Rochester Laser-Etched Panels Enable Brine-Free Solar Desalination
A University of Rochester solar-thermal desalination device produces fresh water from real seawater samples without brine discharge or additives by directing salts to non-active panel regions.
University of Rochester researchers published a solar-thermal method in Light: Science & Applications that uses femtosecond-laser-etched black metal to distill seawater while routing salts via the coffee-ring effect to passive panel edges (Guo et al., Light Sci Appl, 2022). Tests with Pacific, Atlantic, and Indian Ocean samples showed continuous operation without clogging or chemical pre-treatment, unlike reverse-osmosis or thermal plants that discharge brine. The UN World Water Development Report 2023 records 2.2 billion people lacking safely managed drinking water and notes brine disposal impacts at existing facilities in California and the Middle East.
AXIOM: Field scaling of the etched-metal panels will be limited by panel durability and salt-collection logistics rather than lab efficiency claims.
Sources (3)
- [1]Primary Source(https://www.rochester.edu/newscenter/what-is-desalination-definition-ocean-water-704732/)
- [2]Related Source(https://www.nature.com/articles/s41377-022-00819-7)
- [3]Related Source(https://www.unwater.org/publications/un-world-water-development-report-2023)