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Founded in 1987， Bimonthly
Supervisor：Jiangxi University Of Science And Technology
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Jiangxi Nonferrous Metals Society
ISSN：1674-9669
CN：36-1311/TF
CODEN YJKYA9
Volume 2 Issue 4
Aug.  2011
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FAN Jin-jun, DENG Sheng-hua, XIE Fang-hao, YANG You-ming. Experiment on Back-extraction of Cr(Ⅲ) in Acidic Extractant by Alkali[J]. Nonferrous Metals Science and Engineering, 2011, 2(4): 97-100.
Citation: FAN Jin-jun, DENG Sheng-hua, XIE Fang-hao, YANG You-ming. Experiment on Back-extraction of Cr(Ⅲ) in Acidic Extractant by Alkali[J]. Nonferrous Metals Science and Engineering, 2011, 2(4): 97-100.
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Experiment on Back-extraction of Cr(Ⅲ) in Acidic Extractant by Alkali

  • Faculty of Materials and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

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  • Received Date: January 25, 2011
  • Published Date: August 30, 2011
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    • Abstract
  • Back-extraction of chromium from acidic extractant is difficult, whose recovery is generally low. This paper studies the back -extraction of Cr (Ⅲ) in acidic extractant by alkali based on the different complexing speciation of Cr (Ⅲ) and OH- in various acidic solution. The optimized conditions for P204 and P507 extractants are as follows: O/A is 1, sodium hydroxide concentrations are 0.5 mol/L and 2 mol/L, separately; back-extraction times are 10 and 20 min, and the recoveries reach 98.3 % and 98.8% after 4 steps back -extraction at room temperature.
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    • References (12)
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