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Journal : Serambi Engineering

Potensi Produksi Biohidrogen dari Limbah Buah Naga (hylocereus polyhizus) dengan Proses Pencernaan Anaerobik Angge Dhevi Warisaura; Mukasi Wahyu Kurniawati
Jurnal Serambi Engineering Vol. 9 No. 1 (2024): Januari 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This research aims to explore the potential of dragon fruit waste as a source of biohydrogen through anaerobic fermentation. The research background highlights the urgency of renewable energy and identifies the potential for dragon fruit waste. Using experimental methods and involving dragon fruit waste and cow dung, this research includes evaluation of waste characteristics, inoculum pre-treatment, medium preparation, biohydrogen production, and analysis of results. The research results show that Total Solids (TS) has increased every day, indicating that there is still high decomposition of organic material which affects biohydrogen production. The test results showed that the TS percentage experienced a significant increase in solids content reaching 96% on the seventh day, while the VS percentage increased from 19% on the first day to 80% on the seventh day. The increase in Volatile Fatty Acid (VFA) concentration and hydrogen production on the sixth day illustrates the potential of waste as a renewable energy source. The conclusion of this research states that dragon fruit waste has the potential for biohydrogen production of 4 mL from a substrate volume of 500 mL or around 0.8%.
Potensi Limbah Media Tanam Jamur Tiram dan Jamur Merang sebagai Bahan Baku Pembuatan Kompos Organik Dhevi Warisaura, Angge; Mukasi Wahyu Kurniawati; Venditias Yudha
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The cultivation of oyster mushrooms (Pleurotus ostreatus) and straw mushrooms (Volvariella volvacea) generates large amounts of organic waste, particularly spent growing media such as baglogs and fermented straw. This study aims to evaluate the effectiveness of combining oyster mushroom baglog waste with straw mushroom cultivation residue in producing high-quality compost. he method used was aerobic composting with seven variations of mixing ratios, supplemented with goat manure and biological activators (M-21 and molasses). The observed parameters included temperature, pH, moisture content, organic carbon content, carbon-to-nitrogen ratio (C/N), and macronutrient content (N + P₂O₅ + K₂O). The results showed that the combination of oyster mushroom waste and straw mushroom waste at a 2:3 ratio produced optimal decomposition conditions, yielding the highest compost quality in accordance with the Indonesian National Standard (SNI). The resulting compost met the quality standards based on SNI 7763:2024, particularly with respect to a maximum C/N ratio of 25, a minimum organic carbon content of 15%, a minimum macronutrient content (N + P₂O₅ + K₂O) of 2%, and a stable, near-neutral pH. These findings suggest that a proportional combination of both types of mushroom waste can serve as an effective and sustainable solution for organic waste management in support of environmentally friendly agriculture.