Chemical Safety Science, 2018, Volume 2, No 2, p. 173 — 182


Technologies for the elimination of chemical hazards


UDC 661.182.547.721                                                          Download PDF (RUS)

DOI: 10.25514/CHS.2018.2.14115



Tashkent State Technical University named after Islam Karimov, Tashkent, Republic of Uzbekistan

S. M. Turabdzhanov, T. V. Ponamaryova, D. A. Yusupova, Z. Sh. Nazirov, and L. S. Rakhimova*

Received Oktober 11, 2018

Published December 26, 2018

Abstract – One of the most effective methods for purifying industrial wastewater and water bodies contaminated with heavy metal ions is an extraction procedure by means of ion-exchange sorbents, which provides selective removal of metal ions followed by their utilization and return of purified effluents into circulating water supply system. A procedure has been developed for synthesis of a novel polycondensation type phosphorylated cation-exchange polymer with relevant selectivity towards copper(II) ions. The cation-exchange polymer is functionalized with phosphoryl groups and can be obtained by polycondensation reaction of diphenyloxide and furfural, followed by product phosphorylation. Mechanism of the phosphorylation process has been established and quantum chemical calculations for formation of a complex of cation-exchanger with copper atoms have been carried out. The sorbent regeneration capacity, consumption of wash water, along with sorption characteristics for copper(II) ions were determined in laboratory under dynamic conditions. The synthesized cation-exchange resin is characterized by high selectivity for copper(II) ions thus enabling their removal from contaminated solutions up to the values of maximum permissible concentration.

Keywords: complexation, selectivity, distinguishability, cation-exchanger, regeneration, ecotoxicant, waste water, copper(II) ions.


1. Shachneva E.Yu. Impact of heavy toxic metals on the environment. Scientific potential of regions on modernization service. Astrakhan’: AISI, 2012. No. 2 (3). 170 р. [in Russian].
2. Pimneva L.A. // Modern problems of science and education. 2015. No. 2 (part 2). (accessed 11.10.2018) [in Russian].
3. Turobdjonov S.M., Rakhimova L.S. // Austrian Journal of Technical and Natural Sciences. 2016. No. 1–2. P. 111.
4. Turabdzhanov S.M., Rakhimov L.S., Yusupova D.A. Studying the sorption of copper ions by the quantum-chemical method. XXI All-Russian Conference of Young Scientists-Chemists (with international participation). Nizhny Novgorod: Izd. Nizhegorod. Univ., 2018. Р. 353 [in Russian].
5. Alovitdinov A.B. Synthesis, studying properties and use of organophosphorus ion exchangers. Tashkent: Fan, 1982. 80 р. [in Russian].
6. Shchurevich O.A., Lyubliner I.P. // Vesci AN Belarusi. Ser. Khim. 1996. No. 2. P. 96 [in Belarusian].
7. Quantitative chemical analysis of water. Methods for measuring mass concentration of copper ions in natural and treated wastewater by photometric method with lead diethyldithiocarbamate in carbon tetrachloride. PND F 14.1: 2.48-96. M., 1996. 14 p. [in Russian].