Activated charcoal,also called activated carbon which is made from sawdust-wood based activated charcoal,coal-coal based activated carbon, coconut shells-coconut shell active charcoal. It is a form of carbon processed to have small, low-volume pores that increase the surface area available for adsorption or chemical reactions.
The charcoal is activated by processing it at very high temperatures. The high temperatures change its internal structure, reducing the size of its pores and increasing its surface area. This results in activated charcoal is more porous than regular charcoal. Due to its high degree of microporosity, just one gram of activated carbon has a surface area in excess of 3,000 m2,as determined by gas adsorption. An activation level sufficient for useful application may be attained solely from high surface area; however, further chemical treatment often enhances adsorption properties.
Activated charcoal shouldn't be confused with charcoal briquettes that are used to light your barbecue.
While both can be made from the same base materials, charcoal briquettes have not been "activated" at high temperatures. Moreover, they contain additional substances that are toxic to humans, but activated carbon is beneficial to body to some extent.
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