Figure 3From: Microbial community structures differentiated in a single-chamber air-cathode microbial fuel cell fueled with rice straw hydrolysatePower density and electrode potentials as a function of current density. (a) Polarization curves, and (b) electrode potentials for conductivity unadjusted (CUA) and adjusted (CA) solutions with hydrolysate of a COD concentration of 400Â mg/L. The conductivity was adjusted from 5.6 mS/cm to 17 mS/cm with addition of NaCl.Back to article page