INVESTIGATION OF THE STRUCTURE OF CATIONITE BASED ON SAWDUST AND CHI-TOSAN
Abstract
The article presents the results of a study of the structure of cationite from modified sawdust and chitosan. The molar ratio of sawdust and chitosan is 1: 0.4. The specific surface area was measured by low–temperature nitrogen adsorption (desorption) at the Sorbi-MS sorption plant (Russia). Images of the sorbent surface were obtained using the analytical scanning electron microscope Tescan VEGA 3 SBH (Czech Republic). The chemical structure of the sorbent and the identification of functional groups involved in ion exchange were studied using the Avatar 360 FT–IR ESP infrared Fourier spectrometer (Japan). The sorbent has a macroporous structure and contains carboxyl, phenolic hydroxyl groups and amino groups capable of ion exchange with heavy metal ions from solutions. Recommendations on the use of sorbent in water supply systems are given.
References
1. Denisova T.R., Shaikhiev I.G. The use of components of deciduous trees in the middle zone of Russia as sorption materials for the removal of pollutants from aqueous media. Literature review. Bulletin of technol. un–ta. 2017. Vol. 20, No. 24. pp. 145-158.
2. Chitin and chitosan: Preparation, properties and application Edited by K.G. Scriabin. M.: Nauka, 2002. 368 p.
3. Natareev S.V., Bykov A.A., Zakharov D.E. Design development of the apparatus with a fixed ionite layer. Modern high technologies. Regional application. Ivanovo. 2018. N 2 (54). P. 84-91.
4. Polyansky N.G., Gorbunov G.V., Polyanskaya N.L. Methods of ionite research. M.: Chemistry, 1976. 208 p.
5. Selemenev, V.F. Slavinskaya G.V., Khokhlov V.Yu. et al. Ion Exchange Workshop: A textbook. Voronezh: Publishing House of Voronezh State University, 2004. 160 p.
6. Natareev S.V., Zakharov D.E., Shilov N.M. Purification of water from heavy metal ions in a flow-through capacitive apparatus. Modern high technologies. Regional application. Ivanovo. 2021. N 3 (67). P. 70-76.
7. Natareev S.V., Zakharov D.E., Lapshin N.A. Ion exchange water purification from heavy metal ions in periodic and continuous devices. Modern high technologies. Regional application. Ivanovo. 2019. N 2 (584). P. 150-159.
