Abstract:

Anaerobic digestion, one of the processes commonly used to stabilize sludge produced in wastewater treatment plants and to generate renewable energy, is a process performed by many groups of microorganisms. Nowadays, advances in nanotechnology, a new field for scientific research, have enabled nanoparticles to be used in many areas. The effects of nanoparticles on methane production and stabilization in anaerobic digesters have become a remarkable issue in recent years. One of the most known and widely used nanoparticles is Fe3O4. In this study, the effects of magnetic nanoparticles, especially Fe3O4 magnetic nanoparticles, on biogas production in anaerobic digesters were investigated by giving information about nanoparticle applications. In addition, Fe3O4 magnetic nanoparticle was synthesized in the laboratory using the co-precipitation method and its magnetic properties were evaluated. After Fe3O4 was synthesized, the effects of Fe3O4 dose on biogas production were investigated by adding different concentrations to anaerobic digesters. Biogas increased with the increase in Fe3O4 concentration, and the average biogas volume in the control devices without Fe3O4 was 428.9 mL, while 572.8 mL biogas was obtained with the addition of 0.3 g/L Fe3O4.

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