1995 Volume 1 Issue 2 Pages 199-212
Activities and tolerance of some bacteria were investigated under alkaline and reducing conditions for geological disposal. A fermenter was used to control pH and Eh with a liquid culture inoculated with sulphate-reducing bacteria (SRB), methane-producing bacteria (MPB) and sulphur-oxidizing bacteria (SOB). Growth of SRB was obtained at maximum pH 8.6 (Eh －340 mV) or maximum Eh －100 mV (pH 7). Ranges of Eh for the growth of MPB and SOB were estimated to be less than －210 mV at pH8, and more than ＋240 mV at pH 7.5, respectively. Activity for SOB was not observed in the pH range more than 8.
