Extraction of La(III) by a nonionic microemulsion containing D2EHPA in hollow fiber contactor

IF 0.8 4区工程技术 Q4 ENGINEERING, CHEMICAL

Membrane Water Treatment Pub Date : 2021-03-01 DOI:10.12989/MWT.2021.12.2.075

H. Ou, Fuzhong Gong, Yanxia Tang, Yan Luo, Liheng Liu

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引用次数: 0

Abstract

This study aimed to prepare a W/O nonionic microemulsion system(MEs) consisting of OP-4[polyoxyethylene(4) nonylphenol], OP-7[polyoxyethylene(7) nonylphenol], 1-hexanol, D2EHPA, kerosene and HCl solution and applied to the extraction of La(III) from chloride aqueous solution within the polysulfone hollow fiber contactor (HFC),laboratory-scale experiments were carried out to investigate the recovery of La(III) using as-prepared microemulsion from the simulation wastewater containing La(III),Al(III) and Fe(III). The right weight ratio(Rs) of OP-4 to OP-7 was firstly confirmed through determination of the solubilization capacity of HCl solution(W0,HCl) in microemulsion, the effect of several factors such as the HCl concentration, temperature and effective extraction time on the extraction efficiency of La(III) was discussed. Results showed that the acceptable Rs was 4:6 to prepare the W/O MEs. The extraction yield of La(III) increased with the increasing of HCl concentration, temperature and effective extraction time and reaches to 97.3% while using five-stage modules. The recovery yield of La(III) from simulation La-bearing wastewater was 90.6%.

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含D2EHPA的非离子微乳液在中空纤维接触器中萃取La（III）

本研究旨在制备由OP-4[聚氧乙烯（4）壬基酚]、OP-7[聚氧乙烯（7）壬基苯酚]、1-己醇、D2EHPA、煤油和HCl溶液组成的W/O非离子微乳液体系（MEs），并将其应用于聚砜中空纤维接触器（HFC）内氯化物水溶液中La（III）的萃取，进行了实验室规模的实验，研究了用所制备的微乳液从含有La（III）、Al（III）和Fe（III）的模拟废水中回收La（III。通过测定盐酸溶液（W0，HCl）在微乳液中的增溶能力，首次确定了OP-4和OP-7的合适重量比，讨论了盐酸浓度、温度和有效萃取时间等因素对La（III）萃取效率的影响。结果表明，制备W/O ME的可接受Rs为4:6。La（III）的提取率随着HCl浓度、温度和有效提取时间的增加而增加，在使用五级模块时达到97.3%。模拟含La废水中La（III）的回收率为90.6%。

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来源期刊

Membrane Water Treatment ENGINEERING, CHEMICAL-WATER RESOURCES

CiteScore

1.90

自引率

30.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Membrane and Water Treatment(MWT), An International Journal, aims at opening an access to the valuable source of technical information and providing an excellent publication channel for the global community of researchers in Membrane and Water Treatment related area. Specific emphasis of the journal may include but not limited to; the engineering and scientific aspects of understanding the basic mechanisms and applying membranes for water and waste water treatment, such as transport phenomena, surface characteristics, fouling, scaling, desalination, membrane bioreactors, water reuse, and system optimization.