Kurniawan, Rizky and Padmasari, Ike Pramudia Galuh (2026) Pemanfaatan Distillery Spent Wash untuk Produksi Biogas Menggunakan Plug Flow Anaerobic Digester. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Distillery Spent Wash (DSW) merupakan limbah cair utama dari industri bioetanol yang memiliki kandungan bahan organik sangat tinggi, ditunjukkan oleh nilai Chemical Oxygen Demand (COD) yang besar, sehingga berpotensi mencemari lingkungan apabila tidak dikelola dengan baik. Di sisi lain, karakteristik tersebut menjadikan DSW sebagai substrat potensial untuk menghasilkan energi terbarukan berupa biogas melalui proses Anaerobic Digestion (AD). Penelitian ini bertujuan untuk menganalisis konsentrasi feed terhadap laju produksi biogas, produksi metana, dan efisiensi COD removal pada pengolahan DSW menggunakan Plug Flow Anaeerobic Digester. Penelitian dilakukan secara eksperimental menggunakan reaktor plug flow anaerobic digester skala laboratorium dengan volume tetap sebesar 60 liter dan sistem operasi kontinu pada kondisi mesofilik alami (30–45 °C).. Parameter yang dianalisis meliputi COD influen dan efluen, pH, laju produksi metana, methane yield, serta COD removal efficiency. Hasil penelitian menunjukkan bahwa pada konsentrasi umpan 11.211,58 mg/L dihasilkan produksi biogas kumulatif sebesar 111,181 L, produksi metana sebesar 69,890 L, Specific Methane Yield sebesar 0,141 L CH₄/g COD removed (STP), serta efisiensi penyisihan COD sebesar 73,45%. Sementara itu, pada konsentrasi umpan 20.996,71 mg/L diperoleh produksi biogas kumulatif sebesar 62,130 L, produksi metana sebesar 42,313 L, Specific Methane Yield sebesar 0,042 L CH₄/g COD removed (STP), dengan efisiensi penyisihan COD yang lebih tinggi, yaitu 79,56%.
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Distillery Spent Wash (DSW) is the primary wastewater generated by the bioethanol industry, characterized by a very high organic content as indicated by its elevated Chemical Oxygen Demand (COD), which poses a significant environmental risk if discharged without proper treatment. On the other hand, these characteristics make DSW a promising substrate for renewable energy production in the form of biogas through Anaerobic Digestion (AD). This study aimed to evaluate the effect of feed concentration on biogas production, methane production, and COD removal efficiency during the anaerobic treatment of DSW using a Plug-Flow Anaerobic Digester (PFAD). The experiment was conducted using a laboratory-scale PFAD with a working volume of 60 L, operated continuously under natural mesophilic conditions (30–45 °C). The evaluated parameters included influent and effluent COD, pH, methane production, Specific Methane Yield (SMY), and COD removal efficiency. At a feed concentration of 11,211.58 mg/L, the system produced a cumulative biogas volume of 111.181 L, a total methane production of 69.890 L, a Specific Methane Yield of 0.141 L CH₄/g COD removed (STP), and a COD removal efficiency of 73.45%. Meanwhile, at a feed concentration of 20,996.71 mg/L, the cumulative biogas production reached 62.130 L, with a total methane production of 42.313 L, a Specific Methane Yield of 0.042 L CH₄/g COD removed (STP), and a higher COD removal efficiency of 79.56%.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Anaerobic Digestion, Biogas, COD removal, Distillery Spent Wash, Plug-Flow Anaerobic Digester, Specific Methane Yield. Anaerobic Digestion, Biogas, COD removal, Distillery Spent Wash, Plug-Flow Anaerobic Digester, Specific Methane Yield |
| Subjects: | T Technology > TP Chemical technology > TP248.3 Biochemical engineering. Bioprocess engineering T Technology > TP Chemical technology > TP359 Biogas |
| Divisions: | Faculty of Vocational > 24305-Industrial Chemical Engineering |
| Depositing User: | Ike Pramudia Galuh Padmasari |
| Date Deposited: | 28 Jul 2026 02:59 |
| Last Modified: | 28 Jul 2026 02:59 |
| URI: | http://repository.its.ac.id/id/eprint/138290 |
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