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Efektivitas Campuran Karbon Aktif Daun Nanas–Batubara dalam Peningkatan pH dan Penurunan Fe, Mn, serta TSS Air Asam Tambang PT Alreksa Bara Mitra
Ayu Ningtias
; Lucia Litha Respati
; Shalaho Dina Devy
; Harjuni Hasan
; Windhu Nugroho
Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Vol 3
, No 6
(2025)
Acid mine drainage (AMD) is characterized by low pH and high concentrations of heavy metals such as iron (Fe) and manganese (Mn) that exceed environmental quality standards, thus requiring effective treatment to prevent environmental pollution. This study aims to evaluate the ability of a mixture of activated carbon derived from pineapple leaves mixed with coal to increase pH and reduce Fe, Mn, and Total Suspended Solids (TSS) levels in acid mine drainage at PT Alreksa Bara Mitra. The process to...
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Evaluasi Produksi Overburden Menggunakan System Six Big Losses pada Pit K1 Mahakam PT. Insani Baraperkasa Kecamatan Loa Janan Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur
Nurhamidah, Nurhamidah
; Harjuni Hasan
; Ardhan Ismail
Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Vol 3
, No 5
(2025)
Overburden removal is a critical phase in coal mining operations, as it directly affects production continuity and operational efficiency. However, production realization often deviates from the mine plan due to various operational constraints. This study, conducted at Pit K1 Mahakam of PT. Insani Baraperkasa, evaluates the causes of underachievement in overburden stripping targets using the Six Big Losses framework, which classifies inefficiencies into Breakdown Losses, Setup and Adjustment Los...
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Pengaruh Karbon Aktif Ampas Tebu (Adsorben) terhadap Air Asam Tambang untuk Mengurangi Kadar Fe, Mn, dan TSS pada Sump PT Alreksa Bara Mitra
Brilliant Mercy Geometri
; Shalaho Dina Devy
; Lucia Litha Respati
; Harjuni Hasan
; Rety Winonazada
Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Vol 3
, No 4
(2025)
Acid mine drainage (AMD) is one of the major environmental problems arising from coal mining activities. AMD is formed through the oxidation of sulfide minerals, resulting in acidic water with high concentrations of dissolved heavy metals. This condition is characterized by elevated levels of Fe, Mn, and total suspended solids (TSS), which, if left untreated, can pollute nearby water bodies, damage aquatic ecosystems, and pose risks to human health. Therefore, effective, eco-friendly, and low-co...
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Evaluasi Unjuk Kerja Alat Gali-Muat pada Kegiatan Penambangan Batubara di PT. Insani Bara Perkasa Site Kam 11 Loajanan Kalimantan Timur
Ruslan Patur
; Harjuni Hasan
; Henny Magdalena
; Shalaho Dina Devi
; Ardhan Ismail
; Tommy Trides
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Vol 3
, No 3
(2025)
This study aims to evaluate the performance of the loading and unloading equipment in coal mining activities at the Mahakam Pit, PT Insani Bara Perkasa Site Km 11, East Kalimantan. The research was motivated by the importance of achieving mechanical equipment performance standards according to the Decree of the Minister of Energy and Mineral Resources No. 1827 of 2018. Data were obtained through direct observation and analysis of actual working time and evaluation of operational constraint facto...
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Analisis Biaya Fuel Consumption Alat Angkut Dump Truck dalam Aktivitas Pengangkutan Overburden PIT A9 PT. Mitra Abadi Mahakam Jobsite PT. Bukit Baiduri Energi
Fajar Ramadhan
; Harjuni Hasan
; Albertus Juvensius Pontus
; Henny Magdalena
; Ardhan Ismail
Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Vol 3
, No 3
(2025)
Mitra Abadi Mahakam as a contractor operating at PT. Bukit Baiduri Energi's jobsite, especially in the Pit A9 area, faces operational challenges related to variations in haul road grades. Differences in road gradients on the overburden hauling route have the potential to cause significant differences in fuel consumption between dump truck units, which ultimately affects the overall efficiency of hauling activities. The study was conducted quantitatively with primary and secondary data requiremen...
