Activated Carbon alone is not classified as a hazardous waste (activated carbon used to adsorb hazardous substances may become hazardous due to the chemicals it has adsorbed).
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The huge surface area of activated carbon gives it countless bonding sites. When certain chemicals pass next to the carbon surface, they attach to the surface and are trapped. Activated carbon is good at trapping other carbon-based impurities ("organic" chemicals), as well as things like chlorine.
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If left exposed to the environment, in time, activated charcoal will adsorb various pollutants and eventually “fill up.” Otherwise, if stored securely, there is no expiration limit other than what certain arbitrary governmental regulations may require as a maximum.
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Iodine number, butane activity, and carbon tetrachloride testing are used to determine the relative activation level and the general total adsorption capacities of unused or used activated carbons by measuring the carbons initial or remaining total pore volume.
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Coconut shell based activated carbon adsorbs odor and pollutant particles by trapping them while air or water flows through the pores, purifying the surrounding air or water in the process.
Coconut shell charcoal is "raw material" for made coconut shell based activated carbon.
Coconut shell based activated carbon is 100 times more porous than coconut shell charcoal, which significantly increases its effectiveness. Activated carbon's ability to filter out more than charcoal can.
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It is in the activation process that this vast surface area is created. The most common process is steam activation; at around 900°C steam molecules selectively burn holes into the carbonized raw material, thus creating a multitude of pores inside the carbonaceous matrix.
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