Authors:
M. Ashraf Chaudry Pakistan Institute of Nuclear Science and Technology Islamabad Pakistan

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Noor-ul-Islam Pakistan Institute of Nuclear Science and Technology Islamabad Pakistan

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Niaz-ur-Rahman Pakistan Institute of Nuclear Science and Technology Islamabad Pakistan

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Abstract  

Membranes, based on tri-n-octylamine (TOA) xylene liquid, supported in hydrophobic microporous films have been used to study the transport of Pd(II) ions, after extraction into the membrane. Various parameters, such as the effect of hydrochloric acid concentration in the feed solution, TOA concentration in the membrane phase, effect of stripping agent like nitric acid concentration, and temperature on the flux of Pd(II) ions across the liquid membranes have been investigated. The optimum conditions of transport for these metal ions determined are, TOA concentration, 1.25 mol·dm–3, HCl concentration in the feed solution, 5 mol·dm–3, and concentration of nitric acid used as a stripping, agent 5 mol·dm–3. The maximum values of the flux and permeability determined under the optimum condition are 23·10–6 mol·m–2·s–1 and 2.40·103 m2·s–1 at 25°C. The results obtained have been used to elucidate the mechanism of palladium transport.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)