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All Journal International Journal of Community Service Jurnal Abdi Masyarakat Indonesia Banua: Jurnal Kesehatan Lingkungan INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Petro : Jurnal Ilmiah Teknik Perminyakan JURNAL ABDI MASYARAKAT INDONESIA (JAMIN) Journal of Earth Energy Science, Engineering, and Technology Journal of Emerging Science and Engineering Scientific Contributions Oil and Gas
Widia Yanti, Widia
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Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering 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 Public Health Social Sciences Other

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Utilization of Solar Energy As An Environmentally Friendly Source of Electricity In Karang Taruna, Gambir District Yanti, Widia; Pratiwi, Reno; Yulia, Prayang Sunny; Fadliah, Fadliah; Pauhesti, Pauhesti; Rohman, Faiz; Istibra, M. Khair Dabit
International Journal Of Community Service Vol. 5 No. 4 (2025): November 2025 ( Indonesia - Thailand - Malaysia - Timor Leste - Philippines )
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v5i4.921

Abstract

This community service program titled "Socialization and Training on the Utilization of Solar Energy as an Environmentally Friendly Electricity Source in Karang Taruna, Gambir District" aimed to address the critical issues faced by the community due to their heavy reliance on unstable and costly fossil energy from PLN (the state-owned electricity company). The program also targeted the low understanding and practical skills related to solar energy and the underutilization of solar energy potential in urban settings. The implementation comprised two core components: socialization of solar energy and climate change impacts, and hands-on training on mini solar panel systems. Using interactive lectures, demonstrations, direct practices, and discussions, the program was conducted on March 16, 2025, involving 31 participants mainly from Karang Taruna members. A significant improvement in participants’ comprehension was observed, with average pre-test scores rising from 45 to 82, indicating an 82.22% increase. Furthermore, participant satisfaction reached 90.32%, alongside a 70.96% enhancement in practical ability to operate mini solar panel setups. Key outputs included teaching materials, posters, and scientific articles, collectively contributing toward enhanced community energy independence, reduced electricity costs, and promotion of clean energy adoption in urban areas.
Effect of LHP Nanosilica on Sandstone Wettability and Oil Recovery by Imbibition in Crude Oils with Different API Jumiati, Wiwiek; Hani, Berkah; Yanti, Widia; Sutresno, Wahyu; Wihdany, Falza Izza; Ghaziyah, Hawa Syuraih; Herlambang, Karyanto; Celli, Agli Tori; Wibowo, Gilang Saputra
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.2053

Abstract

This study investigates the influence of lipophobic–hydrophilic polysilicon (LHP) nanosilica on wettability alteration and oil recovery performance through spontaneous imbibition in initially neutral-wet sandstone. The novelty of this study lies in its systematic comparative framework using two crude oils with distinct API gravities and SARA compositions to evaluate the role of fluid–rock interactions in depth. Two crude oils with different API gravities were selected to evaluate the role of oil composition in fluid–rock interactions. Crude oil properties were characterized using SARA analysis, while imbibition tests were conducted using 5000 ppm brine and nanosilica dispersions at controlled concentrations. Wettability Index (WI) was determined using the Amott cell method, and Oil Recovery Factor (ORF) was calculated from produced oil volume. Results indicate that LHP nanosilica consistently shifts rock wettability toward more water-wet conditions. The lighter crude oil exhibits a stronger wettability response and higher recovery improvement than the heavier oil. A positive correlation between WI and ORF confirms wettability alteration as the dominant enhanced oil recovery mechanism. These findings provide a significant contribution by establishing crude oil characteristics as a key controlling factor in nanofluid EOR design, which is crucial for field applications with complex fluid variations.
Co-Authors -, Pauhesti Andry Prima Aqlyna Fattahanisa Aryanto, Reza Asri Nugrahanti, Asri Bayu Satiyawira Cahaya Rosyidan Celli, Agli Tori Chusniyah, Dina Asmaul Dini Daningrum Djoko Sulistyanto, Djoko Djunaedi Agus Wibowo Fachry Abda El Rahman Fadliah Fadliah, Fadliah Ghanima Yasmaniar Ghaziyah, Hawa Syuraih Hani, Berkah Harin Widiyatni Havidh Pramadika Henk, Alvin Herdyanti, Mixsindo Korra Herlambang, Karyanto Husla, Ridha Istibra, M. Khair Dabit Jane, Gabey Juanda, Firdaus Jumiati, Wiwiek Kashah, Muhammad Refli Lestari Said, Lestari Lumban Toruan, Michael Joshua Maman Djumantara, Maman Maulani, Mustamina Pauhesti, Pauhesti Poluan, Chris Elvano Puri Wijayanti, Puri Reno Warni Pratiwi Rini Setiati Ristawati, Arinda Riswati, Shabrina Sri Rizkina Rangga Wastu, Apriandi Rohman, Faiz Samsol Samura, Lisa Slamet . Sunny Yulia, Prayang Sutresno, Wahyu Syamsul Irham, Syamsul Timpal, Gracia Betaria Jacqueline Wastu, Apriandi Rizkina Rangga Wibowo, Gilang Saputra Wihdany, Falza Izza wiwik dahani, wiwik Yarra Sutadiwiria Yoga Pratama, Aditya Yulia, Prayang Sunny