Municipal solid waste (MSW) generation is on the rise due to rapid increase in population. Food waste covers a considerable portion of total waste generated. Around 1.3 billion tons of food waste is being generated every year globally. Land filling has been used as the management strategy, which creates serious environmental problems such as emission of greenhouse gases, water pollution as a result of leachate, etc. On the other hand, food waste can be managed sustainably by composting and anaerobic digestion. Composting is relatively a simple process, which results in the formation of the stabilized organic manure called compost. However, some problems associated with composting are generation of leachate upon excess watering, release of carbon dioxide, odour nuisance, requirement of huge space, etc. On the other hand, anaerobic digestion provides stabilised digestate(a soil conditioner) as well as the energy rich biogas (i.e. bio-methane). Bio-hydrogen, one of the intermediate products of anaerobic digestion can be obtained if the methanogenesis process is prevented. The mono-digestion of food waste for bio-hydrogen production causes some problems like imbalance of nutrients and acidification, which can be avoided by co-digestion of suitable substrate that will have synergistic effect with the food waste. Sewage sludge appears to be a suitable choice as it has sufficient buffering capacity and less carbon to nitrogen ratio. This seminar will focus on the pre-treatment and optimization of the system parameters like C/N ratio, mix ratios of sewage sludge and food waste, volatile solids concentration for maximum biogas generation via co-digestion of food waste and sewage sludge. Moreover, this seminar will highlight the past investigations related to pre-treatment of the substrates and effect of system parameters on the bio-hydrogen production. Finally, the preliminary results about pre-treatment process of food waste and sewage sludge on bio-gas production will be highlighted.