Optimization of solar-powered reverse osmosis desalination pilot plant using response surface methodology

M. Khayet, M. Essalhi, C. Armenta-Déu, C. Cojocaru, Nidal Hilal

    Research output: Contribution to journalArticle

    Abstract

    A solar thermal and photovoltaic-powered reverse osmosis (RO) desalination plant has been constructed and optimized for brackish water desalination. The central composite experimental design of orthogonal type and response surface methodology (RSM) have been used to develop predictive models for simulation and optimization of different responses such as the salt rejection coefficient, the specific permeate flux and the RO specific performance index that takes into consideration the salt rejection coefficient, the permeate flux, the energy consumption and the conversion factor. The considered input variables were the feed temperature, the feed flow-rate and the feed pressure. Analysis of variance (ANOVA) has been employed to test the significance of the RSM polynomial models. The optimum operating conditions have been determined using the step adjusting gradient method. An optimum RO specific performance index has been achieved experimentally under the obtained optimal conditions. The RO optimized plant guarantees a potable water production of 0.2 m3/day with energy consumption lower than 1.3 kWh/m3.

    Original languageEnglish (US)
    Pages (from-to)284-292
    Number of pages9
    JournalDesalination
    Volume261
    Issue number3
    DOIs
    StatePublished - Jan 1 2010

    Fingerprint

    Reverse osmosis
    Desalination
    Pilot plants
    desalination
    Energy utilization
    Salts
    Fluxes
    salt
    Gradient methods
    Analysis of variance (ANOVA)
    brackish water
    variance analysis
    Potable water
    Drinking Water
    experimental design
    Design of experiments
    drinking water
    Flow rate
    response surface methodology
    pilot plant

    Keywords

    • Desalination
    • Optimization
    • Response surface methodology
    • Reverse osmosis
    • Solar energy

    ASJC Scopus subject areas

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

    Cite this

    Optimization of solar-powered reverse osmosis desalination pilot plant using response surface methodology. / Khayet, M.; Essalhi, M.; Armenta-Déu, C.; Cojocaru, C.; Hilal, Nidal.

    In: Desalination, Vol. 261, No. 3, 01.01.2010, p. 284-292.

    Research output: Contribution to journalArticle

    Khayet, M. ; Essalhi, M. ; Armenta-Déu, C. ; Cojocaru, C. ; Hilal, Nidal. / Optimization of solar-powered reverse osmosis desalination pilot plant using response surface methodology. In: Desalination. 2010 ; Vol. 261, No. 3. pp. 284-292.
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