Optimisation of anaerobic digestion of pot ale after thermochemical pre-treatment through Response Surface Methodology

Valorisation of organic wastes in renewable energy production has attracted a global attention order to achieve sustainable industrial growth. Anaerobic digestion (AD) is considered be one the most environmentally friendly waste management technology and also fulfils necessity fuel generation. It much less demand than other technologies like gasification or pyrolysis due its low operation temperature. Whiskey distillery wastewater, pot ale, classified as high strength content hence rendering it suitable substrate for anaerobic digestion. Despite waste-to-energy conversion potential, ale contains lignin fraction which makes resistant biodegradation. Therefore introducing pre-treatment step required enhance biogas matter degradation. In this study was assessed at lab scale batch mode reactor after implementation 1 M NaOH microwave pre-treatments varying power settings. Response Surface Methodology adopted process modelling optimisation inoculum ratio, initial pH were investigated three different levels. addition, mineral quality digestate been analysed agricultural use.