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Vol. 28 (2025 year), No. 4, DOI: 10.21443/1560-9278-2025-28-4/2

Pupysheva N. S., Nikiforova T. E., Kozlov V. A.
Sorption of Cu(II) ions from aqueous solutions by chitosan modified with taurine

Modern technologies in almost all industries use one of the most important strategic resources – water. It is used either in pure form or in the form of solutions, suspensions, etc. Recently, there has been a shortage of this resource, since wastewater pollution from industrial waste with various components, including heavy metals, is increasing. It is known that one of the effective methods for cleaning aqueous solutions from heavy metals is their sorption with chitosan, which is obtained by processing a by-product of the fishing industry – chitin. Processing chitin and obtaining chitosan solve the problem of waste disposal. Studies show that the effectiveness of chitosan in terms of increasing its ability to absorb heavy metals can be significantly enhanced by modifying it. The purpose of this work is to search for chitosan modifiers to increase the efficiency of heavy metal sorption from aqueous solutions. Taurine powder has been used as a modifier. As a result of the experiments, it has been established that the optimal ratio of chitosan : taurine is 2 : 1. The paper describes the method for obtaining chitosan gel and spherical sorbent granules, and presents experimental isotherms of Cu(II) ion sorption by granules of the original and taurine-modified chitosan. The presented research results show that the use of taurine as a chitosan modifier leads to an increase in copper ion sorption by 2.5 times.

(in Russian, стр.5, fig. 3, tables. 1, ref 16, AdobePDF, AdobePDF 0 Kb)