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All Journal Jurnal Teknologi Pertambangan Jurnal Geomine PROMINE Soil REns Syntax Idea Jurnal Teknika : Jurnal Teoritis dan Terapan Bidang Keteknikan COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Jurnal Ilmu Multidisplin Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Cerdika: Jurnal Ilmiah Indonesia Innovative: Journal Of Social Science Research Lentera: Multidisciplinary Studies Jurnal Teknik Pertambangan (JTP) Diteksi : Jurnal Pengabdian Kepada Masyarakat JURNAL TEKNOLOGI MINERAL FT UNMUL Lentera: Multidisciplinary Studies Jurnal Teknologi Sumberdaya Mineral
Fahrul Indrajaya
Universitas Palangka Raya
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences Other

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Efektifitas Metode Amalgamasi dan Metode Flotasi pada Proses Pengolahan Emas di Wilayah Pertambangan Rakyat (WPR) Yossa Hutajulu; Lisa Virgiyanti; Wisnu Rijati; Fahrul Indrajaya; Yustinus Hendra Wiryanto
JURAL RISET RUMPUN ILMU TEKNIK Vol. 5 No. 2 (2026): Agustus: Jurnal Riset Rumpun Ilmu Teknik
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v5i2.8669

Abstract

The amalgamation and flotation methods are widely used by miners because the methods are simple, fast and easy. The purpose of this study was aims to test the effectiveness of gold recovery using the amalgamation and flotation methods in conventional gold processing. The research methods used were observation and testing using the amalgamation and flotation methods in conventional gold processing. The effectiveness analysis was carried out by calculating the percentage of gold produced in the amalgamation and flotation processing methods. The test was carried out on 10 samples, each weighing 10 kg. The amalgamation process used a Hg solution, while flotation used a detergent reagent. The total primary gold processing using the amalgamation method was 11.46 grams, while the total primary gold recovery using the flotation method was 12.15 grams. The results of gold processing using the flotation method were higher than those using amalgamation because flotation can separate gold more efficiently from ore containing various impurity minerals. Meanwhile, the amalgamation method, which uses mercury, tends to be less effective and loses some of the gold because it only binds very fine and dispersed gold particles, while flotation can handle ore with lower gold content and larger gold particles.
ANALISIS TINGKAT PENCEMARAN AIR BERDASARKAN PARAMETER FISIK DAN KIMIA PADA KOLAM BEKAS PENAMBANGAN PASIR KOTA PALANGKA RAYA Kemistin Dian Lestari; Dody Ariyantho Kusma Wijaya; Neny Sukmawatie; Saptawartono Saptawartono; Fahrul Indrajaya
Jurnal Teknika: Jurnal Teoritis dan Terapan Bidang Keteknikan Vol. 9 No. 2 (2026): Jurnal Teknika: Jurnal Teoritis dan Terapan Bidang Keteknikan, April 2026
Publisher : Fakultas Teknik Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jt.v9i2.25514

Abstract

Sand mining activities can cause environmental changes and reduce water quality in abandoned mining ponds due to alterations in the physical and chemical characteristics of aquatic ecosystems. This study aimed to analyze the level of water pollution in former sand mining ponds located in Kalampangan Village, Palangka Raya City, based on physical and chemical parameters and the Pollution Index (PI). The study employed a quantitative descriptive method using primary data obtained from water quality measurements, including Total Suspended Solids (TSS), Total Dissolved Solids (TDS), pH, copper (Cu), lead (Pb), and Chemical Oxygen Demand (COD). The analysis was conducted by comparing the measurement results with the water quality standards stipulated in Government Regulation Number 22 of 2021 and by calculating the Pollution Index (PI). The results showed that TSS and TDS concentrations complied with the applicable water quality standards, whereas several chemical parameters, including pH, Cu, Pb, and COD, exceeded the established limits. The low pH values indicated acidic water conditions, while the elevated COD levels suggested the presence of organic and inorganic pollutants in the water. Based on the Pollution Index (PI) calculation, all water samples were classified as slightly polluted. Therefore, environmental management measures such as liming, bioremediation, the utilization of aquatic plants, and aeration are recommended to improve water quality in former sand mining ponds.
Pengaruh Kapur Tohor dan Zeolite Pada Air Tambang di PT. Marunda Grahamineral Iqramina Sista Dewi; Fahrul Indrajaya; Noveriady Noveriady; Neny Sukmawatie; Yunida Iashania
Cerdika: Jurnal Ilmiah Indonesia Vol. 4 No. 4 (2024): Cerdika: Jurnal Ilmiah Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v4i4.784

