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All Journal Jurnal Teknik ITS Jurnal Sains dan Seni ITS IPTEK The Journal for Technology and Science Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Kimia Riset Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Journal of Petroleum and Geothermal Technology ARMATUR : Artikel Teknik Mesin dan Manufaktur Journal of Earth Energy Science, Engineering, and Technology Jurnal Pengabdian Masyarakat Kesosi Jurnal Ilmu Kedokteran dan Kesehatan Indonesia
Randy Yusuf Kurniawan
Department Oil And Gas Engineering, Faculty Of Industrial Technology, Institut Teknologi Sumatera, Jl. Terusan Ryacudu, Way Hui, Jati Agung, Lampung Selatan 35365, Lampung, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Neuroscience Nursing Public Health

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Enhanced Methane Adsorption Using Zeolite-A Derived from Coal Bottom Ash Supported with Activated Pineapple Leaf Fiber Randy Yusuf Kurniawan; Dwi Miftha Kurnia; Martasari Beti Pangestuti; Efraim Eleizer Manurung; Taufik Qodar Romadiansyah
Jurnal Kimia Riset Vol. 11 No. 1 (2026): June
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkimris.v11i1.89578

Abstract

The present work evaluates the influence of mineral purification and zeolite formation from coal bottom ash (ZAB) on methane adsorption behavior, including the effect of incorporating KOH-treated pineapple leaf fibers as a supporting matrix (ZAB-X). ZAB was synthesized hydrothermally from Si and Al extracts from bottom ash through a smelting process at 650°C. Meanwhile, in the ZAB-X sample, pineapple leaf fibers were first activated by soaking in a 4 M KOH solution for 20 hours before being added to the zeolite slurry. Coal bottom ash was characterized using XRF and XRD to determine mineral content and phase, ICP-AES to determine the concentration of Si and Al extracts from the smelting results, while ZAB and ZAB-X solids were characterized using XRD and SEM to analyze morphology. The results of methane gas adsorption capacity under ambient conditions, specifically at 29 °C and under the applied pressure conditions, showed that ZAB-X had the highest capacity value of 7.75% by weight, followed by ZAB, BA after Fe and Ca Treatment, and BA, which were 4.69%, 2.34%, and 1.33%. The enhanced adsorption performance of ZAB-X was attributed to the formation of well-distributed zeolite crystals on the activated fiber surface, reduced particle agglomeration, and improved pore accessibility, which collectively promoted stronger methane confinement within the adsorbent structure. The obtained results indicate that aluminosilicate materials derived from industrial waste possess promising potential for sustainable methane capture applications.
Impact of Reservoir Horizontal Permeability Vertical Distribution on Recovery Efficiency Based on Deepwater Massive Sands Azman Munthoha Maula; Tsani Sabila; Putri Agustryani; Friska Hasugian; Dwi Miftha Kurnia; Randy Yusuf Kurniawan; Rozi Afdi
Journal of Petroleum and Geothermal Technology Vol. 7 No. 1 (2026): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v7i1.16798

Abstract

The influence of Deep-Water Massive Sands (DWMS) internal architecture on hydrocarbon recovery remains an area of ambiguity. This research endeavor aimed to elucidate the bed-scale ramifications of the vertical distribution of horizontal permeability, as determined from documented DWMS outcrop sedimentological analyses, on hydrocarbon recovery and sweep efficiency. This was achieved through the application of numerical waterflood simulations. Model construction leveraged outcrop textural parameters, including grain size, sorting, and orientation, in conjunction with analogous turbidite petrophysical subsurface data. The observed outcomes from four simulated heterogeneous cases revealed distinct trends in recovery efficiency, with variations up to 10%. These trends were attributable to the efficiency of water sweep and the interactive effects of vertical permeability heterogeneity, gravitational forces, and viscous forces. Specifically, the most stable, piston-like water sweep efficiency was associated with coarsening-upward permeability trends, followed by intermediate sweep efficiencies in anomalous and ungraded DWMS trends, and finally, the most unstable sweep efficiency in idealized trends.
Analisis Deskriptif Durasi dan Jumlah Konsumsi Rokok, Kadar Hemoglobin dan Tingkat Pengetahuan Bahaya Karbon Monoksida pada Petugas Kebersihan Jalan Aulia Mutiara Hikmah; Zahara Fadilla; Randy Yusuf Kurniawan; Yuri Pradika; Gita Wideani
Jurnal Ilmu Kedokteran dan Kesehatan Indonesia Vol. 5 No. 1 (2025): Maret : Jurnal Ilmu Kedokteran dan Kesehatan Indonesia
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jikki.v5i1.6629

