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Subsurface Transport Behavior of Micro-Nano Bubbles and Potential Applications for Groundwater Remediation

Author

Listed:
  • Hengzhen Li

    (Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China)

  • Liming Hu

    (Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China)

  • Dejun Song

    (In Situ Solution China Co., Ltd, Nanjing 211106, China)

  • Abir Al-Tabbaa

    (Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK)

Abstract

Micro-nano bubbles (MNBs) are tiny bubbles with diameters on the order of micrometers and nanometers, showing great potential in environmental remediation. However, the application is only in the beginning stages and remains to be intensively studied. In order to explore the possible use of MNBs in groundwater contaminant removal, this study focuses on the transport of MNBs in porous media and dissolution processes. The bubble diameter distribution was obtained under different conditions by a laser particle analyzer. The permeability of MNB water through sand was compared with that of air-free water. Moreover, the mass transfer features of dissolved oxygen in water with MNBs were studied. The results show that the bubble diameter distribution is influenced by the surfactant concentration in the water. The existence of MNBs in pore water has no impact on the hydraulic conductivity of sand. Furthermore, the dissolved oxygen (DO) in water is greatly increased by the MNBs, which will predictably improve the aerobic bioremediation of groundwater. The results are meaningful and instructive in the further study of MNB research and applications in groundwater bioremediation.

Suggested Citation

  • Hengzhen Li & Liming Hu & Dejun Song & Abir Al-Tabbaa, 2013. "Subsurface Transport Behavior of Micro-Nano Bubbles and Potential Applications for Groundwater Remediation," IJERPH, MDPI, vol. 11(1), pages 1-14, December.
    • Handle: RePEc:gam:jijerp:v:11:y:2013:i:1:p:473-486:d:31747
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    References listed on IDEAS

    as
    1. Jay N. Meegoda & Liming Hu, 2011. "A Review of Centrifugal Testing of Gasoline Contamination and Remediation," IJERPH, MDPI, vol. 8(8), pages 1-18, August.
    2. Attard, Phil & Moody, Michael P. & Tyrrell, James W.G., 2002. "Nanobubbles: the big picture," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 314(1), pages 696-705.
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