The bioelectrical potential of organic compost soil and Pasig river silt as fuel substrate by using graphite-coated electrodes in a single chamber microbial fuel cell (SCMFC)/ Jennifer B. Lim, Carl Adrianne R. Lu, and Alshane A. Tadjal .--

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Lim, Jennifer B [author ]

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TextPublication details: Manila: Technological University of the Philippines, 2024.Description: xii, 119pages: 29cm. +1 CD-ROM (4 3/4in.)Content type:

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BTH RB 37 L56 2024

Dissertation note: College of Science .-- Bachelor of Applied Science in Laboratory Technology: Technological University of the Philippines, 2024. Summary: The increasing global energy demand necessitates the exploration of alternative renewable energy sources. Microbial fuel cells (MFCs), which utilize microorganisms to convert organic matter into electricity, offer a promising solution. This study investigates the bioelectrical potential of organic compost soil and Pasig River silt as fuel substrates using graphite-coated electrodes in a single-chamber microbial fuel cell (SCMFC). Key parameters of the MFC setup, including electrode binder, electrode size, and electrode spacing, were optimized to maximize output voltage. Five different SCMFC setups were constructed using pure Pasig River silt, compost soil composed of garden soil, vermicast, chicken manure, cow manure, cocopeat, carbonized rice hull, and fresh rice hull, and their mixtures in varying ratios (1:1, 1:3, 3:1). Characterization and quantification of isolated bacterial colonies, along with physicochemical properties such as soil color, consistency, texture, bulk density, moisture content, pH, and macronutrient levels, were analyzed before and after the evaluation. The open circuit voltage (OCV) of the MFC was measured over 30 days. Results indicated that optimal conditions for maximizing output voltage included sucrose as the binder, electrodes of 8.2 cm diameter and 4.1 cm radius, and 4 cm spacing between electrodes. The highest voltage output, 631.0 mV, was achieved with a 3:1 mixture, while pure compost soil and pure river silt produced lower voltages of 257.0 mV and 60.0 mV, respectively. These findings suggest that utilizing locally available organic materials like compost and river silt in MFCs can generate electricity while aiding waste management and promoting renewable energy. Keywords: Microbial fuel cells (MFCs), Single-chamber microbial fuel cell (SCMFC), Graphite-coated electrodes, Open circuit voltage (OCV)

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Item type	Current library	Shelving location	Call number	Copy number	Status	Notes	Date due	Barcode
Bachelor's Thesis COS	TUP Manila Library	Thesis Section-2nd floor	BTH RB 37 L56 2024 (Browse shelf(Opens below))	c.1.	Not for loan	For library use only		BTH0005008

Thesis (undergraduate)

College of Science .-- Bachelor of Applied Science in Laboratory Technology: Technological University of the Philippines, 2024.

Includes bibliography.

The increasing global energy demand necessitates the exploration of alternative renewable
energy sources. Microbial fuel cells (MFCs), which utilize microorganisms to convert
organic matter into electricity, offer a promising solution. This study investigates the
bioelectrical potential of organic compost soil and Pasig River silt as fuel substrates using
graphite-coated electrodes in a single-chamber microbial fuel cell (SCMFC). Key
parameters of the MFC setup, including electrode binder, electrode size, and electrode
spacing, were optimized to maximize output voltage. Five different SCMFC setups were
constructed using pure Pasig River silt, compost soil composed of garden soil, vermicast,
chicken manure, cow manure, cocopeat, carbonized rice hull, and fresh rice hull, and their
mixtures in varying ratios (1:1, 1:3, 3:1). Characterization and quantification of isolated
bacterial colonies, along with physicochemical properties such as soil color, consistency,
texture, bulk density, moisture content, pH, and macronutrient levels, were analyzed before
and after the evaluation. The open circuit voltage (OCV) of the MFC was measured over
30 days. Results indicated that optimal conditions for maximizing output voltage included
sucrose as the binder, electrodes of 8.2 cm diameter and 4.1 cm radius, and 4 cm spacing
between electrodes. The highest voltage output, 631.0 mV, was achieved with a 3:1
mixture, while pure compost soil and pure river silt produced lower voltages of 257.0 mV
and 60.0 mV, respectively. These findings suggest that utilizing locally available organic
materials like compost and river silt in MFCs can generate electricity while aiding waste
management and promoting renewable energy.
Keywords: Microbial fuel cells (MFCs), Single-chamber microbial fuel cell (SCMFC),
Graphite-coated electrodes, Open circuit voltage (OCV)

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