Abstract

This study explores the relationship between smoking habits, hemoglobin levels, and awareness of carbon monoxide (CO) risks among street cleaning workers. Smoking is one of the most common sources of CO exposure, which can bind to hemoglobin and reduce oxygen transport in the body. A total of 67 street cleaning workers in West Jakarta were involved in this research, using a descriptive analytic approach. Data were collected through blood tests for hemoglobin levels, as well as interviews and questionnaires to assess smoking habits and knowledge of CO. The findings show that most respondents were light smokers (1–10 cigarettes per day), and 43% had been smoking for less than five years. While 66% of participants had normal hemoglobin levels, 33% had elevated levels, which may reflect the body’s response to reduced oxygen availability. Interestingly, 70% of respondents were aware of the health risks of CO, but knowledge tended to decline among long-term or heavy smokers. This indicates a gap between behavior and risk awareness. The study highlights the need for ongoing health education targeted at outdoor workers to increase understanding of CO exposure and prevent potential health impacts.
SOSIALISASI PENGENALAN DUNIA MIGAS DAN POTENSINYA DI KAWASAN LAMPUNG PADA SISWA SMA Randy Yusuf Kurniawan; Aulia Mutiara Hikmah; Dwi Miftha Kurnia; Andri Yadi Paembonan; Stevy Canny Louhenapessy; Putri Agustryani; Meta Nisrina Syafitri; Martasari Beti Pangestuti; Azman Munthoha Maula
Jurnal Pengabdian Masyarakat Kesosi Vol. 8 No. 2 (2025): Juli: Jurnal Abdimas KESOSI
Publisher : Sekolah Tinggi Ilmu Kesehatan Kesetiakawanan Sosial Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57213/abdimas.v8i2.301

Abstract

Kegiatan Pengabdian kepada Masyarakat (PkM) ini bertujuan untuk meningkatkan pemahaman siswa terhadap industri minyak dan gas bumi (migas), serta mengenalkan potensi sumber daya migas di wilayah Lampung. Kegiatan dilaksanakan melalui sosialisasi kepada siswa SMA Negeri 14 Bandar Lampung, dengan penyampaian materi mencakup pengenalan sektor migas secara umum, asal-usul migas, tahapan kegiatan industri migas dari hulu (upstream) hingga hilir (downstream), serta mata kuliah dan kompetensi lulusan program studi teknik perminyakan. Selain itu, disampaikan pula informasi mengenai peluang karir di sektor migas. Acara dibuka oleh perwakilan pihak sekolah dan dilanjutkan dengan pemaparan materi oleh tim pelaksana. Siswa menunjukkan partisipasi aktif dalam diskusi dan sesi tanya jawab, yang memperkuat pemahaman mereka mengenai proses eksplorasi, produksi, hingga distribusi migas. Hasil evaluasi melalui kuesioner menunjukkan bahwa mayoritas siswa merasa terdorong untuk mendalami sektor migas dan mempertimbangkannya sebagai pilihan karir di masa depan. Dokumentasi kegiatan berupa foto, video, dan salinan materi presentasi digunakan sebagai bahan evaluasi dan pengembangan kegiatan serupa di masa mendatang.
PEMETAAN CEKUNGAN AIR TANAH DENGAN METODE RESISTIVITY UNTUK MENENTUKAN SUMBER AIR TANAH DI WILAYAH TANGGAMUS PEKON SUKA AGUNG Dwi Miftha Kurnia; Randy Yusuf Kurniawan; Stevy Canny Louhenapessy; Andri Yadi Paembonan; Putri Agustryani; Azman Munthoha Maula; Ummi Kulsum Hidayati
Jurnal Pengabdian Masyarakat Kesosi Vol. 8 No. 2 (2025): Juli: Jurnal Abdimas KESOSI
Publisher : Sekolah Tinggi Ilmu Kesehatan Kesetiakawanan Sosial Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57213/abdimas.v8i2.302

