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MASS BALANCE ANALYSIS <br /> Operating Parameters: Liquid loading - 0.9 gpm (continuous) <br /> Vapor loading - 90 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) (Lauf x Xnut) + (Vout x Yout) <br /> Where, . <br /> L = Liquid Loading = 0.9 gpm <br /> X = Contaminant concentration, liquid phase = <D.001 mg/l <br /> V = Vapor Loading = 90 scfm <br /> Y = Contaminant Concentration, vapor ph&se <br /> and, <br /> Vin = Xout O <br /> Simplifying then, <br /> Vout x Yout = Lin x Xin = Contaminant vapor discharge (lbs/day) <br /> Vout x Yout <br /> (0.9 gal/min) (<0.001 mg/1) 1 gm_ x 3.7851 x 3. lb x 1440 min <br /> 1000 mg gal 453.6 gm day <br /> Vout x Yout = <0.0000011 lbs, <br /> /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 Ain = 0.9 aal/minx <0.001 mcl[l <br /> out 90 ft3/min x 7.48 gal/ftp <br /> Yout = <0.0000011 mg/l nonemethane hydrocarbons <br /> ��' Gk�,k�uirnekr <br />