Tahyudi , Taskim (1998) Kelarutan emas pada bijih dalam kalim permanganat - asam klorida pada suhu kamar. Undergraduate thesis, FMIPA UNDIP.
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Abstract
Telah dilakukan destruksi bijih emas jenis native dengan ukuran 325 mesh, menggunakan campuran reagen kalium permanganat (KMnO4)-asam klorida (HCI) pada suhu kamar. Destruksi dilakukan dengan cara sampel direndam dalarn larutan KMnO4 pada daerah kisaran konsentrasi antara 3 sampai 7% b/v dan penambahan HC1 (1:4) v/v. Perendaman sampel dilakukan pada kisaran waktu antara 90 sampai 210 menit. Emas yang terlarut diekstraksi dengan metilisobutilketon, selanjutnya diukur menggunakan spektrofotometer serapan atom. Kondisi optimum pelarutan emas tercapai pada konsentrasi KMnO4 4% b/v dan waktu perendaman 180 menit. Disimpulkan bahwa campuran reagen kalium permanganat - asam klozida dapat digunakan untuk mendestruksi emas dari bijihnya dan mampu melazutkannya sebanyak 0,0164 mgram tiap gram sampel. Distruction of native gold ore 325 mesh by using potassium permanganate (KMnO4) - hydrochloric acid (HC!) had been studied. Distruction was done by soaking the sample in the mixture of (KMnO4) - (HCI) at room temperature. The range concentration of KMnO4 was 3 up to 7 % w/v, (HCI) concentration (1 : 4) v/v and the range of solubility time was 90 up to 210 minutes. The soluble gold was extracted by using methylisobutylketone and then determinated by using atomic absorption spectrophotometer. The maximum solubility of native gold ore was reached at the concentration of KMnO4 4 % w/v and soaking time 180 minutes. It was concluded that the mixture of KMnO4 - HC1 could be used to destruct of gold ore, the solubility of gold was 0,0164 mgram pergram sample.
Item Type: | Thesis (Undergraduate) |
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Subjects: | Q Science > QD Chemistry |
Divisions: | Faculty of Science and Mathematics > Department of Chemistry |
ID Code: | 30672 |
Deposited By: | Mr UPT Perpus 1 |
Deposited On: | 04 Nov 2011 10:58 |
Last Modified: | 04 Nov 2011 10:58 |
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