Sign up & Download
Sign in

Accurate thermodynamic model for the calculation of H2S solubility in pure water and brines

by Zhenhao Duan, Rui Sun, Rong Liu, Chen Zhu
Energy & fuels ()

Abstract

A thermodynamic model calculating the solubility of hydrogen sulfide (H2S) in pure water and in aqueous NaCl solutions (0-6M,273-500 K, 0-200 bar) is presented. The model is based on a specific particle interaction theory for the liquid phase and a highly accurate equation of state for the vapor phase. With this specific interaction approach, this model is able to predict H2S solubility in other systems, such as H2S- H2O-Na2SO4,H2S-H2O-CaCl2,H2S-H2O-KCl, and H2S-seawater, without fitting experimental data from these systems. Comparison of the model predictions with experimental data indicates that the model is within or close to experimental uncertainty, which is about 7% in H2S solubility. The model is programmed and can be downloaded from the website: www.geochem-model.org/programs.htm. Online calculation is also made available on the website: www.geochem-model.org/models.htm. The H2S solubility model can be used together with numerical speciation-solubility modeling codes such as PHREEQC to calculate sulfide mineral solubility in H2S saturated brines. An example calculation for galena solubility is given. 1.

Cite this document (BETA)

Readership Statistics

18 Readers on Mendeley
by Discipline
 
 
 
by Academic Status
 
33% Ph.D. Student
 
17% Researcher (at a non-Academic Institution)
 
17% Researcher (at an Academic Institution)
by Country
 
11% United States
 
6% Iran

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Already have an account? Sign in