Sorption Efficiency of a New Sorbent towards Cadmium(II): Methylphosphonic Acid Grafted Polystyrene Resin

Abstract

A new chelating polymeric sorbent has been developed using polystyrene resin grafted with phosphonic acid. After characterization by FTIR and elementary analysis, the new resin has been investigated in liquid-solid extraction of cadmium(II). The results indicated that phosphonic resin could adsorb Cd(II) ion effectively from aqueous solution. The adsorption was strongly dependent on the pH of the medium and the optimum pH value level for better sorption was between 3.2 and 5.2. The influence of other analytical parameters including contact time, amount of resin, metal ion concentration, and the presence of some electrolytes was investigated. The maximum uptake capacity of Cd(II) ions was 37,9 mg·g−1grafted resin at ambient temperature, at an initial pH value of 5.0. The overall adsorption process was best described by pseudo second-order kinetic. When Freundlich and Langmuir isotherms were tested, the latter had a better fit with the experimental data. Furthermore, more than 92% of Cd(II) could be eluted by using 1.0 mol·L−1HCl in one cycle.

Efficient removal of uranium, cadmium and mercury from aqueous solutions using grafted hydrazide-micro-magnetite chitosan derivative

“…Metal sorption involves electron sharing with carbonyl (and/or -OH) groups and amine groups; as a consequence the peaks referred to (C-C, C-H), (C-NH or C-NH 2 ), (C(-O, =N), C-O-C) and (O-C-O) are identified after Cd(II) binding at 283. 95 ? ), respectively.…”

Synthesize of Poly (acrylamide-co-itaconic/TiO2) Nanocomposite for Ce(III) Sorption from Monazite Leachate

“…From the results shown in Fig. 10 for the sorbed amount of Ce(III) onto C6P(AAMco-IA/TiO 2 ) nanocomposite at different temperatures at 298, 308, and 318 K, it is obvious that the sorbed amount increases by raising the temperature due to acceleration of some originally slow sorption steps or due to the enhanced mobility of Ce(III) ions from the solution to the functionalized C6P(AAM-co-IA/TiO 2 ) surface [36].…”

Synthesize of Poly (Acrylamide-Co-Itaconic/TiO2) Nanocomposite for Ce(III) Sorption from Monazite Leachate

“…From the results shown in Fig. 10 for the sorbed amount of Ce(III) onto C6P(AAMco-IA/TiO 2 ) nanocomposite at different temperatures at 298, 308, and 318 K, it is obvious that the sorbed amount increases by raising the temperature due to acceleration of some originally slow sorption steps or due to the enhanced mobility of Ce(III) ions from the solution to the functionalized C6P(AAM-co-IA/TiO 2 ) surface [36]. Fig.…”