Thiobacillus ferrooxidans is the main bacteria used in biological desulfurization technology. What is the living condition of the strain? How can we improve the reaction efficiency of Thiobacillus ferrooxidans? Let's have a look.
Thiobacillus ferrooxidans is an important leaching microorganism, which is acidophilic and suitable for medium temperature environment. It widely exists in acidic mine water and acidic environment containing iron or sulfur. In recent years, it has been widely used in biological desulfurization technology. So what should we pay attention to in the cultivation of Thiobacillus ferrooxidans?
According to the research, 1. Thiobacillus ferrooxidans is suitable to grow at the initial pH of 2.0. Under this condition, the bacteria quickly adapt to the environment, can normally absorb nutrients, synthesize new protoplasts, and form a certain amount of enzymes necessary for bacteria.
2. The optimum culture temperature of Thiobacillus ferrooxidans is 30 C. Within these two temperature ranges, the enzyme activity is high, the biochemical reaction rate and growth rate of cells are fast; but the important components of microbial organisms, such as nucleic acid and protein, are sensitive to temperature and can be irreversibly destroyed with the increase of temperature.
3. When the inoculation amount increased, the initial number of bacteria in the culture medium increased, and Thiobacillus ferrooxidans multiplied rapidly. However, due to the limited nutrients in the culture medium, excessive bacterial liquid was added to affect the growth and reproduction of bacteria. It showed that the optimal inoculation amount of Thiobacillus ferrooxidans was 10%.
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2019-03-13
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