Microextraction of lanthanum using a rotating microchannel extractor

This work introduced a novel microchannel extractor. The extraction system was to extract lanthanum nitrate aqueous solution with 2-ethylhexyl phosphoric acid-2-ethylhexyl ester (EHEHPA). Different feeding methods and inner rotors were explored first. The results showed that parallel feeding and inner rotors engraved with spiral stripes were more favorable for extraction. Next, the effect of various factors on the extraction was explored, including the pH of the aqueous phase, rotational inner rotor speed (R) and the fluid volumetric flow rate (Q). The results showed that these factors are closely related to the extraction. Finally, the experiment was verified by CFD numerical simulation, the simulation result was consistent with the experiment. In this device, active mixing was introduced into the microchannel extraction, which significantly improved the extraction efficiency. Under certain conditions, the extraction efficiency of this device exceeded stirring extraction equilibrium. Moreover, the extraction in this device is faster than conventional stirring extraction. These advantages provide a possibility for highly efficient extraction and use of rare earth elements.

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Efficient extraction and enrichment of rare earth from diluent aqueous solution by organic hollow sphere

Chemical Engineering Research and Design ◽

10.1016/j.cherd.2018.01.001 ◽

2018 ◽

Vol 132 ◽

pp. 19-27 ◽

Cited By ~ 1

Author(s):

Chuanxu Xiao ◽

Kun Huang ◽

Wenjuan Cao ◽

Tingting Dong ◽

Min Li ◽

...

Keyword(s):

Aqueous Solution ◽

Rare Earth ◽

Hollow Sphere ◽

Efficient Extraction

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Optimization and Preparation of Superadsorbent Fe3O4-Coated Carbon Black Paramagnetic Nanocomposite for Separation of Light Rare Earth Elements (Ce, La and Nd) from Aqueous Solution and Mechanism Interpretation by Using GMDH-Based Neural Network and Sensitivity Analysis

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2021.125655 ◽

2021 ◽

pp. 125655

Author(s):

Hadi Abdollahi ◽

Soudabeh Maleki ◽

Hani Sayahi ◽

Mahdi Gharabaghi ◽

Mohammad Hossein Karimi Darvanjooghi ◽

...

Keyword(s):

Neural Network ◽

Aqueous Solution ◽

Sensitivity Analysis ◽

Rare Earth ◽

Carbon Black ◽

Rare Earth Elements ◽

Light Rare Earth ◽

Coated Carbon ◽

Light Rare Earth Elements

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Self-assembly induced luminescence of Eu3+-complexes and application in bioimaging

National Science Review ◽

10.1093/nsr/nwab016 ◽

2021 ◽

Author(s):

Ping-Ru Su ◽

Tao Wang ◽

Pan-Pan Zhou ◽

Xiao-Xi Yang ◽

Xiao-Xia Feng ◽

...

Keyword(s):

Aqueous Solution ◽

Rare Earth ◽

Luminescence Intensity ◽

Self Assembly ◽

Room Temperature ◽

Molecular Motion ◽

Proof Of Concept ◽

Room Temperature Phosphorescence ◽

New Strategy ◽

Size Controlled

Abstract Design and engineering of highly efficient emitting materials with assembly-induced luminescence, such as room temperature phosphorescence (RTP) and aggregation-induced emission (AIE), have stimulated extensive efforts. Here, we propose a new strategy to obtain size-controlled Eu3+-complex nanoparticles (Eu-NPs) with self-assembly induced luminescence (SAIL) characteristics without encapsulation or hybridization. Compared with previous RTP or AIE materials, the SAIL phenomena of increased luminescence intensity and lifetime in aqueous solution for the proposed Eu-NPs are due to the combined effect of self-assembly in confining the molecular motion and shielding the water quenching. As a proof of concept, we also show that this system can be further applied in bioimaging, temperature measurement and HClO sensing. The SAIL activity of the rare-earth (RE) system proposed here offers a further step forward on the roadmap for the development of RE light conversion systems and their integration in bioimaging and therapy applications.

