Enhanced oxygen reducing biocathode electroactivity by using sediment extract as inoculum

Toxicity warning and online monitoring of disinfection by-products in water by electroautotrophic biocathode sensors

“…In addition, studies ( Liu et al, 2021 ) have shown its resistance to various antibiotics, such as ceftriaxone, penicillin and kanamycin, as well as the presence of genes associated with copper homeostasis in the genome, suggesting that this strain has a strong potential to compete with other microorganisms. Nitrospiraceae is a well-reported cathodic electroactive bacterium ( Garcíamuñoz et al, 2011 ; Wu et al, 2017 ), whose autotrophic nitrite oxidation function ( Daims et al, 2001 ) in denitrifying biocathodes ( Kelly and He, 2014 ) can promote power production while synergizing nitrogen metabolism with other denitrifying bacteria (such as Nitrosomonas ) ( Liao et al, 2018a ). The substantial enrichment of this bacterium after CDBP testing suggested that long-term operation and external environmental disturbances can stimulate the potential of highly active cathodic bacteria, which further explained the intrinsic reasons for the improved electrochemical performance as well as for the decrease in sensitivity in the sensors after repeated CDBP exposure.…”

Catalysis of the electrochemical oxygen reduction reaction (ORR) by animal and human cells

“…In this framework, ORR is most often achieved by multispecies microbial biofilms formed directly in natural media (seawater [4,[8][9][10][11], wastewater [12], etc. ), or in synthetic media inoculated with natural multi-species inocula [13][14][15][16][17][18][19]. Considerable current densities, of the order of an A/m 2 , and high half-wave potentials, above 0.4 V/ SHE, have been reached [14,15,17,19].…”

The influence of organic pollutant load and external resistance on the performance of a solid phase microbial fuel cell fed orange peel wastes

“…This phenomenon might be due to the formation of an electrochemically active biofilm on the anode surfaces. 19,20 After 35 days of operation, a maximum voltage of 670-700 mV was produced, in comparison, the control SPMFCs' voltage decreased to 250-280 mV. Later, the SMFCs reached a stable voltage and they continued operating for 25 more days (Figure 2).…”