Benzene is dissolved at a constant initial concentration of 350 mg/l and is contained within a landfill in leachate water above bottom liner of the landfill system. It starts to diffuse through the liner at time t = 0. Using Equation Ci (x,t) = Co erfc x/ 2(D*t)0.5 related narrative, and (error function table), calculate the concentration of benzene at its breakthrough location as it diffuses through a 1.5 meter thick liner (x=1.5 meters represents breakthrough location where liner fails of
Benzene is dissolved at a constant initial concentration of 350 mg/l and is contained within a landfill in leachate water above bottom liner of the landfill system. It starts to diffuse through the liner at time t = 0. Using Equation Ci (x,t) = Co erfc x/ 2(D*t)0.5 related narrative, and (error function table), calculate the concentration of benzene at its breakthrough location as it diffuses through a 1.5 meter thick liner (x=1.5 meters represents breakthrough location where liner fails of contaminant is released), after 50 years. Assume D = 10-5 m2/sec (diffusion coefficient in free standing water) and w = 0.7 (coefficient of tortuousity).
Clearly present your assumptions and your value of erf, Select the answer range which best fits the answer you calculate.
Group of answer choices
315 to 350 mg/l
My answer is not in the range of any of the choices my answer.
215 to 314 mg/l
175 to 200 mg/l
370 to 400 mg/l
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