TIFR desalinates seawater without using electricity

TIFR researchers have produced gold nanoparticles that can absorb sunlight over the entire visible region and even the near infrared light. They used such gold nanoparticles to absorb energy from sunlight to be able to desalinate seawater to produce drinking water. The gold nanoparticles can also be used for converting carbon dioxide to methane more … Continue reading TIFR desalinates seawater without using electricity

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IIT Guwahati achieves greater desalination efficiency using crystalline carbon dots

IIT Guwahati researchers have increased the efficiency of desalination to nearly 84% by using crystalline carbon dots and exposing them to simulated solar conditions. The carbon dots doped with nitrogen, sulphur and phosphorus showed crystallinity. The crystalline carbon dots retained up to 78% of the original desalination efficiency even at the end of the ninth cycle. Researchers at … Continue reading IIT Guwahati achieves greater desalination efficiency using crystalline carbon dots

IIT Bombay’s superior water filter needs very little power

Electrodes made of copper plates wound with cellulose thread coated with carbon nanotubes for capacitive deionisation and placed close to each other achieved 84% efficiency in ion removal. With power requirement of just 0.15 mW, the water filter  made by IIT Bombay researchers can be operated with a pen-torch battery. Unlike the conventionally used reverse osmosis … Continue reading IIT Bombay’s superior water filter needs very little power

Indian researchers use graphene sieves to turn seawater into drinking water

Producing potable water through desalination may become more efficient and less energy intensive if researchers at the University of Manchester are able to successfully use graphene oxide (GO) membranes to filter common salts present in seawater on a commercial scale. When the spacing between two successive graphene oxide sheets was nearly 10 Å (1 angstrom … Continue reading Indian researchers use graphene sieves to turn seawater into drinking water