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Evaluasi Kegiatan Rehandling Batubara dan Kesesuaian Rencana Crushing pada ROM Port Area 2 PT Multi Harapan Utama
Nirwana Putri
; Windhu Nugroho
; Tommy Trides
; Henny Magdalena
; Harjuni Hasan
Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Vol 3
, No 3
(2025)
In rehandling activities In coal processing activities, mechanical tools such as crushers are needed to obtain production results in accordance with the company's desired targets according to the crusher target, therefore in processing it is necessary to carry out precise calculations, so that the ability of the tool (crusher) and know what things greatly affect the production processing process, so that it can be used optimally and has a high efficiency value for optimal production. Therefore,...
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Analisis Konsumsi Bahan Bakar Alat Gali Muat-Angkut pada Kegiatan Pengupasan Overburden PIT Seloklai: PT. Mitra Indah Lestari Kota Samarinda
Roland Fatar Fernados Sirait
; Albertus Juvensius Pontus
; Agus Winarno
; Harjuni Hasan
; Henny Magdalena
; Revia Oktaviani
Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Vol 3
, No 3
(2025)
Fuel consumption is a necessity in moving mechanical equipment, where fuel consumption is influenced by road conditions, horsepower, and load factors. PT. Mitra Indah Lestari uses Hyundai 480 and Sany750-H excavators. The transport equipment used is Wechai WT90, Tonly TLD90, and Quester CWE 330. This study uses a quantitative method and obtains fuel consumption results, where the fuel consumption of the Hyundai 480 and Sany 750-H excavators is 37.89 liters/hour and 59.91 liters/hour, respectivel...
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Evaluasi Performance Ban Micheline dan Brigstone Alat Angkut pada Pengangkutan Overburden dari Front Kerja Ke Disposal PT.Kaltim Diamond Coal Kabupaten Berau Kalimantan Timur
Yoga Achmad Rynaldy
; Harjuni Hasan
; Tommy Trides
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Vol 3
, No 2
(2025)
Dump truck tires are an important component in the operation of wheel-type units that require routine inspection because they directly affect the availability and performance of the transport equipment. In the OHT 777 type unit, six tires are used with a configuration of two tires in the front and four tires in the rear. This study aims to evaluate tire performance through the analysis of Key Performance Indicator (KPI) parameters, namely Ton Kilometer Per Hour (TKPH), Tread Utilization Rate (TU...
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Studi Sistem Drainase Air Tambang Batubara di Sump Pit Bara4 PT Berkat Anugerah Sejahtera
Faras Dwi Putra
; Salaho Dina Devy
; Agus Winarno
; Harjuni Hasan
; Windhu Nugroho
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Vol 3
, No 2
(2025)
Open-pit mining system mining is greatly influenced by surface runoff, rainwater and groundwater. This surface water runoff is highly dependent on rainfall catchment areas, climate, and land use. Handling surface water runoff entering the mining area by creating water channels in the form of open channels and closed channels. One of the mining methods that is generally carried out in Indonesia is the open-pit mining method, which is widely found in East Kalimantan. Large basins will be created a...
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Pengolahan Air Asam Tambang dengan Limbah Tempurung Sawit untuk Adsorpsi Fe, Mn, dan pH Pond
Evo Kristina
; Agus Wirnarno
; Harjuni Hasan
; Windhu Nugroho
; Lucia Litha Respati
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Vol 3
, No 2
(2025)
One of the negative impacts of the mining process is acid mine drainage which is formed from the oxidation of minerals containing iron sulfur, such as pyrite (FeS2) and pyrothite (FeS) by oxidizers such as water and oxygen. To handle or control acid mine drainage, one way is to use activated carbon or often referred to as activated charcoal, which is a type of carbon that has a very large surface area. Charcoal is a porous solid that contains 85% to 95% carbon, produced from materials containing...
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