METHOD FOR PRODUCING FRESH WATER FROM AQUEOUS SALT SOLUTIONS
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United States of America Patent
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Oct 24, 2024
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Aug 23, 2022
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Aug 23, 2022
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Abstract
A method and an apparatus for producing fresh water from aqueous salt solutions in the form of water vapor condensate released by cooling an air stream maximally saturated with water vapor and circulating between a condenser refrigerator and a device for heating, by solar rays, and contacting streams of the salt solution being dehydrated and of atmospheric air being saturated by the water vapor are provided. The initial lithium-bearing natural brine is used as a coolant prior to the use thereof as a raw lithium-bearing source for selective extraction of lithium on granulated LiCl·2Al(OH)3·mH2O sorbent. The method and apparatus allow the production of fresh water both from highly mineralized aqueous salt solutions and from low-mineralized solutions, for example, the fresh water extracted from natural primary lithium concentrate, without the costs associated with technogenic thermal energy provided by heating steam or electricity.
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