Sorption and Desorption Studies of Pb(II) and Ni(II) from Aqueous Solutions by a New Composite Based on Alginate and Magadiite Materials.

ABSTRACT: A new composite material based on alginate and magadiite/Di-(2-ethylhexyl) phosphoric acid (CAM-D2EHPA) was successfully prepared by previous impregnation of layered magadiite with D2EHPA extractant, and then immobilized into the alginate matrix. Air dried beads of CAM-D2EHPA were characterized by FTIR and SEM⁻EDX techniques. The sorbent was used for the separation of lead and nickel from nitrate solutions; the main parameters of sorption such as contact time, pH of the solution, and initial metal concentration were studied. The beads recovered 94% of Pb(II) and 65% of Ni(II) at pH 4 from dilute solutions containing 10 mg L^-1 of metal (sorbent dosage, S.D. 1 g L^-1). The equilibrium data gave a better fit using the Langmuir model, and kinetic profiles were fitted using

SUBMITTER: Attar K 

PROVIDER: S-EPMC6419164 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature