Electroactive biofilms: how microbial electron transfer enables bioelectrochemical applications

Area of Science:

• Microbiology
• Biotechnology
• Environmental Science

Background:

• Microbial biofilms are widespread in natural and industrial settings, influencing biogeochemical cycles and causing issues like biofouling.
• Biofilms play critical roles, from beneficial microbial-mineral interactions to detrimental biofouling and biocorrosion.
• Bioprocessing offers a way to utilize biofilms for producing valuable commodities.

Purpose of the Study:

• To review the current knowledge on bacterial biofilm formation in bioprocessing.
• To examine the significance of cell-surface redox interactions and microbial electron transfer.
• To identify challenges and future directions in microbe-mediated bioprocessing.

Main Methods:

• Literature review of scientific publications on microbial biofilms and bioprocessing.
• Analysis of research on electrochemical bioreactors and their applications.
• Synthesis of information regarding bacterial biofilm characteristics and functions.

Main Results:

• The cell-surface interface is crucial for facilitating bioprocesses involving biofilms.
• Microbial electron transfer is a key mechanism in microbe-mediated bioprocessing.
• Electrochemical bioreactors show promise for wastewater treatment and commodity production.

Conclusions:

• Further research into biofilm formation and electron transfer is needed to optimize bioprocessing.
• Harnessing biofilms in electrochemical bioreactors presents significant opportunities for sustainable production.
• Addressing challenges in microbe-mediated bioprocessing will unlock future potential.