Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells

Sago hampas is a starch-based biomass resulted from the sago starch extraction process that has potential to be a substrate for bioenergy production. Microbial fuel cells (MFCs) is a promising technology that employ the microorganisms to utilize the substrate, which then generate the electrical powe...

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Main Author:	Jenol, Mohd Azwan
Format:	Thesis
Language:	English
Published:	2020
Subjects:	Electrophysiology - Research Sago Clostridium
Online Access:	http://psasir.upm.edu.my/id/eprint/92831/1/FBSB%202020%2028%20-%20IR.1.pdf
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spelling	my-upm-ir.928312022-10-17T04:38:01Z Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells 2020-11 Jenol, Mohd Azwan Sago hampas is a starch-based biomass resulted from the sago starch extraction process that has potential to be a substrate for bioenergy production. Microbial fuel cells (MFCs) is a promising technology that employ the microorganisms to utilize the substrate, which then generate the electrical power. Therefore, through the concept of biomass fuel cells, this study was aimed to utilize sago hampas as substrate in microbial fuel cells to generate the bioelectricity by Clostridium beijerinckii SR1, via sugar and volatile fatty acids (VFAs) platform and direct biomass utilization system. A single culture, C. beijerinckii SR1 has been employed to produce VFAs from 40 g/L of sago hampas (containing 20 g/L of starch content), resulted 6.71 g/L of total VFAs with the VFAs yield of 0.30 g/g. The enhancement of VFAs from sago hampas was conducted using one-factor-at-a-time (OFAT) with the variables of carbon sources concentration, nitrogen (yeast extract) concentration and addition of inorganic nitrogen sources. The production of VFA has successfully enhanced by 14.6%, with the OFAT condition obtained was 3% (w/v) of sago hampas, 3 g/L of yeast extract and the additional 2 g/L of NH4NO3, resulted the production of VFAs (7.69 g/L) with 0.45 g/g of VFAs yield. Furthermore, the effect of sugar and VFAs platform from sago hampas on the bioelectricity generation using microbial fuel cells were studied. The results showed the VFAs platform of sago hampas has better bioelectricity generation, in term of maximum power density (max PD) as compared to sugar platform. The highest max PD obtained was 72.62 mW/m2 from 2 g/L of VFAs hydrolysate. At the final stage, direct biomass fuel cells was performed using sago hampas directly as a substrate in MFCs. Result shown that 73.78 mW/m2 of maximum power density was obtained from direct biomass fuel cells by C. beijerinckii SR1. This result shows a comparable maximum power density as compared to VFAs platform of sago hampas. Overall, the generation of bioelectricity from sago hampas has been successfully studied using microbial fuel cells system by C. beijerinckii SR1. Electrophysiology - Research Sago Clostridium 2020-11 Thesis http://psasir.upm.edu.my/id/eprint/92831/ http://psasir.upm.edu.my/id/eprint/92831/1/FBSB%202020%2028%20-%20IR.1.pdf text en public doctoral Universiti Putra Malaysia Electrophysiology - Research Sago Clostridium Abd. Aziz, Suraini
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Abd. Aziz, Suraini
topic	Electrophysiology - Research Sago Clostridium
spellingShingle	Electrophysiology - Research Sago Clostridium Jenol, Mohd Azwan Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells
description	Sago hampas is a starch-based biomass resulted from the sago starch extraction process that has potential to be a substrate for bioenergy production. Microbial fuel cells (MFCs) is a promising technology that employ the microorganisms to utilize the substrate, which then generate the electrical power. Therefore, through the concept of biomass fuel cells, this study was aimed to utilize sago hampas as substrate in microbial fuel cells to generate the bioelectricity by Clostridium beijerinckii SR1, via sugar and volatile fatty acids (VFAs) platform and direct biomass utilization system. A single culture, C. beijerinckii SR1 has been employed to produce VFAs from 40 g/L of sago hampas (containing 20 g/L of starch content), resulted 6.71 g/L of total VFAs with the VFAs yield of 0.30 g/g. The enhancement of VFAs from sago hampas was conducted using one-factor-at-a-time (OFAT) with the variables of carbon sources concentration, nitrogen (yeast extract) concentration and addition of inorganic nitrogen sources. The production of VFA has successfully enhanced by 14.6%, with the OFAT condition obtained was 3% (w/v) of sago hampas, 3 g/L of yeast extract and the additional 2 g/L of NH4NO3, resulted the production of VFAs (7.69 g/L) with 0.45 g/g of VFAs yield. Furthermore, the effect of sugar and VFAs platform from sago hampas on the bioelectricity generation using microbial fuel cells were studied. The results showed the VFAs platform of sago hampas has better bioelectricity generation, in term of maximum power density (max PD) as compared to sugar platform. The highest max PD obtained was 72.62 mW/m2 from 2 g/L of VFAs hydrolysate. At the final stage, direct biomass fuel cells was performed using sago hampas directly as a substrate in MFCs. Result shown that 73.78 mW/m2 of maximum power density was obtained from direct biomass fuel cells by C. beijerinckii SR1. This result shows a comparable maximum power density as compared to VFAs platform of sago hampas. Overall, the generation of bioelectricity from sago hampas has been successfully studied using microbial fuel cells system by C. beijerinckii SR1.
format	Thesis
qualification_level	Doctorate
author	Jenol, Mohd Azwan
author_facet	Jenol, Mohd Azwan
author_sort	Jenol, Mohd Azwan
title	Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells
title_short	Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells
title_full	Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells
title_fullStr	Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells
title_full_unstemmed	Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells
title_sort	bioelectricity generation from sago hampas by clostridium beijerinckii sr1 using microbial fuel cells
granting_institution	Universiti Putra Malaysia
publishDate	2020
url	http://psasir.upm.edu.my/id/eprint/92831/1/FBSB%202020%2028%20-%20IR.1.pdf
_version_	1747813775176630272

Bioelectricity generation from sago hampas by Clostridium beijerinckii SR1 using microbial fuel cells

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