About this Research Topic
Efficient bioenergy production often relies upon complex interactions between cell surfaces and extracellular materials. These redox-reactions can either occur by direct cell contact with the material surface or indirectly via electron shuttling compounds. For example, microbial fuel cell technologies have the potential to convert organic waste matter to electricity. Similarly, electrosynthetic technologies require the use of electrodes for renewable electricity storage and waste valorization. Biogas formation is yet another process that can be bioelectrochemically enhanced with the use of externally provided conductive materials including granular activated carbon, carbon cloth, biochar, graphene, or magnetite . These bioelectrochemical approaches rely on microorganisms exchanging electrons either directly or indirectly through an electron-mediator with conductive materials (e.g., electrode and minerals). Engineering more efficient materials, improving biological factors that allow for enhanced surface colonization, and understanding the mechanisms of extracellular electron transfer remain significant areas of interest.
This Research Topic aims to advance and disseminate knowledge on bioenergy production via interactions between cell surfaces and extracellular conductive materials. The topic will explore research on the development of novel electrode materials, increasing biogas production rates by stimulating electron transfer, increasing electrosynthetic product selectivity, producing more valuable products via direct or indirect cell-to-surface interactions, understanding how to limit/utilization of microbiologically influenced corrosion, and elucidating mechanisms of extracellular electron transfer. These problems and others will be addressed in this research topic in order to attain efficient and sustainable energy recovery.
The aim of this Research Topic is to present technological developments and future opportunities involving biological energy production via direct and mediated electron transfer between cell surfaces and extracellular materials . Research articles and reviews focusing on the following topics are welcome:
Development of novel electrode materials to enhance bioenergy production
Elucidating bioenergy production mechanisms of extracellular electron transfer into or out of the cell by microorganisms
Identification of microbial communities or pure cultures capable of generating electricity or accepting electrons from electrodes
Genetic engineering of microbes to expand product profiles with the utilization of bioenergy
Design, optimization, scale-up, and operation of reactors/equipments for bioenergy production
Understanding mechanisms of microbiologically influenced corrosion that may affect energy production
Technical and economic analyses for bioenergy production via bioelectrochemical approaches
Keywords: Extracellular Materials, Bioenergy, Electroactive Interactions, Extracellular Electron Exchange, Bioelectrochemistry
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.