Recovery of Lanthanum(III) and Nickel(II) Ions from Acidic Solutions by the Highly Effective Ion Exchanger

Abstract

The recovery of La(III) and Ni(II) ions by a macroporous cation exchanger in sodium form (Lewatit Monoplus SP112) has been studied in batch experiments under varying HNO3 concentrations (0.2–2.0 mol/dm3), La(III) and Ni(II) concentrations (25–200 mg/dm3), phase contact time (1–360 min), temperature (293–333 K), and resin mass (0.1–0.5 g). The experimental data revealed that the sorption process was dependent on all parameters used. The maximum sorption capacities were found at CHNO3 = 0.2 mol/dm3, m = 0.1 g, and T = 333 K. The kinetic data indicate that the sorption followed the pseudo-second order and film diffusion models. The sorption equilibrium time was reached at approximately 30 and 60 min for La(III) and Ni(II) ions, respectively. The equilibrium isotherm data were best fitted with the Langmuir model. The maximum monolayer capacities of Lewatit Monoplus SP112 were equal to 95.34 and 60.81 mg/g for La(III) and Ni(II) ions, respectively. The thermodynamic parameters showed that the sorption process was endothermic and spontaneous. Moreover, dynamic experiments were performed using the columns set. The resin regeneration was made using HCl and HNO3 solutions, and the desorption results exhibited effective regeneration. The ATR/FT-IR and XPS spectroscopy results indicated that the La(III) and Ni(II) ions were coordinated with the sulfonate groups.

Medical Plant Extract Purification from Cadmium(II) Using Modified Thermoplastic Starch and Ion Exchangers

“…Their surface is typical of macroporous materials ( Figure 7 ). Analogous results were presented in [ 49 , 50 , 51 ].…”

Capture and Release Mechanism of Ni and La Ions via Solid/Liquid Process: Use of Polymer-Modified Clay and Activated Carbons

“…On the basis of previous literature indications [ 15 ], metal release at very low pH (pH = 1) has been experienced. In the authors’ opinion, harsh conditions can provide information on ion-sorbent interaction strength that is useful enough to satisfy both landfill and recovery applications.…”

“…Each adsorbent has its own characteristics and adsorption capacity, and large numbers of studies have been focused on developing materials with improved performance and lower costs. For example, improvement of the removal efficiency can be pursued by the modification of shape, size, physical and chemical nature of the adsorbents, as exemplified in several recent reports in the open literature [ 10 , 11 , 12 , 13 , 14 , 15 ].…”

“…To the best authors’ knowledge, no studies considering such sorbents systems and solution composition have been reported in the literature. Furthermore, different sorbents’ nature, modifiers, solutions concentration and compositions have been reported and studied [ 9 , 18 , 20 , 28 , 32 , 38 , 39 ] Moreover, few papers reported mixed La-Ni solutions [ 15 ] or assessed both capture and release mechanisms [ 8 , 40 , 41 ].…”

Development of phosphoryl-functionalized algal-PEI beads for the sorption of Nd(III) and Mo(VI) from aqueous solutions – Application for rare earth recovery from acid leachates

“…Solvent extraction is highly attractive for the recovery of valuable metals at high relative concentrations [1,3]; however, environmental impact (associated with organic losses) and economic constraints may limit its application in the case of dilute effluents. Ionexchange [4][5][6], chelating resins [7,8], impregnated resins [9], nanomaterials [10], carbon-based sorbents [11] or metal organic framework [12] offer complementary possibilities for the recovery of valuable metals from low-concentration solutions (less than 200 mg L − 1 ). Alternative materials proceeding from natural sources (biopolymers, biomass) have been used directly for the recovery of valuable metals [13,14 15,16] or after functionalization [17].…”