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New Catalyst Moves Seawater Desalination, Hydrogen Production Closer to Commercialization
Fast, One-Step Assembly at Room Temperature Yields High Efficiency at Low Cost
January 28, 2021
A team of researchers led by Zhifeng Ren, director of the Texas Center for Superconductivity at UH, has reported an oxygen evolving catalyst that takes just minutes to grow at room temperature and is capable of efficiently producing both clean drinking water and hydrogen from seawater.
Seawater makes up about 96% of all water on earth, making it a tempting resource to meet the world’s growing need for clean drinking water and carbon-free energy. And scientists already have the technical ability to both desalinate seawater and split it to produce hydrogen, which is in demand as a source of clean energy.
A heat wave in 2012 continues to have a measurable effect on Greenland’s ice sheets, causing meltwater that would otherwise be soaked up by a porous layer of ice to instead flow freely out to sea.
A boat steers slowly through floating ice, and around icebergs, all shed from the Greenland ice sheet, outside Ilulissat, Greenland, in 2011. (AP Photo/Brennan Linsley, File)
(CN) Greenland’s massive ice sheets have been melting at an alarming rate for more than a decade. Scientists have now detected structural changes causing the ice itself to store meltwater less efficiently, further contributing to sea-level rise.
KAUST team devises electrically-driven membrane process for seawater lithium mining
Researchers at King Abdullah University of Science and Technology (KAUST) in Saudi Arabia have developed a continuous electrically-driven membrane process which successfully enriches lithium from seawater samples of the Red Sea by 43,000 times (i.e., from 0.21 to 9013.43 ppm) with a nominal Li/Mg selectivity >45 million.
They precipitated lithium phosphate with a purity of 99.94% directly from the enriched solution, thereby meeting the purity requirements for application in the lithium battery industry. Preliminary economic analysis shows that the process can be made profitable when coupled with the Chlor-alkali industry.
An open-access paper on their work is published in the RSC journal
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