Investigation of uranium sorption from acidic sulfate solution using organosilicate compound and Amberlite IRA 402

Abstract

KEYWORDSSorption of uranium from 6 M free H2SO4 on two anionic sorbents containing different complexing groups, the synthetic Organosilicate compound (OSC) and the Amberlite IRA 402, were investigated. The sorption mechanisms of uranium on both sorbents were also studied. Experimental data indicated that the uranium sorption on either Amberlite IRA 402 or OSC is a function in pH, depending strongly on the aqueous uranyl species. Both sorbents reached a maximum at slightly acidic (pH = ~1) when uranium is exist in the form of negatively charged sulfate complexes. These sorption values were attributed to the ion exchange process between UO2 +2 species and interlayer anions on Amberlite IRA 402 and OSC in acidic solutions. Uranium sorbed on OSC through formation of ML3 complex and ML2 for Amberlite IRA 402. Also it was found that the uranium sorption capacity was 20 and 80 mg/g for Amberlite IRA 402 and OSC, respectively, and its elution were effective even with 5 mL of 1 mol/L KNO3. Sorption Uranium Investigation Sulfate solution Amberlite IRA 402 Organosilicate compound

Uranium(VI) recovery from acidic leach liquor by Ambersep 920U SO4 resin: Kinetic, equilibrium and thermodynamic studies

“…Uranium could be quantitatively isolated from its descendants using Dowex 1 Â 8 (20e50 mesh) or Amerlite IRA (100 mesh) resins to recover uranium ions (Guzm an, 2016). Ion exchange resins also are successfully employed for uranium separation from its solutions, among these resins, Amberlite IRA 402 strong base anion exchanger is applied for uranium recovery from sulfate leach liquor (Kouraim, Sheta, & Abd Elaal, 2014). Adsorption of uranium from sulfate solutions is also studied using Amberlite IRA-402 resin (Solgy et al, 2015), uranium sorption is applied onto amberlite CG-400 anion exchange resin in the presence of phosphate anions (Semnani, Asadi, Samadfam, & Sepehrian, 2012).…”

Reduksi Torium Pada Limbah Cair Pengolahan Monasit Menggunakan Resin Penukar Anion

“…Berdasarkan penelitian terdahulu, semakin besar massa resin semakin besar kemampuan resin dalam menyerap suatu ion [11,12]. Demikian pula dengan waktu kontak, semakin lama waktu kontak semakin banyak ion yang teradsorpsi hingga titik jenuh [13].…”

“…Penelitian adsorpsi U 4+ , Th 4+ dan logamlogam berat dengan resin penukar anion Amberlite IRA402 menunjukkan bahwa resin tersebut dapat menyerap hingga 90% uranium dalam waktu singkat [11][12][13][14]. Penelitian lainnya menggunakan metode resin penukar ion Tulsion A23 mampu menurunkan konsentrasi unsur-unsur radioaktif, fosfat, nitrat, dan Cr 6+ pada limbah metalurgi [15][16][17].…”

Study on removal behavior and separation efficiency of naturally occurring bentonite for sulfate from water by continuous column and batch methods

“…The linearized form of the Freundlich isotherm equation is expressed in e F e 1 ln q ln K ln C n ( 2 ) where Ce (mg/ L) is the concentration of sulfate at equilibrium, KL (L/mg), and qmax (mg/g) are the Langmuir constants related to the energy of adsorption and maximum capacity, respectively; KF and 1/n are the Freundlich constants related to the adsorption capacity and intensity, respectively; and qe (mg/g) is the mass of sulfate adsorbed per mass of adsorbent [19]. The results of fitting Freundlich and Langmuir equations to isotherm curves which are showed in Figure 2 and 3 are summarized in Table 1.…”