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Overview of the advances in plant microbial fuel cell technology for sustainable energy recovery from rhizodeposition

Riya Bhattacharya,V. Parthasarthy,D. Bose,Khushabu Gulia,Siddhant Srivastava,K. Roshan,R. Shankar

Published 2023 in Biotechnology and Bioengineering

ABSTRACT

In plant microbial fuel cells (p‐MFCs) electrochemically active microbes present around the plant root convert rhizodeposits or the organic matter into electrons, protons, and CO2. This work covers the increasing trend in research with p‐MFCs with their mechanism of operation. Different plant species and their selection criteria are also covered. Furthermore, the long‐term evaluation of such systems with its cost effectiveness and commercial and environmental perspectives are also presented. A critical aspect for bioelectricity production is the photosynthetic pathway of the plant. Additionally, the microbial communities and reactor configurations employed across different capacities are also reviewed. The challenges with bioelectricity production and the opportunity for developing p‐MFCs in conjunction with traditional MFCs are also covered. These electrogenic reactor systems harness bioelectricity without harvesting the plant and has the capacity to utilize this energy for remote power applications.

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