The prospects for MFC technology may lie in using the energy derived from oxidizing wastes at the anode, driving useful reactions at the cathode, in scaled-up systems to maximize potential economic benefits.
The supercritical water oxidation (SCWO) is a technology that takes advantage of the special properties of water in the surroundings of critical point of water to completely oxidize wastes in residence times lower than 1 min.
Experiments were conducted to evaluate the rate and effectiveness with which ozone oxidized several different waste materials.
The experiments showed that the human wastes oxidized using reduced amounts of 30% H2O2: 1 ml/g of feces and 0.25 ml/ml of urine were still sterile.
The purpose of this study was to explore the possibilities of using human wastes oxidized to different degrees to grow plants cultivated on the soil-like substrate (SLS).
Then we investigated the effects produced by human wastes oxidized to different degrees on growth and development of wheat plants and on the composition of microflora in the SLS.
Thus, insufficiently oxidized sterile human wastes added to the irrigation solutions significantly affect the composition of the microbiological component of these solutions, which can ultimately unbalance the system as a whole.
Extensive research has shown that these complex substrates such as agro wastes are oxidized by different group of microorganisms and cause generation of electricity.
For example, the emergence of chemoautotrophic methanogens provided a reduced source of organic "waste" to be oxidized by specific heterotrophs.
