MESSAI.iO

AI summary

70% confidence

Researchers investigated electricity generation from wheat straw hydrolysate in microbial fuel cells and analyzed the microbial communities involved.

Generated by MESSAI extraction pipeline · review against source PDF

Generic MFCRepresentative model
Click to animate flow
loading 3D model…

Representative MFC — matched on the paper’s system type only, not its reactor or geometry.

Extraction

Reported parameters

6 extracted values

View extracted values

Open in lab for full controls, parameter editing, and template overlays.

Open in lab →

What they did

System
MFC

What worked

No outcome metrics extracted yet.

Abstract

ABSTRACT Electricity generation from wheat straw hydrolysate and the microbial ecology of electricity-producing microbial communities developed in two-chamber microbial fuel cells (MFCs) were investigated. The power density reached 123 mW/m 2 with an initial hydrolysate concentration of 1,000 mg chemical oxygen demand (COD)/liter, while coulombic efficiencies ranged from 37.1 to 15.5%, corresponding to the initial hydrolysate concentrations of 250 to 2,000 mg COD/liter. The suspended bacteria found were different from the bacteria immobilized in the biofilm, and they played different roles in electricity generation from the hydrolysate. The bacteria in the biofilm were consortia with sequences similar to those of Bacteroidetes (40% of sequences), Alphaproteobacteria (20%), Bacillus (20%), Deltaproteobacteria (10%), and Gammaproteobacteria (10%), while the suspended consortia were predominately Bacillus (22.2%). The results of this study can contribute to improving understanding of and optimizing electricity generation in microbial fuel cells.

Key findings

  • Power density reached 123 mW/m² with an initial hydrolysate concentration of 1,000 mg COD/liter.
  • Coulombic efficiencies ranged from 37.1 to 15.5% corresponding to initial hydrolysate concentrations of 250 to 2,000 mg COD/liter.
  • Bacteria in biofilm were consortia with sequences similar to Bacteroidetes, Alphaproteobacteria, Bacillus, Deltaproteobacteria, and Gammaproteobacteria, while suspended consortia were predominately Bacillus.

Keywords

Microbial fuel cellHydrolysateChemical oxygen demandMicrobial consortiumStrawBiomass (ecology)

Identifiers

DOI
10.1128/aem.02240-08
Journal
Applied and Environmental Microbiology
Year
2009