Activated Carbon

ACTIVATED CARBON

CARBTROL offers a variety of activated carbons for adsorption of organic compounds from contaminated water and air streams. Produced to strict quality standards, our activated carbons have very high adsorption capacity, which minimizes carbon usage and saves money on carbon changeout costs.

Liquid phase:	Type CL	Coal based, granular virgin activated carbon, high activity. NSF approved for potable water applications.
	Type CSL	Coconut-shell based, granular virgin activated carbon, high activity, high hardness.

Vapor phase:	Type CV	Coal based granular virgin activated carbon, high activity.
	Type CSV	Coconut-shell based, granular virgin activated carbon, high activity, high hardness.
	Type CV-CAT	Coal based, granular virgin activated carbon, high activity. High catalytic action for H2S removal.
	Type CV-KOH	Coal based, pelletized virgin activated carbon, high activity, potassium hydroxide impregnated.

	Other impregnated carbons, reactivated carbons, and other media are available upon request.

Activated carbons are widely used for the adsorption of many organic compounds from contaminated water and air streams. The adsorption process results from a physical attraction which holds molecules of the absorbate at the surface of a solid by the surface tension of the solid.

Activated carbon is produced from carbonaceous materials such as coal, coconuts, wood and petroleum coke. Granulated activated carbon has an extensive pore structure which provides an enormous amount of surface area for each particle of material. For example, the surface area available in one pound of granular activated carbon is equivalent to six football fields.

A measure of the capacity of a carbon to adsorb chemical compounds is the iodine number used for the liquid phase, and the carbon tetrachloride number, used for the gaseous phase. These standard tests signify the amount of a given quantity of iodine or carbon tet which will be adsorbed in one gram of the test carbon. Iodine numbers usually are in the range of 900-1100 and carbon tet numbers are 60 to 65 for high quality carbon. See our article on Activated Carbon Quality.

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