Researchers from the Shenzhen Institute of Advanced Technology (SIAT) of the Chinese Academy of Sciences (CAS) have found that a magnetic field can help enhance the generation of synthetic biogas. The researchers investigated the effects of using a static magnetic field (SMF) in the presence of the additive titanium dioxide-foamed nickel (TiO_2-FNi) with bioaffinity during the anaerobic digestion and methanation of corn stover. In this process, TiO_2-FNi is deposited on the bottom of the reactor in bulk form, and permanent magnets provide the external magnetic field environment. The additive TiO_2-FNi used in this study is a porous conductive material. Its porous structure and multi-grooved surface, along with the non-biotoxicity of TiO_2, increase its suitability for the adhesion of flora and the formation of electroactive biofilms that promote electron transfer. The intensity of the magnetic field is regulated by controlling the distance between the permanent magnet and the bottom of the reactor. The cooperation with the magnetic field further promotes the rate of cell proliferation and glycolysis.
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