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Degradation of Lix984N and its effect on interfacial emulsion

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Abstract

The organic phase separated from the interfacial crud provided by Dexing copper mine in Jiangxi, China, was analyzed by combined gas chromatography-mass spectroscopy. The results show that many kinds of emphiphiles containing such hydrophilic groups as carbonyl, carboxyl, sulphonyl or acylamine exist in organic phase. Conclusively, Lix984N would degrade gradually during a long-term contact with the acidic aqueous feed and strip reagents. Lix84 and nonylphenol as effective components of Lix984N degraded almost completely after long-term recycling. Lix984N degraded through such reactions as Beckmann rearrange, hydrolysis and sulphofication. The degradation of Lix984N would deteriorate solvent extraction and disengagement performance, and result in a more stable interfacial emulsion.

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Authors and Affiliations

  1. Department of Materials Engineering, Shanghai Institute of Technology, Shanghai, 200233, China

    Liu Xiao-rong PhD  (刘晓荣) (Associate professor)

  2. School of Resources Processing and Bioengineering, Central South University, Changsha, 410083, China

    Qiu Guan-zhou  (邱冠周) & Hu Yue-hua  (胡岳华)

Authors
  1. Liu Xiao-rong PhD  (刘晓荣)
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  2. Qiu Guan-zhou  (邱冠周)
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  3. Hu Yue-hua  (胡岳华)
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Correspondence to Liu Xiao-rong PhD  (刘晓荣).

Additional information

Foundation item: Project (P1502) supported by Shanghai Leading Academic Discipline

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Liu, Xr., Qiu, Gz. & Hu, Yh. Degradation of Lix984N and its effect on interfacial emulsion. J Cent. South Univ. Technol. 13, 668–672 (2006). https://doi.org/10.1007/s11771-006-0028-2

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  • DOI: https://doi.org/10.1007/s11771-006-0028-2

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