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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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Identifikasi Kandungan Merkuri (Hg) dan Tingkat Keasaman (pH) pada Sungai Takaras Terdampak Aktifitas Pertambangan Emas di Kecamatan Rakumpit Lisa Virgiyanti; Amru Ash Shodaq; Fahrul Indrajaya; Neny Fidayanti; Neny Sukmawatie
JURAL RISET RUMPUN ILMU TEKNIK Vol. 5 No. 2 (2026): : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v5i2.8530

Abstract

Takaras River is a river basin that is vulnerable to pollution, particularly from the mercury usage in small-scale gold mining. This study aims to identify water quality based on mercury (Hg)and pH levels in the Takaras River. Samples were taken at two locations using a purposive sampling method. Results showed indications of mercury use on former gold mining land around the Takaras River altought the mercury content level was below 0.075 µg/L or 0.00075 mg/L in sample 1 and 2. Based on the test results, the acidity level (pH) in the two water samples from Takaras River is 3.86 and 3.84 in sample 1 and 2, compared to the maximum pH quality standard of 6-9 for Class II water, it is concluded that the scale of acidity in Takaras River is very low, indicating that the water quality in the Takaras River is highly acidic, abnormal, and shows signs of serious pollution. The implications of low pH levels in the Takaras River can cause damage to the Takaras River ecosystem, a decline in soil quality and fertility, and an increase in heavy metal toxicity in the environment surrounding the river.
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): : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

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.
Co-Authors Abigani, Rahfa Amru Ash Shodaq Ariyantho, Dody Arlindo Alves Mendonca Asri Fridtriyanda Asri Fridtriyanda Aulia, Syarifah Ayu Lusi Natallia Bambang Triyanto Bambang Triyanto BR Bagariang, Marsella Deddy Tanggara 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 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 Sista Dewi, Iqramina Situmorang, David Benedictus Sofi Miftah Alrasyid Sonia Br Tarigan Sukmawatie, Neny Sustiyah Sustiyah Taruna, Yulian Virgiyanti, Lisa Wartono, Sapta Wijaya, Doddy Ariyantho Kusma Wisnu Rijati Yosafat Hazezon Sitompul Yossa Hutajulu Yossa Yonathan Hutajulu Yulian Taruna Yulinda Br Surbakti Yunida Iashania Yustinus Hendra Wiryanto