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All Journal Rekayasa Mesin Jurnal Teknologi Mineral dan Batubara Syntax Literate: Jurnal Ilmiah Indonesia Abdimas Universal International Journal of Community Service INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Jurnal AKAL: Abdimas dan Kearifan Lokal Indonesian Mining and Energy Journal JURNAL ABDI MASYARAKAT INDONESIA (JAMIN) Journal of Earth Energy Science, Engineering, and Technology International Journal of Innovation in Mechanical Engineering and Advanced Materials Jurnal Teknologi Mineral dan Batubara
Kurniawati, Riskaviana
Universitas Trisakti
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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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%.
Pelatihan Pembuatan Mineral Tawas Berbahan Dasar Limbah Kaleng Bekas Bagi Masyarakat Sukmajaya, Depok Riskaviana Kurniawati; Wiwik Dahani; Irfan Marwanza; Fadliah Fadliah; Arinda Ristawati; Muhammad Napis Fikri
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.v6i2.305

Abstract

All human activities inevitably produce waste. The amount of waste increases as the city grows. Sukmajaya District, Depok City is one of the districts that has the potential for very high waste accumulation. This area is a place for immigrants who work in Jakarta. This has a negative impact, namely the increase in the number of Final Disposal Sites (TPA) from year to year. The recycling process is a solution that can save energy and reduce landfill waste. The use of can waste as raw material in making alum or potassium aluminate sulfate K[Al(SO4)2.12H2O] is very relevant. The basic material used in making alum cans has the advantage of being more economical and can help reduce packaging can waste which has the potential to pollute the environment. The team held training in making alum minerals from used can waste in Sukmajaya District, Depok City. This activity aims to educate the public in utilizing used can waste into alum mineral products. People can use it to purify water in an environmentally friendly and economical way. The results of the training activities showed an increase in participants' awareness and skills in managing canned waste into value-added products. The number of training participants increased from 40% before training to 90% after training. Apart from that, participants' skills in making alum from used can waste also increased from 25% before the training to 85% after the training. It is hoped that this training can make a positive contribution in efforts to manage waste sustainably and protect the environment.
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.
PYROMETALLURGICAL PROCESS FOR ZINC ANALYSIS IN SPHALERITE APPLYING XRD AND XRF Dahani, Wiwik; Kurniawati, Riskaviana; Sundari, Rita; Marwanza, Irfan; Rachman, Faisal
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1525

Abstract

This paper has analyzed dominant zinc element in sphalerite naturally found together with galena in mineral ore. Since pyrometallurgical route related to roasting process is very common to mineral dressing, therefore, this investigation has studied the effect of varied roasting time (30 min, 60 min, and 90 min) and temperature (500oC, 600oC, and 700oC) on zinc mineral examination using XRD (X-Ray Diffraction) and zinc element using XRF (X-Ray Fluorescence) analyses. Previous studies usually applied cheaper AAS (Atomic Absorption Spectrometer) for zinc analysis in aqueous solution, however, sphalerite is a solid matrix and therefore, this study has applied XRF to analyze zinc. Pyrometallurgical process of zinc mineral in sphalerite is related to mineral transformation in the form of ZnSO4, ZnS, and ZnO that cannot be detected by XRF. Therefore, this study has used XRD that can observe mineral transformation.   The XRD pattern shows four intense peaks at 2θ (28o, 47o, 56o, and 76o) justified sphalerite (ZnS) sample with little amount of pyrite (FeS2) and galena (PbS) as impurities. The XRF analysis shows from 30 min to 90 min, the Zn content has increased remarkably at 700oC and Zn content looked stagnant at 500oC, while Zn content increased dramatically from 60 min to 90 min at 600oC. During roasting process at high temperature, ZnS mineral converted to ZnO and expelled SO2 gas due to oxidation reaction causing weight reduction. The study is valuable for mineral processing in searching for optimization.
Prevention and Mitigation of Oil Waste In Coastal Areas For Fishing Communities Pauhesti, Pauhesti; Kurniawan Saputra, Ade; Widiyatni, Harin; Maulindani, Sri Feni; Kurniawati, Riskaviana; Kalasnikova Suparmanto , Albert; Wastiyah, Lailatul; Raihan Azica , Muhammad; Dolfina Kilmas, Theresia
International Journal Of Community Service Vol. 4 No. 3 (2024): August 2024 (Indonesia - Malaysia)
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v4i3.279

