Purnamasari, Syafta Indah (2025) Kinetika Laju Dekomposisi Limbah Sayur menggunakan MOL Jeroan Ikan dan Bonggol Pisang pada Proses Pengomposan. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Vegetable waste is one of the largest contributors to organic waste in urban areas, which has the potential to cause environmental problems. Composting is an effective solution for managing this waste, and the addition of Local Microorganism (MOL) bioactivators can accelerate the decomposition process. This study aims to analyze the comparison of compost quality, identify microorganisms and their populations in MOL, and analyze the kinetics of vegetable waste (cabbage, lettuce, mustard greens) decomposition rate using Fish Offal MOL and Banana Stem MOL at various doses (control, 15 mL, 25 mL, 50 mL) for 30 days of aerobic composting using the Takakura method. The results showed that Fish Offal MOL and Banana Stem MOL were dominated by Bacillus spp., but Fish Offal MOL also contained Lactobacillus spp.. The microorganism population in Fish Offal MOL (4 x 10³ CFU/mL at a dilution of 10⁻³) was higher than that in Banana Stem MOL (3 x 10³ CFU/mL at a dilution of 10⁻³). Compost quality analysis showed that the time factor had a very significant effect on pH, temperature, moisture content, C/N ratio, color, odor, and texture of the compost. Meanwhile, the type of activator and its dosage significantly affect moisture content and C/N ratio. A higher MOL dosage (50 mL) tends to accelerate the decrease in C/N ratio until it reaches the ideal range (10-20) at the end of composting. The physical quality of the compost (black color, earthy odor, smooth texture) also improves over time and meets. Meanwhile, the type of activator and its dosage significantly affect moisture content and C/N ratio. Higher MOL dosage (50 mL) tends to accelerate the decrease in C/N ratio until it reaches the ideal range (10-20) at the end of composting. The physical quality of the compost (black color, earthy smell, smooth texture) also improved over time and met the SNI 19-7030-2004 standard. Analysis of the C/N ratio decomposition rate kinetics showed that the first-order model was most appropriate with the highest R² value, indicating that the decomposition rate was directly proportional to the remaining substrate concentration.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | S Agriculture > S Agriculture (General) > S631-667 Fertilizers and Improvement of the soil T Technology > TD Environmental technology. Sanitary engineering |
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| Divisions: | Faculty of Engineering > Departement of Environmental Engineering | ||||||||
| Depositing User: | Syafta Indah Purnamasari | ||||||||
| Date Deposited: | 04 Dec 2025 08:05 | ||||||||
| Last Modified: | 04 Dec 2025 08:05 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/47705 |
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