In the last years, to reduce the harmful effects due to the presence of BPA in aqueous systems, we employed immobilized enzymes operating in isothermal and non isothermal reactors , , , , ,  and .
In this paper, we describe the BPA removal in an aqueous solution by means of a microbial SB 216763 immobilized on activate granular carbon. The use of biofilm in bioremediation processes increased in the last years , ,  and .
The aim of this work is to improve the knowledge of the methods for the cleaning of the aqueous environments polluted with BPA. In this frame of reference we will show the results obtained with a fluidized bed reactor, equivalent to a BAC reactor, in which microbial cells were immobilized on activated granular carbon (GAC) to treat waters polluted by BPA, at a concentration present in industrial waste water, many order of magnitude higher of samples of that existing in rivers and/or municipal waste waters.
2. Materials, methods and apparatus