Authors: O.I. Volkova, Yu.A. Vinidiktova, N.A. Zolotukhina, V.M. Zolotukhin

Title of the article: Investigation of regeneration of KU-2-8 cationite in sodium form by different concentrations of sodium chloride

Year: 2023, Issue: 6, Pages: 31-38

Branch of knowledge: 2.6.7. Technology of inorganic substances

Index UDK: 66.974.434

DOI: 10.26730/1999-4125-2023-6-31-38

Abstract: Water is used in every industrial process, the quality of water treatment plays an important role in production, therefore it meets high requirements. Desalination of water in industry can be achieved by different methods. The most common deep purification schemes include ion exchange carried out on ionite filters. The acids, salts, and bases dissolved in water, distributed in the form of individual ions, are almost completely removed using ion exchange technology. The essence of water treatment by ion exchange methods is based on the passage of pretreated water through the filter layer of the ion exchange material. Ionites are high-molecular substances insoluble in water, which, due to the presence of special functional groups in them, are capable of ion exchange reactions. In this paper, the regeneration of KU-2-8 strong acid cationite in sodium form with sodium chloride solutions is studied. Cationite is widely used in the softening of industrial water at enterprises. The influence of the concentration of the regenerating solution was studied in order to select the optimal regenerate capable of removing hardness ions from the functional groups of the cationite. The results showed that for the complete regeneration of KU-2-8 in the sodium form, it is necessary to pass through an 8 % solution of sodium chloride.

Key words: strong acid cationite regeneration concentration ionite

Receiving date: 19.02.2023

Approval date: 20.11.2023

Publication date: 21.12.2023

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