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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Kartika Kimia Journal of Applied Engineering and Technological Science (JAETS) INTEGRITAS : Jurnal Pengabdian Jurnal Abdi Insani Jurnal Rekayasa Energi dan Mekanika International Journal of Science and Society (IJSOC) Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Pengabdian Pada Masyarakat Jurnal Polimesin Indonesian Journal of Humanities and Social Sciences
Selly Septianissa
Department Of Mechanical Engineering, Faculty Of Engineering, Widyatama University, Bandung 40125, Indonesia
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Enhancing Corrosion Resistance of AISI 1045 Carbon Steel Using Rosmarinus officinalis Extract: An Environmentally Friendly Approach Pawawoi, Pawawoi; Putra, Adi Ganda; Lesmana, Dera; Prajitno, Djoko Hadi; Septianissa, Selly
Jurnal Kartika Kimia Vol 8 No 2 (2025): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v8i2.976

Abstract

Corrosion is the greatest challenge faced by various industries, especially those in maritime regions. This study evaluates the effectiveness of Rosmarinus officinalis extract as a corrosion inhibitor for carbon steel AISI 1045 in artificial seawater. Steel samples with varying inhibitor concentrations (0, 30, 60, 90, and 120 ppm) were immersed for 25 days. The results indicate that the weight gain due to corrosion for the sample without an inhibitor reached 79.5 mg, while the use of rosemary significantly reduced the weight gain, with the lowest corrosion rates recorded at 90 ppm (0.003 mpy) and 120 ppm (0.005 mpy). The optimal inhibitor efficiency was achieved at 60 ppm (75.57%). Microstructural analysis showed a decrease in pitting corrosion thickness and the formation of a new phase, Fe₃O₄, which is more stable and protective. These findings emphasize the potential of rosemary extract as an environmentally friendly solution for controlling corrosion in carbon steel, particularly in corrosive environments like seawater.
Investigation of Drying Time and Final Moisture Content of Arabica beans in a Solar Drying Chamber Rendi Ramdhani; Selly Septianissa; Ahmad Rajani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 6 (2025): December 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i6.2239-2249

Abstract

Drying is a critical stage that affect directly the quality, storability, and market value of Arabica coffee beans. The objective of this study was to investigate the performance of a solar drying chamber integrated with a thermal collector and phase change material (PCM), operated under a constant airflow velocity of 9.2 m/s. Arabica beans of 1500 g were dried over two observation days, with chamber temperatures ranging from 40 °C to 46.5 °C and peak solar radiation of 1122 W/m². The results showed that the system effectively maintained thermal stability and drying performance despite fluctuations in solar input. The analysis revealed at Day 2 achieved a higher and faster moisture reduction due to improved solar conditions and absorber efficiency, with drying rates peaking at over 42 g vapor per hour in the third hour. In contrast, at Day 1 the drying rate peaked in the third hour at approximately 22.45 g vapor/h. Day 1 exhibited a more stable but slower drying trend. Overall, the system successfully reduced the beans’ moisture content to below 12.8% in within under 14 hours, with Tray 2 delivering the most consistent results. These findings demonstrate that the integration of solar thermal energy, PCM, and forced convection application significantly improved drying efficiency and reliability, offering a sustainable alternative for post-harvest processing, especially in regions with variable weather conditions.
Implementasi Sistem Pompa Air Terintegrasi untuk Distribusi Air Bersih Berkelanjutan di KB Daarul Amal Sofia, Evi; Chandrasari, Ayu Zahra; Suryaman, Nia Nuraeni; Septianissa, Selly; Komarudin, Udin; Martoni, Martoni
INTEGRITAS : Jurnal Pengabdian Vol 10 No 1 (2026): JANUARI - JULI
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat - Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/integritas.v10i1.7069

Abstract

Kegiatan pengabdian ini merupakan kelanjutan dari program optimalisasi kualitas air melalui sistem filtrasi di KOBER Daarul Amal. Meskipun kualitas air telah meningkat, distribusi air bersih masih dilakukan secara manual dan tidak efisien. Oleh karena itu, tim melaksanakan pengembangan sistem distribusi berbasis pompa terintegrasi untuk mendukung sanitasi dan kesehatan anak-anak. Metode pelaksanaan meliputi identifikasi kebutuhan, instalasi dan perbaikan pompa, pelatihan mitra serta evaluasi teknis dan sosial. Hasilnya menunjukkan peningkatan akses air bersih di titik-titik vital serta peningkatan kapasitas mitra dalam pengelolaan sistem air bersih. Selain itu hasil kuisioner yang diberikan kepada para guru di KOBER Daarul Amal menunjukan hasil yang baik, semua responden menyatakan sangat terbantu dengan program PKM yang dilaksanakan oleh Jurusan Teknik Mesin Universitas Widyatama. Program ini mendukung pencapaian SDGs 3, 4, 6, dan 17.
Co-Authors Adi Ganda Putra Ahmad Rajani Ahmad Rajani Ayu Zahra Chandrasari Djoko Hadi Prajitno Hadining, Wanidya Ni’immallaili Hilman Mafazi Komang Widhi Widantha Komarudin, Udin Lesmana, Dera Martoni Muhamad Waldi Nugraha, Suhud Pawawoi, Pawawoi Prasetia, Adhita R Evi Sovia Rendi Ramdhani Suryaman, Nia Nuraeni Trisnawan , Lukman Waldi, Muhamad Zanika, Sugih Yusuf