Corpus ID: 19627445

Environmental Management Where do Henry ’ s constants come from ?

  title={Environmental Management Where do Henry ’ s constants come from ?},
  author={F. L. Smith},
Henry’s law and the Henry’s constant are widely used in chemical and environmental engineering. Unfortunately, many people do not appreciate that the Henry’s “constant” is not a true constant, but instead has a significant non-linear temperature dependence. Ignoring this temperature dependence can lead to serious inaccuracies. This article discusses the temperature dependence of the Henry’s constant and suggests ways of estimating this dependence when data are limited or not available. It also… Expand

Figures from this paper


Henry's Law
William Henry (1774–1836) established the fundamental relationship to define the partitioning of a soluble (or partially soluble) chemical species between gas and liquid phases, at equilibrium, in aExpand
Henry's law revisited
Henry's Law is a commonly used method for calculating phase equilibria, particularly, but not exclusively, the solubility of a gas in a liquid. An earlier article presented various forms of Henry'sExpand
Henry’s Constants and Vapor–Liquid Distribution Constants for Gaseous Solutes in H2O and D2O at High Temperatures
We have developed correlations for the Henry’s constant kH and the vapor–liquid distribution constant KD for 14 solutes in H2O and seven solutes in D2O. The solutes considered are common gases thatExpand
Gas Partitioning of Dissolved Volatile Organic Compounds in the Vadose Zone: Principles, Temperature Effects and Literature Review
Enthalpy and entropy of volatilization from dilute aqueous solutions for 26 volatile organic compounds (VOCs) have been determined using Henry's Law values reported in published literature. Based onExpand
Bond contribution method for estimating henry's law constants
Bond contribution values, used to estimate Henry's law constant (HLC) (air-to-water partition coefficient) from chemical structure, have been determined for 59 chemical bonds by a least-squareExpand
Steam stripping for removal of organic pollutants from water. 2. Vapor-liquid equilibrium data
To support the simple tools for steam stripping presented in part 1, part 2 here discusses the estimation of the infinite-dilution vapor-liquid equilibrium constants K∞ for organic pollutants inExpand
A new equation of state for correlation and prediction of standard molal thermodynamic properties of aqueous species at high temperatures and pressures
A new expression for partial molar volumes of aqueous solutes at infinite dilution has been developed in an empirical form based on Fluctuation Solution Theory for use over wide ranges of temperatureExpand
Thermodynamic description of aqueous nonelectrolytes at infinite dilution over a wide range of state parameters
Abstract A new, virial-like equation of state (EoS) for describing the thermodynamic properties of aqueous nonelectrolytes at infinite dilution is proposed. It is based on the accurate EoS for aExpand
Henry's law constant of organic compounds in water from a group contribution model with multipole corrections
Abstract Group contribution methods are commonly used for the estimation of Henry's law constants when no experimental data are available. However, these methods are of limited accuracy for complexExpand
Further Development of Modified UNIFAC (Dortmund): Revision and Extension 5
For the estimation of thermodynamic properties of pure compounds and mixtures, often the group contribution concept is applied. A successful and well-known group contribution model for the predictionExpand