Pemisahan Emas Pada RAM (Random Access Memory) Komputer Dengan Metode Elektrolisis

Abstract

Gold metal has been using in electronics and telecommunication industry, for example RAM(Random Access Memory)computer. The separation of gold from the RAM(Random Access Memory)computer has been done in this study. To get the maximum results in the separation of the gold used variations potential difference( 6; 9; 12 volt ) and the type of precipitant (NaHSO3 and H2C2O4) . In this study, a certain number of samples is used samples RAM(Random Access Memory)computer electrolyzed H2SO4 for 1 hour. The precipitate formed is separated from the filtrate. The precipitate was dissolved in Aqua Regia at a temperature of 70˚C for 30 minutes further diluted with Aqua DM until the volume is 50 mL . Au concentration was analyzed by AAS(Atomic Absorption Spectrophotometry)and Au deposited with NaHSO3 and H2C2O4 . Based on the analysis result, the maximum Au concentration at the former RAM(Random Access Memory)computer is equal to 0,5054 ppm with potential 12 volt. For 5 grams of the sample , the maximum weight of Au precipitate obtained 0.97 miligrams by using H2C2O4 as a precipitant .
Keyword: Au concentration, NaHSO3, H2C2O4, H2SO4