Boron concentration by industrial anion exchanger resins from model solutions in a dynamic mode.

Kamchatka geothermal fields should be considered not only as heat and energy resources but also as possible sources of chemical compounds. Boron is one of such chemical elements. The Pauzhetskaya, Nalychevskoe, Pushchinskoe, Kireunskoe steam-hydrothermal fields are the most promising for boron recovery. Data obtained from experimental studies on boric acid sorption using the industrial ion exchangers KU-2-8, AV-17-8, EDE-10P, and AN-31 are presented in this article. The experiments are conducted in a dynamic mode, and the results showed that the method of sequential/consecutive two-stage sorption is most effective for: 1 - removal of the main part of cations using KU-2-8 cation exchanger; 2 - boric acid recovery using weakly basic AN-31 anion exchanger. The sorption capacity of the studied anion exchangers increases in the order as follows: AV-17-8 <EDE-10P < AN-31.