Stripping dispersion hollow fiber liquid membrane containing PC-88A as carrier and HCl for transport behavior of trivalent dysprosium

Pei, Liang; Wang, Liming; Guo, Wei; Zhao, Nan

doi:10.1016/j.memsci.2011.05.037

Cited by 29 publications

(13 citation statements)

References 18 publications

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“…Among various methods, liquid membrane-based techniques are of great importance which have been widely used for metal extraction from aqueous solutions and purification of REE enrichments because of their advantages over other methods such as liquidliquid extraction [9,10]. The alternative liquid membrane enables non-equilibrium mass transfer and simultaneous extraction and stripping in one step for very low to high solute concentrations [11,12]. The main types of liquid membrane configurations are bulk liquid membrane (BLM), supported liquid membrane (SLM), and emulsion liquid membrane (ELM) systems [13].…”

Section: Introductionmentioning

confidence: 99%

Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi‐Walled Carbon Nanotubes

et al. 2018

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A new emulsion liquid membrane was prepared for dysprosium (Dy) extraction from aqueous solution using multi-walled carbon nanotubes (MWCNTs). The influence of MWCNT concentration, carrier and surfactant concentration, stirring speed, feed-phase pH, and internal phase concentration and their interactive effects were studied. A regression model for Dy extraction was developed and the parameters were optimized by response surface methodology. The extent of extraction increases with higher MWCNT concentration up to a certain level. The Dy extraction through the liquid membrane containing MWCNT improves with time. Moreover, the overall mass transfer coefficient was enhanced in the presence of MWCNT due to the formation of a more stable emulsion and liquid membrane.

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Section: Introductionmentioning

confidence: 99%

Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi‐Walled Carbon Nanotubes

et al. 2018

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“…Similar results were found when the enriched section flowed through the tube side. In later experiments, the initial stabilization time is set to more than 30 min to obtain more reliable results [ 17 , 18 ].…”

Section: Methodsmentioning

confidence: 99%

Application Effect of MF-OP on Collection of Trivalent Holmium from Rare Earth Mining Wastewater

Liang

Sun

2023

IJERPH

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Microtube microfilter with organic phosphoric acid (expressed as MF-OP) containing a wastewater portion with buffer fluid and an enriched portion with nitric acid fluid and organic phosphoric extractant dissolved in benzin has been studied for its trivalent holmium (expressed as Ho(III) collection from rare earth wastewater. Common parameters affecting the collection effect have been investigated, including hydrogen ion molar concentration (molar concentration can be expressed as Cm) or pH value, initial concentration (expressed as Co) of Ho(III), ion-force of rare earth wastewater, voluminal proportion of organic phosphoric extractant with benzin and nitric acid fluid (expressed as Vr), nitric acid Cm, extractant Cm, and type of acid fluid in an enriched portion. The virtues of MF-OP compared to the traditional collection was explored. The impacts of hydrodynamic characteristics (steadiness and current speed) and MF parameter factors (inradius of tube, tube–shell thickness, proportion of holes) on the collection performance of MF-OP for Ho(III) collection were also considered. The test results displayed that the greatest collection conditions of Ho(III) were attained as nitric acid Cm was 4.00 mol/L, extractant Cm was 0.220 mol/L, and Vr was 0.8 in the enriched portion, and pH value was 4.60 in the wastewater portion. Ion- force of rare earth wastewater had no noticeable outcome on Ho(III) collection. The collection proportion of Ho(III) was attainable to 93.1% in 280 min, while Co was 1.80 × 10−3 mol/L.

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“…The demand for rare earth metals (REMs) has been steadily increasing due to their unique physical and chemical characteristics and extensive usage in various life sectors, e.g., adding a small amount of REMs to steel can improve its heat, corrosion and oxidation resistance. 1 Scandium is a REM, which has an essential role in many application areas such as aluminium alloys, semiconductors and fuel-cells. 2 The price of scandium is considerable and it is produced mainly as a by-product, therefore, there is an urgent need for the development of dedicated and efficient separation techniques to sustain the growing demand for this metal.…”

Section: Introductionmentioning

confidence: 99%

A polymer inclusion membrane composed of the binary carrier PC-88A and Versatic 10 for the selective separation and recovery of Sc

et al. 2018

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Stripping dispersion hollow fiber liquid membrane containing PC-88A as carrier and HCl for transport behavior of trivalent dysprosium

Cited by 29 publications

References 18 publications

Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi‐Walled Carbon Nanotubes

Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi‐Walled Carbon Nanotubes

Application Effect of MF-OP on Collection of Trivalent Holmium from Rare Earth Mining Wastewater

A polymer inclusion membrane composed of the binary carrier PC-88A and Versatic 10 for the selective separation and recovery of Sc

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