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(2) (20) A wastewater mixture that originates from hydraulic fracturing and contains high concentrations treated. For the treatment, the BTEX mixture is dumped, together with

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(2) (20) A wastewater mixture that originates from hydraulic fracturing and contains high concentrations treated. For the treatment, the BTEX mixture is dumped, together with the appropriate microbes that of benzene, toluene, ethylbenzene, and xylene - often collectively referred to as "BTEX"- needs to be degrade (oxidize) the pollutants, in a cylindrical completely mixed reactor and is degraded with an overall experimentally-determined rate constant of 0.4 L mg day. The reactor has 10 m radius and cylinder = har the exposed surface area of the cylinder = 2 x + (2xD. 10 m height. The average initial concentration of BTEX in the wastewater is 100 mg: Volume of a (a) Write a mass balance for the overall concentration of BTEX within the system. How long (in hr) must the process operate to reach final concentration of 50 ug -L'BTEX? (10 points)

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