Extremophiles for microbial-electrochemistry applications: A critical review

Osmotic Pressure Compensated Solute Ectoine Improves Salt Tolerance of Microbial Cells in Microbial Fuel Cells

“…The high concentrations of anions and cations in the MFCs substrate under high salt conditions can accelerate the ion migration rate, which can significantly reduce the internal resistance of MFCs which, in turn, is beneficial to MFCs electricity production. However, high salt environments also inhibit the growth of microbes . In this paper, we investigated the effects of different salt concentrations on the growth and electricity production of microbial flora in MFCs anodes.…”

“…Thus, the internal resistance of MFCs can be significantly reduced, which is beneficial to the electricity production . However, the high salt environment will also adversely affect the metabolism and growth of electrogenic microorganisms on the anode of MFCs, thereby affecting the population and community structure of anode biofilm, and may inhibit the electricity production and pollutants removal capacity of MFCs . Therefore, the problem of inhibition of microbial growth and metabolism under high salt conditions needs to be solved to obtain a high electricity generation of MFCs.…”

Thermophilic bio-electro CO2 recycling into organic compounds

“…The recent advances and range of possibilities for thermophilic microorganisms in METs were first reviewed by Dopson et al (2016) 40 and recently by Shrestha et al (2018). 8 Initial studies confirmed H 2 production at 55°C by a Firmicutes population. 9 Later, Faraghiparapari and Zengler (2017) 22 determined the optimal temperature range for acetate generation using two different Moorella strains, whereas Yu and colleagues studied the enhancement of applying immobilized cathodes for simultaneous acetate and formate production.…”

“…In consideration of the foregoing, operational management becomes more difficult and many sensors, electrodes and membranes may not be suitable because of their limited temperature range. 8 Until now, microbial electrosynthesis under thermophilic conditions has been rarely studied, though potential applications would not only revaluate industrial off-gases but also boost the product separation procedure. The recent advances and range of possibilities for thermophilic microorganisms in METs were first reviewed by Dopson et al (2016) 40 and recently by Shrestha et al (2018).…”

Catalyst Development of Microbial Fuel Cells for Renewable-Energy Production

“…Extremophiles can be used to oxidize sulfur compounds in acidic pH to remediate wastewaters and generate electrical energy from marine sediment microbial fuel cells at low temperatures. The MFC performance of these extremophilic microorganisms has been well summarized in several review papers [49,64]. In this section, the recent advances of MFCs using extremophilic microorganisms as catalysts are briefly introduced and discussed.…”