Abstract: Waste management has become a global concern for both developed and developing countries. Food waste (FW) causes tremendous environmental, economic, and great social influence, thus studies on food waste are essential and meanwhile very complex according to Food and Agriculture Organization of the United Nation. Countries have adopted different methods and technologies for both treatment and disposal of food waste from landfilling, composting, incineration and anaerobic digestion (AD). However, recently the first three methods have been questioned in terms of their environmental