Abstract

Air memiliki peran penting bagi kehidupan makhluk hidup, termasuk manusia, yang memanfaatkannya untuk berbagai keperluan sehari-hari. Sumber air yang sering digunakan masyarakat meliputi air permukaan (sungai, waduk, rawa), air tanah, dan air hujan. Namun, seiring meningkatnya populasi dan kerusakan lingkungan, ketersediaan air bersih dari sumber air permukaan semakin menurun akibat polusi, penggunaan berlebihan, jarak ke sumber air yang jauh, dan kekeringan. Untuk mengatasi krisis air bersih, berbagai langkah dapat dilakukan, seperti memperbaiki infrastruktur, memanfaatkan air tanah, menggunakan teknologi modern, membangun sistem tadah hujan, serta meningkatkan kesadaran masyarakat. Salah satu solusi utama adalah memanfaatkan air tanah, sumber air tawar terbesar, dengan memahami zona akuifer yang mengandung air. Meski identifikasi zona akuifer sulit karena kondisi geologi kompleks, metode geofisika, seperti resistivitas listrik, telah membantu ahli hidrogeologi dalam menentukan kedalaman, ketebalan, dan persebaran akuifer untuk mendukung pemanfaatan air tanah secara efektif. Metode geolistrik resistivitas adalah salah satu metode geofisika yang digunakan untuk memetakan struktur bawah permukaan dengan mengukur variasi resistivitas batuan. Variasi ini dipengaruhi oleh perbedaan sifat kelistrikan material di bawah permukaan, yang berguna untuk mengidentifikasi anomali geologi seperti lapisan akuifer, zona patahan, atau struktur batuan yang dapat menandakan adanya potensi air tanah atau kondisi geologi tertentu. Di wilayah Pekon Suka Agung, Kecamatan Pugung, Kabupaten Tanggamus, metode geolistrik resistivitas dapat digunakan untuk menganalisis karakteristik geologi bawah permukaan. Pengukuran resistivitas dilakukan dengan menggunakan alat resistivitymeter yang mendeteksi perbedaan nilai tahanan jenis dari satu titik ke titik lainnya. Anomali resistivitas kemudian dianalisis untuk mengidentifikasi struktur geologi di bawah permukaan dan potensi keberadaan air tanah.
Co-Authors Andri Yadi Paembonan Andri Yadi Paembonan Aulia Mutiara Hikmah Aulia Mutiara Hikmah Auliya Putri Hardiyani Azman Munthoha Maula Azman Munthoha Maula Bagastyo, Arseto Yekti Cavendish, Amedeo Dwi Miftha Kurnia Dwi Miftha Kurnia Dwi Miftha Kurnia Dwi Miftha Kurnia Dwi Miftha Kurnia Efraim Eleizer Manurung Farid Nanda Syanur Fitri Rusmaladewi Friska Hasugian Gita Wideani Hendrawan, Rezki Naufan Irsandi Dwi Oka Kurniawan Irsandi Dwi Oka Kurniawan Ismail Haris Setiawan Jatmiko Eko Witoyo Junanta Junanta Kurnia, Dwi Miftha Lukman Atmaja Martasari Beti Pangestuti Martasari Beti Pangestuti Meta Nisrina Syafitri Muhammad Rifqi Dwi Septian MUHAMMAD RIFQI DWI SEPTIAN Nafiah Afuw Rouf Nurul - Widiastuti Pangestuti, Martasari Beti Pradeha Bnesari Fitrah Lanharto Putri Agustryani Putri Agustryani Rikki Nababan Rozi Afdi Rusmaladewi, Fitri Setiadi Wira Buana Shofiyani, Anis Stevy Canny Louhenapessy Stevy Canny Louhenapessy Stevy Canny Louhennapessy Taufik Qodar Romadiansyah Tsani Sabila Ummi Kulsum Hidayati Ummi Kulsum Hidayati Wahida Annisa Ermadayanti Yasokhi Fatkhasari Yuri Pradika Zahara Fadilla