What is meant by ion-exchange resins?
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Definition of ion exchange resin : an insoluble material of high molecular weight that contains groups which can be exchanged with ions in a solution with which it is in contact.
What are the properties of ion exchange resin?
Properties of ion exchange resins
- Swelling. Ion exchange resins are hygroscopic.
- Capacity. Capacity is a number of chemical equivalents of ions that can be taken up by a unit amount of the resin (dry weight/wet weight/wet volume).
- Particle size.
- Stability.
What are ion-exchange resins made of?
Ion-exchange resins are generally made from methacrylic acid, sulfonated styrene, and divinylbenzene (DVB).
What is ion exchange used for?
Ion exchange is a water treatment process commonly used for water softening or demineralization, but it also is used to remove other substances from the water in processes such as dealkalization, deionization, denitrification, and disinfection.
What is ion exchange reaction?
ion-exchange reaction, any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions) that involves an exchange of one or more ionic components.
What is ion exchange technique?
Ion exchange is a water treatment method where one or more undesirable ionic contaminants are removed from water by exchange with another non-objectionable, or less objectionable ionic substance.
How do resins work?
Resin is technically short for epoxy resin which is a two-component system consisting of resin and hardener. By mixing the two components, a chemical reaction takes place so that the liquid resin gradually hardens to a solid plastic.
How do you make ion exchange resin?
To make a cation-exchange resin with a stronger acidity, water-insoluble styrene is used to prepare the polymer, which is sulfonated to make it hydrophilic. DVB is also used to cross-link the polymer, and the counterion of the sulfate group (SO3) is generally sodium. Ion-exchange resins swell in an aqueous medium.
What are ion exchangers give example?
Ion exchangers are natural substances—for example, certain clays—or deliberately synthesized resins containing positive ions (cation exchangers) or negative ions (anion exchangers) that exchange with those ions in solution having a greater affinity for the exchanger.
What is ion exchange resin and how does it work?
What is Ion Exchange Resin and How Does it Work? Ion Exchange Resin is comprised of a bed of cation and anion resins which are negatively and positively charged respectively to purify water by removing ions or salts. To accomplish this, an exchange occurs by trapping ions in the resin beads and releasing other ions.
What does ion exchange resin mean?
What are ion exchange resins? Ion exchange is a reversible chemical reaction where dissolved ions are removed from solution and replaced with other ions of the same or similar electrical charge. Not a chemical reactant in and of itself, IX resin is instead a physical medium that facilitates ion exchange reactions. The resin itself is composed of organic polymers that form a network of hydrocarbons.
What is the difference between cation and anion exchange resins?
– Strong acid cation resins – Weak acid cation resins – Strong base anion resins – Weak base anion resins – Specialty resins
What to know about ion exchange resin regeneration?
Backwash. Backwashing is performed in CFR only,and involves rinsing the resin to remove suspended solids and redistribute compacted resin beads.