Cited by 81Solar-Powered Water Purification MethodsAdsorption and Cooling SystemsSolar Energy Systems and Technologies

Marangoni Effect Drives Salt Crystallization Away from the Distillation Zone for Large-Scale Continuous Solar Passive Desalination

Shao, Yang, Shen, Anqi, Li, Ningbo, Yang, Liping, Tang, Jiebin, Zhi, Hui, Wang, Dejuan, Xue, Guobin·2022·ACS Applied Materials & Interfaces

Abstract

Solar desalination shows great potential in dealing with global water scarcity. A multistage passive solar distiller with thermal localization is especially attractive for its high-water yield. However, achieving long-term stability in large-scale devices remains a challenge because of the easy accumulation of crystallized salt inside the distiller. Here, we reported that the Marangoni effect can drive crystallized salt away along a long distance in a capillary wick, which endow the multistage passive solar distiller with the ability of salt-rejecting. In a 36 h continuous testing, the salinity of the distillation zone is limited below 12 wt % and crystallized salt only accumulates outside the device. The water yield is about 1.7 kg m –2 h –1 in a three-stage device, with a solar-to-vapor conversion efficiency of 114% under one sun. This novel design proves a new principle for high efficiency and long-term stable solar desalination.

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Crossref · 10.1021/acsami.2c04572

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Authors
Shao, Y., Shen, A., Li, N., Yang, L., Tang, J., Zhi, H., Wang, D., & Xue, G.
Affiliations
University of Jinan (CN)
Corresponding author
Xue, Guobin
Venue
ACS Applied Materials & Interfaces
Published
2022-06-22
Volume
14
Issue
26
Pages
30324-30331
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
OpenAlex
W4283271192
Cited by
81
References
45
Citations by year
2026: 28 · 2025: 20 · 2024: 20 · 2023: 11 · 2022: 2
FWCI
2.39
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Applied Materials & Interfaces (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Shandong Province (tsqn201812085)
  • National Natural Science Foundation of China (51902133, 51903102)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Solar-Powered Water Purification Methods
  • Physical Sciences › Engineering › Mechanical Engineering › Adsorption and Cooling Systems
  • Physical Sciences › Engineering › Mechanical Engineering › Solar Energy Systems and Technologies
Keywords
Marangoni convection, salt crystallization, solar desalination, thermal localization, capillary wick, salt rejection, water yield, solar-to-vapor conversion efficiency, long-term stability

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