MESSAI.iO

AI summary

70% confidence

A microbial fuel cell (MFC) was used as a post-treatment unit for UASB reactor effluents from distillery spent wash, achieving 90% COD removal and 1.1V open circuit voltage.

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

7 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

Post treatment of Up-flow anaerobic sludge blanket reactor (UASBR) effluents by a duel chambered Microbial fuel cell (MFC) was evaluated for high strength distillery spent wash. Bench scale UASBR (5 L capacity) and MFC (1 L capacity) with carbon electrodes having proton exchange membrane were used to elucidate the energy generation potential and substrate (COD) removal efficiency. Step by step, the influent COD concentration of UASB-MFC unit was increased. The MFC shows increasing trend of open circuit voltage, COD removal and substrate degradation rate with increase in influent COD concentration. The maximum COD removal (73.79%) and open circuit voltage (1.1 V) were achieved at 20600 mg/L of COD. At maximum COD concentration, MFC showed power density (maximum), substrate degradation rate and power yield as 61.61mW/m², 1.086 kg COD/m3day and 0.041 W/kg CODR respectively. UASB-MFC combined unit gave maximum COD removal of 90%. The experimental data revealed the potential of MFC as feasible, economic (cost saving) and sustainable option.

Key findings

  • MFC showed increasing trend of open circuit voltage, COD removal, and substrate degradation rate with increase in influent COD concentration.
  • Maximum COD removal (73.79%) and open circuit voltage (1.1 V) were achieved at 20600 mg/L of COD.
  • MFC showed power density (61.61mW/m²), substrate degradation rate (1.086 kg COD/m3day), and power yield (0.041 W/kg CODR) at maximum COD concentration.

Keywords

Microbial fuel cellEffluentChemical oxygen demandHydraulic retention timePulp and paper industryPower density

Identifiers

DOI
10.25303/2712rjce900105
Journal
Research Journal of Chemistry and Environment
Year
2023