Carrier mediated transport of Pd(II) from nitric acid medium using Dithiodiglycolamide(DTDGA) across a supported liquid membrane (SLM)
Carrier mediated transport of Pd(II) from nitric acid medium using Dithiodiglycolamide(DTDGA) across a supported liquid membrane (SLM)
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DOI：
10.1016/j.memsci.2013.07.045
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发表时间：
2014-01-01
影响因子：
9.5
通讯作者：
Hubli, R. C.
中科院分区：
文献类型：
--
作者：
Panja, S.;Ruhela, R.;Hubli, R. C.
以N，N，N，N '-四（2-乙基己基）二硫代二甘醇酰胺（DTDGA）为载体，研究了Pd（II）在支撑液膜中的迁移行为.几乎定量运输的Pd（II），观察到在类似的2小时的时间间隔，使用0.025 M DTDGA在正十二烷作为载体，从4.0 M HNO 3进料溶液与0.01 M硫脲在0.2 M HNO 3作为剥离剂。在这段时间间隔内，几乎可以忽略不计的其他裂变产物的运输存在于高放废物（HLW）的解决方案进行了观察。优化各种参数以实现最大转运速率，实验结果表明，以0.025 M DTDGA为载体，保持料液酸度为4 M HNO 3，以0.2 μ m PTFE为膜支撑体时，渗透系数最高，为2.37 × 10（-3）cm/s。发现该膜在六个操作循环中是稳定的。(C)© 2013 Elsevier B. V.版权所有
A novel ligand, 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) from nitric acid medium. Almost quantitative transport of Pd(II) was observed in similar to 2 h time interval using 0.025 M DTDGA in n-dodecane as carrier from 4.0 M HNO3 feed solution with 0.01 M thiourea in 0.2 M HNO3 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., teed acidity, DTDGA concentration in membrane phase, membrane porosity etc. Highest permeability co-efficient value of 2.37 x 10(-3) cm/s was observed for 0.025 M DTDGA as carrier keeping the feed acidity at 4 M HNO3 and using 0.2 mu m PTFE as membrane support. The membrane was found to be stable over six cycles of operation. (C) 2013 Elsevier B.V. All rights reserved