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All Journal International Journal of Research in Vocational Studies (IJRVOCAS) Mestaka: Jurnal Pengabdian Kepada Masyarakat
Fena Retyo Titani
Politeknik Negeri Sriwijaya
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Pelatihan Pembuatan Ecobrick dari Sampah Plastik untuk Mendukung Gerakan Zero Waste di Rumah Belajar Kojartis Palembang Fena Retyo Titani; Fia Dhatul Prima Kusuma; Arini Sucia
Mestaka: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 3 (2026): JUNI 2026
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/mestaka.v5i3.994

Abstract

The problem of plastic waste has become a global crisis due to its difficult to decompose naturally and the practice of burning it is hazardous to health. In response to this problem, Sriwijaya State Polytechnic together with the Kojartis Palembang Learning House community held a community service activity through Ecobrick making training as a creative solution for plastic waste management. This community service is important to equip the community at the Kojartis Palembang Learning House with innovative solutions in the form of ecobrick methods to support the zero waste movement. The method used is a participatory approach that includes theoretical counseling on waste sorting, technical training on making ecobricks with a density standard of 0.33–0.7 g/ml, and the diffusion of science and technology through the transformation of ecobricks into functional furniture. The results of the activity showed a significant increase in participant awareness, where participants who were initially unfamiliar with ecobricks are now able to process household plastic waste into useful products such as educational tables. These results conclude that ecobrick training is not just training, but also creates innovative learning media that increases students' collective awareness of environmental sustainability.
Biobattery Products from Kepok Banana Peel and Key Lime Extract Using MgSO4 and CaCl2 Electrolytes with ABC Biobattery Standards of AA Size Oloan Surya Jaya S; Sofiah; Syariful Maliki; Fena Retyo Titani; Fia Dhatul Prima Kusuma; Yuniar
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 6 No. 2 (2026): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v6i2.530

Abstract

This study aims to investigate the potential of kepok banana peel (Musa paradisiaca L.) and key lime (Citrus amblycarpa) as raw materials for biobattery production and to evaluate the effects of KOH activation concentration and the addition of the ionic salts CaCl₂ and MgSO₄ on biobattery performance. Kepok banana peel was dried, ground into powder, and chemically activated using KOH solutions with concentrations ranging from 0.2 M to 1.0 M. The electrolyte was prepared by mixing key lime extract with 15 g of either CaCl₂ or MgSO₄, followed by the addition of activated banana peel powder. The resulting electrolyte mixture was packed into empty AA battery casings to fabricate the biobattery cells. The fabricated biobatteries were evaluated for pH, output voltage, loaded voltage, and operating time using a 2.2 V LED load. The results showed that the biobattery activated with 0.6 M KOH and supplemented with MgSO₄ exhibited the best performance, producing a maximum output voltage of 3.01 V (two cells connected in series), a loaded voltage of 1.75 V, and an operating time of 10 h 31 min. In contrast, activation concentrations that were either too low (0.2 M) or too high (1.0 M) reduced biobattery performance because insufficient or excessive ions hindered the electrochemical reactions. Furthermore, MgSO₄ was more effective than CaCl₂ in improving electrolyte conductivity and ionic stability. These findings indicate that organic waste, such as kepok banana peel and key lime, has considerable potential as a raw material for environmentally friendly biobatteries.
Co-Authors Arini Sucia Fia Dhatul Prima Kusuma Oloan Surya Jaya S Sofiah Syariful Maliki Yuniar