استخراج فاز جامد توریم (IV) و اورانیم (VI) از محیط نیتراتی با نانوذرات مغناطیسی اصلاح شده با سیانکس 302

نوع مقاله: مقاله پژوهشی

نویسنده

پژوهشکده‌ی چرخه‌ی سوخت هسته‌ای، پژوهشگاه علوم و فنون هسته‌ای، سازمان انرژی اتمی ایران

چکیده

با استفاده از نانوذرات مغناطیسی اصلاح شده با سیانکس 302، یک جاذب مغناطیسی برای استخراج یون­های توریم و اورانیم از محیط­‌های نیتراتی ساختگی فراهم شد. توانایی و قابلیت نانوذرات مغناطیسی (10nm≈) پوشش داده شده با سیانکس 302 برای استخراج و پیش‌­تغلیظ هم­‌زمان توریم و اورانیم از محیط نیتراتی در روش ناپیوسته ارزیابی شد. اثر مقدار لیگاند، pH محیط، و غلظت اولیه­‌ی محلول یون­های فلزی بر رفتار استخراجی یون­‌های توریم و اورانیم بررسی شد. داده­‌های آزمایشگاهی حاکی از آن است که نسبت وزنی بهینه‌­ی سیانکس 302 به نانوذرات مغناطیسی، 10% وزنی، و مقدار pH بهینه­‌ی محلول برای استخراج هم‌­زمان یون­‌های توریم و اورانیم برابر با 6 است. این مقدار سیانکس قابلیت جذب  60 mg/Iیون توریم و اورانیم را دارد. تأثیر حضور محصولات شکافت [(I)Sr(II),Cs] و یون­‌های مزاحم از جمله (III)Mn(II),Mg(II),Cr (III),Fe و (III)Al نیز بررسی شد.

کلیدواژه‌ها


عنوان مقاله [English]

Solid Phase Extraction of Thorium (IV) and Uranium (VI) from Nitrate Medium Using Cyanex 302-Coated Magnetic Nanoparticles

نویسنده [English]

  • S A. Milani
چکیده [English]

Magnetic nanoparticles modifdied with Cyanex 302 were used for the separation and preconcentration of Th(IV) and U(VI) from synthetic nitrate solutions. The capacity of magnetic nanoparticles (≈10 nm) coated with Cyanex 302 for simultaneous separation and preconcentration of thorium and uranium from the nitratemedium was studied by means of the batch method. The effects of analytical parameters, including the amount of Cyanex 302, pH, and initial metal concentration on the extractive behavior of metal ions were systematically studied. The results showed that the optimum weight ratio of Cyanex 302 to magnetite nanoparticles was 10% and the optimum pH of solution for the simultaneous extraction of Th(IV) and U(VI) was equal to 6. The maximal capacity of the magnetite nanoparticles modifdied with 10w% Cyanex 302 was found to be 60 mg l-1 of thorium and uranium. The influences of the fission products [Cs(I), Sr(II)] and interfering ions, including Fe(III), Cr(III), Mg(II), Mn(II) and Al(III) were also investigated

کلیدواژه‌ها [English]

  • Solid Phase Extraction
  • Thorium and Uranium
  • Cyanex 302
  • Magnetic Nanoparticles

[1] A. Mellah, S. Chegrouche, M. Barkat, The removal of uranium(VI) from aqueous solutions onto activated carbon: kinetic and thermodynamic investigations, J. Colloid. Interf. Sci. 296 (2006) 434-441.

 [2] E.A. Deliyanni, D.N. Bakoyannakis, A.I. Zouboulis, K.A. Matis, Sorption of As(V) ions by akaganeite-type nanocrystals, Chemosphere 50 (2003) 155-163.

 

[3] M.D. KaminskiL. Nuñez, Extractant-coated magnetic particles for cobalt and nickel recovery from acidic solution, J. Magn. Magn. Mater. 194 (1999) 31-36.

 

[4] M. Faraji, Y. Yamini, M. Rezaee, Extraction of trace amounts of mercury with sodium dodecyle sulphate-coated magnetite nanoparticles and its determination by flow injection inductively coupled plasma-optical emission spectrometry, Talanta 81 (2010) 831–836.

