Abstract:A novel modular continuous flow bioreactor system was designed to enhance the tolerance of bacteria to high concentration of heavy metal. This study evaluated the combined effect of high and low concentration levels of zinc, ferrous iron, copper, sulfate, and carbon source on the heavy metals and sulfate removal efficiencies. Statistically valid Plackett–Burman design (PBD) of experiments was employed to carry out this study. A maximum removal for each of zinc, copper, iron, and sulfate was 99.08%, 99.13%, 94.… Show more
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