Open AccessPemurnian Emas dari Bijih Emas Berkadar Rendah Menggunakan Karbon Aktif dari Arang Tempurung Kelapa
Author(s) -
Ani Mulyasuryani,
Bambang Ismuyanto,
Danar Purwonugroho
Publication year - 2012
Publication title -
jurnal natur indonesia/jurnal natur indonesia
Language(s) - English
Resource type - Journals
eISSN - 2503-0345
pISSN - 1410-9379
DOI - 10.31258/jnat.14.1.1-6
Subject(s) - copper , adsorption , desorption , chemistry , activated carbon , nuclear chemistry , metallurgy , materials science , organic chemistry
The activated carbon from the coconut shell can be used as an adsorbent for the recovery of gold. The optimum condition for gold recoverywas obtained at pH 3 (for adsorption) and pH 5 (for desorption) with 1 M thyocyanate solution and a 5 cm length of column (the mass ofactivated carbon is 20 grams). In this condition, the average gold recovery is 90.00%, silver 7.28% and copper 4.93%, that were used severalgold ore samples. The average purity degree of gold is 49.67%, depend on the concentration of gold, silver and copper in the gold oresample.