Febianto, Naufal Arhab (2025) OPTIMALISASI PRODUKSI BIOGAS MELALUI PENAMBAHAN TRACE METALS (Mo dan Zn) DENGAN PEMANFAATAN KOTORAN SAPI, ECENG GONDOK (Eichhornia crassipes), DAN SAMPAH ORGANIK PADA DIGESTER BATCH REACTOR. Undergraduate thesis, UPN VETERAN JAWA TIMUR.
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Abstract
Biogas production offers a sustainable solution for managing organic waste while simultaneously providing a renewable and environmentally friendly energy source. This study aims to optimize biogas generation by supplementing trace metals, specifically molybdenum (Mo) and zinc (Zn), into a substrate mixture of water hyacinth (Eichhornia crassipes), fruit-based organic waste, and cow manure. The experiment utilized a batch anaerobic digestion system over a 35-day period, testing four substrate variations: control (no trace metals), Mo (5 mg/kg), Zn (5 mg/kg), and a combination of Mo+Zn (2.5 mg/kg each). Key parameters observed included biogas volume, gas pressure, methane (CH₄) content, C/N ratio, pH, temperature, and flame duration. The results indicated that trace metal supplementation, particularly the Mo+Zn combination, significantly enhanced both the volume and quality of biogas. The highest gas volume was observed on day 15 at 7479 mL with Zn addition, while the highest methane concentration resulted from the combined Mo+Zn treatment. Trace metals contributed to pH stability and accelerated the active fermentation phase. An optimal C/N ratio was also found to enhance methanogenic activity, leading to better biogas yields. These findings demonstrate that micro-nutrient enrichment effectively stimulates methanogenic bacteria and improves the anaerobic digestion efficiency of lignocellulosic and organic waste materials. This research supports the development of renewable energy strategies for both household-scale and smallindustry applications using waste as an alternative energy resource. Keywords: Biogas, Trace Metals, Molybdenum, Zinc, Water Hyacinth, Cow Manure, C/N Ratio, CH₄
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TD Environmental technology. Sanitary engineering | ||||||||
| Divisions: | Faculty of Engineering > Departement of Environmental Engineering | ||||||||
| Depositing User: | Naufa Arhab Febianto | ||||||||
| Date Deposited: | 12 Sep 2025 08:27 | ||||||||
| Last Modified: | 12 Sep 2025 08:27 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/43095 |
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