Engineering and Technology

Scalable and high throughput photothermal water disinfection with negligible CO₂ footprint utilizing nanostructured carbon coatings

A. Sah, A. K. Mandal, et al.

Discover the groundbreaking research by Ananya Sah and colleagues on nanostructured porous hard-carbon florets as a revolutionary solar absorber coating for photothermal water disinfection. This innovative approach achieves high water temperatures for effective disinfection while maintaining a low CO₂ footprint, offering a sustainable solution for clean water access.

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Abstract

This paper demonstrates the use of nanostructured porous hard-carbon florets (NCF) as a solar absorber coating for photothermal water disinfection. NCF coating on helical solar receivers achieves high surface temperatures, heating water to 82 °C and disinfecting it through thermal shock. A prototype, SWAP, delivers bacteria-free hot water at 42 L m⁻² day⁻¹ with a low CO₂ footprint (5 kg L⁻¹), significantly lower than existing methods.

Publisher

npj Clean Water

Published On

Nov 03, 2023

Authors

Ananya Sah, Atindra Kanti Mandal, Shubham Tiwari, Soumyo Mukherji, Chandramouli Subramaniam

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