WHAT IS ACTIVATED CARBON?
Activated carbon (also referred to as activated charcoal, activated coal or active carbon) is a very useful adsorbent. Due to their high area, pore structure (micro, meso and macro), and degree of surface reactivity, activated carbon enable you to purify, dechlorinate, deodorize and decolorize both liquid and vapor applications. Moreover, activated carbons are economical adsorbents for many industries including 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.
Use of 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 height and width of activated carbon is application specific. Selecting the correct activated carbon product and mesh size depends on the applying and contaminants you intend to take out.
Typical applications are:
Eliminating volatile organic compounds including Benzene, TCE, and PCE.
Hydrogen Sulfide (HS) and eliminating waste gases
Impregnated activated carbon utilized as a bacteria inhibitor in drinking water filters
Removing taste and odor causing compounds including MIB and geosmin
Recovery of gold
Elimination of chlorine and chloramine
Designing a proper activated carbon filtration with sufficient contact time, pressure drop, and vessel dimensions are 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, floor, density, and water content (moisture) can be carried out to get the best suitable material to your application.
Forms of ACTIVATED CARBON
Coconut shell-based activated carbon
Ab muscles large internal surface areas seen as microporosity together with 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
Very high surface area seen as a large proportion of micropores
High hardness with low dust generation
Excellent purity, with a lot of products exhibiting only 3-5% ash content.
Renewable and green raw material.
Coal-based activated carbon
It creates different performance characteristics in industrial applications typically focused on with coal or coconut products.
Wood based activated carbon includes a high surface seen as an both mesopores and micropores and possesses excellent decolorizing properties owing to its signature porosimetry
Catalytic based activated carbon
Catalytic carbon is a class of activated carbon used to remove chloramines and hydrogen sulfide from h2o.
It’s got all of 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 have zero impregnates, you won’t need to panic about reduced organic odor capacity or even the higher bed fire potential in the impregnated carbons.
Catalytic carbon is done by altering the counter structure of activated carbon. It’s modified by gas processing at high temperatures to change the electronic structure and create the greatest a higher level catalytic activity on carbon for reducing chloramine and H2S in water. This added catalytic functionality is really a lot in excess of that found in traditional activated carbons. Catalytic carbon is definitely an economical solution to treat H2S levels all the way to 20 or 30 ppm. Catalytic carbon converts adsorbed H2S into sulfuric acid and sulfurous acid which are water soluble, so carbon systems may be regenerated with water washing to regenerate H2S capacity for more uncommon physical change-outs.
Relatively low density
Renewable way 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 pores. This greatly enhances the carbon’s adsorptive capacity by way of a synergism involving the chemicals along with the carbon. And offers a cost-effective way to remove impurities from gas streams which would otherwise not be possible.
Water treatment
For the antimicrobial/antiseptic properties, silver-impregnated carbon is an excellent adsorbent for purification in earth-bound domestic as well as other water systems.
Gas purification
Impregnated activated carbon can be used to take care of flue gases in coal-fired generation plants and also other smog control applications. Carbon can be specifically impregnated for eliminating acid gases, ammonia and amines, aldehydes, radio-active iodine, mercury and inorganic gases such as arsine and phosphine. Carbon impregnated with metal-oxide targets inorganic gases including HCN, H2S, phosphine and arsine.
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