Ion exchange
Ion Exchange
Ion exchange (/aɪ.ɒn ɪksˈtʃeɪndʒ/) is a chemical process that involves the exchange of ions between two electrolytes or between an electrolyte solution and a complex.
Etymology
The term "ion exchange" is derived from the process itself. "Ion" (/ˈaɪ.ɒn/) is a particle that has a non-zero net electrical charge. "Exchange" (/ɪksˈtʃeɪndʒ/) refers to the process of giving one thing and receiving another.
Process
In the ion exchange process, a fixed bed of resin is typically used, which is charged with exchangeable ions. As the solution passes through the resin, the ions in the solution are exchanged with the ions in the resin. This process is used in water purification, to remove unwanted ions from the water.
Related Terms
- Electrolyte: A substance that produces an electrically conducting solution when dissolved in a polar solvent.
- Resin: A solid or highly viscous substance of plant or synthetic origin.
- Water Purification: The process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water.
Applications
Ion exchange is widely used in different industries and in water treatment. In the pharmaceutical industry, it is used to separate certain ions from mixtures, in the food industry for the production of high fructose corn syrup, and in the nuclear industry for the treatment of radioactive wastes.
See Also
External links
- Medical encyclopedia article on Ion exchange
- Wikipedia's article - Ion exchange
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