4.2 Variation of anode number and generation of voltage
Figure 3 illustrates the effects of the anode number in the SMFC in the laboratory experiments. It was observed that the amount of voltage increased twice when the anode number was twice. The peak reached up to 250 mV when double anode (2 anodes) were used. The electron acceptor areas were increased by increasing the number of the anode, as a result, the peak value was also showed higher when double anode was used instead of a single anode. The number of anode has an influence on generation of bacteria-induced electricity which was revealed by this experiment. The bacteria also closely attached with the anode materials to transfer the electrons from the sediment by making biofilm on the surface of the anode materials. Again, the surface area of the anodes had a greater influence on the bioelectricity generation. Moqsud 2020 showed the variation of voltage generation was affected by the anode materials such as stainless steel, graphite materials or bamboo charcoals. However, he did not show how much power generation has been affected by the number of anode.