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� � x <br /> MASS BALANCE ANALYSIS 4` � <br /> Operating Parameters: Liquid loading - 0.6 gpm (continuous <br /> Vapor loading - 90 sc£m <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) _ (Lout r. Xout) + (Vout x Yout) <br /> Where, <br /> L = Liquid Loading = 0.6 gpm <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 /> Yin = Xcut = O <br /> Simplifying then, <br /> Vout x Yout = Lin x Xin = Contaminant vapor discharge (lbs/day) <br /> Vout x YQut = <br /> (0.6 gal/min) (.0.001 mg/1) 1 am_ x 3.7851 x 1 lb x 1440 min <br /> 1000 mg gal 453.6 gm day <br /> Vout x Yout = <0.0000029 lbs/day <br /> Rearranging the mass balance equation and solving for the concentration <br /> of nonmethane hydrocarbons in the vapor discharge (Yout) . <br /> Yout = Lin x XI _ _ 0.6raal./min x <0.00.1 mg/l <br /> bout 90 ft3/min x 7.48 gal/ft <br /> Yout = <0.0000009 mg/1 nonemethane hydrocarbons <br /> Gk0UNO%%'ATER <br /> TECHNOLOGY,INC. <br />