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All Journal Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Ranah Research : Journal of Multidisciplinary Research and Development
Rizkie, Dania
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Karakterisasi Geokimia Overburden Tambang Batubara Dengan Metode NAPP Di Area PT. Bukit Asam, Tanjung Enim, Sumatera Selatan Rizkie, Dania; Ibrahim, Eddy; Setiawan, Budhi
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 6 No. 5 (2024): Ranah Research : Journal Of Multidisciplinary Research and Development (Juli 20
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/rrj.v6i5.1050

Abstract

Material timbunan dari overburden dapat menyebabkan pembentukan air asam tambang (AAT), tujuan dari penelitian ini untuk pencegahan pembentukan AAT pada overburden dari tambang batubara, karakterisasi geokimia memberikan informasi batuan yang berpotensi membentuk AAT dengan menggunakan uji statik sehingga diperoleh nilai Net Acid Generation (NAG) dan Net Acid Producing Potency (NAPP), selanjutnya pH NAG dan NAPP diklasifikasikan menjadi Potential Acid-Forming (PAF) dan Non Acid Forming (NAF). Hasil dari penelitian ini menunjukkan material overburden dengan litologi claystone memiliki pH NAG 3,73 dan NAPP 55,49 Kg H2SO4/ton dan litologi Carbonaceous Claystone dengan pH NAG 3,45 dan NAPP 49,58 Kg H2SO4/ton, litologi sandstone dengan pH NAG 4,46 dan NAPP 59,69 Kg H2SO4/ton, ketiga jenis batuan ini diklasifikasikan menjadi lapisan PAF karena memiliki pH NAG yang rendah dan NAPP yang tinggi, material overburden dengan litologi siltstone memiliki pH NAG 4,66 dan NAPP -34,71 Kg H2SO4/ton. Batuan ini diklasifikasikan menjadi NAF karena memiliki pH NAG diatas 4,5 dan NAPP yang rendah.
Analisis Emisi Gas Buang dan Efisiensi Pembakaran Menggunakan Tungku Briket Batubara Aprilliana; Rizkie, Dania; Fachrurozi
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 2 (2026): May (Inpres)
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i2.1795

Abstract

The use of coal briquettes as an alternative energy source in Indonesia is often not accompanied by knowledge of their utility and environmental impacts. In its application, the volume of the furnace can affect the utility and combustion rate. This study aims to analyze and compare the efficiency and exhaust gas emission profiles of coal briquette combustion residues in furnaces with different sizes. This study will use an experimental method from two coal briquette furnaces, namely 5 kg (Furnace A) and 10 kg (Furnace B). This study will measure the concentration of , from the coal briquette combustion process using a Gas Analyzer. The results show that Furnace A has a concentration of 〖 CO_2, CO, SO〗_2, and NO_2 from the coal briquette combustion process using a Gas Analyzer. The results of the study show that Furnace A has a concentration of CO_2 1.30 %, CO 168 mg/〖Nm〗^3, 〖SO〗_2 16.8 mg/〖Nm〗^3, dan〖NO〗_2 251 mg/〖Nm〗^3. The results of Furnace B had a concentration of CO_2 1.44 %, CO_2 1.44 %, 〖SO〗_2 17.2 mg/〖Nm〗^3 and 〖NO〗_2 352 mg/〖Nm〗^3. These results show that the combustion rate using Furnace A with a capacity of 5 kg produces higher heat with lower exhaust gas emission values than Furnace B with a capacity of 10 kg. This situation occurs because Furnace A has a combustion chamber that tends to be denser than Furnace B, so that the process of heat loss to the furnace wall is minimal, the heat becomes concentrated and the temperature rises drastically. This makes the use of Furnace A more efficient than Furnace B.
Co-Authors Aprilliana Budhi Setiawan Eddy Ibrahim Fachrurozi