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All Journal Bioscience Jurnal Fisika Unand Journal of Aceh Physics Society Jurnal Zarah MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Pengabdian Inovasi dan Teknologi Kepada Masyarakat JURNAL KARYA ILMIAH MULTIDISIPLIN CHEMVIRO : Jurnal Kimia dan Ilmu Lingkungan
Joni, Rahma
Universitas Lancang Kuning
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Potensi Eco-Enzyme Berbasis Limbah Kulit Buah sebagai Agen Biologis terhadap Karakteristik Fisikokimia Larutan Zat Warna Tekstil Komersil Rahma Joni; Yelmiza; Gisha Pasha Mongan; Siti Fauziah; Nova Rosita Pakpahan
Jurnal Kimia dan Ilmu Lingkungan: Chemviro Vol. 4 No. 2 (2026): Vol. 4 No. 2 (2026)
Publisher : Universitas Bojonegoro

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Abstract

Fruit peel waste is an abundant organic waste that can be utilized as a raw material for eco-enzyme production through fermentation. Eco-enzymes contain various fermentation-derived metabolites with the potential to function as environmentally friendly biological agents for wastewater treatment. This study aimed to evaluate the physicochemical characteristics of eco-enzymes produced from pineapple, orange, and papaya peels and to investigate their effects on the physicochemical characteristics of commercial textile dye solutions. Eco-enzymes were synthesized using a fruit peel, brown sugar, and water ratio of 3:1:10 (w/v) and fermented for 30 days. The eco-enzymes were characterized by measuring Total Dissolved Solids (TDS), pH, and Electrical Conductivity (EC) before and after fermentation. Subsequently, 50 mL of each eco-enzyme was added to 100 mL of commercial textile dye solution, and the mixtures were monitored for 72 hours. The results showed that fermentation reduced the pH of all eco-enzymes from 4.00 to 2.67 for pineapple peel, from 6.83 to 3.54 for orange peel, and from 5.29 to 2.82 for papaya peel. Variations in TDS and EC values indicated that the type of fruit peel influenced the physicochemical properties of the resulting eco-enzyme. Application of the eco-enzymes to commercial textile dye solutions reduced TDS values in all treatments. Orange peel eco-enzyme exhibited the highest TDS reduction efficiency, reaching 50.46% after 72 hours, followed by pineapple peel (43.39%) and papaya peel (41.62%). These findings indicate that fruit peel-derived eco-enzymes have promising potential as environmentally friendly biological agents for modifying the physicochemical characteristics of commercial textile dye solutions.
The Effect of Activated Carbon From Palm Oil Kernel Shells on Waste Cooking Oil for Soap Production Yelmiza Yelmiza; Rahma Joni; Muhamad Rokim; Hazra Yuvendius; Elvira Zondra; Arlenny Arlenny
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 8 No 1 (2026): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v8i1.527

Abstract

This study addresses the existing limitation in integrated waste valorization approaches by combining palm kernel shell–derived activated carbon production, waste cooking oil purification, and solid soap manufacturing within a UMKM-based circular economy model. Unlike previous studies that focus separately on adsorbent synthesis or oil purification, this research evaluates the adsorption performance quantitatively and links it directly to downstream soap quality. Activated carbon was synthesized via controlled pyrolysis (400 °C) followed by KOH activation (800 °C) and characterized using FTIR. The purification process reduced free fatty acid (FFA) content from 2.35 ± 0.02% to 0.43 ± 0.01%, corresponding to an adsorption efficiency of 81.7%. The adsorption capacity was calculated and statistical validation was performed in triplicate experiments. The resulting solid soap exhibited stable pH (8.89 ± 0.05) and satisfactory physical properties. These findings demonstrate the scientific and practical contribution of palm kernel shell activated carbon as a sustainable bioadsorbent supporting circular economy implementation at the UMKM scale.
Co-Authors Abdul Rahman Admin Alif Amelina Dwika Hardi Anggrena D. Ritonga Arlenny Arlenny Bustanul Arifin Elvira Zondra Emriadi - Fadilaturahmah Fadilaturahmah Filza Yulina Ade Gisha Pasha Mongan Hardi, Amelina Dwika Hazra Yuvendius Hemansyah Aziz Hermansyah Aziz ikrima asrori Marta Dinata Martala Sari Muhamad Rokim Nova Rosita Pakpahan Olly Norita Tetra Rahmi Kurniati Ritonga, Anggrena Diova Rokim, Muhamad Siti Fauziah Syukri - Syukri Syukri Wahyuni, Hanif Widya Widya, Widya Yelmiza Yoan De Nanda Herru Yola Azli Perdana