The initial pH of the culture medium also affected the growth condition of the bacteria, and the growth of the bacteria at pH 5–9 showed an overall trend of increasing and then decreasing; the species had the highest number of bacteria at pH = 7, indicating that it is more favorable for the growth of the bacteria in a neutral initial environment.
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Efficient removal of Cr(iii) by microbially induced calcium carbonate precipitation.
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The sentences
The OD 600 showed an increasing trend as the bacterial powder continued to increase.