Pramoryza, Michellia (2025) Pengaruh Variasi Katolit dan Inokulan Terhadap Produksi Biolistrik dan Degradasi Limbah Cair Tahu pada Reaktor Seri Kontinyu Microbial Fuel Cell. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi katolit (kalium persulfat dan kalium permanganat pada konsentrasi 10, 30, dan 50 mM) terhadap produksi biolistrik serta peran inokulan (Lumpur Sidoarjo dan Bacillus subtilis) terhadap degradasi limbah cair tahu pada sistem MFC seri-kontinyu. Limbah cair tahu yang digunakan dalam penelitian ini memiliki kandungan BOD awal sebesar 2.355,44 ± 58,91 mg/L dan COD awal sebesar 2.947,56 ± 9,04 mg/L. Setelah menjalani proses MFC selama 15 hari, hasil analisis menunjukkan penurunan yang signifikan pada kandungan BOD menjadi 121,38 ± 10,18 mg/L dan COD menjadi 185 ± 31,55 mg/L, yang memenuhi standar baku mutu berdasarkan Peraturan Menteri Lingkungan Hidup RI No. 5 Tahun 2014, yang menetapkan batas BOD 150 mg/L dan COD 300 mg/L. Dalam aspek degradasi limbah, variabel "SLB-PS30" menunjukkan performa terbaik pada hari ke-10 hingga ke-15, dengan persentase BOD removal sebesar 79,01% dan COD removal sebesar 86,67%, serta kandungan mikroba 1,11 x 10²² sel/mL. Sedangkan dalam aspek produksi biolistrik, variabel "SLB-PS50" menunjukkan kinerja terbaik dengan total power density tertinggi sebesar 4,378 x 10⁶ mW/m² dan total energy density sebesar 5,674 x 10⁹ kJ/m² atau total daya sebesar 7,6615 Watt, yang melibatkan katolit kalium persulfat 50 mM dengan kandungan mikroba 7,95 x 10²¹ sel/mL. Pada pengujian performa terbaik selama 45 hari, total power density tercatat mencapai 15.808.147,945 mW/m², total energy density sebesar 1,13555 × 10¹¹ kJ/m², atau total daya sebesar 27,66 Watt, dengan persentase BOD removal 95,22%, COD removal 92,60%, dan penurunan kadar protein sebesar 79,38%. Hasil analisis ANOVA menunjukkan bahwa semua variasi katolit memiliki pengaruh signifikan terhadap produksi biolistrik, serta kedua inokulan, yaitu Lumpur Sidoarjo dan Bacillus subtilis, memiliki pengaruh signifikan terhadap degradasi limbah cair tahu. Penelitian ini berkontribusi terhadap pengembangan teknologi berbasis MFC untuk pengolahan limbah cair organik, yang mendukung pencapaian tujuan SDGs, terutama dalam hal Clean Water and Sanitation (SDG 6) dengan meningkatkan kualitas air melalui pengolahan limbah cair, dan Affordable and Clean Energy (SDG 7) dengan menghasilkan biolistrik melalui proses biokonversi.
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This study aims to evaluate the effect of catolite variations (potassium persulfate and potassium permanganate at concentrations of 10, 30, and 50 mM) on bioelectrical production as well as the role of inoculants (Sidoarjo Mud and Bacillus subtilis) on the degradation of tofu liquid waste in a continuous series MFC system. The tofu liquid waste used in this study had an initial BOD content of 2,355.44 ± 58.91 mg/L and an initial COD of 2,947.56 ± 9.04 mg/L. After undergoing the MFC process for 15 days, the results of the analysis showed a significant decrease in the BOD content to 121.38 ± 10.18 mg/L and COD to 185 ± 31.55 mg/L, which met the quality standards based on the Regulation of the Minister of Environment of the Republic of Indonesia No. 5 of 2014. which sets the limit of BOD 150 mg/L and COD 300 mg/L. In terms of waste degradation, the variable "SLB-PS30" showed the best performance on days 10 to 15, with a percentage of BOD removal of 79.01% and COD removal of 86.67%, as well as a microbial content of 1.11 x 10²² cells/mL. Meanwhile, in the aspect of bioelectrical production, the variable "SLB-PS50" showed the best performance with the highest total power density of 4,378 x 10⁶ mW/m² and total energy density of 5,674 x 10⁹ kJ/m² or total power of 7.6615 Watts, which involved a 50 mM potassium persulfate catholite with a microbial content of 7.95 x 10²¹ cells/mL. In the best performance test for 45 days, the total power density was recorded at 15,808,147,945 mW/m², the total energy density was 1.13555 × 10¹¹ kJ/m², or total power of 27.66 Watts , with a percentage of BOD removal of 95.22%, COD removal of 92.60%, and a reduction of protein content of 79.38%. The results of ANOVA's analysis showed that all catolite variations had a significant influence on bioelectricity production, and that the two inoculants, namely Sidoarjo Mud and Bacillus subtilis, had a significant influence on the degradation of tofu liquid waste. This research contributes to the development of MFC-based technology for organic liquid waste treatment, which supports the achievement of the SDGs, especially in terms of Clean Water and Sanitation (SDG 6) by improving water quality through liquid waste treatment, and Affordable and Clean Energy (SDG 7) by producing bioelectricity through bioconversion processes.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Bacillus subtilis, Kalium Permanganat, Kalium Persulfat, Limbah Cair Tahu, Lumpur Sidoarjo Bacillus subtilis, Potassium Permanganate, Potassium Persulfate, Sidoarjo Mud, Tofu Liquid Waste. |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD195.B56 Biomass energy |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Chemical Engineering > 24101-(S2) Master Thesis |
| Depositing User: | Michellia Pramoryza |
| Date Deposited: | 29 Jul 2025 03:21 |
| Last Modified: | 29 Jul 2025 03:21 |
| URI: | http://repository.its.ac.id/id/eprint/122861 |
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