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Research Article
ScienceAsia 28 (2002) :153-159 |doi: 10.2306/scienceasia1513-1874.2002.28.153
Recovering of Copper from
Synthetic Solution in 3PE Reactor
Mali Hunsoma, *a,*, Hugues Vergnesb, Patrick Duverneuilb, Kejvalee Pruksathorna and Somsak Damronglerda
ABSTRACT: Recovery of copper from a synthetic solution with an initial copper concentration 1 g/l, pH 1 was investigated in a Pulsed Porous Percolated Electrode reactor (3PE). This reactor was constructed in the axial field configuration with 0.2 m diameter and 0.35 m height. Graphite particles were used as a voluminal cathode and a counter electrode made of titanium coated with ruthenium oxide was placed 0.04 - 0.05 m above the upper level of carbon particles. The optimum current intensity was obtained at 9 A at which more than 90 % of copper was recovered in 4 hours. Due to a current intensity drop during the destabilization of the granular bed, the recovery rate of copper decreased when the pulse frequency increased. In addition, a reasonable operating cost was obtained at about 14.87 FF/m3 (1.97 US$/m3) at optimum current. A dimensionless number, which shows the relationship between the mass transfer coefficient and flow rate of the electrolyte, was defined.
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a Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
b INPT1 ,ENSIACET2, 18 Chemin de la Loge, 31078 Toulouse Cedex, France.
1 Institute National Polytechnique de Toulouse, Place des Hauts-Murats, 31006,
Toulouse cedex, France.
2 Ecole Nationale Superieure des ingenieurs en Arts Chimiques et Technologies,
Chemin de la Loge, 31078 Toulouse, France.
* Corresponding author, E-mail: p4173817723@hotmail.com
Received 8 Jun 2001, Accepted 2 Nov 2001
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