Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. physicochemical processes

Anotations

Scope note:

Reciprocal and reversible transfer of ions of the same charge between a solution and a relatively insoluble solid in contact with it. Cation exchange and anion exchange are, respectively, the exhange of positively and negatively charged ions. Ion exchange is used in such applications as kidney dialysis, water purification, and chemical analysis.