Isotherms of sorption of 2- GeO₃ and 2- Zn(OH)₄ on a synthetic sorbent are received. The thermodynamic description of sorptionisotherms analogue of the Lengmjur equation is offered. Values limiting and seeming constants of sorption equilibrium, apparent constants and Gibbs energy of reaction. Selectivity of sorption on anionite in relation to germanium is shown.

A brief review of the current condition in the market of germanium and the areas of its application is given. Examples of technologies used in processing germanium-containing raw materials are given. A hydrometallurgical technique of slag processing with extraction of germanium and zinc is offered.

Optimal conditions of the leaching process have been found. Dependences of the process rate on the main technological parameters - temperature, concentration of reagents, L: H phase ratio - have been determined. Kinetic characteristics of the leaching process were obtained: reaction rate constants at different temperatures, apparent activation energy of the process.

The article describes the theoretical basis of the high-frequency effect of increasing the mobility of ions in aqueous solutions under the action of an electric field and the possibilities of adapting this effect to the sorption treatment of wastewater and technical solutions.

Kinetic characteristics of the process of iron(II) sorption by ferromanganese nodules have been found: reaction rate constants at different temperatures, apparent activation energy of the process. The limiting stage of the process, which is a redox reaction of the first order, was determined.

Kinetic characteristics of the process of nickel cations sorption by ferromanganese nodules were determined: reaction rate constants at different temperatures, apparent activation energy of the process.

The isotherms of ion exchange of metal cations (Sr²⁺, Ni²⁺) and Na⁺ on iron-manganese nodules were obtained. The ion exchange is described by an equation similar to the Langmuir isotherm. The values of the limiting sorption and apparent ion exchange constant were calculated. The effective radii of sorbed strontium and nickel cations were determined.