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Equilibrium, kinetic and mechanism studies on adsorption of textile disperse dye from aqueous solution onto TiO2 in the presence of ultrasound and rare earth ions

Materials Today Proceedings ◽

10.1016/j.matpr.2020.12.279 ◽

2021 ◽

Author(s):

Pankaj ◽

Richa Sharma ◽

Sudhir Kumar Verma

Keyword(s):

Aqueous Solution ◽

Rare Earth ◽

Rare Earth Ions ◽

Disperse Dye

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Thermodynamics of Complexation of Tetraalkylammonium and Rare-earth Cations with Two Sulfonatocalix[n]arenes (n=4 and 6) in Aqueous Solution

Supramolecular Chemistry ◽

10.1080/10610270500404249 ◽

2006 ◽

Vol 18 (3) ◽

pp. 183-190 ◽

Cited By ~ 2

Author(s):

Christine Bonal ◽

Patrice Malfreyt ◽

Jean-Pierre Morel ◽

Nicole Morel-Desrosiers

Keyword(s):

Aqueous Solution ◽

Rare Earth ◽

Thermodynamics Of Complexation

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Simultaneous Measuring Method for Both Volumetric Flow Rates of Air-Water Mixture Using a Turbine Flowmeter

Journal of Energy Resources Technology ◽

10.1115/1.2792689 ◽

1996 ◽

Vol 118 (1) ◽

pp. 29-35 ◽

Cited By ~ 9

Author(s):

K. Minemura ◽

K. Egashira ◽

K. Ihara ◽

H. Furuta ◽

K. Yamamoto

Keyword(s):

Pressure Drop ◽

Flow Rate ◽

Volumetric Flow Rate ◽

Oil Field ◽

Liquid Density ◽

Water Mixture ◽

Rotor Speed ◽

Flow Rates ◽

Field Development ◽

Turbine Flowmeter

A turbine flowmeter is employed in this study in connection with offshore oil field development, in order to measure simultaneously both the volumetric flow rates of air-water two-phase mixture. Though a conventional turbine flowmeter is generally used to measure the single-phase volumetric flow rate by obtaining the rotational rotor speed, the method proposed additionally reads the pressure drop across the meter. After the pressure drop and rotor speed measured are correlated as functions of the volumetric flow ratio of the air to the whole fluid and the total volumetric flow rate, both the flow rates are iteratively evaluated with the functions on the premise that the liquid density is known. The evaluated flow rates are confirmed to have adequate accuracy, and thus the applicability of the method to oil fields.

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Numerical Simulation of the Mass Transfer for Rare-Earth Concentrate in Leaching Process

Rare Metal Technology 2015 ◽

10.1007/978-3-319-48188-3_16 ◽

2015 ◽

pp. 135-144

Author(s):

Tingyao Liu ◽

Yong Sheng ◽

Teng Yang ◽

Bao Wang ◽

Lihui Han ◽

...

Keyword(s):

Numerical Simulation ◽

Mass Transfer ◽

Rare Earth ◽

Leaching Process

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Fabrication of hydrochar based on food waste (FWHTC) and its application in aqueous solution rare earth ions adsorptive removal: Process, mechanisms and disposal methodology

Journal of Cleaner Production ◽

10.1016/j.jclepro.2018.12.094 ◽

2019 ◽

Vol 212 ◽

pp. 1423-1433 ◽

Cited By ~ 13

Author(s):

Yanfang Feng ◽

Haijun Sun ◽

Lanfang Han ◽

Lihong Xue ◽

Yudong Chen ◽

...

Keyword(s):

Aqueous Solution ◽

Rare Earth ◽

Food Waste ◽

Rare Earth Ions ◽

Adsorptive Removal ◽

Removal Process

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Solvent Extraction And Spectrophotomteric Determination Of Cu(Ii) With Dicyclohexyl - 18- Crown-6

Baghdad Science Journal ◽

10.21123/bsj.10.3.997-1004 ◽

2013 ◽

Vol 10 (3) ◽

pp. 997-1004

Author(s):

Baghdad Science Journal

Keyword(s):

Aqueous Solution ◽

Solvent Extraction ◽

Correlation Coefficient ◽

Extraction Efficiency ◽

Molar Absorptivity ◽

Liquid Extraction ◽

Liquid Liquid Extraction ◽

Coloured Complex

Liquid-Liquid Extraction of Cu(II) ion in aqueous solution by dicyclohexyl-18-crown-6 as extractant in dichloroethane was studied .The extraction efficiency was investigated by a spectrophometric method. The reagent form a coloured complex which has been a quantitatively extracted at pH 6.3. The method obeys Beer`s law over range from (2.5-22.5) ppm with the correlation coefficient of 0.9989. The molar absorptivity the stoichiometry of extracted complex is found to be 1:2. the proposed method is very sensitive and selective.

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