WHAT IS ACTIVATED CARBON?
Activated carbon (also known as activated charcoal, activated coal or active carbon) is definitely a useful adsorbent. Due to their high surface, pore structure (micro, meso and macro), and level 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 a lot of industries for example 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.
Putting on ACTIVATED CARBON
A variety of activated carbon are fitted 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 application form and contaminants you plan to remove.
Typical applications are:
Removing volatile organic compounds for example Benzene, TCE, and PCE.
Hydrogen Sulfide (HS) and removing waste gases
Impregnated activated carbon used as a bacteria inhibitor in drinking water filters
Eliminating taste and odor causing compounds such as MIB and geosmin
Recovery of gold
Elimination of chlorine and chloramine
Designing a suitable activated carbon filtration system with plenty of contact time, pressure drop, and vessel sizing 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 including butane activity, surface, density, and water content (moisture) can be carried out to find the best suitable material for your application.
TYPES OF ACTIVATED CARBON
Coconut shell-based activated carbon
Abdominal muscles large internal surface areas characterized by microporosity together with high hardness and low dust make these coconut shell carbons particularly attractive for water and important air applications and also point-of-use water filters and respirators
Very high surface area characterized by a large proportion of micropores
High hardness with low dust generation
Excellent purity, with many products exhibiting no more than 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 includes a high surface characterized by both mesopores and micropores and contains excellent decolorizing properties owing to its signature porosimetry
Catalytic based activated carbon
Catalytic carbon can be a sounding activated carbon employed to remove chloramines and hydrogen sulfide from mineral water.
It has all the adsorptive characteristics of conventional activated carbons, as well as the capability to promote chemical reactions.
Catalytic carbon is just not impregnated with caustic chemicals
Because catalytic carbons have zero impregnates, you won’t need to panic about reduced organic odor capacity or higher bed fire potential with the impregnated carbons.
Catalytic carbon is produced by altering the surface structure of activated carbon. It is modified by gas processing at high temperatures to change the electronic structure and build the greatest level of 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 can be an economical strategy to treat H2S levels all the way to 20 or 30 ppm. Catalytic carbon converts adsorbed H2S into sulfuric acid and sulfurous acid that happen to be water soluble, so carbon systems may be regenerated with water washing to restore H2S ability to 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 for the internal surfaces of the pores. This greatly improves the carbon’s adsorptive capacity through a synergism between your chemicals and also the carbon. And supplies a cost-effective way to remove impurities from gas streams which could otherwise not be possible.
Water treatment
For the antimicrobial/antiseptic properties, silver-impregnated carbon is a great adsorbent for purification in earth-bound domestic as well as other water systems.
Gas purification
Impregnated activated carbon can be used to help remedy flue gases in coal-fired generation plants and other pollution control applications. Carbon might be specifically impregnated for removal 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.
More info about Activated Carbon for Gold Processing Recovery Refining take a look at the best net page