Iron can be microbially extracted from Lunar and Martian regolith simulants and 3D printed into tough structural materials
Fig 2
Evaluation of the toxicity of different Lunar and Martian regolith simulants to S. oneidensis under aerobic and anaerobic conditions.
Colony forming units (CFU/μL) are depicted on the left axis and the O.D.600 measurements on the right axis. The yellow, blue, red, green, and grey bars represent regolith concentrations of 0, 0.1, 1, 10, and 100 g/L respectively. Optical density at 600 nm of control samples without S. oneidensis were subtracted from the O.D.600 measurements. The error bars represent the standard error of the mean. Aerobic growth behavior of Shewanella oneidensis was measured in the presence of JSC-Mars1 (A), EAC-1 (C) and JSC-2A (E), and anaerobic growth of Shewanella oneidensis was measured in the presence of JSC-Mars1 (B), EAC-1 (D) and JSC-2A (F).