Long-term stability of bioelectricity generation coupled with tetrathionate disproportionation

A review of the innovative gas separation membrane bioreactor with mechanisms for integrated production and purification of biohydrogen

“…It has been widely emphasized that microorganisms can attach to the membrane surface to form a biofilm (Chae et al, 2008;Saeed et al, 2015). The biofilm layer can make the membrane substantially thicker and consequently, increase its resistance to mass transfer and ion transport (Sulonen et al, 2016). Both effects limit the operating efficiency of MET.…”

The effect of anode potential on bioelectrochemical and electrochemical tetrathionate degradation

“…shown to be able to maintain average current density above 100 mA m -2 for over two years 398 without the need for significant maintenance (Sulonen et al, 2016). 399 400 To estimate the differences in the electrochemical and bioelectrochemical processes in the 401 larger scale, the energy efficiencies were calculated for the treatment of 1000 L waste water 402 containing 0.5 g L -1 of tetrathionate in 10 electrochemical reactors each with a volume of 5 403 L and anode electrode area of 0.05 m 2 (see Supplementary material for additional 404 information on the system and the calculations).…”

“…The effects of the decreasing of the external resistance on current density 123 and tetrathionate degradation rates have been previously reported (Sulonen et al, 2016). 124…”

“…190Before starting the anode potential control, the external resistance of BES was gradually 191 decreased from 1000 Ω to 240 Ω to enhance the current generation(Sulonen et al, 2016).192 When the external resistance was decreased, the average anode potential increased, the 193 values being 0.375 V, 0.400 V and 0.427 V with external resistances of 1000 Ω (days 100-194 140), 499 Ω and 240 Ω, respectively. The average tetrathionate degradation rates were 150 195 mg L -1 d -1 (1000 Ω), 180 mg L -1 d -1 (499 Ω) and 240 mg L -1 d -1 (240 Ω).…”

Biosensors based on lithotrophic microbial fuel cells in relation to heterotrophic counterparts: research progress, challenges, and opportunities

“…Only recently have several MFC (or BES) systems operated with inorganic electron donors (substrates), such as sulfide, reduced inorganic sulfur compounds, ammonium, or metal ions, e.g. Fe 2+ , have been reported [20]–[24]. However, regarding their use as biosensors, only those operated with metal ions as electron donors have been studied [17],[23].…”