What is activated carbon?
Activated carbon is a microporous and inert carbon with a large internal surface area (up to 1500m²/gramme). This surface area is capable of adsorbing organic molecules from liquids and gases: the contaminated molecules adhere to this surface.
The carbon (coal-based, coconut shell-based, wood-based etc.) is activated in three steps:
- The water is removed (dehydration);
- The organic matter is converted into elementary carbon (carbonisation) and non-carbon elements are discarded;
- The tar is burnt off and the pores are extended (activation).
Read on about
- Different types of activated carbon
- Applications with activated carbon: liquids and gases
- Chemical structure of activated carbon
- The adsorption process
Activated carbon is used for