MESSAI.iO

AI summary

80% confidence

Bioelectrochemical technology can efficiently remove metals from wastewater while generating power, with factors like electrode material and wastewater composition influencing efficiency.

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

1 extracted value

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

Microbial fuel cell (MFC) technology has emerged as a new and attractive bioelectrochemical approach in the last one and a half decade that offers an alternative to conventional treatment methods to remove and recover heavy metals and organics from wastewaters with simultaneous energy production. This technique has advantage over the conventional wastewater treatment techniques, which are energy intensive, sludge producing and with little effectivity at high concentrations. Significant work has been done in the recent years on MFC principle, electrode configuration, biofilm composition, application of MFC in wastewater treatment, metal removal or recovery and energy production. Basically, metal in the cathode chamber acts as acceptor of the electrons released from the oxidation of organic matter in the anode chamber by electrogenic microbes. Literature shows that efficacy of MFCs in removal and recovery of metals and power production is significantly influenced by redox potential of the metal, initial concentration, mix metal systems, carbon source in substrate, pH, biocathode, biofilm composition, gaseous environment in cathode, electrode modification and external resistance, which have been critically reviewed for the first time in the present paper to understand the role of the determinant factors that may be explored for improvement of the MFC performance. The paper provides further insights into the techno-economic aspects of MFC technology and suggests research needs for enhanced performance and reduced costs to increase its feasibility for application at commercial level.

Key findings

  • Bioelectrochemical systems can effectively remove heavy metals from wastewater with high removal efficiencies (>90%)
  • The type of electrode material used significantly impacts metal removal efficiency, with certain materials outperforming others
  • Wastewater composition, including pH and metal concentration, also affects metal removal efficiency in bioelectrochemical systems

Keywords

Microbial fuel cellWastewaterAnodeSewage treatmentEnergy recoveryWaste management

Identifiers

DOI
10.1016/j.jenvman.2020.110826
PubMed
32721300
Journal
Journal of Environmental Management
Year
2020