An explicit solution of the mathematical model for osmotic desalination process

Do Yeon Kim, Boram Gu, Dae Ryook Yang

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    Membrane processes such as reverse osmosis and forward osmosis for seawater desalination have gained attention in recent years. Mathematical models have been used to interpret the mechanism of membrane processes. The membrane process model, consisting of flux and concentration polarization (CP) models, is coupled with balance equations and solved simultaneously. This set of model equations is, however, implicit and nonlinear; consequently, the model must be solved iteratively and numerically, which is time- and cost-intensive. We suggest a method to transform implicit equations to their explicit form, in order to avoid an iterative procedure. In addition, the performance of five solving methods, including the method that we suggest, is tested and compared for accuracy, computation time, and robustness based on input conditions. Our proposed method shows the best performance based on the robustness of various simulation conditions, accuracy, and a cost-effective computation time.

    Original languageEnglish
    Pages (from-to)1691-1699
    Number of pages9
    JournalKorean Journal of Chemical Engineering
    Volume30
    Issue number9
    DOIs
    Publication statusPublished - 2013 Sept

    Bibliographical note

    Funding Information:
    This research was supported by a grant (07seaheroB02-01-01) from the Plant Technology Advancement Program funded by the Ministry of Land, Transport and Maritime Affairs of the Korean government.

    Keywords

    • Desalination
    • Forward Osmosis
    • Membrane Process
    • Modeling
    • Reverse Osmosis

    ASJC Scopus subject areas

    • General Chemistry
    • General Chemical Engineering

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