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�- re <br /> MASS BALANCE ANALYSIS <br /> Opprating Parameters: Liquid loading - 1.2 gpm (continuous) <br /> Vapor loading - 400 scfm <br /> Total Nonmethane Hydro- <br /> carbon concentration - <0.001 ppm <br /> Assumptions: 1) 100 percent transfer of contaminants to vapor <br /> phase <br /> 2) Vapor influent is not contaminated <br /> Mass Balance Equation <br /> (Lin x Xin) + (vin x Yin) = Gout x Xout) + Nut x Yout) <br /> Where, <br /> L = Liquid Loading = 1.2 gpm <br /> X = Contam;:nant concentration, liquid phase = <0.001 mg/1 <br /> V = Vapor Loading = 400 scfm <br /> Y = Contaminant Concentration, vapor phase <br /> and, <br /> Vin = Xout = O <br /> Simplifying then, <br /> Vout x Yout = Lin x Xin = Contaminant vapor .Iischarge (lbs/day) <br /> Vout x Yout = <br /> (1.2 gal/min) (<0.001 mg/1) 1 gm x 3.7851 x _ 1 lb_ x 1440 min <br /> 1000 mg gal 453.6 gm day <br /> Vout x Yout = <0.000014 lhs�day_ <br /> Rearranging the mass balance equation and solving for the concentration <br /> of nonmethans hydrocarbons in the vapor discharge (Pout) . <br /> Yout = k'n x xin 1.2 rill/min x <0.001 ma/1 <br /> �ut 400 t Amin x 7.43 ga)/tt3 <br /> Yout = <0.0000004 mg/l nonemethane hydrocarbons <br />