Why should new resins be pre-treated before use?
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Why should new resins be pre-treated before use?
Ion exchange resins often contain small amounts of low relative molecular mass polymers and monomers that did not participate in polymerization. Therefore, when the new ion exchange resin comes into contact with water and solutions such as acids and bases, these low-molecular-weight polymers and monomers dissolve into the solution, affecting the quality of water treatment.
Ion exchange resins often contain small amounts of low relative molecular mass polymers and monomers that did not participate in polymerization. Therefore, when the new ion exchange resin comes into contact with water and solutions such as acids and bases, these low-molecular-weight polymers and monomers dissolve into the solution, affecting the quality of water treatment. Furthermore, due to reasons such as packaging and transportation, ion exchange resins may also contain small amounts of inorganic impurities (such as iron), so in desalination processes where high water quality is required, new ion exchange resins usually need to undergo necessary treatment before use. At the same time, practice has shown that treating new ion exchange resins can also improve their \"activability\" and chemical stability.
This post was last edited by CoCo070563 on 2015-9-15 17:20. The new resin contains organic impurities such as small amounts of oligomers and monomers that did not participate in the polymerization reaction, as well as other inorganic impurities like iron, aluminum, and copper. When the resin comes into contact with water, acids, bases, or other solutions, the aforementioned soluble impurities dissolve into the solution and affect water quality; therefore, new resin must be pre-treated before use. Pre-treatment of the resin to convert it into the desired ionic form serves to activate the resin.