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All Journal Sinergi Jurnal Geomine Syntax Literate: Jurnal Ilmiah Indonesia Abdimas Universal Petro : Jurnal Ilmiah Teknik Perminyakan Indonesian Mining and Energy Journal JURNAL ABDI MASYARAKAT INDONESIA (JAMIN) International Journal of Innovation in Mechanical Engineering and Advanced Materials Jurnal Migasian
Subandrio
Universitas Trisakti, Fakultas Teknologi Kebumian Dan Energi, Program Studi Teknik Pertambangan
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Pemisahan Pasir Besi menggunakan Metode Jigging dengan Variabel Ukuran dan Stroke Muhammad Yoga Fadilla; Subandrio; Christin Palit; Wiwik Dahani; Fadliah
Indonesian Mining and Energy Journal Vol. 6 No. 1 (2023): Mei
Publisher : Program Studi Teknik Pertambangan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/imej.v6i1.16902

Abstract

Mineral pasir besi memiliki nilai ekonomis yang bermanfaat untuk kehidupan manusia. Pasir besi yang terdapat mineral seperti oksida besi, ilmenit, magnetit, hematite yang dibentuk dan tercuci oleh gelombang sehingga dalam proses pembentukannya terdapat sejumlah pengotor berupa kuarsa, piroksen, dan lain-lain. Pasir besi merupakan mineral besi yang memiliki perbedaan berat jenis dengan mineral kuarsa dan lain-lain. Oleh karena itu penelitian ini memiliki tujuan untuk melakukan pemisahan dengan perbedaan berat jenis antara mineral berharga dan mineral pengotornya (tailing) menggunakan metode Jigging guna meningkatkan kadar mineral berharga. Recovery yang didapatkan dengan pemisahan menggunakan metode perbedaan berat jenis ini mendapatkan kesimpulan bagaimanakah yang lebih efektif dalam pemisahannya. Variabel yang digunakan dalam penelitian ini berupa variasi ukuran pasir besi dan pukulan atau stroke, dari penelitian ini didapatkan hasil paling efektif pada ukuran material 100 mesh dengan pukulan atau stroke 35 dengan perolehan konsentrat sebanyak 167,4 gram dan tailing 12,27 gram dengan nilai recovery sebesar 94,99%.
Analisis Pengaruh Waktu Electrowinning Timbal dari Konsentrat Galena Riskaviana Kurniawati; Subandrio Subandrio
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.712 KB) | DOI: 10.36418/syntax-literate.v7i9.9383

Abstract

Galena (PbS) merupakan salah satu dari sedikit mineral yang bereaksi dengan asam nitrat dengan produk timbal nitrat. Larutan kemudian di electrowinning elektrolisis untuk mendapatkan timbal di katoda. Metode ini dapat menghilangkan banyak langkah pirometalurgi dan menghindari polusi udara sehingga lebih ramah lingkungan Pada penelitian ini terfokus pada pengaruh waktu electrowinning pada konsentrat galena. Konsentrat galena awal mengandung 17,9% Pb dilakukan proses leaching-electrowinning dengan variasi waktu electrowinning 30,60,90,120, dan 150 menit. Semakin lama waktu sampai 90 menit konsentrasi Pb meningkat, namun terjadi penurunan setelah 120 dan 150 menit. Titik maksimum dan optimum waktu electrowinning konsentrat galena pada suhu 50°C, yaitu pada 90 menit dengan konsentrasi Pb sebesar 86,9%.
Pembinaan Penambangan Emas Skala Kecil dan Masyarakat Lingkar Tambang Emas di Desa Cisarua, Bogor Irfan Marwanza; Masagus Ahmad Azizi; Riskaviana Kurniawati; Wiwik Dahani; Subandrio Subandrio; Taat Tri Purwiyono; Suherman Dwi Nuriana
Abdimas Universal Vol. 6 No. 2 (2024): Oktober (In Press)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Balikpapan (LPPM UNIBA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36277/abdimasuniversal.v6i2.463

