Ion exchange definition

Ion exchange means the process of using ion exchange materials such as resin or zeolites to remove undesirable ions from water and substituting acceptable ions, for example, ion exchange for nitrate removal or ion exchange for softening.
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Ion exchange means the process pertaining to demineralization of water by ion exchange units that use acids, bases, or salts to regenerate the exchange resins. The hydrogen-ion exchangers have cation-exchange resins that can be regenerated with sulfuric or hydrochloric acid. The hydroxide-ion exchangers have anion resins that can be regenerated with sodium hydroxide (NaOH), sodium carbonate (Na2CO3), or ammonia (NH3). In the case of a sodium cycle ion exchange unit, the zeolite media softener is regenerated with high concentration of sodium chloride (brine). In case of hydrogen-ion and hydroxyl-ion exchangers, the regeneration wastes are neutralized, pH adjusted, and discharged. For sodium cycle ion-exchange units, the regeneration wastewater and the first flush of rinse water contains TDS and chloride concentration of concern.
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Ion exchange means a process whereby ions in solution are interchanged by a reactive material (see ion exchanger).
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Examples of Ion exchange in a sentence

  • Ion exchange resins and solvents, in decreasing order, will likely yield lower quantities per unit mass of starting organic.

  • Ion exchange is carried out in a pressurized vessel that contains a bed of ion exchange resin composed of small, spherically-shaped beads.

  • The evaluation will consider the following Chromium-6 potential treatment processes: • Reduction coagulation filtration (RCF) • Strong base Ion exchange (SBA IX) The evaluation of each treatment alternative will include the following presented in graphical or tabular format for a single target MCL: • Simplified process flow schematic.

  • These systems include the following: • Groundwater EWs, well pumps, and pipeline system • EQ pump and tank • Pretreatment and filter system • Air stripper and vapor-phase carbon system • Ion exchange and resin dewatering system • Backwash supply and treated water discharge system • Compressed air system • Instrument and control systems • Sump and building systems Groundwater from the EWs is transferred through a pipeline to the EQ tank at the NWPGS.

  • Ion exchange work had often been used to assess the relative abundance of pertechnetate and non-pertechnetate.

  • Ion exchange chromatography showed increased serum chloride in these nonclinical studies to be pseudo-hyperchloremia, representing increased bromide.

  • Ion exchange is costly, slow, and cumbersome to use, and in order to be effective, the waste water being treated must be passed through a significant amount of ion-exchange resin, usually in the form of a filter bed, making it effective, in most cases, for only treating small volumes of waste water.

  • CPP: Ion exchange resin is used in polishers situated at each unit to remove impurities from the steam-water cycle.

  • Ion exchange resin is extremely vulnerable to chlorine attack and therefore options available included: With a fixed bed Ion exchange process there were concerns that periodic high concentrations of fine chalk particles in the raw water would lead to fouling of the resin.