Kalimantoro, Thaniya Triagustine (2016) Stabilisasi / Solidifikasi Tailing Tambang Emas Rakyat Kulon Progo Menggunakan Semen Portland Dan Tanah Tras. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Merkuri yang digunakan dalam proses amalgamasi pada
tambang emas rakyat seringkali mencemari tanah maupun badan
air di sekitar lokasi tambang. Hal ini terutama disebabkan oleh
penanganan tailing mengandung merkuri yang tidak benar.
Kolam tailing yang ada seringkali dibiarkan hingga penuh dan
meluap sehingga mencemari lingkungan di sekitarnya.
Kandungan merkuri dalam tailing tambang emas rakyat Kulon
Progo, DI Yogyakarta mencapai 302,31 mg/kg. Tailing dari
kegiatan pertambangan dikategorikan sebagai Limbah B3
Kategori 2 menurut Lampiran I PP No 101 tahun 2014 tentang
Pengelolaan Limbah B3. Upaya pengolahan terhadap limbah B3
yang dihasilkan perlu dilakukan yaitu melalui teknik
Stabilisasi/Solidifikasi (S/S) menggunakan semen Portland dan
tanah tras. Penelitian ini bertujuan untuk menentukan komposisi
antara semen portland dan tanah tras serta komposisi antara
binder dan tailing yang digunakan dalam proses S/S.
Tailing diambil dari lokasi tambang emas rakyat Kulon
Progo. Pengambilan sampel tailing dilakukan pada kolam tailing
dengan kedalaman pengambilan 10 cm dari permukaan sedimen.
Benda uji dibuat menggunakan cetakan kubus dengan ukuran
tiap sisi 5 cm. Variasi komposisi antara semen Portland dan
tanah tras adalah 100:0; 90:10; 80:20; 70:30; 60:40; 50:50; 40:60;
30:70; 20:80 dan 10:90. Sedangkan variasi komposisi antara
binder dan tailing yaitu 50:50; 40:60; 30:70; 20:80 dan 10:90.
Kualitas benda uji diukur melalui uji kuat tekan dan uji Toxicity
Characteristic Leaching Procedure (TCLP). Baku mutu hasil uji
TCLP menurut Lampiran IV PP No 101 Tahun 2014 sebesar 0,05
mg/L. Baku mutu kuat tekan untuk limbah B3 menurut Keputusan
Kepala Bapedal No. KEP-03/BAPEDAL/09/1995 sebesar 10
ton/m2 atau setara dengan 1 kg/cm2.
Komposisi antara semen Portland dan tanah tras
ditetapkan 40:60 dengan nilai kuat tekan yang dihasilkan sebesar
260 kg/cm2. Komposisi antara binder dan tailing ditetapkan pada
komposisi 50:50 dengan nilai kuat tekan 92,4 kg/cm2 dan hasil uji
TCLP kurang dari 0,21 mg/L. ========== Mercury, which is used in artisanal gold mining activity,
has often contaminated soil and water body near the mining site.
The main cause was the improper tailing handling. Tailing of
artisanal gold mining in Sangon, Kulon Progo, contained 302,31
mg/kg of mercury. The tailing pools have frequently become
overload and caused the mercury to flow over the land. Tailing
from this mining activity is classified as hazardous and toxic
waste of category 2 according to Appendix I of Government
Decree No. 101/104 concerning Hazardous Waste Management.
In order to manage the tailing residue properly, it is necessary to
apply stabilization/solidification (S/S) method. This research was
aimed to determine best composition of portland cement and
trass soil in the S/S process of the tailing residue. Besides, the
composition between binder and tailing which produced best
performance in the S/S process was examined.
Tailing residue was collected from artisanal gold mine in
Kulon Progo. Samples were collected from tailing pools up to 10
cm depth. Mortar was made using 5x5x5 cm specimen mould.
Mixtures of portland cement and trass soil as binders were made
using 100:0; 90:10; 80:20; 70:30; 60:40; 50:50; 40:60; 30:70;
20:80 and 10:90 variatons. Whereas variations of binder and
tailing compositions were 50:50; 40:60; 30:70; 20:80 and 10:90.
Quality of the S/S product was examined using compressive
strength and Toxicity Characteristic Leaching Procedure (TCLP)
tests. According to Appendix IV of Government Decree No.
101/2014, the maximum allowable value of TCLP test result is
0,05 mg/L. Whereas, that of the Head of Environmental Impact
Control Agency (BAPEDAL) Decree No. KEPiv
03/BAPEDAL/09/1995, stipulates the minimum value of
compressive strength standard of 10 tonnes/m2, or equals to 1
kg/cm2.
Best performance of the S/S product was observed in
portland cement and trass soil composition of 40:60, which
resulted in a compressive strength value of 260 kg/cm2. Proper
composition of binder and tailing was decided to be 50:50, which
resulted in a compressive strength value of 92,4 kg/cm2 and
TCLP result value of less than 0,21 mg/L.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSL 628.56 Kal s 3100016068139 |
| Uncontrolled Keywords: | Merkuri, semen Portland, stabilisasi/solidifikasi, tailing, tanah tras, mercury, portland cement, stabilization/solidification, tailing, trass soil |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD878.47 Soil remediation |
| Divisions: | Faculty of Civil Engineering and Planning > Environment Engineering > 25201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 11 Nov 2019 08:53 |
| Last Modified: | 11 Nov 2019 08:53 |
| URI: | http://repository.its.ac.id/id/eprint/71651 |
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