Divergent impacts of antibiotics on ferrihydrite biotransformation by Shewanella oneidensis : electron transfer regulation and iron redox cycling

Key Points

• This research examines how different antibiotics affect the biotransformation of ferrihydrite by Shewanella oneidensis, focusing on electron transfer.
• Investigated the role of antibiotics in electron transfer processes.
• Examined the conversion of ferrihydrite to different iron minerals like magnetite and goethite.
• Analyzed the electron flux and redox reactions in the presence of specific antibiotics.
• Sulfamethoxazole (SMX) enhanced electron flow and facilitated the conversion of ferrihydrite to magnetite.
• Chloramphenicol (CAP) competed for electrons, resulting in the trapping of ferrihydrite as goethite.

Abstract