A relative headspace method for Henry's constants of volatile organic compounds

Chai, Xin‐Sheng; Falabella, James B.; Teja, Amyn S.

doi:10.1016/j.fluid.2005.02.006

Cited by 37 publications

(37 citation statements)

References 17 publications

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“…The time to attain equilibration between the headspace and the aqueous solution was obtained by analyzing the headspaces over test samples as a function of time until steady-state conditions were attained [13]. Figure S1 in the Supporting Information plots the GC-MS peak height (m/z, 51) versus time for each series of test samples and clearly shows that the peak height approaches a constant value after about 40 min for each series of the test samples.…”

Section: Determination Of Henry's Law Constantsmentioning

confidence: 99%

Solubility and hydrolysis of HCFC‐22 (CHF₂Cl): Upward revision of rate constants for aqueous reactions of CHF₂Cl with OH⁻ at elevated temperature

Kutsuna

Hori

Shimono³

2011

Int J of Chemical Kinetics

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Henry's law constants of CHF2Cl in water at temperature T in K, KH(T) in M atm−1, were determined to be ln(KH(T))=−(11.1±1.5)+((2290±500)/T) at 313–363 K by means of a phase ratio variation headspace method. The temperature‐dependent rate constants for aqueous reactions of CHF2Cl with OH−, k(T) in M−1 s−1, were also determined to be 3.7×1013exp(−(11, 200/T)) at 313–353 K, by considering the gas–water equilibrium, the aqueous reaction at room temperature, and liquid‐phase diffusion control. The liquid‐phase diffusion control was approximated with a one‐dimensional diffusion first‐order irreversible chemical reaction model. The k(T) value we determined is 10 times (at 353 K) or 3 times (at 313 K) as large as the value reported (R. C. Downing, Fluorocarbon Refrigerants Handbook, Prentice Hall: Englewood Cliffs, NJ, 1988). This upward revision of k(T) indicates that the removal efficiency of CHF2Cl directly through the hydrolysis (CHF2Cl + OH−) is higher than previously expected at temperatures, such as 353 K, relevant to wet flue gas cleaning systems for ozone‐destruction substance‐destruction facilities. © 2011 Wiley Periodicals, Inc. Int J Chem Kinet 43: 639–647, 2011

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Section: Determination Of Henry's Law Constantsmentioning

confidence: 99%

Solubility and hydrolysis of HCFC‐22 (CHF₂Cl): Upward revision of rate constants for aqueous reactions of CHF₂Cl with OH⁻ at elevated temperature

Kutsuna

Hori

Shimono³

2011

Int J of Chemical Kinetics

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“…2. Comparison of temperature-averaged Setchenov constants and D on a molality basis for ( ) ketones + water + Na 2 SO 4 [3]; ( ) ketones + water + NaCl [30]; ( ) 1-alkanols + water + Na 2 SO 4 [30]; ( ) methanol + water + Na 2 SO 4 [4]; ( ) methanol + water + Na 2 CO 3 [4]; ( ) sulfides + water + Na 2 SO 4 ; (♦) trichloroethylene + water + NaCl [7]; ( ) dichloromethane + water + NaCl [7]; (᭹) chloroform + water + NaCl [7]; (×) 1,2-dichloroethane + water + NaCl [7]; (+) benzene + water + NaCl [7]. Table 3.…”

Section: Resultsmentioning

confidence: 99%

“…Consequently, Henry's constants are often employed to estimate VOC emissions from liquids using, for example, computer programs such as WATER9 (Wastewater and Treatment Emissions Routines) [1] mandated by the United States Environmental Protection Agency (USEPA) to ensure compliance with environmental regulations [2]. The presence of salts in these streams could lead to significant changes in Henry's constants [3] and must be taken into account in the calculations [2]. Common salts such as sodium chloride, sodium sulfate, and sodium carbonate, gener- * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

“…ally salt out organic compounds from water, and would thereby increase VOC emissions [3][4][5] resulting in a need for different remediation strategies for wastewater streams containing salts or for oil spills in saline waters.…”

Section: Introductionmentioning

confidence: 99%

“…In spite of the importance of solubility data, however, there are relatively few measurements of Henry's constants of VOCs in salt solutions [3][4][5][6][7][8]. This has hampered the development of predictive techniques, particularly techniques that cover a wide range of pressure, temperature, and salt concentration.…”

Section: Introductionmentioning

confidence: 99%

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Henry's constants of gases and volatile organic compounds in aqueous solutions

Falabella

Kizzie

Teja

2006

Fluid Phase Equilibria

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Structure–solubility and solvation energy relationships for propanol in different solvents using structural and empirical scales

Honarasa

Yousefinejad

Nekoeinia

2021

J Chinese Chemical Soc

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Research on the solubility of n‐propanol in different solvents is important because of the wide applications of n‐propanol in cosmetics, cleaning, printing, coatings, and chemical industries. The goal of this research was to investigate the structural or empirical properties of different solvents on the Ostwald solubility coefficient of n‐propanol. In this research, two different approaches, that is, linear solvation energy relationship (LSER) and quantitative structure–property relationship (QSPR), have been used to predict and descript the gas‐solvent partition coefficient of n‐propanol, as its solubility index, in 36 different solvents. In the suggested LSER model, the role of solvent–solute interactions on the solubility of n‐propanol as a physicochemical property can be investigated. In addition to structural features, which were used in the QSPR model, the interpretation of the LSER model showed that the donor number of solvents, modified polarity scale of solvents, and entropy of solvation are three important parameters in the Ostwald solubility coefficient of n‐propanol.

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A relative headspace method for Henry's constants of volatile organic compounds

Cited by 37 publications

References 17 publications

Solubility and hydrolysis of HCFC‐22 (CHF₂Cl): Upward revision of rate constants for aqueous reactions of CHF₂Cl with OH⁻ at elevated temperature

Solubility and hydrolysis of HCFC‐22 (CHF₂Cl): Upward revision of rate constants for aqueous reactions of CHF₂Cl with OH⁻ at elevated temperature

Henry's constants of gases and volatile organic compounds in aqueous solutions

Structure–solubility and solvation energy relationships for propanol in different solvents using structural and empirical scales

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A relative headspace method for Henry's constants of volatile organic compounds

Cited by 37 publications

References 17 publications

Solubility and hydrolysis of HCFC‐22 (CHF2Cl): Upward revision of rate constants for aqueous reactions of CHF2Cl with OH− at elevated temperature

Solubility and hydrolysis of HCFC‐22 (CHF2Cl): Upward revision of rate constants for aqueous reactions of CHF2Cl with OH− at elevated temperature

Henry's constants of gases and volatile organic compounds in aqueous solutions

Structure–solubility and solvation energy relationships for propanol in different solvents using structural and empirical scales

Contact Info

Product

Resources

About

Solubility and hydrolysis of HCFC‐22 (CHF₂Cl): Upward revision of rate constants for aqueous reactions of CHF₂Cl with OH⁻ at elevated temperature

Solubility and hydrolysis of HCFC‐22 (CHF₂Cl): Upward revision of rate constants for aqueous reactions of CHF₂Cl with OH⁻ at elevated temperature