Stabilitas / Solidifikasi Tanah Tercemar Merkuri Tambang Emas Rakyat Kulon Progo Yogyakarta Menggunakan Campuran Semen Portland Dan Tanah Tras

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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