What is ion exchange technology?

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. A typical example of ion exchange is a process called “water softening” aiming to reduce calcium and magnesium content.

What are the three characteristics of ion exchange?

Basic Characteristics of Ion Exchange Resins

• Appearance.
• Particle Size.
• Reversible Swelling.
• Moisture.
• Density.
• Total capacity.

What is the role of ion exchanger?

Ion exchangers are either cation exchangers that exchange positively charged ions (cations) or anion exchangers that exchange negatively charged ions (anions). There are also amphoteric exchangers that can exchange both cations and anions simultaneously.

How do you write an ion exchange reaction?

In terms of a chemical equation, the process is 2K+ + Ca2+(soil) ⇌ Ca2+ + 2K+(soil), in which the double arrow indicates that the exchange is reversible.

How does ion exchange column work?

Ion exchange chromatography is used to separate charged molecules. In an anion exchange column, the packing is positively charged and therefore retains negatively charged molecules by coulombic interaction. The bound molecules are eluted with an anion gradient.

What is the advantage with ion exchange process?

Ion exchange is widely used for water treatment in both industrial and municipal water treatment systems. The process provides many advantages over other treatment methods. It is environment friendly, can provide high flow rate of treated water and has low maintenance cost.

How does an ion exchange column work?

What is an example of an ion exchange reaction?

Ion exchange reactions occur when ions in water exchange with those electrostatically bound to the solid phase. For example, in the coastal freshwater aquifer, Na+ in seawater displaces presorbed Ca2+ from solid phase (Figure 1).

What binds to an anion exchange column?

Anion-exchange chromatography is a process that separates substances based on their charges using an ion-exchange resin containing positively charged groups, such as diethyl-aminoethyl groups (DEAE). Anion exchange resins will bind to negatively charged molecules, displacing the counter-ion.

How do you elute protein from ion exchange?

Retained proteins are eluted from the column by applying a modified buffer. Elution is most commonly achieved by gradually increasing ionic strength of the buffer via salt gradient, and proteins are eluted in order of increasing their net charges.

How does the ion exchange process work?

In the exchange process, the ions of the solution to be treated are exchanged with accumulated ions with the same electrical charge on the resin. Basically, a differentiation is made between cation and anion exchangers.

What is Ion Exchange Foundation?

Ion Exchange Foundation, the CSR wing of Ion Exchange (India) Ltd was established with the vision to empower the economically disadvantaged towards social quality and to refresh our environment. Our focus is to support projects responding to ‘felt need’ and having long term impact relating to education, health and hygiene.

What are the limitations of ion exchange?

Limits of ion exchange. For ion exchange to be efficient there must be a difference in affinity between the ion in the resin and the ion or ions you want to remove from solution. The resin must have a higher affinity for the ion in solution compared to the ion in the resin.

What is an ion exchanger resin?

Ion exchangers can be ion exchange resins (functionalized porous or gel polymer), zeolites, montmorillonite, clay, or even soil humus. Ion exchangers are either cation exchangers that exchange positively charged ions (cations) or anion exchangers that exchange negatively charged ions (anions).