The resource recovery potential of blackwater and foodwaste: anaerobic co-digestion in serial semi-continuous stirred tank reactors

The sustainable management of household food waste (FW) and blackwater (BW) is becoming more challenging. This research investigated three different semi-continuous stirred tank reactor (CSTR) performances for digestion the mixture BW FW; producing biogas. Through application serial semi-CSTR (35 °C), produced biogas from BW-FW (1:1 proportion) offered to be higher than single 55 °C (25%) that 35 (31%). volume production was attributed extra generated residual organic matter volatile fatty acids decomposition existing in digestate first further utilized second-step methanogenic chamber. physicochemical parameters showed stable performance with total chemical oxygen demand reduction efficiency 97%, without inhibition at pH value 8.5 ± 0.9. advantages improving worth resources recovered FW accomplishing a percentage enhanced sludge stabilization water management.