Extraction of rare earths using mixtures of sec-octylphenoxy acetic acid and organophosphorus acids

Naizhong Song; Xiaowei Zhao; Qiong Jia; Weihong Zhou; Wuping Liao

Korean Journal of Chemical Engineering, Vol.27, No.4, 1258-1261, July, 2010

DOI10.1007/s11814-010-0194-7 Export Citation

Extraction of rare earths using mixtures of sec-octylphenoxy acetic acid and organophosphorus acids

Naizhong Song, Xiaowei Zhao, Qiong Jia^†, Weihong Zhou, and Wuping Liao¹

College of Chemistry, Jilin University, Changchun, P. R. China
¹State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P. R. China

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The extraction of rare earths from nitrate medium using three organophosphorus acids, 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (HEHEHP), di-(2-ethylhexyl) phosphoric acid (D2EHPA), bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex272), and their mixtures with sec-octylphenoxy acetic acid (CA12) has been studied in detail. The mixtures have different extraction effects on various rare earths. Synergistic extraction effects are only found when light rare earths and yttrium (III) are extracted with mixtures of D2EHPA and CA12. The possibilities of separating the rare earths with these mixtures are investigated according to the extractabilities. It is feasible and advantageous to separate yttrium (III) from the lanthanoids (III) with HEHEHP + CA12 and D2EHPA+CA12 mixtures at proper extractant ratios. The separation of yttrium (III) from heavy rare earths is also possible with mixtures of Cyanex272 and CA12.

Keywords:Extraction;Rare Earths;Organophosphorus Acids;sec-Octylphenoxy Acetic Acid;Separation

[References]

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Wang XL, Li W, Meng SL, Li DQ, J. Chem. Technol. Biotechnol., 81(5), 761 (2006)
Xiong Y, Li W, Wu DB, Li DQ, Meng SL, Sep. Sci. Technol., 41(1), 167 (2006)
Xiong Y, Wang XL, Li DQ, Sep. Sci. Technol., 40(11), 2325 (2005)
Zahir MH, Masuda Y, Talanta., 44, 365 (1997)
Gill JS, Marwah UR, Misra BM, Sep. Sci. Technol., 29(2), 193 (1994)
Masuda Y, Zahir MH, Talanta., 42, 93 (1995)
Jia Q, Li ZY, Zhou WH, Li HF, J. Chem. Technol. Biotechnol., 84, 565 (2008)
Sun XB, Zhao JM, Meng SL, Li DQ, Anal. Chim. Acta., 533, 83 (2005)
Sun XB, Wang JP, Li DQ, Li HF, Sep. Purif. Technol., 50(1), 30 (2006)
Li W, Wang XL, Meng SL, Li DQ, Xiong Y, Sep. Purif. Technol., 54(2), 164 (2007)
Pearson RG, J. Am. Chem. Soc., 85, 3533 (1963)
Xu GX, Wang WQ, Wu JG, Li BL, Wu GB, Shi N, At. Energy Sci. Technol., 7, 487 (1963)
Jia Q, Shang QK, Zhou WH, Ind. Eng. Chem. Res., 43(21), 6703 (2004)
Jia Q, Liao WP, Li DQ, Niu CJ, Anal. Chim. Acta., 477, 251 (2003)

[Referenced By]

[1] Prakorn R, Weerawat P, Ura P, Korean J. Chem. Eng., 23(1), 85 (2006)

[2] Fu NX, Tanaka M, Mater. Trans., 47, 136 (2006)

[3] Rabie KA, Hydrometallurgy., 85, 81 (2007)

[4] Saleh MI, Bari MF, Saad B, Hydrometallurgy., 63, 75 (2002)

[5] Hill C, Madic C, Baron P, Ozawa M, Tanaka Y, J. Alloys Compd., 271-273, 159 (1998)

[6] Jia Q, Zhan CH, Li DQ, Niu CJ, Sep. Sci. Technol., 39(5), 1111 (2004)

[7] Zhao XW, Jia Q, Zhou WH, Korean J. Chem. Eng., In press.

[8] Prakorn R, Ura P, Korean J. Chem. Eng., 20(4), 724 (2003)

[9] Wu DB, Zhang Q, Bao BR, Ind. Eng. Chem. Res., 46(19), 6320 (2007)

[10] Zhang ZM, Tan YL, Chin. J. Process Eng., 14, 30 (1993)

[11] Huang XW, Li JN, Long ZQ, Zhang YQ, Xue XX, Zhu ZW, J. Rare Earths., 26, 410 (2008)

[12] Huang XW, Li JN, Zhang YQ, Long ZQ, Wang CM, Xue XX, Chin. J. Nonferrous Metals., 18, 366 (2008)

[13] Bao FY, Zhang WM, Rare Earths., 16, 85 (1995)

[14] Wang XL, Li W, Meng SL, Li DQ, J. Chem. Technol. Biotechnol., 81(5), 761 (2006)

[15] Xiong Y, Li W, Wu DB, Li DQ, Meng SL, Sep. Sci. Technol., 41(1), 167 (2006)

[16] Xiong Y, Wang XL, Li DQ, Sep. Sci. Technol., 40(11), 2325 (2005)

[17] Zahir MH, Masuda Y, Talanta., 44, 365 (1997)

[18] Gill JS, Marwah UR, Misra BM, Sep. Sci. Technol., 29(2), 193 (1994)

[19] Masuda Y, Zahir MH, Talanta., 42, 93 (1995)

[20] Jia Q, Li ZY, Zhou WH, Li HF, J. Chem. Technol. Biotechnol., 84, 565 (2008)

[21] Sun XB, Zhao JM, Meng SL, Li DQ, Anal. Chim. Acta., 533, 83 (2005)

[22] Sun XB, Wang JP, Li DQ, Li HF, Sep. Purif. Technol., 50(1), 30 (2006)

[23] Li W, Wang XL, Meng SL, Li DQ, Xiong Y, Sep. Purif. Technol., 54(2), 164 (2007)

[24] Pearson RG, J. Am. Chem. Soc., 85, 3533 (1963)

[25] Xu GX, Wang WQ, Wu JG, Li BL, Wu GB, Shi N, At. Energy Sci. Technol., 7, 487 (1963)

[26] Jia Q, Shang QK, Zhou WH, Ind. Eng. Chem. Res., 43(21), 6703 (2004)

[27] Jia Q, Liao WP, Li DQ, Niu CJ, Anal. Chim. Acta., 477, 251 (2003)