Physical and Chemical Regularities of Phosphorus and Beryllium Recovery by the Sorbents Based on Acrylic Fiber Impregnated by Iron Hydroxide (III)

The paper investigates the physicochemical regularities (kinetics and isotherm) of phosphorus beryllium recovery by sorbents based on polyacrylonitrile (PAN) fiber Fe(OH)3 obtained various methods: PAN or pre-hydrolyzed with precipitation FeCl3 ammonia, using ready-made electrochemically generated Na2FeO4, treated an alkaline solution as well their comparison granular aluminum oxide. Langmuir, Freudlich Dubinin–Radushkevich models show high performance materials for sorption stable P Be used tracers release 7Be, 32P, 33P from seawater. kinetic data are processed intraparticle diffusion pseudo-first-order, pseudo-second-order, Elovich models. Optimal conditions obtaining established, namely, effect NaOH concentration at stages preparation properties methods.