 

[5] B.S. Shaibu, M.L.P. Reddy, A. Bhattacharyya, V.K. Manchanda, Evaluation of Cyanex 923-coated magnetic particles for the extraction and separation of lanthanides and actinides from nuclear waste streams, J. Magn. Magn. Mater. 301 (2006) 312-318.

 

[6] S. Sadeghi, H. Azhdari, H. Arabi, A. Zeraatkar Moghaddam, Surface modified magnetic Fe3O4 nanoparticles as a selective sorbent for solid phase extraction of uranyl ions from water samples, J. Hazard. Mater. 215-216 (2012) 208–216.

 

[7] Gh. Khayatian, Sh. Hassanpoor, Amir R.J. Azar, S. Mohebbi, Spectrophotometric determination of trace amounts of uranium(VI) using modified magnetic iron oxide nanoparticles in environmental and biological samples, J. Braz. Chem. Soc24(11) (2013).

 

[8] S.A. Milani, A.K. Darban, A. Shahbazi, Synthesis and characterization of Cyanex 272 modified super-paramagnetic magnetite nanoparticles, J. Nucl. Sci. Technol. 70 (2015) 64-76.

 

[9] A.P. Argekar, A.K. Hetty, Extraction of manganese(II) with bis(2, 4, 4- trimethylpentyl) mono-thio-phosphinic acid and its spectrophotometric determination with formaldoxime, Anal. Sci. 13(1)(1997) 131-135.


 

 

[10] N.E. El-Hefny, Kinetics and mechanism of extraction of Cu(II) by CYANEX 302 from nitrate medium and oxidative stripping of Cu(I) using Lewis cell technique, Chem. Eng. Process. 49(1) (2010) 84-90.

 

[11] Atlas of Eh-pH diagrams Intercomparison of thermodynamic databases Geological Survey of Japan Open File Report No.419 (May 2005).

 

[12] F. Seidi, A. Nilchi, F. Kargar Behbahani, S. Rasouli Garmaroudi, Study of uranium (VI) adsorption from aqueous solutions on the synthesized nanozeolite beta, J. Nucl. Sci. Technol. 66 (2014) 47-52.

 

[13] M. Wazne, X. Meng, G.P. Korfiatis, C. Christodoulatos, Carbonate effects on hexavalent uranium removal from water by nano-crystalline titanium dioxide, J. Hazard. Mater. 136(1) (2005) 47-52.

 

[14] M. Karve, R.V. Rajgor, Amberlite XAD-impregnated organophospininn acid extractant for separation of Uranium (VI) from rare earth elements, Desalination 232 (2008) 191-197.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[15] S.A. Milani, M.A. Salehi, N. Rahgozar, Preconcentration and Determination of Uranium in Water Samples by Cloud Point Extraction Coupled with Alpha Liquid Scintillation Spectrometry, J. Nucl. Sci. Technol. 58 (2012) 24-34.

 

[16] A. Nilchi, S. Rasouli Garmaroudi, T. Shariati Dehaghan, Sorption of uranium (VI) and thorium (IV) ions from aqueous solutions by nanoparticles of ion exchanger SnO2,J. Nucl. Sci. Technol. 60(1) (2012) 15-21.

 

[17] SD. Yusan, S. Akyil, Sorption of uranium(VI) from aqueous solutions by akaganeite, J. Hazard. Mater. 160(2-3) (2008) 388-395.

 

[18] JP. Chen, L. Yang, Study of a heavy metal biosorption onto raw and chemically modified Sargassum sp. via spectroscopic and modeling analysis, Langmuir 22(21) (2006) 8906-8914.

 

[19] S.A. Milani, M. Karimi, Recovery of  thorium (IV) and uranium (VI) from aqueous solutions using Cyanex 272-modified supeparamagnetic Magnetite nanoparticles, Journal of Applied Research in Chemistry (JARC) IAU-Tehran Norh Brasnch, (in press).