Putri, Boanita Susanto (2026) Potensi Bioenergi Frass Larva Black Soldier Fly (Hermetia illucens) Berdasarkan Variasi Jenis Limbah Organik melalui Proses Anaerobic Digestion (AD). Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pengelolaan limbah organik secara berkelanjutan menjadi tantangan utama dalam upaya mitigasi dampak lingkungan dan transisi menuju energi terbarukan. Salah satu pendekatan inovatif yang berkembang saat ini adalah pemanfaatan larva Black Soldier Fly (BSFL, Hermetia illucens) sebagai agen biokonversi limbah organik. Selain menghasilkan biomassa larva, proses ini juga menghasilkan residu berupa frass, yang berpotensi sebagai substrat dalam proses anaerobic digestion (AD) untuk menghasilkan biogas. Penelitian ini bertujuan untuk menganalisis potensi bioenergi frass BSF melalui anaerobic digestion (AD) dengan varisi jenis limbah organik dan jenis co-digesti. Substrat frass diperoleh dari dua sumber, yaitu biokonversi larva BSF yang diberi pakan nasi berasal dari PU Wiyung dan frass dengan pakan limbah organik domestik berasal dari TPS 3R Jambangan. Masing-masing frass dikombinasikan dengan dua jenis co-digesti, yaitu ampas tahu (AT) dan kotoran sapi (KS), dengan rasio campuran 2:1, 3:1, dan 4:1. Proses AD dilakukan selama 30 hari menggunakan sistem batch tertutup dengan volume kerja ± 70%. Hasil penelitian menunjukkan bahwa frass yang berasal dari limbah organik domestik menghasilkan kinerja AD dan potensi biogas yang lebih tinggi dibandingkan frass dari limbah nasi. Co-digesti frass dengan kotoran sapi memberikan proses degradasi yang lebih baik dibandingkan dengan ampas tahu. Hal tersebut dipengaruhi oleh peran kotoran sapi sebagai penyangga pH dan sumber mikroorganisme, meskipun proses degradasi sangat dipengaruhi oleh konsentrasi amonia sebagai inhibitor pada AD. Kondisi optimum dicapai pada variasi R10 (frass limbah domestik + kotoran sapi), yang menunjukkan kinerja terbaik dengan penurunan COD tertinggi sebesar 99,28%, penurunan TOC mencapai 98,17%, serta rasio C/N akhir mendekati kondisi optimum untuk produksi biogas.
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Sustainable organic waste management remains a major challenge in mitigating environmental impacts and supporting the transition toward renewable energy. One innovative approach that has recently gained attention is the utilization of Black Soldier Fly larvae (BSFL, Hermetia illucens) as bioconversion agents for organic waste. In addition to producing larval biomass, this process generates a residual by-product known as frass, which has potential as a substrate for anaerobic digestion (AD) to produce biogas. This study aims to analyze the bioenergy potential of BSF frass through anaerobic digestion (AD) with variations in organic waste types and co-digestion materials.Frass substrates were obtained from two sources: BSF larvae fed with rice waste from PU Wiyung and BSF larvae fed with domestic organic waste from the TPS 3R Jambangan. Each frass type was combined with two co-digestion materials, namely tofu waste and cow manure, at mixing ratios of 2:1, 3:1, and 4:1. The anaerobic digestion process was conducted for 30 days using a closed batch system with a working volume of approximately 70%.The results showed that frass derived fron domestik organic waste exhibited higher AD performance and biogas potenstial compared to frass derived from rice waste. Co-digestion of frass with cow manure resulted in more effective degradation than co-digestion with tofu waste. This improvement was attributed to the role of cow manure as a pH buffer and a source of microorganisms, althoughthe degradation process was strongly influenced by ammonia concentration as an inhibitor in AD. Optimal condition wre avhieved in variation R10 (domestik organic waste frass combined with cow manure), which demonstrated the best performance, with the higest COD reduction of 99.28%, TOC reduction of 98.17% and a final C/N rasio approaching the optimal range for biogas production.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | anaerobic digestion (AD), biogas, co-digesti, energi terbarukan, frass, Hermetia illucens. anaerobic digestion (AD), biogas, co-digestion, frass, Hermetia illucens, renewable energy. |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD195.B56 Biomass energy T Technology > TD Environmental technology. Sanitary engineering > TD756.45 Anaerobic treatment T Technology > TD Environmental technology. Sanitary engineering > TD796.5 Composting |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25101-(S2) Master Thesis |
| Depositing User: | Boanita Susanto Putri |
| Date Deposited: | 26 Jan 2026 07:39 |
| Last Modified: | 26 Jan 2026 07:39 |
| URI: | http://repository.its.ac.id/id/eprint/130431 |
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