Processo alternativo para remoção de cobre (II) e níquel (II) de soluções aquosas utilizando cápsulas de quitosana - Álcool Polivinílico

Antoninho Valentini, Mauro C. M. Laranjeira, Simone Fiori, Valfredo T. de Fávere, Marilene Klug
2000 Química Nova  
Recebido em 14/7/98; aceito em 16/8/99 ALTERNATIVE PROCESS FOR REMOVAL OF COPPER AND NICKEL IN AQUEOUS SOLU-TIONS, USING CHITOSAN -POLY(VINYL ALCOHOL) CAPSULES. Capsules were prepared from chitosan (QTS)-poly(vinyl alcohol) (PVA) blend by saline coacervation and then by formalization. A adsorbent based on chitosan, insoluble on acid solution, was obtained. The morphology, average diameters of QTS/PVA capsules and their pores were studied by using scanning electron microscopy. The
more » ... rption of dimethylglioxime and ethylenediaminetetracetate by the capsules were studied. The removal of the ion nickel (II) and copper (II), was more effective than by using unloaded capsules.
doi:10.1590/s0100-40422000000100003 fatcat:7qd6zbww7rcgvmkkzdri5qr7te