| Autor: |
Linnikov ОD; Ural Branch of the Russian Academy of Sciences, Institute of Solid State Chemistry, 91 Pervomayskaya St., Ekaterinburg 620990, Russia E-mail: linnikov@mail.ru., Rodina IV; Ural Branch of the Russian Academy of Sciences, Institute of Solid State Chemistry, 91 Pervomayskaya St., Ekaterinburg 620990, Russia E-mail: linnikov@mail.ru., Baklanova IV; Ural Branch of the Russian Academy of Sciences, Institute of Solid State Chemistry, 91 Pervomayskaya St., Ekaterinburg 620990, Russia E-mail: linnikov@mail.ru., Suntsov AY; Ural Branch of the Russian Academy of Sciences, Institute of Solid State Chemistry, 91 Pervomayskaya St., Ekaterinburg 620990, Russia E-mail: linnikov@mail.ru., Tyutyunnik AP; Ural Branch of the Russian Academy of Sciences, Institute of Solid State Chemistry, 91 Pervomayskaya St., Ekaterinburg 620990, Russia E-mail: linnikov@mail.ru. |
| Abstrakt: |
The sorption of copper(II) ions in a wide range of pH by two Russian carbon sorbents BAU-A and MIU-S was studied. Sorbents varied in structure, surface area, pH of the point of zero charge (pH ZPC ), and graphitization degree. The sorption studies were conducted in batch mode. The removal of copper(II) ions from a solution at pH 4, 5, 6, and 6.7 is described by the classical adsorption isotherms of Freundlich, Langmuir, and Dubinin-Radushkevich. With an increase in pH from 4 to 6.7, the sorption capacity of sorbents increases, from 0.910 to 7.163 mg/g for BAU-A, and from 0.265 to 3.307 mg/g for MIU-S. The relationship between the degree of crystallinity and the sorption properties of sorbents has been established. |
