Fig. 1
From: Scaling-up of a novel, simplified MFC stack based on a self-stratifying urine column
Illustration of the self-stratifying column membraneless microbial fuel cells (SSC-MFC). a schematic of a cross section of a tubular SSC-MFC stack comprising two elongated ceramic supports. b schematic of a rectangular SSC-MFCs with one out of two ceramic supports removed. In both a, b, the “C” and “A” stand for cathode and anode, respectively. c top view of the mounted stack comprising 20 MFCs and 21 ceramic supports inserted in a 5 L box (M5–21)