Cation exchange

Pronunciation: /ˈkæˌtaɪən ɪksˈtʃeɪndʒ/

Cation exchange (noun)

  1. A process where positively charged ions in water swap places with ions on a solid material, often used in soil and water treatment.
  2. A purification method using an ion-exchange resin that captures positive ions and releases other positive ions into the liquid.

Examples

  • Cation exchange helps soil hold nutrients for plants.
  • The soil uses cation exchange to swap ions with water.