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All Journal Al-Kimia Fullerene Journal of Chemistry Magnetic: Research Journal of Physics and It’s Application Al-Khidmah Jurnal Pengabdian Masyarakat
Pebriyanto, Yunus
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Religion Humanities Astronomy Chemistry Decision Sciences, Operations Research & Management Languange, Linguistic, Communication & Media Physics Social Sciences

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The Potential of Jackfruit Wood as Activated Carbon for Adsorption of Heavy Metal Mercury (Hg) through Pyrolysis Method Zimon Pereiz; Chuchita; Oksal, Efriyana; Maya Sylvani, Miranti; Irawan, Ahmad; Pebriyanto, Yunus; Hairiah, Rusliananur; Eka Jaya Prastiti, Arini; Berlisnora Dasilva, Caroline; Anatasya, Violina; Prisnanda, Risky
Al-Kimia Vol 13 No 1 (2025): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Water pollution caused by heavy metal mercury is a serious problem today. This study aims to utilise jackfruit wood waste as a natural adsorbent in overcoming the problem of water pollution due to heavy metal mercury. The methods in this research include jackfruit wood preparation, hydrochar synthesis through pyrolysis, hydrochar activation, wastewater preparation, batch adsorbent optimum conditions, and dynamic adsorption process (Fixed-Bed Column). The results showed that the optimum adsorption condition was reached at 0.4 M HCl concentration, pH 3 and 80minutes contact time. The study also showed that the adsorption kinetics followed a second-order pseudo model with a rate constant of 1.712 x 10-2 g/mg.min. The research data also showed conformity with the Langmuir isotherm model, with an adsorption capacity of 63.036 mg/g. The results of this study prove that jackfruit wood waste is effectively used as raw material for making activated carbon for wastewater treatment applications in removing heavy metal mercury.
Implementasi Sistem PLTS untuk Kebutuhan Listrik Pelaku Usaha Ternak Ikan Toman Rahayu Basani, Yuniarta; Pebriyanto, Yunus; Decenly, Decenly
Al-Khidmah Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2026): JANUARI-APRIL
Publisher : Institute for Research and Community Service (LPPM) of the Islamic University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56013/jak.v6i1.5090

Abstract

Limited access to electricity remains a major challenge for fisheries enterprises located in remote areas, including Ternak Ikan Toman Rahayu, which operates floating cages along the Pager River in Palangka Raya. This condition reduces operational efficiency and productivity due to the absence of a reliable power supply. Therefore, this community service program aimed to implement an off-grid Solar Power System (PLTS) as a sustainable and independent energy solution. The implementation method consisted of field observation and needs assessment, installation of the off-grid PLTS, training on system operation and maintenance, and evaluation through in-depth interviews. The results indicate that the implemented PLTS successfully provides a stable electricity supply for lighting and work equipment, while also enhancing the partner’s knowledge and independence in managing renewable energy systems. The off-grid PLTS implementation effectively supports business sustainability and promotes the utilization of renewable energy within the community.
Rancang Bangun Prototipe Sistem Pencitraan Bawah Tanah dengan Metode Electrical Resistence Tomography Pebriyanto, Yunus; Wilson Jefriyanto; Yoan Theasy; Yunita Enzelina Silaban; Salsa Ayudhia Pratama
Magnetic: Research Journal of Physics and It’s Application Vol. 6 No. 1 (2026): Magnetic: Research Journal of Physics and It’s Application
Publisher : Program Studi Fisika - Universitas San Pedro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59632/magnetic.v6i1.755

Abstract

Electrical Resistivity Tomography (ERT) is a geophysical method used to image subsurface structures based on the distribution of material resistivity by injecting electrical current and measuring the resulting potential at the surface. Although widely applied in subsurface exploration, the use of ERT in academic environments is still limited due to the high cost of commercial equipment. Therefore, this study aims to design and develop a laboratory-scale prototype of a subsurface imaging system based on the ERT method as an educational and practical learning tool. The research employed a Research and Development (R&D) method combined with an experimental approach, including the stages of design, fabrication, testing, and calibration of the prototype. Experimental measurements were conducted on homogeneous soil media and soil media with artificial anomalies using Wenner and Wenner–Schlumberger configurations. The acquired data were processed using RES2DINV software to produce two-dimensional subsurface images. The results indicate that the developed prototype is capable of detecting resistivity anomalies effectively, although relatively high inversion errors were observed due to laboratory-scale limitations. Overall, the proposed ERT prototype is suitable as a supporting tool for geoelectrical learning and subsurface exploration practicum.
Adsorption of Heavy Metal Mercury (Hg) Using Meranti Wood as Activated Carbon Pereiz, Zimon; Chuchita, Chuchita; Oksal, Efriyana; Sylvani, Miranti Maya; Pebriyanto, Yunus; Turnip, Oktaviani Naulita; Irawan, Ahmad
Jurnal Kimia Fullerene Vol 11 No 1: Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v11i1.712

Abstract

The objective of this research is to assess the adsorption capacity of activated carbon derived from meranti wood (Shore spp) for mercury (Hg) removal from liquid waste. To establish the relationship between concentration and absorbance, the method employed involves calibrating mercury concentration using calibration curves. Additionally, the effects of pH and exposure time on adsorption capacity were examined. The results indicate that activated carbon from meranti wood can significantly adsorb mercury, achieving an efficiency level of 97.610% at pH 3, with adsorption stability reached within 80 minutes at an adsorption rate of 94.30%. The conclusions drawn from this study suggest that activated carbon from meranti wood is a sustainable and effective solution for addressing mercury contamination in wastewater. It also highlights the importance of regulating pH and exposure time. This research contributes significantly to the development of environmentally friendly methods for water purification.
Co-Authors Ahmad Irawan, Ahmad Anatasya, Violina Basani, Yuniarta Berlisnora Dasilva, Caroline Chuchita Chuchita, Chuchita Decenly, Decenly Eka Jaya Prastiti, Arini Hairiah, Rusliananur Maya Sylvani, Miranti Oksal, Efriyana Prisnanda, Risky Salsa Ayudhia Pratama Sylvani, Miranti Maya Theasy, Yoan Turnip, Oktaviani Naulita Wilson Jefriyanto Yunita Enzelina Silaban Zimon Pereiz