3-17. A strain of bacteria has been isolated that can cometabolize tetrachloroethane (TCA). This strain of bacteria can be used for the bioremediation of hazardous-waste sites contaminated with TCA. Assume that the biodegradation rate is independent of TCA concentration (i.e., the reaction is zero order). In a bioreactor it is observed that the rate for TCA removal was 1 ?g/L-min. What water retention time would be required to reduce the concentration from 1 mg/L in the influent to 1 ?g/L in the effluent of a reactor? Assume the reactor is completely mixed.
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