Microbial fuel cell uses fruit and vegetable waste with bacteria from cow dung

vegetable waste
Credit: Pixabay/CC0 Public Domain

There is a huge and increasing demand for sustainable energy sources across the globe. New work in the International Journal of Renewable Energy Technology, considers fruit and vegetable waste as a potential resource for electricity generation. Chemists Sudha Kumari Jha and Annapurna Jha of Jamshedpur Women's College in Jamshedpur, East Singhbhum, Jharkhand, India, provide details of a microbial fuel cell that uses such waste as its feedstock with thermophilic bacteria, Clostridium cellulose and Clostridium cellulofermentans, obtained from cow dung.

Alternative energy sources are urgently needed in the face of anthropogenic climate change driven by rising levels of carbon emissions from the burning of fossil fuels. Much investigation and investment have been put into solar, nuclear, wind, geothermal, tidal, and other approaches. Fuel cells that make use of waste materials have also been a focus of this work.

The team explains how their system is essentially a bioreactor that can convert chemical energy from inorganic or organic components to electrical energy through the catalytic reactions of microbes. The anaerobic breakdown of carbohydrates present in by those microbes promotes the entire process, the team explains. They tested six different microbial fuel cell setups at room temperature and found that the optimal setup was established in ten days with an 800-milliliter sample and could generate 3 volts. Additionally, the only byproduct of the process is water.

The relatively simple setup could be constructed from readily available materials even in the developed world and used with a kit containing the other components. A 3-volt power supply fed with food waste and would be useful for charging portable devices, such as smartphones and small LED flashlights.


Explore further

Waste not, want watts: Turning waste into energy

More information: Sudha Kumari Jha et al, Generation of bioelectricity using vegetable and fruit wastes, International Journal of Renewable Energy Technology (2022). DOI: 10.1504/IJRET.2022.123977
Provided by Inderscience
Citation: Microbial fuel cell uses fruit and vegetable waste with bacteria from cow dung (2022, July 19) retrieved 7 October 2022 from https://techxplore.com/news/2022-07-microbial-fuel-cell-fruit-vegetable.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
4 shares

Feedback to editors