Facilitated transport of Pd(II) through a supported liquid membrane (SLM) containing N,N,N′,N′-tetra-(2-ethylhexyl) thiodiglycolamide T(2EH)TDGA: A novel carrier

被引：29

作者：

Ruhela, R. ^{[1
]}

Panja, S. ^{[2
]}

Sharma, J. N. ^{[1
]}

Tomar, B. S. ^{[3
]}

Tripathi, S. C. ^{[2
]}

Hubli, R. C. ^{[1
]}

Suri, A. K. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Hydromet Sect, Mat Proc Div, Bombay 400085, Maharashtra, India

[2] Bhabha Atom Res Ctr, Fuel Reproc Div, Bombay 400085, Maharashtra, India

[3] Bhabha Atom Res Ctr, Radio Analyt Chem Div, Bombay 400085, Maharashtra, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2012年 / 229卷

关键词：

Pd(II); T(2EH)TDGA; Supported liquid membrane; Transport; Selectivity; VALUE FISSION PLATINOIDS; NITRIC-ACID; SOLVENT-EXTRACTION; MOBILE CARRIER; WASTE HLLW; RECOVERY; PALLADIUM; SEPARATION; AMERICIUM(III); TODGA;

D O I：

10.1016/j.jhazmat.2012.05.064

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A novel carrier, N,N,N',N'-tetra-(2-ethylhexyl) thiodiglycolamide, T(2EH)TDGA has been studied for transport of Pd(II) from nitric acid medium across a supported liquid membrane (SLM). Pd(II) was found to be almost quantitatively transported (similar to 99.9%) within 2h from 3.0 M HNO3 medium using 0.05 M T(2EH)TDGA in n-dodecane as carrier and 0.01 M thiourea in 0.2 M HNO3 as strippant. Pd(II) transport was also studied against various parameters like feed acidity, carrier concentration, membrane pore size, etc. Palladium transport was found to be diffusion controlled and the diffusion co-efficient value was found to be 3.56 x 10(-5) cm(2)/s. Selectivity of T(2EH)TDGA for palladium over other fission products was found to be quite high, with the separation factors for Pd, with respect to different fission products being >10(3). With respect to leaching out of carrier from the membrane support, the membrane was found to be stable for six consecutive cycles. Thus, T(2EH)TDGA can be used as an efficient carrier of Pd(II) from nitric acid medium. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：66 / 71

页数：6

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