Study of CO2 Solubility in Brine under Different Temperatures and Pressures

Hossein Hamidi; Nur Farah Ain Mohd Atib; Amin Azdarpour; Erfan Mohammadian

doi:10.4028/www.scientific.net/AMR.1113.440

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1113Study of CO2 Solubility in Brine under Different...

Study of CO₂ Solubility in Brine under Different Temperatures and Pressures

Abstract:

The solubility of CO₂ in water and aqueous solutions of NaCl, KCl, CaCl₂, NaCl+KCl (weight ratio= 1:1), NaCl+CaCl₂ (weight ratio= 1:1), KCl+CaCl₂ (weight ratio= 1:1) and NaCl+KCl+CaCl₂ (weight ratio= 1:1:1) was determined experimentally at 35, 45 and 55°C up to 16 MPa and the concentration of the salt was up to 14.3 wt% while in simulation the salt ions of Na⁺, K⁺, Ca²⁺, and Cl^- was determined at wide temperature-pressure-ionic strength range (273 to 533 K, from 0 to 2000 bar, and from 0 to 4.5 molality of salts). Based on experiment data, the solubility increased with increase in pressure but decreased with increasing the temperature and salt concentration. Meanwhile, the model also predicted the CO₂ solubility in seawater at two phase coexistence (vapour-liquid or liquid-vapor) and at three-phase coexistence (CO₂ hydrate-liquid water-vapor CO₂).

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Periodical:

Advanced Materials Research (Volume 1113)

Pages:

440-445

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1113.440

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Online since:

July 2015

Authors:

Hossein Hamidi*, Nur Farah Ain Mohd Atib, Amin Azdarpour, Erfan Mohammadian

Keywords:

CO₂ Sequestration, CO₂ Solubility, Salt Solution

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