A Polymeric Adsorbent for Removal and Recovery of Nickel from Aqueous Media

Authors : Berna SARAÇOĞLU KAYA

Pages : 159-169

Doi:10.15671/hjbc.634459

View : 25 | Download : 8

Publication Date : 2020-04-19

Article Type : Research Paper

Abstract :The Interpenetrating Polymer Network insert ignore into journalissuearticles values(IPN); structure was obtained by gamma radiation of solution of polyethylene glycol insert ignore into journalissuearticles values(PEG);insert ignore into journalissuearticles values(35000MW); in an acrylonitrile insert ignore into journalissuearticles values(AN); to 14 and 60kGy doses were amidoximated with hydroxylamine solution at optimum amidoximation conditions. Effects of pH insert ignore into journalissuearticles values(2-10); and mNi/mIPN ratio insert ignore into journalissuearticles values(0.002-0.5); in Ni 2+ adsorption were examined by batch process and optimum values were determined as 8 and 0.4 for both doses, respectively. Also, the effect of flow rate to Ni 2+ adsorption was examined by the reflux flow process with a fixed-bed reactor at room temperature. Optimum flow rate is determined as 6mL/s at optimum pH. Ni 2+ adsorption studies were carried out in batch insert ignore into journalissuearticles values(pH=6 and 8); and flow insert ignore into journalissuearticles values(pH=8); systems. Maximum adsorption values reached for irradiated to 14 and 60kGy doses and amidoximated IPNs were given as 105 and 99 mgNi/gIPN in batch system insert ignore into journalissuearticles values(pH=6);, 378 and 361 mgNi/gIPN in batch system insert ignore into journalissuearticles values(pH=8); and 891 and 673mgNi/gIPN in flow system insert ignore into journalissuearticles values(pH=8);, respectively. Maximum elution efficiency was obtained for HCl as being 99.5% and 66.1% for IPNs irradiated to 14 and 60kGy doses and amidoximated, respectively. FTIR results showed that HCl caused structural deformation. Minimum elution efficiency was obtained for insert ignore into journalissuearticles values(NH 4 ); 2 CO 3 as being 60.1% and 58.2% for IPNs irradiated to 14 and 60kGy, respectively, by the minimum deformation.
Keywords : IPN, nickel, adsorption, elution