posted on 2007-10-15, 00:00authored byHong Wang, J Ding, B Lee, Xungai Wang, Tong Lin
In this paper, for the first time, polypyrrole-coated electrospun nanofibre mats have been used as separation membranes to electrolessly recover Au from aqueous [Au(III)Cl4]− solutions, based on a continuous-flow membrane separation process. With a [Au(III)Cl4]− solution passing through the nanofibre membrane, the Au(III) ions were converted into elemental Au. The gold recovered was deposited on the nanofibre membranes in the form of Au particles, as confirmed by EDX and XPS measurements. It has been found that the polypyrrole-coated electrospun nanofibres are good candidate membrane material for the recovery of Au, and the recovery efficiency is affected by the membrane thickness, the permeate flux rate and the initial [Au(III)Cl4]− concentration.
History
Journal
Journal of membrane science
Volume
303
Pagination
119 - 125
Location
Amsterdam, The Netherlands
Open access
Yes
ISSN
0376-7388
eISSN
1873-3123
Language
eng
Notes
Reproduced with the specific permission of the copyright owner.
Publication classification
C1 Refereed article in a scholarly journal; C Journal article