Anisa, Elok Dian Karisma Pagri (2016) Stabilitas / Solidifikasi Tanah Tercemar Merkuri Tambang Emas Rakyat Kulon Progo Yogyakarta Menggunakan Campuran Semen Portland Dan Tanah Tras. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kegiatan tambang emas rakyat merupakan sumber
antropogenik terbesar pencemaran merkuri di tanah. Hasil uji
total konsentrasi (TK) merkuri pada sampel tanah dari lokasi
penambangan emas Kulon Progo Yogyakarta adalah 0,89 mg/kg.
Hasil tersebut melebihi baku mutu TK-C merkuri menurut
Lampiran V PP No. 101 Tahun 2014 tentang Pengelolaan Limbah
B3 sebesar 0,30 mg/kg. Oleh karena itu, diperlukan upaya
remediasi untuk meminimisasi tingkat pencemaran merkuri. Salah
satu metode yang dapat diaplikasikan adalah teknik
stabilisasi/solidifikasi (S/S). Penelitian ini bertujuan untuk
menentukan komposisi optimum binder semen dan tras yang
digunakan dalam proses S/S, serta komposisi tanah tercemar
yang dapat ditambahkan ke dalam campuran semen-tras.
Penelitian dilakukan dalam 2 tahap. Pada tahap I
digunakan komposisi semen portland-tras dengan variasi
perbandingan berat 100:0, 90:10, 80:20, 70:30, 60:40, 50:50,
40:60, 30:70, 20:80, dan 10:90. Sedangkan pada penelitian tahap
II dilakukan penambahan sampel tanah tercemar ke dalam
campuran optimum binder yang diperoleh dari penelitian tahap I,
dengan variasi rasio berat binder : tanah 50:50, 40:60, 30:70,
20:80, dan 10:90. Pada akhir tahap dilakukan uji Toxicity
Characteristic Leaching Procedure (TCLP) berdasarkan US EPA
method 1311. Uji kuat tekan dilakukan terhadap benda uji S/S
menggunakan Toorse Universal Testing Machine.Kadar merkuri
diukur menggunakan metode spektrofotometri serapan atom
menurut SNI 6989.78:2011.
Dari penelitian tahap I didapatkan komposisi optimum
semen-tras sebesar 10:90, dengan nilai kuat tekan 96 kg/cm2.
Sedangkan dari penelitian tahap II didapatkan nilai kuat tekan
komposisi optimum binder : tanah 10:90 yaitu 6 kg/cm2 dengan
konsentrasi merkuri pada uji TCLP sebesar 0,0011 mg/L. Hasil uji
kuat tekan memenuhi baku mutu menurut US EPA untuk
pengelolaan tanah tercemar sebesar 3,5 kg/cm2. Demikian pula
hasil uji TCLP memenuhu baku mutu untuk produk hasil S/S
sesuai dengan Lampiran IV PP No. 101 Tahun 2014 sebesar
0,05 mg/L. ========== Artisanal gold mining activities have become major
anthropogenic source of mercury contamination in soils. The total
mercury concentration in soil samples from public gold mine in
Kulonprogo Yogyakarta was 0,89 mg/kg, which exceeded the
quality standards of Government Regulation No. 101/2014
concerning Hazardous Waste Management of 0,30 mg/kg.
Therefore, remediation technology is required for minimizing the
hazards of mercury contamination. One of the methods is by
stabilization/solidification (S/S) technique. This research was
aimed to determine optimum composition of portland cement and
trass soil binders, and optimum ratio of soils which could be
added to the cement-trass soil mixture.
This research was consisted of two main stages. In the
first stage determination of the optimum composition of binder by
using cement : trass in weight ratio variations of 100:0, 90:10,
80:20, 70:30, 60:40, 50:50, 40:60, 30:70, 20:80, and 10:90 was
conducted. The second stage was done by adding mercury
contaminated soils into the optimum binder composition resulted
from stage 1 experiment, by using binder : soil variations of 50:50,
40:60, 30:70, 20:80, and 10:90. Quality of the S/S products was
determined using Toxicity Characteristic Leaching Procedure
(TCLP) and compressive strength tests. The TCLP test was done
according to US EPA method 1311. Mercury concentration was
analyzed using Atomic Absorption Spectrofotometry method
according to Indonesian Standards SNI 6989.78:2011. The
compresive strength was measured using Toorse Universal
Testing Machine. The optimum cement : trass composition was 10:90, with
compressive strength value of 96 kg/cm2. The second experiment
resulted in optimum binder : contaminated soil composition from
of 10:90, with compressive strength value of 6 kg/cm2 and
mercury TCLP test result of 0,0011 mg/L. These results met the
US EPA compressive strength standard for soil management of
3,5 kg/cm2 and TCLP standard for mercury of 0,05 mg/L,
according to Government Regulation No. 101/2014.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSL 628.56 Ani s 3100016066456 |
| Uncontrolled Keywords: | merkuri, semen portland, stabilisasi/solidifikasi, tanah, tras, mercury, portland cement, soil, stabilization/ solidification, trass |
| 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 09:16 |
| Last Modified: | 11 Nov 2019 09:16 |
| URI: | http://repository.its.ac.id/id/eprint/71652 |
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