Quantifying Salt Crystallization Impact on Evaporation Dynamics From Porous Surfaces

Jannesarahmadi, Sahar, Aminzadeh, Milad, Helmig, Rainer, Or, Dani and Shokri, Nima, (2024). Quantifying Salt Crystallization Impact on Evaporation Dynamics From Porous Surfaces. Geophysical Research Letters, 51(22), e2024GL111080-n/a

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  • Sub-type Journal article
    Author Jannesarahmadi, Sahar
    Aminzadeh, Milad
    Helmig, Rainer
    Or, Dani
    Shokri, Nima
    Title Quantifying Salt Crystallization Impact on Evaporation Dynamics From Porous Surfaces
    Appearing in Geophysical Research Letters
    Volume 51
    Issue No. 22
    Publication Date 2024-11-14
    Place of Publication Washington D.C., United States
    Publisher AGU
    Start page e2024GL111080
    End page n/a
    Language eng
    Abstract We investigated the effects of salt crystallization on the dynamics of saline water evaporation in porous media. Water mass loss rates from sand columns supplied with NaCl solutions at three concentrations were monitored under controlled ambient conditions. The formation and evolution of salt crystals over sand surfaces were synchronously imaged optically and thermally. Despite identical experimental and ambient conditions, we observed distinct crystallization dynamics that affected evaporative mass loss rates for similar salt concentrations, highlighting high variability of crystallization and its impact on evaporation. We observed the enhancement of maximum evaporation rates by factors of 3 to 14 under our experimental conditions and attributed this enhancement to the formation and evolution of porous crystalized salts at the surface. Additionally, visible intermittent temperature fluctuations of the salt crust were quantified using thermal imagery attributed to the dynamic processes of crystallization, dissolution and evaporation occurring simultaneously at the surface.
    Copyright Holder Authors
    Copyright Year 2024
    Copyright type Creative commons
    ISSN 0094-8276
    DOI https://doi.org/10.1029/2024GL111080
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    Created: Sat, 25 Jan 2025, 06:01:38 JST by Haideh Beigi on behalf of UNU INWEH