Abstract

The Trisakti University Community Service Program (PKM) was carried out in Cisarua Village, Nanggung District, Bogor Regency, West Java, in collaboration with the local Regional Government. Stakeholder partners served as facilitators for this project, which aimed to socialize and establish sustainable mining practices for miners and communities around gold mines. Cisarua Village, located in Nanggung Regency, is known for having potential mineral resources, particularly gold deposits, which are often collected by mining communities both individually and collectively. However, this mining activity has major negative effects, leading the government to stop it, one of which being its damaging environmental impact. Environmental issues and land conditions following gold mining provide significant risks and concerns, including mercury and cyanide contamination, which are harmful to human life and the surrounding environment. One of the most significant issues has been the lack of reclamation of mine holes caused by human mining activity. Based on these issues, the team demonstrated the public on good and correct mining practices (GMP). The team is collaborating with local communities and governments to develop ways to predict future implications of gold mining activities. PKM activities are carried out by offering materials and discussions that have proven effective in developing community knowledge. The survey of 25 respondents showed that a greater understanding of good mining practices. Survey results show that previously 61% of respondents did not understand about GMP. After implementing education and training through PKM, there was an increase of 11% in understanding of GMP. This shows the effectiveness of the program in increasing awareness and knowledge about good and correct mining practices among participants.
Dari Jelantah ke Cuci Tangan: Mendaur Ulang Minyak Goreng Bekas Ayam UMKM menjadi Sabun Cair Berbasis Komunitas di Jabodetabek Irfan Marwanza; Wiwik Dahani; Subandrio; Riskaviana Kurniawati; Daffa Rahmawan Rahmat; Yusraida Khairani Dalimunthe
Jurnal Migasian Vol 10 No 1 (2026): Jurnal Migasian
Publisher : LPPM Institut Teknologi Petroleum Balongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36601/jm.v10i1.385

Abstract

Minyak jelantah adalah minyak yang telah digunakan lebih dari sekali dalam proses penggorengan makanan. Limbah minyak jelantah, menjadi persoalan lingkungan dan kesehatan masyarakat yang signifikan. Pembuangan sembarangan dapat mencemari tanah dan perairan, sementara penggunaan berulang berisiko terhadap kesehatan. Di sisi lain, akses terhadap produk kebersihan yang terjangkau tetap menjadi perhatian. Pemanfaatan limbah minyak jelantah sebagai bahan baku sabun menawarkan solusi potensial berbasis ekonomi sirkular. Pengabdian kepada masyarakat ini bertujuan untuk (1) memberdayakan mitra UMKM D’Besto dalam mengelola limbah jelantahnya secara bernilai ekonomis, (2) mentransfer teknologi sederhana pembuatan sabun cuci tangan cair kepada masyarakat sekitar, dan (3) meningkatkan kesadaran tentang pengelolaan limbah dan praktik hidup bersih. Metode pelaksanaan mencakup survei awal, sosialisasi, pelatihan pembuatan sabun cair melalui proses saponifikasi dingin dengan penambahan gliserin dan essential oil, serta evaluasi partisipatif melalui kuesioner dan observasi. Pelatihan berhasil dilaksanakan dengan partisipasi aktif. Sabun cuci tangan cair yang dihasilkan memenuhi parameter fisik (viskositas, warna, bau) yang dapat diterima dan efektif sebagai pembersih. Terjadi peningkatan pengetahuan peserta sebesar 85% mengenai bahaya jelantah dan teknik daur ulangnya. Mitra UMKM menyepakati sistem pengumpulan jelantah berkelanjutan. Minyak jelantah dari UMKM pangan berpotensi diupcycle menjadi produk sabun cair yang bermanfaat secara efektif. Pendekatan partisipatif berbasis masyarakat ini tidak hanya mengurangi limbah tetapi juga menciptakan produk kebersihan mandiri, mendorong ekonomi sirkular lokal, dan meningkatkan literasi lingkungan warga.
Optimization of Titanium Recovery from Tin Tailings Using Flotation Route Subandrio Subandrio; Wiwik Dahani; Rita Sundari; Riskaviana Kurniawati; Irfan Marwanza; Franko Sajow Darren
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol. 6 No. 3 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v6i3.28891

