Ekstraksi Tembaga secara Elektrolitik Menggunakan Campuran Padatan CuFeS2 dan CaCO3 (Chalcopyca) sebagai Anoda
ABSTRACT: Study on a new road
of copper electroextraction to make use the solid mixture of CuFeS2 and CaCO3
as anode has been done. The aim of these research was to determine reaction
kinetic and faradic efficiency of anodic copper dissolution and catodic copper
precipitation. A solid mixture of CuFeS2 and CaCO3 at weight ratio 9:1 was
functioned as anode. Electrolysis was carried out at 1.5 mA by varying times of
30,60,120, and 240 minutes in Na2SO4 0.5 M + H2SO4 0.01 M electrolyte. The
quantity of copper at the electrolyte and cathode was analyzed by Atomic
Absorption Spectrophotometer (AAS). The result of these research showed that
copper was deposited in the cathode simultaneously with anodic dissolution. The
kinetic of copper dissolution follow zero order with rate constant of 5.10-6
mg/second. The faradic efficiency of copper dissolution and precipitation for
those various time respectively were 17.31%; 14.00%; 11,16%; 62.31%; and 1.60%;
8.61%; 7.59%; 60.63%.
Penulis: Agus Kuncaka, Eko
Sugiharto, Yasinta Endah Nastiti
Kode Jurnal: jpkimiadd050050
