METHOD OF EXTRACTION OF PENTAVALENT ARSENIC FROM THE AQUEOUS SOLUTION

摘要

FIELD: inorganic chemistry. SUBSTANCE: method involves sorption of pentavalent arsenic on polyampholite in the iron form, its following regeneration with preparing of arsenic-containing desorbate. Before sorption of arsenic polyampholite in the iron form is treated with alkaline solution at concentration 2-4 mole/l, and its regeneration is carried out with alkali solution. Method is used for purification of pentavalent arsenic solutions by sorption on the liquid polyampholite in the iron form. EFFECT: enhanced dynamic capacity exchange by arsenic, simplified purification. 2 cl