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Elastic Textile Threads for Fog Harvesting.

Luc The Nguyen1, Zhiqing Bai1, Jingjing Zhu1

  • 1Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, 2999 North Remin Road, Shanghai 201620, China.

Langmuir : the ACS Journal of Surfaces and Colloids
|July 18, 2022
PubMed
Summary

Novel elastic textile threads (ETTs) were modified and integrated with an automatic stretching system to significantly improve fog harvesting efficiency and water collection rates, demonstrating their potential for water resource applications.

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Area of Science:

  • Materials Science
  • Textile Engineering
  • Water Harvesting Technologies

Background:

  • Textile materials have shown promise for fog harvesting.
  • Existing methods require enhancement for improved droplet capture, growth, and efficient water collection.

Purpose of the Study:

  • To design and fabricate novel elastic textile threads (ETTs) for enhanced fog harvesting.
  • To investigate the impact of surface modification and dynamic stretching on fog collection efficiency.

Main Methods:

  • Modified ETTs (m@ETTs) were created using sol-gel, solvent treatment, and spray coating techniques with silica and titanium particles.
  • An automatic stretching-recovery system was employed to create auto-ETTs, with further modifications yielding auto-i@ETTs.
  • Fog harvesting efficiency and water collection rates were measured and compared against unmodified ETTs.

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Main Results:

  • m@ETTs exhibited 60-120% greater fog harvesting efficiency compared to standard ETTs.
  • auto-i@ETTs achieved a water harvesting rate 2.5 times higher than ETTs, reaching up to 3.35 g/h/cm².
  • Elastic elongation was found to be proportional to water harvesting efficiency; thread elasticity influenced droplet behavior and pouring.

Conclusions:

  • Modified elastic textile threads with dynamic stretching capabilities significantly enhance fog water harvesting.
  • The study reveals novel principles of droplet behavior and thread elasticity crucial for efficient water collection.
  • This approach highlights the substantial potential of elastic threads in developing advanced fog harvesting systems.