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All Journal IJOG : Indonesian Journal on Geoscience Jurnal Teknologi Mineral dan Batubara Prosiding Temu Profesi Tahunan PERHAPI Jurnal Teknologi Mineral dan Batubara
Wibowo, Aryo Prawoto
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Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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APLIKASI METODE EVALUASI EKONOMI REAL OPTION PADA RENCANA INVESTASI SMELTER NICKEL PIG IRON Husin, Michael Kelvin Eddy; Wibowo, Aryo Prawoto; Rosyid, Fadhila Achmadi
Prosiding Temu Profesi Tahunan PERHAPI 2020: PROSIDING TEMU PROFESI TAHUNAN PERHAPI
Publisher : PERHAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36986/ptptp.v0i0.165

Abstract

Industri ekstraksi logam terus membutuhkan proses yang lebih baik dengan tujuan meningkatkan keuntungan ekonomi dan ramah lingkungan. Secara umum reduksi selektif dapat mencapai efisiensi proses yang lebih tinggi dibandingkan dengan metode ekstraksi nikel yang banyak dipakai seperti Rotary Kiln-Electric Furnace (RKEF) maupun blast furnace. Pemanfaatan bijih nikel laterit low grade yang efisien dan menguntungkan dinilai sangat penting. Nickel Pig Iron (NPI) merupakan sebuah variasi dari produk feronikel.  NPI sendiri memiliki ciri khas kadar nikel yang rendah dan kadar besi yang tinggi dibandingkan dengan produk feronikel lainnya. Kegiatan pertambangan memerlukan waktu yang lama dan resiko yang besar dalam pengembalian investasinya. Hal ini disebabkan oleh besarnya nilai investasi yang diperlukan dan adanya faktor ketidakpastian ekonomi yang tinggi. Pada penelitian ini, faktor ketidakpastian ekonomi yang tinggi terutama disebabkan oleh pergerakan harga komoditas nikel. Metode Real Option dapat menyesuaikan faktor ketidakpastian tersebut dengan cara menilai aset dengan turut menghitung pengembalian dari aset nyata atau melindungi nilai aset tersebut saat terjadi hal yang negatif atau merugikan, sebagai contoh turunnya harga nikel. Hasil analisa real option  menyatakan bahwa investasi ini layak dan menguntungkan dengan nilai  opsi (NPV strategis) sebesar $380.165.046,94 dan option premium sebesar $187.154.405,56.
ANALISIS SUSTAINABLE DEVELOPMENT BERBASIS KOMODITAS TIMAH DI PROVINSI KEPULAUAN BANGKA BELITUNG MENGGUNAKAN PENDEKATAN DATA PANEL Listiawati, Sitra Wahyu; Wibowo, Aryo Prawoto; Rosyid, Fadhila Achmadi
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No1.2024.1338

Abstract

Sustainable development is one of the important aspects of the development of a region. Development planning of a region has many obstacles, one of them is the dependence on a certain sector that becomes a source of regional income, such as the tin mining sector in Bangka Belitung Province. Sustainable development has several goals that are represented by three main aspects; economic, social, and environmental aspects of the six regencies in the Bangka Belitung Island Province. The economic aspect uses Gross Regional Domestic Product data from the tin mining sector, the social aspect uses Human Development Index data, and the environmental aspect uses the Environmental Quality Index data. These three aspects will be used as indicators to obtain the value of the Sustainable Development Index in the Bangka Belitung Islands Province. This study used the panel data method to examine the influence of the tin mining sector as one of the largest contributors to regional income, on sustainable development in the Bangka Belitung Islands Province. The panel data method was used to analyze the economic, social, and environmental aspects of the Sustainable Development Index so that the most influence sustainable development aspect in the Bangka Belitung Islands Province can be identified. The results of this study show that the mining sector  had the least contribution of 0.17 units to the Sustainable Development Index compared to the Human Development Index value of 5.9 units and 0.48 units of the Environmental Quality Index value which represented social and environmental aspects.
Estimating Groundwater Inflow to The Underground Mine Works using a 3D Groundwater Model at Vein Kubang Cicau, UBPE Pongkor Naiborhu, Kory Yohana Adinda; Anggayana, Komang; Widodo, Lilik Eko; Wibowo, Aryo Prawoto
Indonesian Journal on Geoscience Vol. 11 No. 3 (2024)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.11.3.423-435

Abstract

Estimating groundwater inflow to underground mines is essential for ensuring that mining activities can be conducted safely and continuously. Research conducted at UBPE Pongkor indicates that the veins have the fault connectivity with the Kubang Cicau vein showing potential for deeper mining, while other veins are expected to become exhausted. As the result, the Kubang Cicau vein will likely be at a lower elevation in the future. Planning decisions regarding groundwater control measures, such as dewatering, can be made in advance, contributing to a more efficient assessment of the economic feasibility of mining development. Groundwater modeling using MODFLOW software predicted a maximum groundwater discharge of 55 L/s. To address the model uncertainty, a sensitivity analysis was performed by increasing the hydraulic conductivity parameter by two order of magnitude, as this value significantly affects groundwater inflow. Conversely, decreasing the hydraulic conductivity by two order resulted in a new discharge estimate of 87 L/s. In the worst-case scenario, with the highest specific storage values, the inflow increased to 76 L/s. This demonstrates that although changes in specific storage have a notable effect on groundwater inflows, the impact is less pronounced compared to the changes in hydraulic conductivity. Nonetheless, Ss remains a key parameter, particularly in transient simulations where storage plays a more significant role in the system response to changes in water levels.
ANALISIS SUSTAINABLE DEVELOPMENT BERBASIS KOMODITAS TIMAH DI PROVINSI KEPULAUAN BANGKA BELITUNG MENGGUNAKAN PENDEKATAN DATA PANEL Listiawati, Sitra Wahyu; Wibowo, Aryo Prawoto; Rosyid, Fadhila Achmadi
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No1.2024.1338

Abstract

Sustainable development is one of the important aspects of the development of a region. Development planning of a region has many obstacles, one of them is the dependence on a certain sector that becomes a source of regional income, such as the tin mining sector in Bangka Belitung Province. Sustainable development has several goals that are represented by three main aspects; economic, social, and environmental aspects of the six regencies in the Bangka Belitung Island Province. The economic aspect uses Gross Regional Domestic Product data from the tin mining sector, the social aspect uses Human Development Index data, and the environmental aspect uses the Environmental Quality Index data. These three aspects will be used as indicators to obtain the value of the Sustainable Development Index in the Bangka Belitung Islands Province. This study used the panel data method to examine the influence of the tin mining sector as one of the largest contributors to regional income, on sustainable development in the Bangka Belitung Islands Province. The panel data method was used to analyze the economic, social, and environmental aspects of the Sustainable Development Index so that the most influence sustainable development aspect in the Bangka Belitung Islands Province can be identified. The results of this study show that the mining sector  had the least contribution of 0.17 units to the Sustainable Development Index compared to the Human Development Index value of 5.9 units and 0.48 units of the Environmental Quality Index value which represented social and environmental aspects.
Co-Authors Husin, Michael Kelvin Eddy Komang Anggayana Lilik Eko Widodo Listiawati, Sitra Wahyu Naiborhu, Kory Yohana Adinda Rosyid, Fadhila Achmadi