Parameter

Anaerobic digestion (AD)

Microbial fuel cell (MFC)

HYDRAULIC RETENTION TIME

120 h

384 h

TEMPERATURE REGIMES

30˚C - 35˚C (requires heating and temperature control)

18˚C - 20˚C (doesn’t require heating and temperature control)

COD REMOVAL EFFICIENCY

95.7%

97%

AVERAGE COD REMOVAL RATE

376.2 mg/dm³/day

118.3 mg/dm³/d

MAXIMUM COD REMOVAL RATE

380 mg/dm³/day

722 mg/dm³/day

BIOMASS GROWTH (EXCESS ACTIVATED SLUDGE—DRY WEIGHT PER GRAM COD)

0.159 g/g COD

0.09 g/g COD

ENERGY RECOVERY

Biogas (heat and electricity after cogeneration)

Direct electricity generation