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This paper explores the performance enhancement of integrated photo-bioelectrochemical systems through the study of bacteria-algae communities, focusing on taxa and functions.

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System
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Abstract

An integrated photo-bioelectrochemical (IPB) system uses microalgae in the cathode of a microbial fuel cell to achieve higher electricity generation and nutrient removal from wastewater. Using multivariate analysis and surveys of IPB studies, this paper identifies key algal and bacterial taxa and discusses their functions critical for IPB performance. Unicellular algae with high photosynthetic oxygen production and biofilm formation can enhance IPB energy production. Diverse bacterial taxa achieve nitrogen transformations and can improve total nitrogen removal. Understanding bacteria-algae interactions via quorum sensing in the IPB cathode may potentially aid in boosting system performance. Future advances in development of IPBs for wastewater treatment will benefit from interdisciplinary collaboration in analysis of microbial community functions.

Key findings

  • Bacteria-algae communities exhibit improved efficiency in photo-bioelectrochemical systems when certain taxa are present.
  • The functions of specific bacteria and algae in these communities contribute to enhanced system performance.
  • The study identifies key factors influencing the performance of integrated photo-bioelectrochemical systems.

Keywords

Microbial fuel cellAlgaePhotobioreactorSewage treatmentBiochemical engineeringWastewater

Identifiers

DOI
10.1016/j.cbpa.2020.05.010
PubMed
32750674
Journal
Current Opinion in Chemical Biology
Year
2020