Ion-exchange resins are high-molecular-weight insoluble compounds that can show a reaction when interacting with the ions of a solution. They have a three-dimensional gel or macroporous structure. They are also called ion exchangers.
Varieties
These resins are cation exchange (divided into strong acid and weak acid), anion exchange (strong base, weak base, intermediate and mixed base) and bipolar. Strongly acidic compounds are cation exchangers that can exchange cations regardless of pH values. But weakly acid ones can function at a value of at least seven. Strongly basic anion exchangers tend to exchange anions in solutions at any degree of dissociation, at any pH. This, in turn, is lacking in weakly basic anion exchangers. In this situation, the pH should be 1-6. In other words, resins can exchange ions in water, absorb some, and in return give away those that were previously stored. And since exactly H2O is a multicomponent structure, you need to correctly prepare it, choosechemical reaction.
Properties
Ion-exchange resins - polyelectrolytes. They don't dissolve. A multiply charged ion is immobile because it has a large molecular weight. It forms the basis of the ion exchanger, is associated with small mobile elements that have the opposite sign, and, in turn, can exchange them in solution.
Production
If a polymer that does not have the properties of an ion exchanger is treated chemically, then changes will occur - the regeneration of the ion exchange resin. This is quite an important process. With the help of polymer-analogous transformations, as well as polycondensation and polymerization, ion exchangers are obtained. There is s alt and mixed-s alt forms. The first implies sodium and chloride, and the second - sodium-hydrogen, hydroxyl-chloride species. Under such conditions, ion exchangers are produced. Moreover, in the process they are converted into a working form, namely hydrogen, hydroxyl, etc. Such materials are used in various fields of activity, for example, in medicine and pharmaceuticals, in the food industry, at nuclear power plants for condensate treatment. An ion exchange resin for a mixed bed filter can also be used.
Application
Ion-exchange resin is used to soften water. In addition, the compound can also des alt the liquid. In this regard, ion-exchange resins are often used in thermal power engineering. In hydrometallurgy they are used for non-ferrous and rare metals, in the chemical industry they are purified andseparate different elements. Ionites can also purify wastewater bodies, and for organic synthesis they are a whole catalyst. Therefore, ion exchange resins can be used in various industries.
Industrial cleaning
Scaling can occur on heat transfer surfaces, and if it reaches only 1 mm, then fuel consumption will increase by 10%. It's still a big loss. Moreover, the equipment wears out faster. To prevent this, you need to properly organize water treatment. For this, an ion exchange resin filter is used. It is by cleaning the liquid that you can get rid of scale. There are different ways, but as the temperature rises, their options become less.
Processing H2O
There are several ways to purify water. You can use magnetic and ultrasonic processing, or you can retouch it with complexones, complexonates, IOMS-1. But a more popular option is filtration using ion exchange. This will cause the composition of the water elements to change. When this method is used, the H2O is almost completely desalinated and the impurities disappear. It should be noted that such purification is quite difficult to achieve in other ways. Water treatment using ion exchange resins is very popular not only in Russia, but also in other countries. Such cleaning has many advantages and is much more effective than other methods. Those elements that are removed will never remain sediment at the bottom, and reagents do not need to be dosed constantly. Make thisThe procedure is very easy - the design of the filters is of the same type. If desired, you can use automation. After cleaning, the properties will be preserved under any temperature fluctuations.
Purolite A520E ion exchange resin. Description
To absorb nitrate ions in water, a macroporous resin was created. It is used to clear H2O in different environments. Purolite A520E ion-exchange resin appeared especially for this purpose. It helps to get rid of nitrates even with a large amount of sulfates. This means that compared to other ion exchangers, this resin is the most efficient and has the best performance.
Working capacity
Purolite A520E has high selectivity. This helps, regardless of the amount of sulfates, to remove nitrates efficiently. Other ion exchange resins cannot boast of such functions. This is due to the fact that with the content of sulfates in H2O, the exchange of elements decreases. But due to the selectivity of the Purolite A520E, this reduction does not really matter. Although the connection has a low, compared with others, complete exchange, the liquid in large quantities is cleaned quite well. At the same time, if there are few sulfates, then various anion exchangers, both gel and macroporous, will be able to cope with water treatment and the elimination of nitrates.
Preparatory operations
For Purolite A520E Resin to perform at 100%, it must be properly prepared to performcleaning and preparation functions H2O for the food industry. It should be noted that before starting work, the used compound is treated with a 6% NaCl solution. In this case, twice the volume is used compared to the amount of the resin itself. After that, the connection is washed with food water (the amount of H2O should be 4 times more). Only after such processing can it be taken for cleaning.
Conclusion
Due to the properties that ion exchange resins have, they can be used in the food industry not only for water purification, but also for processing food, various drinks and other things. Anion exchangers look like small balls. It is to them that calcium and magnesium ions stick, and they, in turn, give sodium ions into the water. During the washing process, the granules release these adhering elements. Be aware that pressure may drop in the ion exchange resin. This will affect its beneficial properties. Certain changes are influenced by external factors: temperature, column height and particle size, and their velocity. Therefore, during processing, an optimal state of the environment should be maintained. Anion exchangers are often used in water purification for an aquarium - they contribute to the formation of good conditions for the life of fish and plants. So, ion-exchange resins are needed in various industries, even at home, as they can purify water for its further use.
