Table 3.

BET surface areas of biologically oxidized Mn and abiotic Mn oxides

Source of Mn oxideBET surface area (m2/g of Mn oxide)
AvgSD (n = 3)
Leptothrix-oxidized Mna 2247
Abiotic Mn oxide precipitateb 57.60.4
Crystalline powdered MnO2 (ICN)4.70.1
Crystalline β-phase MnO2 (Fisher)0.0480.003
  • a Freeze-dried and aged for 29 days.

  • b Freeze-dried and aged for 13 days.