is definitely an economical strategy to treat H2S levels as high as Twenty to thirty ppm. Catalytic carbon converts adsorbed H2S into sulfuric acid and sulfurous acid that are water soluble, so carbon systems could be regenerated with water washing to bring back H2S ease of less frequent physical change-outs.
Relatively low density
Renewable source of raw material
Impregnated Activated Carbon
Surface impregnation chemically modifies activated carbon through a fine distribution of chemicals and metal particles around the internal surfaces of the company's pores. This greatly increases the carbon’s adsorptive capacity via a synergism between your chemicals and also the carbon. And provides a cost-effective way to remove impurities from gas streams which will otherwise not possible.
Water treatment
Because of its antimicrobial/antiseptic properties, silver-impregnated carbon is an efficient adsorbent for purification in earth-bound domestic as well as other water systems.
Gas purification
Impregnated activated carbon can be used to treat flue gases in coal-fired generation plants and also other pollution control applications. Carbon can be specifically impregnated for removal of 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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