Kemampuan Microbial Fuel Cell (MFC) Untuk Menghasilkan Energi Listrik Dalam Pengolahan Air Limbah Pabrik Tahu

Maheswari, Atha Fidela (2024) Kemampuan Microbial Fuel Cell (MFC) Untuk Menghasilkan Energi Listrik Dalam Pengolahan Air Limbah Pabrik Tahu. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem Microbial Fuel Cell (MFC) dapat digunakan untuk mengolah air limbah pabrik tahu, karena mikroorganisme dapat mengonversi senyawa organik pada air limbah menjadi elektron, proton, dan karbon dioksida. Larutan elektrolit KMnO4, selain berfungsi sebagai akseptor elektron pada katoda, berfungsi juga sebagai oksidator kuat yang dapat memberikan perbedaan potensial yang semakin besar pada anoda dan katoda, menyebabkan energi listrik yang dihasilkan juga meningkat. Penelitian ini bertujuan untuk menganalisa pengaruh konsentrasi mikroorganisme dan larutan elektrolit terhadap penurunan konsentrasi bahan organik dan produksi energi listrik. Reaktor yang digunakan adalah dual chamber skala laboratorium. Sistem MFC menggunakan elektroda tembaga sebagai katoda yang berisikan larutan KMnO4 dan karbon grafit sebagai anoda yang berisikan substrat air limbah tahu. Kompartemen tersebut dihubungkan dengan pipa PVC yang berisi nutrient agar dan KCl sebagai jembatan garam.
Berdasarkan hasil penelitian, semakin tinggi persentase konsentrasi EM4 (masing- masing 10%, 20% dan 40%) semakin tinggi efisiensi penyisihan pada bahan organik. Variasi konsentrasi EM4 selama 168 jam mampu menurunkan konsentrasi bahan organik sebesar 26% – 66%. Penambahan bakteri EM4 mencapai konsentrasi yang stabil masing – masing pada jam ke-120, 144 dan 168 dengan konsentrasi COD akhir sebesar 3605,73 mg/L, 3532,15 mg/L dan 3505,87 mg/L. Semakin tinggi persentase konsentrasi KMnO4, semakin tinggi listrik yang dihasilkan sebanding juga dengan efisiensi penyisihan COD yang tinggi. Penelitian dilakukan hingga jam ke-288 dengan menggunakan variasi KMnO4 0,3 M, yang menghasilkan arus listrik, tegangan listrik dan power density paling tinggi, sebesar 4,58 mA, 0,54 V dan 748,01 mW/m2.
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Microbial Fuel Cell (MFC) system can be used to treat tofu factory wastewater, because microorganisms can convert organic compounds in wastewater into electrons, protons, and carbon dioxide. KMnO4 electrolyte solution, in addition to functioning as an electron acceptor at the cathode, also functions as a strong oxidizer that can provide a greater potential difference at the anode and cathode, causing the electrical energy produced to also increase. Translated with DeepL.com (free version)This research aims to analyze the effect of microorganism concentration and electrolyte solution on reducing organic matter concentration and producing electrical energy. The reactor used is a dual-chamber laboratory-scale system. The MFC system uses copper electrode as cathode containing KMnO4 solution and graphite carbon as anode containing tofu wastewater substrate. The compartment is connected with PVC pipe containing nutrient agar and KCl as salt bridge. Based on the results of the research, the higher the percentage of EM4 concentration (10%, 20% and 40%) the higher the removal efficiency of organic matter. The variation of EM4 concentration for 168 hours was able to reduce the concentration of organic matter by 26% - 66%. The addition of EM4 bacteria reached a stable concentration at the 120, 144 and 168 hours with a final COD concentration of 3605,73 mg/L, 3532,15 mg/L and 3505,87 mg/L. The higher the percentage of KMnO4 concentration, the higher the electricity generated is proportional to the high COD removal efficiency. The study was carried out until the 288 hours using the KMnO4 variation of 0,3 M variation, which produced the highest electric current, electric voltage and power density, amounting to 4,58 mA, 0,54 V and 748,01 mW/m2.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Electrolyte Solution, Tofu Wastewater, Power Density, Air Limbah Tahu, Energi Listrik, Larutan Elektrolit, Microbial Fuel Cell
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD756.45 Anaerobic treatment T Technology > TD Environmental technology. Sanitary engineering > TD799.85 Electronic apparatus and appliances waste
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis
Depositing User:	Atha Fidela Maheswari
Date Deposited:	30 Jan 2024 05:30
Last Modified:	30 Jan 2024 05:30
URI:	http://repository.its.ac.id/id/eprint/105766

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