Activated carbon can be used in its pure state to remove organic pollutants from air and gases, or impregnated to retain pollutants in a gaseous state that a standard activated carbon does not retain, these carbons are chemically impregnated, for acid gases, organic vapors, vapors of mercury, ammonia vapors and low molecular weight amines.
Chemically modified activated carbons complement the natural functions that a conventional activated carbon does not cover, to retain other compounds. What potentiates the neutralization and adsorption of an activated carbon.
Some of the natural gas reserves contain trace concentrations of mercury. Mercury removal is particularly important in the production of LNG liquefied natural gas, as mercury can cause corrosion of the aluminum heat exchangers used in this process. In addition to the use in cartridge respirators (masks) for places with contamination of mercury in the gas phase.
Various types of gases such as ethylene, natural gas and biogas are desulfurized using activated carbon. Activated carbon can be used for H2S removal in biogas streams, anaerobic digesters (AD), landfills, or municipal wastewater treatment plants.
AMMONIA AND AMINES
Activated charcoal can also be used to purify gas with amines in natural gas or ammonia scrubbing systems.
In order to protect compressor parts, and also as an efficiency aid, activated carbon is used to remove traces of lubricating oil in the air flow.
FRUIT STORAGE - LOW OXYGEN LEVEL
Activated carbon is used in scrubber systems to control carbon dioxide and ethylene in fruit storage facilities to prevent premature ripening or spoilage.
PURIFICATION OF HYDROGEN BY ADSORPTION
Activated carbon can be used to adsorb organic impurities during continuous hydrogen stripping (from methane / hydrogen steam reforming) or other gas stripping. By pressure oscillation.
New gas adsorption systems use the inherent properties of an adsorbent such as activated carbon and its general propensity to store gas, so that under pressure conditions the widely developed porosity of carbon allows a large increase in the storage volume of a pure gas, such as carbon dioxide or nitrogen, or a mixture of gases such as air.
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