Abstract
In order to show the influence of bacterial activity in GAC filters on the removal of organic matter, experiments were carried out with diluted aqueous solutions of biodegradable and of non-biodegradable compounds under sterile and non sterile conditions. Productions of CO 2 show clearly that the bacterial activity can lead to a complete elimination of the biodegradable solute and to a partial microbiological regeneration of the adsorbent. By its influence on the competitive adsorption, the biological removal of biodegradable compounds leads to an increase of GAC adsorptive capacities for the non-biodegradable organic matter.
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