As part of a wave of solar water purifier research, scientists say they can turn even brackish groundwater into drinkable fresh water in about 30 minutes. The filtration uses a metal-organic framework, or MOF, which is a highly porous polymer made by combining metal particles with “coordinating” organic pieces called ligands. It can (and must!) be used in the sun, making it ideal for many applications in situ near sources of brackish water.
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