Definition of ion exchange in English:

ion exchange

Pronunciation /ˈīən/ /ˈaɪən/ /ˈīˌän iksˈCHānj/ /ˈaɪˌɑn ɪksˈtʃeɪndʒ/ /eksˈCHānj/ /ɛksˈtʃeɪndʒ/


  • The exchange of ions of the same charge between an insoluble solid and a solution in contact with it, used in water-softening and other purification and separation processes.

    ‘Solutions passed through a filter bed of zeolite minerals undergo ion exchange as particular ions or molecules become trapped within the crystal lattice.’
    • ‘A process called ion exchange exists whereby ions in solution are exchanged for ions that are bound on the surface of a resin.’
    • ‘Tertiary treatment is a combination of treatments or advanced methods such as distillation, ion exchange, reverse osmosis, and the like.’
    • ‘Nitrate can be removed from drinking water by three methods: distillation, reverse osmosis and ion exchange.’
    • ‘Blood vessel dilation is due to blockage of calcium channels in smooth muscle cells or inhibition of sodium-calcium ion exchange.’