Abstract

Titanium has found widespread application across various industries due to its high corrosion resistance. It is commonly used in dental equipment, surgical instruments, bone implants, and marine components, and serves as an engine material in high-temperature environments. Because of its lighter weight compared to steel, titanium has also replaced stainless steel in many construction materials. In Bangka Island, Indonesia, tin tailings have been identified as a potential source of titanium, making the analysis of titanium in these tailings highly significant. This study employed the froth flotation method, known for its simplicity, speed, and cost-effectiveness, to analyze titanium content from tin tailings. Sodium oleate was used as the frother and collector, while sodium chlorate acted as the depressant. The mass ratios of depressant to collector were varied at fixed collector amounts (1:10, 5:10, 10:10, and 15:10) and fixed depressant amounts (10:3, 10:6, 10:9, and 10:12). The highest titanium concentration (2.03%) was achieved with a mass ratio of 10:12, while the optimal titanium recovery (45.51%) in the concentrate occurred with equal amounts (3.75 g) of depressant and collector, or at a mass ratio of 10:10, at 15 minutes of flotation time and neutral pH. X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyses indicated that the tin tailings primarily contained silicate and zircon minerals, with traces of titanium in the form of rutile, ilmenite, and titanate. These findings contribute valuable insights for future titanium extraction and processing industries.
COMPARATIVE STUDY USING LOW COST ACETIC AND SULFURIC ACIDS ON ROASTING AND PEROXIDE FOR LEACHING PROCESS TO EXTRACT PB FROM GALENA Wiwik Dahani; Rita Sundari; Subandrio Somali; Irfan Marwanza; Ivetta Ivetta
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol. 4 No. 2 (2022)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v4i2.17135

Abstract

Extraction of heavy metals from mineral concentrate applying leaching acids is a major issue due to simple, fast, and economical process. This article aims to present the application of acetic acid and sulfuric acid for lead (Pb) extraction from galena concentrate applying roasting (600oC and 60 min.) and peroxide oxidant (0.5 M) for 60 min. leaching process. Nowadays, lead has been broadly applied for batteries, besides for PVC tubes, chemicals, paint color, and alloys for joint. The peroxide increases the percentage of Pb extraction. This study shows the effect of acid concentrations (1.0 M, 1.5 M, and 2.0 M), temperatures (30, 50, and 70oC), and stirring speed (200, 400, and 600 rpm) on Pb extraction from galena. A particle size of galena ≤ 200 mesh after roasting has been used for leaching process. AAS has been used to determine Pb concentration in solution after leaching process. This study shows that acetic acid is a better leaching agent rather than sulfuric acid due to lead sulfate precipitation. Optimization result shows leaching with acetic acid achieved 35.64 ppm Pb extraction using 2.0 M acetic acid, 50oC, and stirring speed of 200 rpm. This study used low-cost acids as leaching agent for Pb recovery that can be viewed as a preliminary breakthrough in heavy metal recovery. The simple leaching technique looks promising for future application on heavy metal separation from mining mineral.
Co-Authors Andriyani Andriyani Azizi, Masagus Ahmad Bani Nugroho Bani Nugroho Boanerges Wino Patty Christin Palit Daffa Rahmawan Rahmat Dalimunthe, Yusraida Khairani Devin Indra Novega Dewi Ratna Wati Djoko Hartanto Emmy Fatmi B. I. Emmy Fatmi Budhya Fatmi Budhya Fadliah, Fadliah Franko Sajow Darren Idris Juradi, Muhammad Irfan Marwanza Ivetta Ivetta Juhara Depipa Junior Steve Palealu Khuzaimah Arifin Kurniawati, Riskaviana Muhammad Yoga Fadilla Ratna Ediati Reza Aryanto Shima Parameswari Adji Suherman Dwi Nuriana Suliestyah, Suliestyah Sundari, Rita Syamidi Patian Taat Tri Purwiyono Wiwik Dahani Wiwik Dahani Wiwik Dahani Wiwik Dahani