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Updated: Jun 28, 2026

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter
Published on: July 13, 2018
The separation and isolation of gold by selective extraction and transport through a polyurethane ether-type membrane
Abstract:
The separation and isolation of gold(III) by selective extraction and transport through a ether-type polyurethane membrane was studied. Gold was found to be extracted into the membrane in strongly acidic solutions of HCl and HBr as the HAuBr(4) and HAuCl(4) complexes. Once extracted, the HAuCl(4) and HAuBr(4) complexes diffuse through the membrane and are recovered quantitatively in a receiving cell solution. This phenomenon was studied for the separation of a variety of binary metal solutions as well as for the separation of gold from a solution of gold ore. The preconcentration of gold was also achieved by adjusting the starting and receiving cell solution volumes.
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