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 E-Mail IMAGE: UC Berkeley chemists synthesized flexible polymer membranes, like those currently used in membrane separation processes, but embedded with nanoparticles that can be tuned to absorb specific metal ions - gold. view more  Credit: Adam Uliana/UC Berkeley Improved Desalination Process Also Removes Toxic Metals to Produce Clean Water -Adapted from UC Berkeley news release by Bob Sanders Desalination - the removal of salt - is only one step in the process of producing drinkable water, or water for agriculture or industry, from ocean water or wastewater. Either before or after the removal of salt, the water often has to be treated to remove boron, which is toxic to plants, and heavy metals like arsenic and mercury, which are toxic to humans. Often, the process leaves behind a toxic brine that can be difficult to dispose of.

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