Effect of anti-scale agents on the solubility of CO2 in seawater at temperatures of 60 to 90oC and pressures of 1-2 bar

Khalid Al-Anezi, Chris Somerfield, David Mee, Nick Hankins, Nidal Hilal

Research output: Contribution to journalArticlepeer-review


The objective of this work is to present experimental data that would show the effect of temperature, salinity, pressure and the presence of anti-scale additives on CO2 solubility in seawater. The paper examines the solubility of CO2 in real seawater and real seawater dosed with two different anti-scale additives. The study has been performed at temperatures between 60oC and 90oC and at pressures of 1 and 2 bar. To assess the effect of each anti-scale additive on CO2 gas solubility varying doses, 2-10 ppm of anti-scale additive have been used. For the purpose of the experimentation an experimental rig has been designed to ensure adequate contact between the gas phase and the aqueous phase. The continuous quantitative analysis of CO2 concentration flowing from the experimental rig was measured using a CM-5011 Carbon Coulometer. A mass balance was carried out to calculate the amount of CO2 absorbed into solution; Henry's law constant was then calculated.

Original languageEnglish (US)
Pages (from-to)46-56
Number of pages11
Issue number1-3
StatePublished - Jul 30 2008


  • Anti-scale additives
  • Carbon dioxide solubility
  • Desalination
  • Henry's law constant

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering


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