Experimental study of lithium solvent extraction in a T-shaped microchannel

IF 2.3 4区工程技术 Q3 CHEMISTRY, MULTIDISCIPLINARY

Separation Science and Technology Pub Date : 2023-06-25 DOI:10.1080/01496395.2023.2229009

Kosar Hasanpoursorkhdehi, Elham OmidbakhshAmiri

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引用次数: 1

Abstract

ABSTRACT The extraction of lithium from the waste of used batteries is going to be necessary due to the limited resources of lithium. One of the most common methods to extract is liquid–liquid extraction with an organic solvent. In this study, Bis(2-ethylhexyl) phosphoric acid (D2EHPA) solvent is used for liquid–liquid extraction of lithium-ion in a T-shaped microchannel. Lithium chloride solution has been used as a dispersed phase and, D2EHPA solvent with sunflower oil has been unitized as a continuous phase. The effect of some parameters, such as the flow rate of the continuous phase and the amount of the consumed solvent on the time of slug formation process, slug length and, extraction percentage has been investigated. Results showed that the time of the slug formation decreases by increasing the flow rate of the continuous phase. Also, it found that with increasing the pH of the aqueous phase by 36% resulted in a 15% reduction in the length of the slug. With an increase of 67% of the consumed solvent, the slug length increases by about 16%. By increasing the amount of the consumed solvent, the slug length increases. In continuation, with increasing the slug length, extraction percentage increases.

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t型微通道中锂溶剂萃取的实验研究

摘要由于锂资源的有限性，从废旧电池废料中提取锂势在必行。最常用的提取方法之一是用有机溶剂进行液-液萃取。本研究采用双(2-乙基己基)磷酸(D2EHPA)溶剂在t型微通道中液液萃取锂离子。采用氯化锂溶液作为分散相，将D2EHPA溶剂与葵花籽油统一为连续相。考察了连续相流速和溶剂用量等参数对段塞形成时间、段塞长度和萃取率的影响。结果表明，增大连续相的流量可以缩短段塞的形成时间。研究还发现，当水相的pH值增加36%时，段塞的长度会减少15%。随着溶剂用量增加67%，段塞长度增加约16%。通过增加消耗溶剂的量，段塞长度增加。随着段塞长度的增加，萃取率也随之增加。

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来源期刊

Separation Science and Technology 工程技术-工程：化工

CiteScore

6.10

自引率

3.60%

发文量

131

审稿时长

5.7 months

期刊介绍： This international journal deals with fundamental and applied aspects of separation processes related to a number of fields. A wide range of topics are covered in the journal including adsorption, membranes, extraction, distillation, absorption, centrifugation, crystallization, precipitation, reactive separations, hybrid processes, continuous separations, carbon capture, flocculation and magnetic separations. The journal focuses on state of the art preparative separations and theoretical contributions to the field of separation science. Applications include environmental, energy, water, and biotechnology. The journal does not publish analytical separation papers unless they contain new fundamental contributions to the field of separation science.