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All Journal Journal of Physics and Its Applications Journal of Energy, Material, and Instrumentation Technology JURNAL HUTAN TROPIS TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Alfajrin, Achmad Chalid Afif
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Astronomy Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics Other

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Penerapan Teknologi Budidaya Ikan dalam Ember (BUDIKDAMBER) Berbasis Internet of Things (IoT) Pertiwi, Kisna; Afriansyah, Aidil; sabar, sabar; Alfajrin, Achmad Chalid Afif; Mufidah, Zunanik
TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Vol 4 No 1 (2024): TEKNOKREATIF : Jurnal Pengabdian kepada Masyarakat Volume 4 No 1
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M), Institut Teknologi Sumatera, Lampung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/teknokreatif.v4i1.1660

Abstract

This community service aims to introduce and apply fish farming technology in buckets (BUDIKDAMBER) based on the Internet of Things (IoT) as a learning medium for basic instrumentation control systems. By utilizing IoT technology, this training not only increases efficiency in fish farming, but also provides teachers with a better understanding of basic instrumentation control systems. The results of the analysis have shown that there has been a 24% increase in participants' knowledge in the field of Budikdamber, from 63% to 87%. The aim of implementing this technology certainly indicates an increase in teachers' insight regarding the application of Fish Cultivation technology in buckets based on the internet of things, from those who initially did not understand to understand well
ANALISIS KONDISI HUTAN MANGROVE DAN POTENSI SERAPAN KARBON MENGGUNAKAN DATA SENTINEL-2 DI KABUPATEN PESAWARAN Adirama, Alfian Zamsami; Permana, Rizki Dimas; Alfajrin, Achmad Chalid Afif; Dwiputra, Mohamad Ashari; Widiya, Nanda; Dakhi, Sakti Vincensius Sozanolo; Destina, Weni Fira
Jurnal Hutan Tropis Vol 12, No 3 (2024): Jurnal Hutan Tropis Volume 12 Nomer 3 Edisi September 2024
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v12i3.20553

Abstract

Climate change and global warming continue to occur up to the present. One of the gases significantly influencing climate change is carbon dioxide (CO2). The increase in CO2 can be mitigated by capturing carbon from the atmosphere and storing it in biomass in a process known as carbon sequestration. Forests play a crucial role as a mitigator in reducing global warming and climate change, acting as both a carbon sink and absorber. Mangrove forests, in particular have a high capacity for carbon storage, approximately three times more than terrestrial forests. This research aims to (1) assess the health condition of the mangrove forests in Pesawaran Regency and (2) estimate the CO2 absorption produced by Pesawaran Regency. The study utilizes Sentinel-2 satellite imagery and field data collection. Sentinel-2 images undergo Normalized Difference Vegetation Index (NDVI) transformation. The research results indicate that the mangrove forests in Pesawaran Regency in 2023 are predominantly in good condition, covering an area of 562,31 hectares (99%), while 6,12 hectares (1%) are in a degraded condition. The CO2 absorption by the mangrove forests pesawaran regency is estimated to be 336.367,47 tons CO2  and 591,75 tons CO2/ha.
Effect of Corona Plasma Radiation on the Contact Angle and Wettability of Bamboo Surface Alfajrin, Achmad Chalid Afif; Muhlisin, Zaenul; Komariah, Rahma Nur; Putra, Bintang Ridzky Ranindra; Nazuwatussya'diyah, Nazuwatussya'diyah; Arzi, Yudha Hamdi; Mardhiyatna, Mardhiyatna; Sari, Rizki Yustisia
Journal of Energy, Material, and Instrumentation Technology Vol 6 No 2 (2025): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v6i2.294

Abstract

Bamboo is a widely utilized non-timber forest product, often innovated into laminated boards, particle boards, and plywood. The outer bamboo surface (skin) possesses high compressive strength but exhibits hydrophobic properties, limiting its wettability toward liquids. Plasma corona technology, operating at atmospheric pressure and using surrounding gases at a relatively low cost, offers a promising solution to modify bamboo surfaces by increasing their surface energy. This study aimed to analyze the hydrophilic resistance and wettability of bamboo surfaces treated with plasma corona, measured through contact angle analysis. The direct drop method was employed by dripping water and phenol formaldehyde (PF) fluids onto bamboo surfaces treated with plasma corona. Contact angle measurements were performed using ImageJ drop analysis software. Results demonstrated that plasma corona treatment significantly reduced contact angle values, improving surface wettability. Untreated bamboo surfaces showed contact angles of 72.7° for water and 111.5° for PF fluids, indicating limited wettability. Post-treatment, the contact angles decreased to less than 30° for water and below 90° for PF, signifying enhanced wettability. However, the hydrophilic properties were found to be non-permanent, with contact angle values gradually increasing over 13 days of observation. Among the tested parameters, plasma corona treatment with a current strength of 75 mA for 5 minutes provided the most optimal wettability improvement for water and PF fluids. This study highlights the effectiveness of plasma corona in enhancing bamboo surface wettability, making it more suitable for applications requiring adhesive bonding or fluid spreading in industrial processes.
Electrokinetic Remediation Treatment of Chromium (Cr) Concentration and Distribution in Soil from the PT Semen Baturaja Cement Factory Environment Alfajrin, Achmad Chalid Afif; Komariah, Rahma Nur; Prasetia, Hendra; Halid, Muhammad Akmal; Aisyara, Arien; Simatupang, Lamtongam; Ghifari, Hamzah Daffa; Widiatama, Angga Jati; Arham, La Ode; Mukti, Aqil Chandra; Ningsih, Dina Widya; Ferdinan, Muhammad Rizky
Journal of Physics and Its Applications Vol 7, No 3 (2025): August 2025
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v7i3.25377

Abstract

PT Semen Baturaja, a cement production company in South Sumatra, Indonesia, holds a Mining Business License of 103.4 hectares, of which 64.23% was reclaimed during 2017–2021. However, the revegetation success rate remains low at only 9%, potentially due to excessive soil chromium (Cr) accumulation. This study investigates the application of electrokinetic remediation to reduce Cr concentrations and improve soil conditions for revegetation. The experiment was conducted on soil samples collected from Disposal Area 4 of PT Semen Baturaja, using a laboratory-scale setup with copper electrodes powered by a 20 V direct current, applied continuously for 48 hours. The results showed that Cr ions tend to migrate toward the anode due to electromigration, while redox reactions influence Cr distribution over time. The highest treatment efficiency was observed in segment one (11.123%), and the lowest in segment three (1.651%). These findings demonstrate the potential of electrokinetic remediation as a viable method for enhancing revegetation in Cr-contaminated post-mining soils.
Co-Authors Adirama, Alfian Zamsami Afriansyah, Aidil Aisyara, Arien Arham, La Ode Arzi, Yudha Hamdi Dakhi, Sakti Vincensius Sozanolo Destina, Weni Fira Dwiputra, Mohamad Ashari Ferdinan, Muhammad Rizky Ghifari, Hamzah Daffa Halid, Muhammad Akmal Hendra Prasetia Kisna Pertiwi, Kisna Komariah, Rahma Nur Mardhiyatna, Mardhiyatna Mufidah, Zunanik Mukti, Aqil Chandra Nazuwatussya'diyah, Nazuwatussya'diyah Ningsih, Dina Widya Permana, Rizki Dimas Putra, Bintang Ridzky Ranindra Sabar Sabar Sari, Rizki Yustisia Simatupang, Lamtongam Widiatama, Angga Jati Widiya, Nanda Zaenul Muhlisin