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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.12 [2005] >
IJCT Vol.12(6) [November 2005] >
| Title: | Studies on extraction of chromium(VI) from acidic solution by emulsion liquid membrane |
| Authors: | Chakraborty, Sekhar
Datta, Siddhartha
Bhattacharya, Pinaki |
| Keywords: | mulsion liquid membrane
alamine-336
simultaneous extraction and stripping, equilibrium concentration
ELM |
| Issue Date: | Nov-2005 |
| Publisher: | CSIR |
| IPC Code: | C22B3/06; C22B34/32 |
| Abstract: | High molecular
weight amines, quaternary salts etc. have the potential of removing heavy metal
ions including the toxic ones at low concentrations. In the present work an
attempt has been made to extract Cr(VI) through emulsion liquid surfactant
membrane (or, emulsion liquid membrane-ELM) from it’s acidic solution using alamine-336
and caustic soda as extractant and striping reagents respectively. Around 97%
extraction of Cr(VI) from aqueous solutions of potassium dichromate through
batch experimentations have been achieved. Being crucial to the overall success
of the ELM processes, experiments on emulsion stability have also been
performed to arrive at a reasonably stable emulsion composition. Effect of
various process parameters such as initial solute concentration, concentration
of internal phase etc. as also that of pH on extraction of chromium have been
investigated. |
| Page(s): | 713-718 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.12(6) [November 2005]
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