Activated carbon is a useful absorbent today and is commonly found in our home and office water purifiers. Its high surface area and pore structure make it an effective scavenger. It is also effectively used in deodorants, dechlorination and decolorization due to its high surface reactivity.

Activated carbon is readily available in coal, wood and coconut shells. Different types of activated carbon are used for different industrial purposes. The most common activated carbons are granular, pelletized, powdered, impregnated and catalytic activated carbons.

Types of Activated Carbon

Granular Activated Carbon (GAC) - Irregularly shaped particles ranging in size from 0.2 to 5 mm. This type is used for liquid and gas phase applications.

Powdered Activated Carbon (PAC) — Powdered activated carbon granules are made using ground or crushed carbon. Typically, powdered activated carbon granules are added directly to other process units such as rapid mixing tanks, raw water inlets and clarifiers. In most cases, these particles are a good choice for carbon block filters.

Demand for such relatively low-cost filter media for gas and liquid applications is generally high. Coal-based activated carbon has a high surface area characterized by mesopores and micropores.

Extruded Activated Carbon (EAC) - Extruded and cylindrical, from 0.8 to 5 mm in diameter. They are mainly used in gas phase applications because of their low pressure drop, high mechanical strength and low dust content.

Catalytic carbon is a type of activated carbon used to remove chloramines and hydrogen sulfide from drinking water.

It has all the adsorption properties of traditional activated carbon, plus the ability to promote chemical reactions.

What compound are adsorbed?

All compounds are adsorbable to some extent. In practice, activated carbon is mainly used to adsorb organic compounds as well as some larger molecular weight inorganic compounds such as iodine and mercury. In general, the adsorptive properties of compounds increase with the following factors:

So the ones mentioned above are the most common types of activated carbon. Activated carbon filters out impurities and contaminants through an adsorption chemical process in water filtration. Dearfilter manufactures water filters using advanced activated carbon technology. You can explore a variety of refrigerator water filters, including filter 4396841,eptwfu01 compatible. You should try an activated carbon water filter.