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首页> 外文期刊>Journal of Hazardous Materials >Analysis of continuous solvent extraction of nickel from spent electroless nickel plating baths by a mixer-settler
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Analysis of continuous solvent extraction of nickel from spent electroless nickel plating baths by a mixer-settler

机译：混合沉降器分析从废化学镀镍浴中连续萃取镍的溶剂

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摘要

It is urgent to develop an effective technique to treat the large amount of spent electroless nickel plating bath and recycle the high concentration nickel. In our previous study, high recycling efficiency of nickel from the model spent bath was obtained by continuous solvent extraction with 2-hydroxy-5-nonylacetophenone oxime (LIX841) as the extractant and 2-ethylhexylphosphonicacid mono-2-ethylhexyl ester (PC88A) as the accelerator using a mixer-settler extractor. It was observed that the extraction efficiency was affected by the operation parameters such as the flow rates of the aqueous and organic phases and the total stage number. In the present study, the effects of the operation parameters on the extraction efficiency were quantitatively studied on the basis of the pseudo-first-order interfacial extraction rate equation together with the hydrodynamic properties in the mixer. The organic phase holdup, measured under varying conditions of the flow rates of both phases, was analyzed by the Takahashi-Takeuchi holdup model in order to estimate the specific interfacial area. The overall extraction rate coefficients defined by the product of the interfacial extraction rate constant and the specific interfacial area were evaluated using the experimental data and ranged from 3.5 × 10~(-3) to 6.7 × 10~(-3) s~(-1), which was close to the value of 3.4 × 10~(-3) s~(-1) obtained by batch extraction. Finally, an engineering simulation method was established for assessing the extraction efficiency of nickel during a multistage operation.
机译：迫切需要开发一种有效的技术来处理大量的废化学镀镍浴并回收高浓度的镍。在我们先前的研究中，通过用2-羟基-5-壬基苯乙酮肟（LIX841）作为萃取剂和2-乙基己基膦酸单-2-乙基己酯（PC88A）作为连续溶剂萃取，可从模型废液中获得较高的镍回收利用率。使用混合沉降器提取器进行加速。观察到萃取效率受到操作参数的影响，例如水相和有机相的流速以及总级数。在本研究中，基于拟一阶界面萃取速率方程以及混合器中的流体力学特性，定量研究了操作参数对萃取效率的影响。高桥-Takeuchi滞留模型分析了在两相流速变化的条件下测得的有机相滞留量，以估算特定的界面面积。使用实验数据评估由界面萃取速率常数和特定界面面积乘积确定的整体萃取速率系数，范围为3.5×10〜（-3）到6.7×10〜（-3）s〜（- 1），接近于通过批量提取获得的3.4×10〜（-3）s〜（-1）的值。最后，建立了一种工程模拟方法，用于评估多级操作过程中镍的萃取效率。

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  • 来源
    《Journal of Hazardous Materials》 |2009年第3期|1228-1235|共8页
  • 作者

    Ying Huang; Mikiya Tanaka;

  • 作者单位

    Metals Recycling Croup, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan;

    Metals Recycling Croup, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electroless nickel plating bath; solvent extraction; mixer-settler; simulation;

    机译：化学镀镍浴;溶剂萃取;混合沉降器模拟;

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