Power recovery coupled with sulfide and nitrate removal in separate chambers using a microbial fuel cell

Enhanced nitrogen removal of low C/N wastewater using a novel microbial fuel cell (MFC) with Cupriavidus sp. S1 as a biocathode catalyst (BCS1)

“…Comparison of performance between C/N = 4 and C/N = 2 at 1000 Ω The unique advantage and limitation of Cupriavidus sp. S1 are effective nitrogen removal at high C/N ratios (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28) and the substantial restriction of denitrification at low C/N ratios (≤ 4), respectively. Therefore, the low C/N ratio in the cathode chamber at first was controlled at two values (4 and 2) at the R ext of 1000 Ω. Nitrogen in the synthetic wastewater was in the form of NO − 3 -N at the beginning of each cycle.…”

“…Recently, studies have increasingly paid close attention to the use of microbial fuel cell (MFC) to enhance nitrogen removal performance in wastewater treatment . MFC technology is a significantly prospective and completely different approach which has been shown to be effective in water pollution and energy shortage in contaminated water .…”

“…Recently, studies have increasingly paid close attention to the use of microbial fuel cell (MFC) to enhance nitrogen removal performance in wastewater treatment. 19,20 MFC technology is a significantly prospective and completely different approach which has been shown to be effective in water pollution and energy shortage in contaminated water. 21 Additionally, organic matter of anode chamber in MFC is a potential carbon source for nitrogen in the cathode chamber, indicating that it can facilitate denitrification of low C/N wastewater with characteristics such as no external carbon addition, rapid degradation of pollutant and part energy recovery.…”

Development of a Novel Membrane‐less Microbial Fuel Cell (ML‐MFC) with a Sandwiched Nitrifying Chamber for Efficient Wastewater Treatment

“…It has been reported that the fluctuated temperature in environment could affect the electricity generation in MFC by influencing the microbial growth and the metabolic activity. Based on the analyses of some reported studies , , the energy potential in the temperature range of 20–30 °C was speculated, which might be 0.0114–0.0240 kWh/m 3 . Thus, it could be considered that the integrated ML‐MFC in this work had some energy potential in wastewater treatment in the temperature range of 20–30 °C.…”

“…Up to now, in terms of the nitrogen removal by MFC, the researches mainly focused on the reduction of nitrate or nitrite by autotrophic denitrifying bacteria . However, most of the nitrogen exists in actual wastewater in the form of ammonium.…”