Abstract

Oil spills in coastal areas are a serious environmental issue that can cause damage to marine ecosystems, water pollution, and economic losses for fishing communities. This community service project aims to enhance fishermen's understanding of the negative impacts of oil spills and to provide practical skills and knowledge regarding oil waste management. The approach used includes training on the use of absorbent tools, binding chemicals, and localization technologies to handle oil spills. Additionally, the project introduces environmentally friendly technologies to reduce the risk of oil leaks or spills from fishing vessels. The project results indicate a significant increase in the knowledge and skills of the participating fishermen regarding oil waste management. Further discussion reveals the importance of implementing comprehensive coastal area management strategies to prevent and mitigate oil pollution. In conclusion, this project not only successfully achieved its goal of enhancing fishermen's capacity but also offers a replicable model for similar programs in other coastal areas. Therefore, active participation from fishing communities and continuous support from various stakeholders is essential for environmental sustainability and the well-being of coastal communities.
KARAKTERISTIK ABU LAYANG (FLY ASH) DARI PLTU TANJUNG SELOR DAN POTENSINYA SEBAGAI PREKURSOR MATERIAL ALUMINOSILIKAT Hayati, Nur; ‘Adany, Fildzah; Nugraeni, Crhistine Dyta; Syarif, Iif Ahmad; Kurniawati, Riskaviana
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1499

Abstract

Around 500 million tonnes of coal combustion by-products are produced annually, with Fly Ash accounting for about 70% of the by-product. Therefore, using Fly Ash is crucial because if it is not processed and utilized correctly, it can harm the environment and human health. The use of Fly Ash is strongly influenced by its characteristics, which are different for each source because it depends on the type of coal, combustion, and cooling conditions. Therefore, characterization was carried out in this study using XRF and XRD on Fly Ash from Tanjung Selor PLTU. Based on ASTM C618, PLTU Fly Ash Tanjung Selor is class F Fly Ash because the amount of SiO2+Al2O3+Fe2O3 is 71,4% (>70%) and the amount of CaO is 13,83% (<15%). The XRD results also show that Fe2O3 and SiO2 dominate the Fly Ash with the appearance of the peak of Fe2O3 (hematite) at 2θ = 33,44; 35,57; 43,27° (PDF 01-073-0603) and SiO2 (quartz) at 2θ = 20,81; 26,63; 50,14; 57,26; 68,34° (PDF 01-085-0335). The characteristics of this Fly Ash indicate that it has the potential as a precursor for the synthesis of zeolite X and P because it has a SiO2/Al2O3 ratio of 1,63. In addition, due to the dominant Si and Al content, Fly Ash has the potential as a geopolymer precursor; the dominant Fe content (27%) can also increase the geopolymer's development strength.
Introduction and Consultation on the Indonesia's Oil and Gas Sharing Contract at CNG Co. Sunny Yulia, Prayang; Hari Karyadi Oetomo, R.; Ristawati, Arinda; Fattahanisa, Aqlyna; Kurniawati, Riskaviana
International Journal Of Community Service Vol. 4 No. 4 (2024): November 2024 (Indonesia - Thailand - Malaysia)
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v4i4.812

