(584i) Methane Production from Crude Solid Residue: A Minimal Organic Waste Strategy
- Conference: AIChE Annual Meeting
- Year: 2017
- Proceeding: 2017 Annual Meeting
- Group: Fuels and Petrochemicals Division
- Time: Wednesday, November 1, 2017 - 3:15pm-4:45pm
MSW is mainly constituted by Food (21% w/w) and paper wastes (28% w/w) efficient management of which has become imperative today. Thus, we have combined TAD (using thermophilic methanogenic consortia, TMC) with AF, for efficient breakdown of complex, undefined food and paper waste mixture for methane production. The feedstock for TAD is termed as âsecondary waste (SW)â as it is the residual of anaerobic hydrolysis carried out using CRUDE (Conversion of Raw and Untreated Disposal into Ethanol) process.Â Batch TAD experiments were carried out with SW using TMC at 60 Â°C, pH 7.5 up to 30 days. Methane yield using SW was 95Â±7 L kgâ1 VS (volatile solid) after 17 days treatment (60Â°C; 50 rpm; pH 7.5) compared to 92Â±11 L kgâ1 VS with primary waste. These data confirms the potentials of SW as feedstock for methane production. After optimizing the substrate to inoculum ratio, more concentrated waste streams could be used and methane yields increased up to ~200±5 L CH4 Kg-1 VS. Gas chromatography confirmed the dominance of methane ( 80±6% v/v) in samples analyzed, with traces of CO2 and H2.