Energy Transition and Decarbonization- Production of Biogas from Biowaste (Food waste) with Wood Chips Towards Low-Carbon Environment.

Depleting fossil fuel sources accompanied by continuously growing energy demands lead to increased interest in alternative energy sources. Besides, the uncontrolled generation of large amounts of food wastes has resulted in severe environmental issues. This is a major concern in global climate change. As the world drives toward sustainable development in all sectors, there is a need to adopt scientific methods to address the spiraling global environmental concerns associated with the continued generation of wastes especially in the light of limited availability of final disposal sites. Biogas is one of the excellent renewable sources of energy and it is produced from the Anaerobic Digestion (AD) of organic waste: hence, providing a great solution to both energy demand and waste management. AD involves a series of biological processes in which organic matter is broken down and transformed into biogas. Food wastes have a high biomethane production potential owing to their high organic matter contents. The most important parameters on the biomethane production, including feedstock characteristics (nutrient content, particle size, and inhibitory compounds) and process parameters (process configuration, temperature, Ph, retention rate, organic bounding, hydrogen concentration, moisture content, organic loading rate, and inoculums) are fully discussed. Due to problems related to efficient biogas production, an effective methane fermentation of food waste by mixing wood chips with feedstock to minimize the sludge generation during the process is proposed.