Results and Discussion Growth Characteristics of the Isolated Microorganism. The growth pattern of P. putida CH11 in the
modified basal medium is shown in Figure 2. P. putida CH11 is a chemoorganoheterotrophic baterium that can
oxidize sulfur compounds without obtaining energy from the process (Kuenen et al., 1985). During the initial 5
days of cultivation, both the thiosulfate (S2O32-) concentration and the total organic carbon (TOC) concentration
decreased, but the cell number and sulfate (SO42-) concentration increased (Figure 2). These results indicate
the specific uptake rates of thiosulfate and glucose are 3.5 10-11 g S/cellâday and 4.6 10-11 g C/cellâday,