Hindawi Publishing Corporation BioMed Research International Volume 2017, Article ID 2370927, 19 pages http://dx.doi.org/10.1155/2017/2370927 Review Article Food Waste to Energy: An Overview of Sustainable Approaches for Food Waste Management and Nutrient Recycling Kunwar Paritosh, 1 Sandeep K. Kushwaha, 2 Monika Yadav, 1 Nidhi Pareek, 3 Aakash Chawade, 2 and Vivekanand Vivekanand 1 1 Centre for Energy and Environment, Malaviya National Institute of Technology, Jaipur, Rajasthan 302017, India 2 Department of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 101, 230 53 Alnarp, Sweden 3 Department of Microbiology, School of Life Sciences, Central University of Rajasthan Bandarsindri, Kishangarh, Ajmer, Rajasthan 305801, India Correspondence should be addressed to Vivekanand Vivekanand; firstname.lastname@example.org Received 14 November 2016; Revised 29 December 2016; Accepted 12 January 2017; Published 14 February 2017 Academic Editor: JoséL.Campos Copyright © 2017 Kunwar Paritosh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Food wastage and its accumulation are becoming a critical problem around the globe due to continuous increase of the world population. The exponential growth in food waste is imposing serious threats to our society like environmental pollution, health risk, and scarcity of dumping land. There is an urgent need to take appropriate measures to reduce food waste burden by adopting standard management practices. Currently, various kinds of approaches are investigated in waste food processing and management for societal benefits and applications. Anaerobic digestion approach has appeared as one of the most ecofriendly and promising solutions for food wastes management, energy, and nutrient production, which can contribute to world’s ever-increasing energy requirements. Here, we have briefly described and explored the different aspects of anaerobic biodegrading approaches for food waste, effects of cosubstrates, effect of environmental factors, contribution of microbial population, and available computational resources for food waste management researches. 1. Introduction Food Waste. Food waste (FW) (both precooked and leftover) is a biodegradable waste discharged from various sources including food processing industries, households, and hospitality sector. According to FAO, nearly 1.3 billion tonnes of food including fresh vegetables, fruits, meat, bakery, and dairy products are lost along the food supply chain . The amount of FW has been projected to increase in the next 25 years due to economic and population growth, mainly in the Asian countries. It has been reported that the annual amount ofurbanFWinAsiancountriescouldrisefrom278to416 milliontonnesfrom2005to2025.Approximately1.4 billion hectares of fertile land (28% of the world’s agricultural area) is used annually to produce food that is lost or wasted. Apart from food and land resource wastage, the carbon footprint of food waste is estimated to contribute to the greenhouse gas (GHG) emissions by accumulating approximately 3.3 billion tonnes of CO 2 into the atmosphere per year. Conventionally, this food waste, which is a component of municipal solid waste, is incinerated [3–7] or dumped in open area which may cause severe health and environmental issues. Incineration of food waste consisting high moisture content results in the release of dioxins  which may further lead to several environmental problems. Also, incineration reducestheeconomicvalueofthesubstrateasithindersthe recovery of nutrients and valuable chemical compounds from the incinerated substrate. Therefore, appropriate methods are required for the management of food waste . Anaerobic digestion can be an alluring option to strengthen world’s energy security by employing food waste to generate biogas while addressing waste management and nutrient recycling. The quantity of wasted food around the globe and its bioenergy potential via anaerobic digestion were reported earlier [10, 11] and are summarized in this work (Figures 1 and 2).