Extension of Valderrama-Patel-Teja equation of state to modelling single and mixed electrolyte solutions

Rahim Masoudi, Mosayyeb Arjmandi, Bahman Tohidi

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    The Valderrama modification of Patel-Teja equation of state (VPT EoS) has been extended to predicting fluid phase equilibria in the presence of single and mixed electrolyte solutions at high-pressure conditions. Salts have been introduced as components in the EoS by calculating their EoS parameters from corresponding cation and anion parameters. A non-density dependent mixing rule is used for calculating a, b, and c parameters of the EoS. The inclusion of salts in the EoS resulted in the omission of the Debye-Hückel electrostatic contribution term in the fugacity coefficient calculations. Water-salt binary interaction parameters (BIPs) are optimised using freezing point depression and boiling point elevation data of aqueous electrolyte solutions. Gas solubility data in aqueous electrolyte solution are used for optimising salt-gas BIPs. The predictions of the model have been compared with independent experimental data, demonstrating the reliability of the approach. © 2003 Elsevier Science Ltd. All rights reserved.

    Original languageEnglish
    Pages (from-to)1743-1749
    Number of pages7
    JournalChemical Engineering Science
    Volume58
    Issue number9
    DOIs
    Publication statusPublished - May 2003

    Keywords

    • Electrolyte
    • Equation of state
    • Gas solubility
    • Modelling
    • Phase equilibria
    • Solutions

    Fingerprint

    Dive into the research topics of 'Extension of Valderrama-Patel-Teja equation of state to modelling single and mixed electrolyte solutions'. Together they form a unique fingerprint.

    Cite this