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Standard activated carbon has a relatively low capacity for NH3, because of its low molecular weight and high vapor pressure. To overcome this, Barnebey Sutcliffe, a division of Continental Carbon Group, developed Ammonasorb® II, an impregnated coconut shell based carbon that provides efficient removal of NH3 and amines from vapor phase streams. Ammonasorb® II has been used in various applications for indoor air quality. The capacity of Ammonasorb® II for ammonia ranges from 7% to 16% by weight, depending on operating conditions. For monomethylamine removal, the capacity is approximately 5% by weight. Standard mesh size is 4x8, but custom mesh sizes are available upon request. In most cases, the spent (used) Ammonasorb® II can be reactivated (recycled), ending your waste-generation liability.
Activated carbon preferentially removes oxygen from air. In closed or partially closed containers and vessels, oxygen depletion may reach hazardous levels. If workers are to enter a vessel containing carbon, appropriate sampling and work procedures for potentially low oxygen spaces should be followed, including all applicable Federal and State requirements.
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