Cargando…

Rainwater-driven microbial fuel cells for power generation in remote areas

The possibility of using rainwater as a sustainable anolyte in an air-cathode microbial fuel cell (MFC) is investigated in this study. The results indicate that the proposed MFC can work within a wide temperature range (from 0 to 30°C) and under aerobic or anaerobic conditions. However, the rainwate...

Descripción completa

Detalles Bibliográficos
Autores principales: Amen, Mohamed Taha, Yasin, Ahmed S., Hegazy, Mohamed I., Jamal, Mohammad Abu Hena Mostafa, Hong, Seong-Tshool, Barakat, Nasser A. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8611341/
https://www.ncbi.nlm.nih.gov/pubmed/34849243
http://dx.doi.org/10.1098/rsos.210996
_version_ 1784603275261116416
author Amen, Mohamed Taha
Yasin, Ahmed S.
Hegazy, Mohamed I.
Jamal, Mohammad Abu Hena Mostafa
Hong, Seong-Tshool
Barakat, Nasser A. M.
author_facet Amen, Mohamed Taha
Yasin, Ahmed S.
Hegazy, Mohamed I.
Jamal, Mohammad Abu Hena Mostafa
Hong, Seong-Tshool
Barakat, Nasser A. M.
author_sort Amen, Mohamed Taha
collection PubMed
description The possibility of using rainwater as a sustainable anolyte in an air-cathode microbial fuel cell (MFC) is investigated in this study. The results indicate that the proposed MFC can work within a wide temperature range (from 0 to 30°C) and under aerobic or anaerobic conditions. However, the rainwater season has a distinct impact. Under anaerobic conditions, the summer rainwater achieves a promised open circuit potential (OCP) of 553 ± 2 mV without addition of nutrients at the ambient temperature, while addition of nutrients leads to an increase in the cell voltage to 763 ± 3 and 588 ± 2 mV at 30°C and ambient temperature, respectively. The maximum OCP for the winter rainwater (492 ± 1.5 mV) is obtained when the reactor is exposed to the air (aerobic conditions) at ambient temperature. Furthermore, the winter rainwater MFC generates a maximum power output of 7 ± 0.1 mWm(−2) at a corresponding current density value of 44 ± 0.7 mAm(−2) at 30°C. While, at the ambient temperature, the maximum output power is obtained with the summer rainwater (7.2 ± 0.1 mWm(−2) at 26 ± 0.5 mAm(−2)). Moreover, investigation of the bacterial diversity indicates that Lactobacillus spp. is the dominant electroactive genus in the summer rainwater, while in the winter rainwater, Staphylococcus spp. is the main electroactive bacteria. The cyclic voltammetry analysis confirms that the electrons are delivered directly from the bacterial biofilm to the anode surface and without mediators. Overall, this study opens a new avenue for using a novel sustainable type of MFC derived from rainwater.
format Online
Article
Text
id pubmed-8611341
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher The Royal Society
record_format MEDLINE/PubMed
spelling pubmed-86113412021-11-29 Rainwater-driven microbial fuel cells for power generation in remote areas Amen, Mohamed Taha Yasin, Ahmed S. Hegazy, Mohamed I. Jamal, Mohammad Abu Hena Mostafa Hong, Seong-Tshool Barakat, Nasser A. M. R Soc Open Sci Ecology, Conservation and Global Change Biology The possibility of using rainwater as a sustainable anolyte in an air-cathode microbial fuel cell (MFC) is investigated in this study. The results indicate that the proposed MFC can work within a wide temperature range (from 0 to 30°C) and under aerobic or anaerobic conditions. However, the rainwater season has a distinct impact. Under anaerobic conditions, the summer rainwater achieves a promised open circuit potential (OCP) of 553 ± 2 mV without addition of nutrients at the ambient temperature, while addition of nutrients leads to an increase in the cell voltage to 763 ± 3 and 588 ± 2 mV at 30°C and ambient temperature, respectively. The maximum OCP for the winter rainwater (492 ± 1.5 mV) is obtained when the reactor is exposed to the air (aerobic conditions) at ambient temperature. Furthermore, the winter rainwater MFC generates a maximum power output of 7 ± 0.1 mWm(−2) at a corresponding current density value of 44 ± 0.7 mAm(−2) at 30°C. While, at the ambient temperature, the maximum output power is obtained with the summer rainwater (7.2 ± 0.1 mWm(−2) at 26 ± 0.5 mAm(−2)). Moreover, investigation of the bacterial diversity indicates that Lactobacillus spp. is the dominant electroactive genus in the summer rainwater, while in the winter rainwater, Staphylococcus spp. is the main electroactive bacteria. The cyclic voltammetry analysis confirms that the electrons are delivered directly from the bacterial biofilm to the anode surface and without mediators. Overall, this study opens a new avenue for using a novel sustainable type of MFC derived from rainwater. The Royal Society 2021-11-24 /pmc/articles/PMC8611341/ /pubmed/34849243 http://dx.doi.org/10.1098/rsos.210996 Text en © 2021 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Ecology, Conservation and Global Change Biology
Amen, Mohamed Taha
Yasin, Ahmed S.
Hegazy, Mohamed I.
Jamal, Mohammad Abu Hena Mostafa
Hong, Seong-Tshool
Barakat, Nasser A. M.
Rainwater-driven microbial fuel cells for power generation in remote areas
title Rainwater-driven microbial fuel cells for power generation in remote areas
title_full Rainwater-driven microbial fuel cells for power generation in remote areas
title_fullStr Rainwater-driven microbial fuel cells for power generation in remote areas
title_full_unstemmed Rainwater-driven microbial fuel cells for power generation in remote areas
title_short Rainwater-driven microbial fuel cells for power generation in remote areas
title_sort rainwater-driven microbial fuel cells for power generation in remote areas
topic Ecology, Conservation and Global Change Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8611341/
https://www.ncbi.nlm.nih.gov/pubmed/34849243
http://dx.doi.org/10.1098/rsos.210996
work_keys_str_mv AT amenmohamedtaha rainwaterdrivenmicrobialfuelcellsforpowergenerationinremoteareas
AT yasinahmeds rainwaterdrivenmicrobialfuelcellsforpowergenerationinremoteareas
AT hegazymohamedi rainwaterdrivenmicrobialfuelcellsforpowergenerationinremoteareas
AT jamalmohammadabuhenamostafa rainwaterdrivenmicrobialfuelcellsforpowergenerationinremoteareas
AT hongseongtshool rainwaterdrivenmicrobialfuelcellsforpowergenerationinremoteareas
AT barakatnasseram rainwaterdrivenmicrobialfuelcellsforpowergenerationinremoteareas