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Author(s) |
Panja, S.; Ruhela, R.; Das, A.; Tripathi, S. C.; Singh, A. K.; Gandhi, P. M.; Hubli, R. C. (FRD;MPD)
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Source |
Journal of Membrane Science, 2014. Vol. 449: pp. 67-73 |
ABSTRACT
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A novelligand,namely, N,N,N′,N′-tetra-(2-ethylhexyl)dithiodiglycolamide(DTDGA) has been explored as a carrier across a supported liquid membrane (SLM) to study the transport behavior of Pd (II) fromnitric acid medium. Almost quantitative transport of Pd(II) was observed in ~2 h time interval using 0.025M DTDGA in n-dodecane as carrier from 4.0 MHNO3 feed solution with 0.01 M thiourea in 0.2 MHNO3 as strippant. During this time interval almost negligible transport of other fission products present in high level waste (HLW) solution was observed.Various parameters were optimized to achieve maximum transport rate viz., feed acidity, DTDGA concentration in membrane phase, membrane porosity etc. Highest permeability co-efficient value of 2.37x 10-3 cm/s was observed for 0.025 M DTDGA as carrier keeping the feed acidity at 4MHNO3 and using 0.2 μm PTFE as membrane support. The membrane was found to best able over six cycles of operation. |
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