What’s ACTIVATED CARBON?
Activated carbon (otherwise known as activated charcoal, activated coal or active carbon) is certainly a useful adsorbent. Because of their high area, 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 like water purification, food-grade products, cosmetology, automotive applications, industrial gas purification, petroleum and precious metal recovery mainly for gold. The camp materials for activated carbons are coconut shell, coal or wood.
Use of ACTIVATED CARBON
Several 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 sized activated carbon is application specific. Deciding on the correct activated carbon product and mesh size depends upon the approval 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 elimination of waste gases
Impregnated activated carbon utilized as a bacteria inhibitor in drinking water filters
Elimination of taste and odor causing compounds like MIB and geosmin
Recovery of gold
Elimination of chlorine and chloramine
Designing an appropriate activated carbon filtering system with plenty contact time, pressure drop, and vessel sizing is important. Also, activated carbon’s physical and chemical characteristics play a crucial role in removing contaminants effectively. Therefore, material exams are essential and ASTM test methods for example butane activity, surface, density, and water content (moisture) can be accomplished for top level suitable material for your application.
Forms of ACTIVATED CARBON
Coconut shell-based activated carbon
The large internal surface areas seen as microporosity together with high hardness and occasional dust make these coconut shell carbons particularly attractive for water and critical air applications along with point-of-use water filters and respirators
Very high surface seen as a a large proportion of micropores
High hardness with low dust generation
Excellent purity, with many products exhibiting only 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 features a high floor seen as a both mesopores and micropores and has excellent decolorizing properties due to its signature porosimetry
Catalytic based activated carbon
Catalytic carbon can be a sounding activated carbon used to remove chloramines and hydrogen sulfide from normal water.
It has each of the adsorptive characteristics of conventional activated carbons, and also the power to promote chemical reactions.
Catalytic carbon is not impregnated with caustic chemicals
Because catalytic carbons don’t have any impregnates, you won’t need to bother about reduced organic odor capacity or 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 create the greatest level of catalytic activity on carbon for reducing chloramine and H2S in water. This added catalytic functionality is a lot greater than that found in traditional activated carbons. Catalytic carbon is surely an economical treatment for treat H2S levels as high as Twenty or thirty ppm. Catalytic carbon converts adsorbed H2S into sulfuric acid and sulfurous acid that happen to be water soluble, so carbon systems might be regenerated with water washing to revive 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 via a fine distribution of chemicals and metal particles around the internal surfaces of their pores. This greatly enhances the carbon’s adsorptive capacity through a synergism involving the chemicals and also the carbon. And provides a cost-effective approach to remove impurities from gas streams which could otherwise stop possible.
Water treatment
For the 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 is utilized to treat flue gases in coal-fired generation plants and also other polluting of the environment control applications. Carbon may 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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