2.2 Laboratory Experiments
Figure 1 illustrates the schematic diagram of SMFC in the laboratory experiment. One liter glass beaker was used in the laboratory as a single chamber SMFC without a separator. The sediment sample was placed in the cell. Same size (100 cm 2) of carbon fiber (Toray Corp. Tokyo, Japan) was used for both the anode and cathode materials (Moqsud 2020; Moqsud et al., 2014). The anode was placed inside the sediment and the cathode was placed on the top of the surface (Moqsud et al., 2013; Omine, 2009). Both of the electrodes were connected to a fixed external resistance (100 Ω) and measured the data by using a multimeter (UNI LCD Multimeter, USA). The external resistance was fixed at 100 Ω by assessing the polarization curve with different resistors and also by comparing open circuit voltage (OCV) (Moqsud et al., 2017). The polarization curve was drawn by following other literature (Logan nad Regan 2006). The laboratory investigation was conducted at a constant room temperature of 250 C. AVS was measured by following the GASTEC method.