TY - JOUR
T1 - Vapor-liquid equilibrium in dilute aqueous solutions of NH3-SO2-CO2
AU - Inoue, Masanori
AU - Yoshida, Takanori
AU - Aoki, Hideyuki
AU - Inomata, Hiroshi
AU - Miura, Takatoshi
PY - 1999/9
Y1 - 1999/9
N2 - In the design and analysis on air washer system with pure water, we need to estimate the vapor-liquid equilibrium of related systems. In this study, the vapor-liquid equilibrium for dilute aqueous solutions of volatile weak electrolytes is examined by numerical calculation and experimens. Equilibrium composition in vapor and liquid phase is calculated for NH3-CO2-H2O, SO2-CO2-H2O and NH3-SO2 -CO2-H2O systems. Total solute concentration, pH and vapor phase partial pressure of NH3 and SO2 are determined in dilute aqueous solutions from 10-6 to 10-3 mol/kg-H2O in 23°C. Equilibrium composition is predicted and is in good agreement with experimental results in each multicomponent aqueous system. As a result, ionic dissociation and Henry's constants quoted from Edwards' correlation are available even in dilute aqueous solutions of volatile weak electrolytes. These results allow estimate of ionic dissociation and vapor-liquid equilibrium in dilute aqueous solutions of volatile weak electrolytes.
AB - In the design and analysis on air washer system with pure water, we need to estimate the vapor-liquid equilibrium of related systems. In this study, the vapor-liquid equilibrium for dilute aqueous solutions of volatile weak electrolytes is examined by numerical calculation and experimens. Equilibrium composition in vapor and liquid phase is calculated for NH3-CO2-H2O, SO2-CO2-H2O and NH3-SO2 -CO2-H2O systems. Total solute concentration, pH and vapor phase partial pressure of NH3 and SO2 are determined in dilute aqueous solutions from 10-6 to 10-3 mol/kg-H2O in 23°C. Equilibrium composition is predicted and is in good agreement with experimental results in each multicomponent aqueous system. As a result, ionic dissociation and Henry's constants quoted from Edwards' correlation are available even in dilute aqueous solutions of volatile weak electrolytes. These results allow estimate of ionic dissociation and vapor-liquid equilibrium in dilute aqueous solutions of volatile weak electrolytes.
KW - Dilute solution
KW - Ionic dissociation equilibrium
KW - Multicomponent system
KW - Vapor-liquid equilibrium
KW - Volatile weak electrolyte
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U2 - 10.1252/kakoronbunshu.25.677
DO - 10.1252/kakoronbunshu.25.677
M3 - Article
AN - SCOPUS:33750848422
SN - 0386-216X
VL - 25
SP - 681
EP - 682
JO - Kagaku Kogaku Ronbunshu
JF - Kagaku Kogaku Ronbunshu
IS - 5
ER -