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Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...
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Microbial growth media are essential tools in microbiology, providing the nutrients and conditions necessary to cultivate and study microorganisms. These media are categorized by their composition, consistency, and functional roles, enabling researchers to investigate microbial physiology, behavior, and interactions.Types and Consistencies of Growth MediaGrowth media can be solid, liquid, or semisolid. Solid media, often agar-based, allow visible colony growth for isolation and enumeration.
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Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
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Reactors for Microbial Electrobiotechnology.

Thomas Krieg1, Joana Madjarov2, Luis F M Rosa3

  • 1DECHEMA-Forschungsinstitut - Industrial Biotechnology, Frankfurt am Main, Germany.

Advances in Biochemical Engineering/Biotechnology
|April 14, 2018
PubMed
Summary
This summary is machine-generated.

Standardized reactor design is crucial for microbial electrochemical systems (MES) to enable result comparison and advance commercialization. This study reviews current MES reactor designs, highlighting their strengths and weaknesses for future engineering.

Keywords:
Bioelectrochemical systemsBioelectrosynthesisMicrobial electrochemical technology (MET)Microbial electrolysis cells (MEC)Microbial electrosynthesis (MES)Reactor conceptsScoring

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Area of Science:

  • Biotechnology
  • Electrochemistry
  • Environmental Engineering

Background:

  • Microbial electrochemical systems (MES) are integral to bioelectrochemical processes, with reactor design significantly impacting experimental outcomes.
  • A lack of standardized reactor platforms hinders cross-comparison and benchmarking of MES performance against conventional biotechnologies.
  • Knowledge-driven engineering of MES reactors is essential for their practical application and commercial viability.

Purpose of the Study:

  • To assess the essential requirements for reactors in bioelectrochemical systems.
  • To identify potential performance losses attributable to reactor design.
  • To review and critically evaluate existing MES reactor types and designs.

Main Methods:

  • Compilation and categorization of various microbial electrochemical system reactor designs, from simple H-cells to stirred tank reactors.
  • Assessment of reactor design criteria and their influence on bioelectrochemical system performance.
  • Comparative analysis of the strengths and weaknesses of different reactor configurations.

Main Results:

  • Reactor design and materials critically influence microbial electrochemical process results.
  • Existing MES reactor designs exhibit significant variability, posing a convention gap.
  • Identified weaknesses and strengths of current reactors based on key design criteria.

Conclusions:

  • Standardization of microbial electrochemical system reactor design is imperative for reproducible research and development.
  • Future engineering efforts should focus on addressing the identified weaknesses of current reactor types.
  • Optimized reactor design will accelerate the transition of MES from laboratory research to industrial application.