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All Journal JAGE OPHIOLITE : Jurnal Geologi Terapan Majalah Pengabdian Indonesia
Awaliah, Wd Rizky
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Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences

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Studi Pengolahan Bijih Mangan Desa Kumbewaha, Kabupaten Buton Dengan Metode Hidrometalurgi Dalam Suasana Asam Awaliah, Wd Rizky; Yesfisari, Sri; Firdaus, Firdaus; Wahab, Wahab
Journal of Applied Geoscience and Engineering Vol 2, No 1 : Juni 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jage.v2i1.20102

Abstract

Hidrometalurgi dapat diartikan sebagai cara pengolahan logam dari batuan atau bijihnya dengan menggunakan pelarut berair (aqueous solution), atau secara detailnya hidrometalurgi adalah suatu proses dalam pekerjaan metalurgi dimana dilakukan pemakaian suatu zat kimia yang cair untuk dapat melarutkan suatu partikel tertentu. Salah satu tahapan yang penting dalam jalur proses hidrometalurgi adalah proses Leaching atau pelindian. Pada penelitian ini dilakukan proses pelindian bijih mangan yang diperoleh dari Desa Kumbewaha, Kecamatan Siotapina, Kabupaten Buton. Dimana kadar mangan (Mn) 60,89% dan kadar besi (Fe) 0,83%. Pada tahap pelindian ini diawali dengan melakukan preparasi bijih mangan dengan mereduksi ukuran hingga diperoleh 200 mesh. Pelindian yang dilakukan yaitu dengan menggunakan larutan asam sulfat (H2SO4), dengan variasi konsentrasi larutan 4%, 6%, 8%, 10%, persen solid pelindian 5%, 10%, 15%, 20%, temperatur pelindian 70ºC, 80ºC, 90ºC, 100ºC dan waktu pelindian selama 180 menit dengan molases 50g/l. Hasi penelitian menunjukan persentase perolehan Mn tertinggi yaitu 91,33% diperoleh pada konsentrasi asam 10%, persen solid 20%, temperatur 100ºC dan waktu pelindian 180 menit sedangkan persentase perolehan Fe tertinggi yaitu 80,01% diperoleh pada konsentrasi asam 10%, persen solid 20%, temperatur 100ºC dan waktu 180 menit
Penerapan Klasifikasi Massa Batuan dan Metode Kesetimbangan Batas Terhadap Kestabilan Lereng Tambang PT. Ifisdeco, Sulawesi Tenggara Oksteming, Jenly; Awaliah, Wd Rizky; Anshari, Erwin
OPHIOLITE: Jurnal Geologi Terapan Vol 6 No 1 (2024): APRIL 2024
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56099/ophi.v6i1.p36-41

Abstract

PT Ifishdeco often experiences problems in its mining activities, which originate from geotechnical issues, such as landslide events. This study aims to recommend the value of slope parameters to remain stable and safe by considering the influence of geological structures and types of landslides in the South Block Jey Pit of PT Ifishdeco Tbk. Slope stability analysis using the Bishop method with Mohr-Coloumb criteria based on direct shear strength test results and rock mass classification. The results of the study show that the safety factor value of the actual slope geometry on slope A and slope B obtained safety factor values of 0.79 and 0.83 with unstable conditions caused by the influence of the presence of discontinuity planes that reduce the strength of the slope constituent. Based on the kinematic analysis results, the landslide types found on slopes A and B are classified as wedge failures. Optimization of slope geometry is required as a recommendation for slope geometry design. Optimization of the slope height and bench slope is necessary.
Community Assistance in the utilization of Nickel Slag in the Morosi Village Firdaus; Awaliah, Wd Rizky; Anshari, Erwin; Wahab; Deniyatno; Mili, Marwan Zam
Majalah Pengabdian Indonesia Vol. 1 No. 2 (2024): Agustus 2024
Publisher : Teras Kampus as a member of PT Palem Edukasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69616/maindo.v1i2.15

Abstract

Morosi Village located in Konawe Regency is one of the areas in which there is a nickel processing company. The nickel processing produces solid waste, one of which is nickel slag. The amount of nickel slag is accumulating day by day, because each process of refining one ton of nickel product produces 50 times the solid waste, equivalent to 50 tons. So that from the results of quite a lot of waste, research was carried out to use solid waste as a concrete forming material, either as coarse and fine aggregate, or as a cement mixture. Government Regulation No. 101 of 2014 classifies nickel slag as B3 waste hazard category 2 with waste code B403. This means that nickel slag is a waste that has a delayed effect, and has an indirect impact on humans and the environment. Meanwhile, at the end of 2019, the Indonesian National Standard (SNI) concerning the choice of nickel slag material from electric furnaces. This SNI was also prepared by the Ministry of Industry to support the development of nickel slag standards and as a solution for nickel slag management. The existence of SNI is also intended as a reference to optimize the use of nickel slag as aggregate, substitute for natural aggregate and other uses. Some examples of products made from nickel slag include bricks, precast and ready-to-print concrete, road base and field, soil improvers, growing media and fertilizers, mortar and cement slag, composite portland cement, and cement geopolymers. To accommodate the use of nickel slag, assistance is needed to the community, especially in Morosi Village to be able to process with appropriate, effective and efficient technology in accordance with its physical characteristics and chemical characteristics. This will be an alternative to reduce the amount of nickel slag that can pollute the environment, in addition to increasing people's income.
Co-Authors Anshari, Erwin Deniyatno Firdaus Firdaus Firdaus Mili, Marwan Zam Oksteming, Jenly Wahab Wahab Wahab Yesfisari, Sri