Optimization of Samarium Extraction via Nanofluid-Based Emulsion Liquid Membrane Using Cyanex 272 as Mobile Carrier
Samarium as a rare-earth element is playing a growing important role in high technology. Traditional methods for extraction of rare earth metals such as ion exchange and solvent extraction have disadvantages of high investment and high energy consumption. Emulsion liquid membrane (ELM) as an improved solvent extraction technique is an effective transport method for separation of various compounds from aqueous solutions. In this work, the extraction of samarium from aqueous solutions by ELM was investigated using response surface methodology (RSM). The organic membrane phase of the ELM was a nanofluid consisted of multiwalled carbon nanotubes (MWCNT), Span80 as surfactant, Cyanex 272 as mobile carrier, and kerosene as base fluid. 1 M nitric acid solution was used as internal aqueous phase. The effects of the important process parameters on samarium extraction were investigated, and the values of these parameters were optimized using the Central Composition Design (CCD) of RSM. These parameters were the concentration of MWCNT in nanofluid, the carrier concentration, and the volume ratio of organic membrane phase to internal phase (Roi). The three-dimensional (3D) response surfaces of samarium extraction efficiency were obtained to visualize the individual and interactive effects of the process variables. A regression model for % extraction was developed, and its adequacy was evaluated. The result shows that % extraction improves by using MWCNT nanofluid in organic membrane phase and extraction efficiency of 98.92% can be achieved under the optimum conditions. In addition, demulsification was successfully performed and the recycled membrane phase was proved to be effective in the optimum condition.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1129075Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 570
References:R. Torkaman, M. A. Moosavian, J. Safdari, and M. Torab-Mostaedi, “Synergistic extraction of gadolinium from nitrate media by mixtures of bis (2, 4, 4-trimethylpentyl) dithiophosphinic acid and di-(2-ethylhexyl) phosphoric acid,” Ann. Nucl. Energy, vol. 62, pp. 284–290, Dec. 2013.
 R. Torkaman, M. A. Moosavian, M. Torab-Mostaedi, and J. Safdari, “Solvent extraction of samarium from aqueous nitrate solution by Cyanex 301 and D2EHPA,” Hydrometallurgy, vol. 137, pp. 101–107, May 2013.
 C.-B. Xia, Y.-Z. Yang, X.-M. Xin and S.-X. Wang, “Extraction of rare earth metal samarium by microemulsion,” J. Radioanal. Nucl. Chem., vol. 275, no. 3, pp. 535–540, Mar. 2008.
 Y. A. El-Nadi, “Effect of diluents on the extraction of praseodymium and samarium by Cyanex 923 from acidic nitrate medium,” J. Rare Earths, vol. 28, pp. 215–220, Apr. 2010.
 K. S. Hasheminasab and A. R. Fakhari, “Application of nonionic surfactant as a new method for the enhancement of electromembrane extraction performance for determination of basic drugs in biological samples,” J. Chromatogr. A, vol. 1378, pp. 1–7, Jan. 2015.
 M. Soniya and G. Muthuraman, “Comparative study between liquid–liquid extraction and bulk liquid membrane for the removal and recovery of methylene blue from wastewater,” J. Ind. Eng. Chem., vol. 30, pp. 266–273, Oct. 2015.
 P. Zaheri, H. Abolghasemi, M. Ghannadi Maraghe, and T. Mohammadi, “Intensification of Europium extraction through a supported liquid membrane using mixture of D2EHPA and Cyanex272 as carrier,” Chem. Eng. Process. Process Intensif., vol. 92, pp. 18–24, Jun. 2015.
 H. Jiao, W. Peng, J. Zhao, and C. Xu, “Extraction performance of bisphenol A from aqueous solutions by emulsion liquid membrane using response surface methodology,” Desalination, vol. 313, pp. 36–43, Mar. 2013.
 M. Rajasimman and P. Karthic, “Application of response surface methodology for the extraction of chromium (VI) by emulsion liquid membrane,” J. Taiwan Inst. Chem. Eng., vol. 41, pp. 105–110, Jan. 2010.
 I. Akartuna, A. R. Studart, E. Tervoort, U. T. Gonzenbach, and L. J. Gauckler, “Stabilization of Oil-in-Water Emulsions by Colloidal Particles Modified with Short Amphiphiles,” Langmuir, vol. 24, pp. 7161–7168, Jul. 2008.
 M. Raji-Asadabadi, H. Abolghasemi, M. G. Maragheh, and P. Davoodi-Nasab, “On the mean drop size of toluene/water dispersion in the presence of silica nanoparticles,” Chem. Eng. Res. Des., vol. 91, pp. 1739–1747, Sep. 2013.
 J. S. Basha and R. B. Anand, “An experimental investigation in a diesel engine using carbon nanotubes blended water-diesel emulsion fuel,” Proc. Inst. Mech. Eng. Part A J. Power Energy, vol. 225, pp. 279–288, May 2011.
 N. M. Briggs, J. S. Weston, B. Li, D. Venkataramani, C. P. Aichele, J. H. Harwell, and S. P. Crossley, “Multiwalled Carbon Nanotubes at the Interface of Pickering Emulsions,” Langmuir, vol. 31, pp. 13077–13084, Dec. 2015.
 J. K. Lee, J. Koo, H. Hong, and Y. T. Kang, “The effects of nanoparticles on absorption heat and mass transfer performance in NH3/H2O binary nanofluids,” Int. J. Refrig., vol. 33, pp. 269–275, Mar. 2010.
 A. Mirzazadeh Ghanadi, A. Heydari Nasab, D. Bastani, and A. A. Seife Kordi, “The Effect of Nanoparticles on the Mass Transfer in Liquid–Liquid Extraction,” Chem. Eng. Commun., vol. 202, pp. 600–605, May 2015.
 S. Venkatesan and K. M. Meera Sheriffa Begum, “Emulsion liquid membrane pertraction of benzimidazole using a room temperature ionic liquid (RTIL) carrier,” Chem. Eng. J., vol. 148, pp. 254–262, May 2009.