Regeneration of spent NOx scrubber liquor using a dual-chamber microbial fuel cell

Electricity generation, salinity, COD removal and anodic biofilm microbial community vary with different anode CODs in a microbial desalination cell for high-salinity mustard tuber wastewater treatment

“…The high COD in MTWW could be used as a fuel for the microorganisms in the anode biolm, which facilitated COD removal from MTWW aer desalination and electricity generation in the MFCs. 30 When coupled with the dual-chamber MFCs, the COD of the MTWW aer desalination was eliminated, and the COD removal rates were 86.2% AE 2.5%, 83.0% AE 2.0% and 84.3% AE 2.4% (Fig. 5b).…”

A review: Biological technologies for nitrogen monoxide abatement

“…In some reactors, when the operation was continuous and the reduction of Fe(III)EDTA − and Fe(II)EDTA − NO 2− took place simultaneously, no high reduction efficiencies were obtained for either one or the other and were potentially achieved for neither. For example, Sun et al (2015) achieved an RE of only 62% and 58% for Fe(III)EDTA − and Fe(II)EDTA − NO 2− , respectively.…”

“…for the regeneration of the chelating agent, while the current is only a promoting agent for this regeneration. Furthermore, at high concentrations, Fe(III)EDTA − reduction can be affected by the microbial inhibition of Fe(II)EDTA − NO 2− , and vice versa (Sun et al, 2015;Zhou et al, 2012). In some reactors, when the operation was continuous and the reduction of Fe(III)EDTA − and Fe(II)EDTA − NO 2− took place simultaneously, no high reduction efficiencies were obtained for either one or the other and were potentially achieved for neither.…”