Abstract

Indonesia's oil and gas sector has traditionally employed Production Sharing Contracts (PSCs) to regulate the sharing of revenues between the government and contractors. Two key PSC models are used: PSC Cost Recovery and PSC Gross Split. The PSC Cost Recovery model allows contractors to recover their exploration and production costs before profits are shared, providing financial protection but reducing long-term profitability. Conversely, the PSC Gross Split model, introduced in 2017, offers a simpler revenue-sharing mechanism, eliminating cost recovery and directly splitting gross revenue between the government and contractors. This study analyzes the financial implications of both models using economic simulations, focusing on key indicators like net cash flow, net present value (NPV), pay-out time, and discounted cash flow (DCF) rate of return. Results show that the Gross Split model generates significantly higher gross revenue ($420.908 million) than Cost Recovery ($46.362 million), but at the cost of greater financial risks for contractors due to higher upfront investments and operating costs. The Gross Split model also provides higher long-term returns, with a net cash flow of $67.138 million compared to $8.252 million in Cost Recovery. However, the pay-out time is longer, and the DCF rate of return is slightly lower (29.95% vs. 31.8%). Ultimately, PSC Gross Split is more suited for contractors with higher risk tolerance and capital resources, while PSC Cost Recovery may be preferable for smaller contractors seeking to minimize financial risks. Both models offer distinct advantages depending on the contractor’s financial capacity and risk appetite.
City Gas Network Uses and Benefits Socialization For Community In Tanjung Gedong Area of West Jakarta Yulia, Prayang Sunny; Ristawati, Arinda; Prima, Andry; Kurniawati, Riskaviana; Fattahanisa, Aqlyna; Wijayanti, Puri
International Journal Of Community Service Vol. 3 No. 2 (2023): May 2023 (Indonesia - Malaysia )
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v3i2.181

Abstract

City gas network socialization is a community service that aims to make community understand the development of the city gas distribution sector in Indonesia and provide information to the community about liquified petroleum gas (LPG) substitute. A gas network for households means distributing gas through pipes to households. The limited availability of household gas in DKI Jakarta made this socialization theme raised. The location chosen is the Tanjung Gedong area, Tomang-sub district, Grogol Petamburan district, West Jakarta, which in this case, the area is a densely populated area, especially family settlements. The participants who took part in this community service were housewives. The method used is to provide socialization about the city gas network developed by the government for household gas purposes, the socialization is carried out online with the zoom facility and some others offline in the community while still using the existing health protocol. The result of this community service activity is that the community can recognize and understand the existence of a gas network whose infrastructure development is being developed by the government through PT Perusahaan Gas Negara (PGN) Tbk. This community service makes the community aware of the flow of the city gas network development program.
SOSIALISASI JARINGAN GAS PERKOTAAN BAGI MASYARAKAT Ristawati, Arinda; Prima, Andry; Yulia, Prayang Sunny; Kurniawati, Riskaviana; Puspitosari, Meldinar Riska; Fattahanisa, Aqlyna; Wijayanti, Puri; Aryanto, Reza
Jurnal Abdi Masyarakat Indonesia (JAMIN) Vol 5 No 1 (2023): JURNAL ABDI MASYARAKAT INDONESIA (JAMIN)
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jamin.v5i1.15730

Abstract

Socialization of the utilizations and advantages of city gas is a community service that aims to make people understand the growth of the urban gas distribution sector in Indonesia and provide information to the public about LPG substitute economic energy sources. Gas network for households means distributing gas through pipes to households. The limited availability of household gas in DKI Jakarta made this socialization theme raised. The location chosen is the Tanjung Gedong area, Tomang-sub distrct, Grogol Petamburan district, West Jakarta, which in this case, the area is a densely populated area, especially family settlements. The participants who took part in this community service were housewives.  The method used is to provide socialization about the urban gas network developed by the government for household gas purposes, the socialization is carried out online with the zoom facility and some others offline in the community while still using the existing health protocol. The result of this community service activity is that the public is able to recognize and understand the existence of a gas network whose infrastructure development is being developed by the government through PT PGN Tbk. This community service makes the community clearly aware of the flow in the “jargas” development program.
Pengaruh pH dan Ukuran Partikel Dalam Proses Flotasi Bijih Nikel Limonit Lie, Nobel Alief; Subandrio; Palit, Christin; Dahani, Wiwik; Kurniawati, Riskaviana; Fadliah
Indonesian Mining and Energy Journal Vol. 6 No. 2 (2023): November
Publisher : Program Studi Teknik Pertambangan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/imej.v6i2.19244

