INFLUENCE OF VARIOUS FACTORS ON THE EFFICIENCY OF MFC BASED ON THE PROCESS OF MICROBIAL DISSIMILATORY SULFATE-REDUCTION.

Microbial Fuel Cell (MFC) based on the process of microbial dissimilatory sulfate-reduction, provides the possibility of generating electricity while removing sulfates from the electrolytic solution. A MFC was constructed using Cation Exchange Membrane type CMI-7000S and graphite electrodes without addition of any toxic mediators as electron acceptors in the anode chamber, partially filled with natural zeolite. In a series of investigations the influence of basic technological parameters on the generated voltage was established in open circuit (OCV) - temperature, pH, ratio COD/SO₄ and aeration intensity in the cathodic zone. A multifactorial regression analysis based on the experimentally obtained data was made as the importance of each of the investigated factors was established. [ABSTRACT FROM AUTHOR]