Extraction of cadmium(Ⅱ) from aqueous solutions by DIOSO

LI Xueling; LIU Xingyuan; ZHAO Feng; ZHANG Jianqiang

doi:10.11949/j.issn.0438-1157.20180752

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Extraction of cadmium(Ⅱ) from aqueous solutions by DIOSO

Separation engineering | 更新时间：2026-07-24

- Extraction of cadmium(Ⅱ) from aqueous solutions by DIOSO
- CIESC Journal Vol. 70, Issue 4, Pages: 1464-1471(2019)
- 作者机构：
  
  1.普洱学院生物与化学学院，云南普洱 665000
  2.云南省高校亚热带药用食用生物资源开发与利用重点实验室，云南普洱 665000
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180752
  CLC： O 661.1;X 75
- Received：05 July 2018，
  
  Revised：2019-01-15，
  
  Online First：15 June 2020，
  
  Published：12 April 2019
- 稿件说明：
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李学玲, 刘兴元, 赵锋, 张建强. 用DIOSO从水溶液中萃取镉的研究[J]. 化工学报, 2019, 70(4): 1464-1471

LI Xueling, LIU Xingyuan, ZHAO Feng, ZHANG Jianqiang. Extraction of cadmium(Ⅱ) from aqueous solutions by DIOSO[J]. CIESC Journal, 2019, 70(4): 1464-1471
李学玲, 刘兴元, 赵锋, 张建强. 用DIOSO从水溶液中萃取镉的研究[J]. 化工学报, 2019, 70(4): 1464-1471 DOI： 10.11949/j.issn.0438-1157.20180752.

LI Xueling, LIU Xingyuan, ZHAO Feng, ZHANG Jianqiang. Extraction of cadmium(Ⅱ) from aqueous solutions by DIOSO[J]. CIESC Journal, 2019, 70(4): 1464-1471 DOI： 10.11949/j.issn.0438-1157.20180752.

摘要

为探究亚砜类化合物对水中重金属镉的萃取效率和萃取机理，报道了利用二异辛基亚砜(DIOSO)萃取水溶液中镉的情况，实验制备了DIOSO，以其为萃取剂探索其对水溶液中镉的萃取情况，得出最佳萃取条件，在此条件下最高萃取率为99.7%。为达到萃取剂的回收循环利用，实验研究了不同反萃剂对Cd(Ⅱ)的反萃情况，得出利用0.2 mol/L NaOH为反萃剂时能把有机相中的Cd(Ⅱ)全部洗脱出来，反萃率达99.86%。在此基础上，结合光谱和热力学分析，DIOSO对Cd(Ⅱ)的萃取过程可能是离子间发生了缔合作用。DIOSO对水中Cd(Ⅱ)的成功萃取，可以为工业废水污染中Cd(Ⅱ)的处理提供重要理论研究基础。

Abstract

To investigate the extraction efficiency and extraction mechanism of sulfoxide compounds in heavy metal cadmium in water

the extraction of cadmium in aqueous solution by diisooctyl sulfoxide (DIOSO) was reported. DIOSO was prepared and used as an extractant to explore its aqueous solution. Under this condition

a maximum extraction percentage was 99.7 %. To the recycling of extractant

we also carried out cadmium stripping experiments with different stripping agents

the results demonstrated that nearly all of the Cd(Ⅱ) ( 99.86%) in the organic phase could be reverse extracted into the aqueous phase when the NaOH concentration reached 0.2 mol/L. On this basis

combining spectrum and thermodynamic analysis

the extraction process of Cd (Ⅱ) from aqueous solutions by DIOSO may be happened between ion associations. Successfully extracted of Cd(Ⅱ) by DIOSO could provide important theoretical research foundation to heavy metals Cd(Ⅱ) in industrial wastewater pollution.

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