Hollow fiber supported liquid membrane: a novel technique for separation and recovery of plutonium from aqueous acidic wastes

Rathore, N.S.; Sonawane, J. V.; Kumar, Anil; Venugopalan, A.; Singh, Rajvir; Bajpai, Divya; Shukla, J. P.

doi:10.1016/s0376-7388(01)00406-9

Cited by 84 publications

(26 citation statements)

References 12 publications

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“…For this reason, the separation of metal ions from solution is of great interest in hydrometallurgical processes for recovering the metal values, as well as abating the environmental pollution problems. This separation can be achieved by liquid membrane systems that have been widely applied to the extraction and recovery of metal ions from solutions [9,10]. The simultaneous extraction and stripping operation is very efficient because metal ions can move from low to high concentration solutions.…”

Section: Introductionmentioning

confidence: 99%

Performance of hollow fiber supported liquid membrane on the extraction of mercury(II) ions

Uedee

Ramakul

Pancharoen

et al. 2008

Korean J. Chem. Eng.

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The extraction and recovery or stripping of mercury ions from chloride media using microporous hydrophobic hollow fiber supported liquid membranes (HFSLM) has been studied. Tri-n-octylamine (TOA) dissolved in kerosene was used as an extractant. Sodium hydroxide was used as a stripping solution. The transport system was studied as a function of several variables: the concentration of hydrochloric acid in the feed solution, the concentration of TOA in the liquid membrane, the concentration of sodium hydroxide in the stripping solution, the concentration of mercury ions in the feed solution and the flow rates of both feed and stripping solutions. The results indicated that the maximum percentages of the extraction and recovery of mercury ions of 100% and 97% were achieved at the concentration of hydrochloric acid in the feed solution of 0.1 mol/l, the concentration of TOA at 3% v/v, the concentration of sodium hydroxide at 0.5 mol/l and the flow rates of the feed and stripping solutions of 100 ml/min. However, the concentration of mercury ions from 1-100 ppm in the feed solution had no effect on the percentages of extraction and recovery of mercury ions. Thus, these results have identified that the hollow fiber supported liquid membrane process has high efficiency on both the extraction and recovery of mercury (II) ions. Moreover, the mass transfer coefficients of the aqueous phase (k i ) and membrane or organic phase (k m ) were calculated. The mass transfer coefficients of the aqueous phase and organic phase are 0.42 and 1.67 cm/s, respectively. The mass transfer coefficient of the organic phase is higher than that of the aqueous phase. Therefore, the mass transfer controlling step is the diffusion of the mercury ions through the film layer between the feed solution and the liquid membrane.

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Section: Introductionmentioning

confidence: 99%

Performance of hollow fiber supported liquid membrane on the extraction of mercury(II) ions

Uedee

Ramakul

Pancharoen

et al. 2008

Korean J. Chem. Eng.

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“…To determine the overall mass transfer coefficient for the diffusion of the target species through HFSLM, the relationship between the overall mass transfer coefficient and the permeability coefficient is deployed. The permeability coefficient is reciprocal to the mass transfer coefficients as follows (Urtiaga et al, 1992;Kumar et al, 2000;Rathore et al, 2001) ii il m mo s 11 r1r 1 Pk rP r k  …”

Section: Mass Transfer Across Hfslmmentioning

confidence: 99%

Roles of Facilitated Transport Through HFSLM in Engineering Applications

Lothongkum¹,

Pancharoen²,

Prapasawat³

2011

Mass Transfer in Chemical Engineering Processes

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“…To determine the mass transfer coefficient for arsenic/mercury ions diffusion through HFSLM, the relationship between the mass transfer coefficient and permeability coefficient (P) is deployed. The permeability coefficient depends on mass transfer resistances and is reciprocal to the mass transfer coefficients as follows (Rathore et al, 2001). Three mass transfer resistances in Equation (7) are in accordance with three steps of the transport mechanisms: first the resistance when arsenic/mercury ions diffuse across the feed interface; second the resistance when complex ions of arsenic/mercury diffuse across liquid membrane; and third the diffusion resistance across the stripping interface.…”

Section: Mass Transfer Mechanism In Hfslmmentioning

confidence: 99%

Mass Transfer in Hollow Fiber Supported Liquid Membrane for As and Hg Removal from Produced Water in Upstream Petroleum Operation in the Gulf of Thailand

Pancharoen¹,

Lothongkum²,

Chaturabul³

2011

Mass Transfer in Multiphase Systems and Its Applications

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Hollow fiber supported liquid membrane: a novel technique for separation and recovery of plutonium from aqueous acidic wastes

Cited by 84 publications

References 12 publications

Performance of hollow fiber supported liquid membrane on the extraction of mercury(II) ions

Performance of hollow fiber supported liquid membrane on the extraction of mercury(II) ions

Roles of Facilitated Transport Through HFSLM in Engineering Applications

Mass Transfer in Hollow Fiber Supported Liquid Membrane for As and Hg Removal from Produced Water in Upstream Petroleum Operation in the Gulf of Thailand

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