单词	ion exchange
释义	ion exchange noun : a reversible interchange of one kind of ion present on an insoluble solid with another of like charge present in a solution surrounding the solid with the reaction being used especially for softening or demineralizing water, the purification of chemicals, or the separation of substances ion exchanger noun Example Sentences Recent Examples on the Web In 2019, the Lake County Public Works Department issued a letter to Lake Zurich asking the village to remove radium produced by its ion exchange process from the wastewater stream sent to Lake County, according to Village Manager Ray Keller. Elizabeth Owens-schiele, chicagotribune.com, 8 Mar. 2022 The whole-house units are generally sodium ion exchange systems that trade the calcium and magnesium ions in the water for sodium. Washington Post, 10 June 2021 The Glass Elite material undergoes an ion exchange tempering process that increases the surface tension for a durable and scratch-resistant protector. Ellen Mcalpine, CNN Underscored, 9 Nov. 2020 The technology the pilot plant will use to separate and concentrate rare earth elements is called ion exchange and continuous ion chromatography. Aldo Svaldi, The Denver Post, 12 Jan. 2020 Lilac, which announced the investment this week, says its ion exchange technology is twice as efficient as the current mining process and takes a fraction of the time. Max De Haldevang, Quartz, 21 Feb. 2020 Because the skin-irritating minerals are passed through the water via ion exchange, the water then becomes soft and can potentially be less irritating to the skin. Kaleigh Fasanella, Allure, 25 Sep. 2018 Inside are arrays of seven-foot tall stainless steel tubes, filled with sand grain-like particles that perform a process called ion exchange. Vince Beiser, WIRED, 27 Apr. 2018 This results in a process called ion exchange, in which sodium ions within the glass are forced out and replaced by potassium ions from the bathing solution. The Economist, 12 Oct. 2017 See More Word History First Known Use 1923, in the meaning defined above Medical Definition ion exchange noun ion ex·​change -iks-ˈchānj  : a reversible interchange of one kind of ion present on an insoluble solid with another of like charge present in a solution surrounding the solid with the reaction being used especially for softening or demineralizing water, purifying chemicals, or separating substances
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