Abstract

Air limbah tambang adalah udara yang berasal dari kegiatan penambangan batubara yang meliputi pengangkutan, pengangkutan dan penimbunan baik pada tambang terbuka maupun tambang bawah tanah yang dapat menyebabkan terbentuknya lumpur atau lumpur pengolahan udara dan udara asam tambang. Di PT. PT. Marunda Grahamineral air limbah tambang berasal dari area tambang termasuk dari ROM dan dialirkan ke kolam pengendapan yang kemudian dialirkan ke sungai yang berada di sekitar area penambangan. Air limbah tambang yang berada di settling pool SP 14 SE pit CTM memiliki pH 5 dan nilai TSS yang tinggi yaitu 9.460 mg/l. Pada penelitian ini dilakukan penambahan kapur tohor dan zeolit dengan dosis 0,1 gr/l, 0,5 gr/l dan 0,8 gr/l yang bertujuan untuk meningkatkan kualitas air limbah tambang. Setelah dilakukan percobaan dengan menambahkan kapur tohor dan zeolit ??kualitas air limbah tambang telah memenuhi standar baku mutu lingkungan. Namun, reaktivitas kapur tohor lebih besar dibandingkan dengan zeolit ??dalam meningkatkan kualitas air limbah tambang. Hal ini dapat dilihat dari peningkatah pH dan penurunan kadar kandungan Mn. Dimana dengan dosis efektif 0,1gr/l kapur tohor nilai pH yang awalnya 5 meningkat menjadi 7,7 dan kandungan Mn yang awalnya 0,03 mg/l menurun menjadi 0,00 mg/l.
Co-Authors Abigani, Rahfa Amru Ash Shodaq Ariyantho, Dody Arlindo Alves Mendonca Asri Fridtriyanda Asri Fridtriyanda Ayu Lusi Natallia Bambang Triyanto Bambang Triyanto BR Bagariang, Marsella Deddy Tanggara Dody Ariyantho Kusma Wijaya Eppi Marina Simanjuntak Erlangga Eka Wijaya FEBRI INDRIANTO Ferdinandus Ferdinandus Ferra Murati Fidayanti, Neny Haiki Mart Yupi Hendra Wiryanto, Yustinus I Putu Putrawiyanta Inso, Yos David Iqramina Sista Dewi Kemistin Dian Lestari Kristiawan, Juan Malau, Andri Antonius Marlen Fince T. L. Neny Sukmawatie Neny Sukmawatie Nina Yulianti Ningsih, Sonia Ayu Novalisae Noveriady Nuansa Mare Apui Ganang Purba, Aron Riris Setyowati Salampak, Salampak Saptarwatono Saptawartono Saptawartono Saptawartono, Saptawartono Simanjuntak, Eppi Marina Situmorang, David Benedictus Sofi Miftah Alrasyid Sonia Br Tarigan Sukmawatie, Neny Sustiyah Sustiyah Syarifah, Aulia Taruna, Yulian Virgiyanti, Lisa Wartono, Sapta Wijaya, Doddy Ariyantho Kusma Wisnu Rijati Yosafat Hazezon Sitompul Yossa Yonathan Hutajulu Yulian Taruna Yulinda Br Surbakti Yunida Iashania Yustinus Hendra Wiryanto