09-30-2010, 05:08 AM
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Rebuilding spent carbon
Originally Posted by saint
can carbon be "re-activated"?
and is it bad for planted tanks?
The only way to rebuild the spent activated carbon is heating high-temperature, inside a vacuum furnace.
Under these conditions, the coal becomes white and very bright, while the adsorbed organics are deleted in gaseous form.
However, you can recover only a percentage of the previous activity.
In addition, this percentage is becoming increasingly low at every regeneration.
Therefore, after some regenerations, coal is no longer useable and must be replaced.