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Updated: May 17, 2026

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Welding Pollen-Based Solar Evaporator for Clean Water Production.

Wenjing Geng1, Hongjie Zhang2, Weiwei Lei3

  • 1School of Resources and Environment, Anhui Agricultural University, Hefei, Anhui, 230036, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|November 5, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed a cost-effective pollen-based solar evaporator (PSE) for desalination. This eco-friendly device efficiently produces clean water from saline sources, supporting sustainable agriculture and addressing global water scarcity.

Keywords:
desalinationphotothermal conversionplant cultivationsolar interfacial evaporationsunflower pollen

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Area of Science:

  • Materials Science
  • Environmental Science
  • Chemical Engineering

Background:

  • Global water scarcity is exacerbated by agricultural irrigation's high freshwater consumption.
  • Plant water transport mechanisms offer inspiration for novel water purification technologies.

Purpose of the Study:

  • To develop a cost-effective and sustainable solar evaporator for seawater desalination.
  • To utilize natural pollen as a primary material for efficient water purification.

Main Methods:

  • Fabrication of a pollen-based solar evaporator (PSE) using welding pollen.
  • Characterization of PSE's evaporation rate, cycling stability, and mechanical properties.
  • Testing the usability of collected freshwater for crop cultivation (lettuce, rice, wheat).

Main Results:

  • The PSE achieved an efficient evaporation rate of 1.86 kg m-2 h-1 under one-sun illumination.
  • Demonstrated excellent 10-cycle performance in 7.0 wt.% saline water without salt accumulation.
  • Showcased superior mechanical stability (3.44 MPa) and chemical resistance across a wide pH range.

Conclusions:

  • Pollen is a viable, low-cost, and eco-friendly material for interfacial solar evaporation.
  • The developed PSE technology offers a practical solution for freshwater generation.
  • This approach supports sustainable agriculture and addresses global water challenges.