The adsorption properties of Ukrainian Transcarpathian clinoptilolite in aqueous copper(H) solutions under dynamic conditions have been investigated. Under optimum conditions (p^H of Cu²+ solution = 7.1; adsorbent thermally modified at 120-170°C for 2.5 h; flow rate of Cu2+ solution through adsorbent = 3 ml/min), the adsorption capacity of the clinoptilolite towards copper amounted to 725 ng/g. The conditions for the desorption of copper(II) from clinoptilolite have been studied. Of the desorbents tested, the best were HNO₃ (1:1) and HNO₃ (1:2) solutions. Their effectiveness in extracting copper(II) ions under the desorption conditions employed amounted to 100%.

Encompassing all fields of chemical research, BMC Chemistry is an open access, peer reviewed journal that publishes articles on fundamental concepts, new developments and the application of chemical principles to a broad range of research fields, industry, and other disciplines. The journal provides an inclusive platform for the dissemination and discussion of chemistry to aid the advancement of all areas of research. Supported by a highly experienced global Editorial Board, this journal is part of the BMC series, a collection of journals that are focused on individual research communities, publishing all scientifically valid studies based on community-aligned standards of questioning, methods and analysis.

The adsorption properties of Ukrainian Transcarpathian mordenite in aqueous copper(II) solutions under dynamic conditions have been investigated. Under optimum conditions (pH of Cu²⁺ solution = 6.5; adsorbent thermallly modified over 2.5 h at 150°C; rate of passage of Cu²⁺ solution through adsorbent = 3 ml/min) the adsorption capacity of the mordenite towards copper amounted to 1020 μg/g. Copper is effectively desorbed by an aqueous solution of HNO₃ (1:2). Under optimum desorption conditions the effective extraction of copper was 99.8%.