What is the principle of removal of hardness of water by ion exchange process?

Answer: The ion exchange resins are used to carry softening of water. To carry out the water, softening calcium or magnesium are to be removed. This process is done by using resin so as the hard water passed through the resin, it takes calcium and magnesium by releasing sodium ions in the solution.

What is the principle of ion exchange resin?

Ion Exchange resins are insoluble granular substances which have in their molecular structure acidic or basic radicals that can be exchanged. The positive or negative ions fixed on these radicals are replaced by ions of the same sign in solution in the liquid in contact with them.

What principle is involved in softening of water?

The principle of the method is to exchange the ions (cation and anion both) that form the salts responsible for hardness in water. ions and also other cations. It results in proton release which makes water acidic.

What is the principle of ion exchange method for water treatment?

At a glance

Working principle	Undesirable ionic contaminants are removed from water by exchange with another non-objectionable, or less objectionable ionic substance.
Main strength	Efficient to remove dissolved inorganics.
Main weakness	Do not remove particles or bacteria.

What is the name of method used for softening of hard water by inorganic cation exchanging process?

Ion exchange is a method widely used in household filters to produce soft water for the benefit of laundry detergents, soaps, and water heaters. This is accomplished by exchanging divalent cations (such as calcium Ca2+ and magnesium Mg2+) with highly soluble monovalent cations (e.g., Na+ or H+) (see water softening).

In which one of the softening method is used to remove both cations and anions present in hard water?

2) Organic Ion exchangers: Certain synthetic organic exchangers also called ion exchange resins are even superior to zeolites since they can remove all types of cations and anions present in hard water. The resulting water is called demineralised water or deionized water and is as good as distilled water.

What is the resin used in water softener?

The resin in most modern softeners (polystyrene divinylbenzene) consists of millions of tiny plastic beads, all of which are negatively charged exchange sites. The ions considered in this process (calcium, magnesium and sodium) are all positively charged ions.

Is ion exchange resin water soluble?

Ion-exchange resins are solid particulate materials substantially insoluble in water and common solvents, which contain active (ionic) group of a basic or acidic nature with mobile ions.

What is hard and soft water?

Hard water… is water that contains an appreciable quantity of dissolved minerals (like calcium and magnesium). Soft water… is treated water in which the only ion is sodium. On the other hand, soft water tastes salty and is sometimes not suitable for drinking.

What is softening by ion exchange?

Softening is the process of ion exchange. The ions in hard minerals (calcium and magnesium) are exchanged with ions of “soft” minerals such as sodium, which do not produce the hard scale that can damage foodservice equipment.

What is soft and hard water?

Understanding Water The hardness or softness of water is determined by the mineral content of both calcium and magnesium: Soft water has less than 17 parts per million. Slightly hard water has 17 to 60 parts per million. Moderately hard water has 60 to 120 parts per million.