Development of a microbial fuel cell (mfc) for power generation in a self-sustaining mushroom farm utilizing pleurotus ostreatus and eudrilus eugeniae for humidity and moisture regulation/ Abdul Rajiv A. Macarimbang, Jon Jessel B. Magpantay, Juvan R. Medalla, Jayson Rg M. Sanchez, and Jane Louise S. Tulao.--

Bachelor's thesis

College of Engineering.-- Bachelor of science in electrical engineering: Technological University of the Philippines, 2025.

Includes bibliographic references and index.

This study addresses the need for sustainable energy solutions in agriculture by developing a Microbial Fuel Cell (MFC) system to power environmental monitoring and regulation in a self-sustaining mushroom farm. The system integrates Pleurotus Ostreatus (oyster mushrooms) and Eudrilus Eugeniae (African nightcrawler) as biological agents for electricity generation. Sixty mushroom fruiting bags and eighteen vermicast chambers were constructed, each embedded with zinc-copper electrodes spaced 6 mm apart. The generated power was optimized using a hybrid series-parallel configuration, potassium chloride (KCl) electrolyte, and amplification via an operational amplifier and boost converter. The system achieved output voltages of 1.5 V and current up to 48.37 mA, enabling a 13.5 V output sufficient to power humidity and moisture sensors. The automated setup successfully regulated environmental parameters, maintaining humidity between 70%-90% and soil moisture within 350-550, crucial for mushroom and worm activity. Testing showed enhanced performance with 0.1 M KCl, raising power output to 0.85 W in the earthworm MFC. Functionality tests confirmed the effectiveness of the sensor- triggered solenoid valve system. The study concludes that MFCs, when combined with smart automation and proper electrolyte use, can serve as viable renewable energy sources for sustainable farming applications.