Investigating the Effects of Co2O3, and ZnO, and Fe3O4 Nanoparticles on Methane yield during anaerobic Co-digestion of municipal organic solid waste using BMP Test.

The use of organic fraction municipality solid waste (OFMSW) in the process of anesthetic digestion (AD) can be a good way to manage and extract energy. In the present study, the effect of adding ZnO nanoparticles (ZnO) nanoparticles and iron oxide nanoparticles (Fe3O4) and cobalt oxide nanoparticles (Co2O3) on the production of biomass and biomass from anaerobic digestion organic fraction municipality solid waste (OFMSW) and cattle manure (CM) reviewed and studied. The results showed that using nanoparticles with low and essential nutrients with optimal concentrations in digesters could potentially have positive effects on the stability of the digestion process, the reduction of further impurities and pollutants in the biogas, reduction of volatile fatty acids (VFA) and biogas production has been increased. Due to the toxicity of ZnO nanoparticles on bacterial bacteria in the first days, it directly affected the toxicity of bacterial bacteria and reduced the production of biogas. But after a few days, bacterial bacteria became familiar with the toxicity of added substances and were able to survive in such conditions, and increased the production of biogas. The anaerobic digestion process is highly dependent on nanoparticles. Increasing the iron oxide nanoparticles (Fe3O4) and ZnO nanoparticles (ZnO) and reducing the cobalt oxide nanoparticles (Co2O3) have a positive effect on the biogas production rate and methane yield. The best concentration of nanoparticles for the biogas production rate and maximum methane yields are 20-28 milligrams of iron oxide nanoparticles (Fe3O4) for zinc (ZnO) 0.8 to 1.5 nanoparticles and 0.25 to 0.35 milligrams for cobalt oxide nanoparticles (Co2O3). Most produced biogas and methane were obtained during the digestion process at the points mentioned..