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Adsorption-based atmospheric water harvesting device for arid climates

Author

Listed:
  • Hyunho Kim

    (Massachusetts Institute of Technology)

  • Sameer R. Rao

    (Massachusetts Institute of Technology)

  • Eugene A. Kapustin

    (University of California–Berkeley
    Lawrence Berkeley National Laboratory)

  • Lin Zhao

    (Massachusetts Institute of Technology)

  • Sungwoo Yang

    (Massachusetts Institute of Technology)

  • Omar M. Yaghi

    (University of California–Berkeley
    Lawrence Berkeley National Laboratory
    King Abdulaziz City for Science and Technology (KACST))

  • Evelyn N. Wang

    (Massachusetts Institute of Technology)

Abstract

Water scarcity is a particularly severe challenge in arid and desert climates. While a substantial amount of water is present in the form of vapour in the atmosphere, harvesting this water by state-of-the-art dewing technology can be extremely energy intensive and impractical, particularly when the relative humidity (RH) is low (i.e., below ~40% RH). In contrast, atmospheric water generators that utilise sorbents enable capture of vapour at low RH conditions and can be driven by the abundant source of solar-thermal energy with higher efficiency. Here, we demonstrate an air-cooled sorbent-based atmospheric water harvesting device using the metal−organic framework (MOF)-801 [Zr6O4(OH)4(fumarate)6] operating in an exceptionally arid climate (10–40% RH) and sub-zero dew points (Tempe, Arizona, USA) with a thermal efficiency (solar input to water conversion) of ~14%. We predict that this device delivered over 0.25 L of water per kg of MOF for a single daily cycle.

Suggested Citation

  • Hyunho Kim & Sameer R. Rao & Eugene A. Kapustin & Lin Zhao & Sungwoo Yang & Omar M. Yaghi & Evelyn N. Wang, 2018. "Adsorption-based atmospheric water harvesting device for arid climates," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03162-7
    DOI: 10.1038/s41467-018-03162-7
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