DEC.ACA™ • activated carbon | industrial applications
Great flexibility, several different types and grades available and a variety of applications: industrial activated carbon is the most widely used filtration media for treatments of fluids, in both liquid and gaseosus phase. Thanks to its non-polar surface characteristic, activated carbon shows high affinity with most organics (VOCs), while showing low affinity with water, in contrast with the polar desiccating adsorbents (such as molecular sieves).
Activated carbon is a carbon structure which has been given a particular porosity, with a resulting inner surface accessible to molecules of varying nature and size.
This porosity is developed by the activation process, which creates a remarkable power of adsorption, an indispensable process in industrial separation, purification, decolorisation and VOC recovery techniques.
DEC.ACA™ • classification of activated carbons
Active carbons can be divided into the following types according to their use:
DEC.ACA™ • activated carbon | adsorption and desorption
Adsorption is a physical (reversible) process where organic molecules are held at the carbon surface, by a mechanical attraction (Van Der Waals forces) resulting from intermolecular attraction (relatively weak, if compared to normal chemical bonds). Desorption is the reversal of the adsorption process. In the (in situ) regeneration process, the adsorbed solvent is stripped from the activated carbon, using two processes, alone or combined: