A comparative study of vanadium extraction by Aliquat-336 from acidic and alkaline media with application to spent catalyst
A comparative study of vanadium extraction by Aliquat-336 from acidic and alkaline media with application to spent catalyst
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DOI：
10.1016/j.minpro.2009.03.005
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发表时间：
2009-08-01
影响因子：
--
通讯作者：
Nayl, A. A.
中科院分区：
文献类型：
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作者：
El-Nadi, Y. A.;Awwad, N. S.;Nayl, A. A.
采用Aliquat-336（甲基三辛基氯化铵）萃取剂溶于含10%正辛醇的煤油中，分别从盐酸和氢氧化钠介质中萃取钒进行了对比研究。分别考察了酸、碱、萃取剂、金属浓度、相比、装载量以及温度等参数对萃取过程的影响。在酸性和碱性溶液中，钒(V)的形态分别为（H2V10O28）（4-）和（VO3OH）（2-）。在此基础上，推导了钒的萃取平衡，提出了钒的最佳萃取条件。将该方法应用于硫酸工业用废催化剂的处理，整个过程中钒的回收率为93.0%。(C) 2009 Elsevier B.V.版权所有
A comparative study of the solvent extraction of vanadium(V) from hydrochloric acid and sodium hydroxide media was separately carried out using Aliquat-336 (methyltrioctylammonium chloride) extractant dissolved in kerosene containing 10% n-octanol as phase modifier. The different parameters affecting the extraction process including acid, alkali, extractant, metal concentrations, phase ratio and loading capacity as well as the temperature were separately investigated. Vanadium(V) species were suggested to be (H2V10O28)(4-) and (VO3OH)(2-) in acidic and alkaline solutions, respectively. Based on the obtained results, the extraction equilibria were deduced and the optimum conditions for the extraction of vanadium were proposed. The method was applied for treatment of the spent catalyst used in the manufacture of sulphuric acid industry giving a recovery of 93.0% for vanadium in the whole process. (C) 2009 Elsevier B.V. All rights reserved.