Abstract

Peningkatan konsumsi nikel mencapai 17,2 % pada tahun 2021. Hal ini mempengaruhi jumlah sumberdaya dan cadangan nikel terutama bijih laterit. Peningkatan produksi nikel laterit diakibatkan karena berkurangnya pasokan nikel sulfida berkadar tinggi. Oleh karena itu perlu dilakukannya proses yang lebih ekonomis untuk memperoleh nikel dari sumberdaya, salah satunya dengan metode flotasi. Pada penelitian kali ini berfokus pada permasalahan pengaruh pH dan ukuran partikel dalam pengolahan bijih nikel limonit dengan metode flotasi. Tujuan dari penelitian ini adalah untuk mendapatkan data-data terkait optimalisasi variabel flotasi yaitu pH dan ukuran partikel yang berkaitan dengan hasil recovery dari hasil flotasi. Adapun variabel flotasi yang dianalisis yaitu ukuran partikel -100+120 mesh, -120+170 mesh, -170+200 mesh, -200 mesh dan pH larutan 9, 10, 11. Variabel tetap pada proses flotasi ini adalah waktu aerasi 10 menit, persen padatan 25%, dosis kolektor asam oleat 1000 g/ton, dosis depresan sodium silikat 1500 gr/ton dan frother pine oil 85 gr/ton. Hasil dari penelitian ini menunjukan bahwa pH dan ukuran partikel berpengaruh dalam kestabilan proses flotasi. Kemudian didapatkan hasil flotasi terbaik yaitu pada kondisi pH 10 dan ukuran -170+200 mesh dengan nilai recovery sebesar 85,30%.
Co-Authors Afiat Anugrahadi Afiat Anugrahadi, Afiat Ananta Ihza Hiswara, M Mirza Andry Prima Aqlyna Fattahanisa Arinda Ristawati Aryandi, Firman Aryanto, Reza Azizi, Masagus Ahmad Chairul Nas Damarizky, Rico Darren, Franko Sajow Devin Indra Novega Dina Asmaul Chusniyah Dolfina Kilmas, Theresia Emmy Fatmi Budhya Fachry Abda El Rahman Fadliah Fadliah Fadliah Fadliah, Fadliah Fadliah, Fadliah Faisal Rachman Faldo Matulessy Feni Maulindani, Sri Firman Aryandi Fitra Yuda, Himmes Hadi Purnomo Hari Karyadi Oetomo, R. Harin Widiyatni Hartono, Kartika Fajarwati Havidh Pramadika Himmes Fitra Yuda iputu rama aryawan Irfan Marwanza Kalasnikova Suparmanto , Albert kartika fajarwati hartono Kurniawan Saputra, Ade Lailatul Wastiyah Lie, Nobel Alief Maulani, Mustamina Maulindani, Sri Feni Muhammad Napis Fikri Mustamina Maulani Nas, Chairul Nugraeni, Crhistine Dyta Nugraheni, Rosmalia Nur Hayati Palit, Christin Patian, Syamidi Pauhesti, Pauhesti Puri Wijayanti, Puri Puspitosari, Meldinar Riska Raihan Azica , Muhammad Reno Pratiwi Reno Pratiwi Ridaliani Prapansya, Onnie Ristawati, Arinda Rosmalia Nugraheni Said, Ardhia Regita Cahyani Samura, Lisa Saputra, Ade Kurniawan Septiano, Michael Shima Parameswari Adji Subandrio Subandrio Subandrio, Subandrio Suherman Dwi Nuriana Suliestyah Suliestyah, Suliestyah Sumotarto, Untung Sundari, Rita Sunny Yulia, Prayang Syamidi Patian Syamidi Patian Syarif, Iif Ahmad Taat Tri Purwiyono Tuheteru, Edy Jamal Untung Sumotarto Wastiyah, Lailatul Wayan Nanik Juliantari, Ni Wiwik Dahani Wiwik Dahani Wiwik Dahani Wiwik Dahani Wiwik Dahani wiwik dahani, wiwik Yulia, Prayang Sunny Yulianti, Ririn ‘Adany, Fildzah