STUDY OF THE REGULARITIES OF THE SORPTION PROCESS OF IRON IONS (III) BY NATURAL SORBENT FOR THE WATER TREATMENT

Resnyanskaya Anna Stanislavovna  -  Candidate of Chemical Sciences, Associate Professor, Associate Professor of chemical department, Астраханский государственный университет имени В. Н. Татищева, 414056, Astrakhan, st. Tatishcheva, 20a, resnyanskaya-as@yandex.ru

Dzhigola Lyudmila Aleksandrovna  -  candidate of chemical sciences, associate professor, Head of the Chemiсal Department , Astrakhan State University named by V. N. Tatishchev, 414000, Astrakhan, Shahumyan sq., 1, djegola@mail.ru

Vasiliev Vladimir Anatolyevich  -  Candidate of Chemical Sciences,, Associate Professor, Don State Technical University, 344000, Rostov-on-Don, Gagarin Square, 1,

Currently, the content of iron (III) ions in natural waters has increased due to their entry into reservoirs with wastewater from various enterprises. Therefore, the problem of increased content of iron ions in water becomes relevant. A large number of methods are used to purify water from iron ions, but the most common are sorption and ion exchange methods. This work is devoted to the study of the adsorption process of iron (III) ions on natural mineral raw materials - marl from the Baskunchak deposit in the Astrakhan region. The experimental results were described using the adsorption isotherms of the Langmuir, Freundlich, Temkin and Dubinin-Radushkevich models.

Key words: wastewater, iron removal, adsorption, Langmuir isotherm, marl, the Baskunchak deposit, Freundlich's equation, Temkin's model, mineral sorbent