Laboratory and pilot plant test of yttrium recovery from wastewater by electrostatic pseudo liquid membrane

Gu, Zhongmao; Wu, Quanfeng; Zheng, Zhenjia; Li, Zianqun; Jiang, Yalong; Tang, Chuanjie; Lin, Pigguang

doi:10.1016/0376-7388(94)80002-2

Cited by 29 publications

(7 citation statements)

References 1 publication

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“…A relatively new variation on liquid membranes is the so-called electrostatic pseudo liquid membrane (ESPLIM) developed in China by Gu et al (22,86,87). The process is a combination of an electrostatic technique with the principle of a liquid membrane.…”

Section: New Liquid Membrane Configurationsmentioning

confidence: 99%

Stability of Supported Liquid Membranes: State of the Art

Kemperman

Bargeman

Boomgaard

et al. 1996

Separation Science and Technology

302

134

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Section: New Liquid Membrane Configurationsmentioning

confidence: 99%

Stability of Supported Liquid Membranes: State of the Art

Kemperman

Bargeman

Boomgaard

et al. 1996

Separation Science and Technology

302

134

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“…Different types of liquid membrane systems such as emulsion liquid membrane (ELM) 8 , bulk liquid membrane (BLM) 9 , hollow fiber supported liquid membrane (HFSLM) 10 , flowing liquid membrane (FLM) 11 , electrostatic pseudo-liquid membrane (EPLM) 12 and supported emulsion liquid membrane (SELM) 13 have been proposed. However, the poor stability and difficult operations have constrained their large-scale industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Yttrium (III) Recovery with D2EHPA in Pseudo-Emulsion Hollow Fiber Strip Dispersion System

Pirom

Arponwichanop

Pancharoen

et al. 2018

Sci Rep

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Yttrium (Y) is an essential lanthanide rare earth element and can be effectively extracted and purified using a hollow fiber supported liquid membrane (HFSLM) system. However, the stability of HFSLM system is a significant challenge. Pseudoemulsion-hollow fiber strip dispersion (PEHFSD) system, providing excellent stability, is attracting research attention. In this work, the recovery of Y(III) by PEHFSD system using di(2-ethylhexyl)phosphoric acid (D2EHPA) as a carrier was investigated. The effects of several operating parameters, including the initial concentration of Y(III) in the feed phase, the flow rate of feed, the stirring speed and the volumetric ratio of feed to strip on Y(III) separation were studied. The Y(III) transport was analyzed on the concentration ratio of Y(III) ions, percent extraction, percent stripping and overall mass transfer coefficient (Kp). The PEHFSD system outperformed HFSLM system regarding separation performance and stability. Kp of HFSLM system decreased after the second run, but Kp of PEHFSD system remained constant even at the fifth run. The dispersed droplets in the strip dispersion phase in the PEHFSD system enhanced separation performance and stability of the membrane module.

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“…LM technology can carry out extraction and stripping process simultaneously and have benefit of non equilibrium mass transfer and uphill effect where solute can be moved from low to high concentrated solution (Franken, 1997;Gu et al, 1994;Giaikwad, 2004). The main types of liquid membrane systems include Emulsion Liquid Membrane (ELM) (Li et al, 1997), Supported Liquid Membrane (SLM) (Bloch et al, 1967), Bulk Liquid Membrane (BLM), Flowing Liquid Membrane (FLM) (Teramoto et al, 1989), Supported Emulsion Liquid Membrane (SELM) (Fouad et al, 2008;Sonawane et al, 2007), Hollow Fibre Contained Liquid Membrane (HFCLM) (Gabelman et al, 1999) and Supported Liquid Membrane with Stripping Dispersion (SLMSD) (Basualto et al, 2003;Gu et al, 2006) etc.…”

Section: Introductionmentioning

confidence: 99%

Uptake of Palladium Using Liquid Emulsion Membrane Technique

Kumar¹,

Mishra²,

Seshadri³

2014

IJC

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The waste stream generated at the reprocessing facility (first cycle raffinate-Hi level waste) contains Palladium as one of the fission products. The recovery of Palladium from the waste stream reduces the activity burden and lends its use for catalytic applications. This paper deals with its recovery from the waste stream generated at various stages of nuclear fuel cycle using liquid emulsion membrane technique. Complexants chosen were based on the chelating ability with metal ions with high stability constant in the waste stream. Complexants 8-hydroxy quinoline, Thio salicylic acid, dithiazone, cupferron, 1-Niroso-2-naphthol, Quinalizarin were chosen as complexants. The effect of surfactant concentration, complexant concentration, agitating speed, and emulsifcation time on the emulsion stability have been studied. Treat ratio, the ratio of the emulsion phase to the external phase and the impeller speed on the removal of Palladium have been studied. Results show that stable emulsion could be prepared by using 1.5 ml of surfactant span 80 in 50 ml emulsion, with impeller speed 3000 RPM, for duration of 20 minutes using complexants of strength of 70-200 moles/m 3. Effective recovery of Pd could be achieved by using strippant of pH 1-3.7 in the emulsion phase at 250-300 RPM of impeller speed.

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Laboratory and pilot plant test of yttrium recovery from wastewater by electrostatic pseudo liquid membrane

Cited by 29 publications

References 1 publication

Stability of Supported Liquid Membranes: State of the Art

Stability of Supported Liquid Membranes: State of the Art

Yttrium (III) Recovery with D2EHPA in Pseudo-Emulsion Hollow Fiber Strip Dispersion System

Uptake of Palladium Using Liquid Emulsion Membrane Technique

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