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2 Journal of Ecological Engineering

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Mathematical Prediction of Sorption Processes of Heavy Metals on Cation Exchangers Using the Thomas Model

100%

Koliehova A. , Trokhymenko H. , Gomelya M.

tom Vol. 22, nr 9

232--236

On a production scale, it is advisable to use mathematical models for predicting the treatment of effluents from heavy metal ions, which will increase the efficiency of enterprises. The sorption processes of copper, zinc, nickel and cadmium ions on the KU-2-8 cation exchange resin in the acid form at different concentrations were studied in this scientific work. At the same time, the sorption curves calculated were constructed using the Thomas model. The study results showed that this model very clearly describes the sorption processes of metals on the resin. Thus, it can be used to predict the processes of wastewater treatment in production.

Study of the Process of Electro Evolution of Copper Ions from Waste Regeneration Solutions

88%

Trokhymenko G. , Magas N. , Gomelya N. , Trus I. , Koliehova A.

tom Vol. 21, nr 2

29--38

The article presents the results of the study on the process of copper electroevolution from the regeneration solutions in one- and two-chamber electrolyzers at different concentrations of sulfuric acid and the solutions of copper chlorides at different concentrations of hydrochloric acid – in a three-chamber electrolyzer. The conditions of electrochemical recovery of heavy metals from acidic and saline solutions were determined. It was shown that the most effective recovery of heavy metal cations from hydrochloric acid solutions occurs in three-chamber electrolyzers. On the basis of the results obtained, a technological scheme of a local plant for treatment of washing water of galvanic industries was proposed.