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T� <br /> MASS BALANCE ANALYSIS <br /> operating Parameters: Liquid loading 1.0 gpm (continuous) <br /> Vapor loading - 90 scfm <br /> Total Nonmethane Hydro- <br /> carbon concentration - <0.001 ppm <br /> i <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) _ (Lout x Xout) + (Vout x Pout) <br /> Where, <br /> L = Liquid Loading = 1.0 qpm <br /> x = Contaminant concentration, liquid phase = <0.001 mg/l <br /> V = Vapor Loading = 90 scfm <br /> Y = Contaminant Concentration, vapor phase <br /> and, <br /> i <br /> Yin = Xout = 0 <br /> Simplifying then, <br /> Vout x Yout = Lin x Xin = Contaminant vapor discharge (lbs/clay) <br /> Vout x Yout = <br /> (1.0 gal/min) (<0.001 mg/1) __ 1 mij__ x 2.7851 x 1 lb x 1440 min <br /> 4 1000 mg gal 453.6 gm day <br /> f <br /> Vout x Pout = <0.000012__lbs/day i <br /> Rearranging the mass balance equation and solving for the concentration <br /> of nonmethane hydrocarbons in the vapor discharge (Pout) . <br /> Yout = !in x ?din = 1.Oalal/min x <0.001�_ <br /> taut 90 ft3/min x 7.48 gal/ft <br /> rJ <br /> Yout = <0.0000015 mg/1 nonemethane hydrocarbons <br /> ,r <br /> GltOL'XU14,S1'F.K <br /> TEL'HM WOGY.INC. <br />