Efficacious Utilization of Food Waste for Bioenergy Generation through the Anaerobic Digestion Method

Abstract

Energy fuels retrieved from biomass utilization are considered to be an economically and environmentally friendly source. In this day and age, bioenergy provides an alternative option to replace traditional fossil-based energy to accomplish energy demand with fewer greenhouse gas emissions into the environment. A huge amount of food waste is produced every year due to mass ethnographic activities. Their potential has been underused and this has led to waste ending up in the garbage. Bioenergy production by anaerobic digestion of cheap substrate provides an effectual approach to cope with this issue. The hydrolysis stage during anaerobic digestion is enhanced by various pretreatment methods, where the disintegration of the waste substrate leads to the enhancement of soluble organics and eases the production of bioenergy. The present review focuses on state-of-the-art knowledge about food waste, its utilization, and its valorization by the action of pretreatment, thereby enhancing anaerobic digestion. Additionally, this review further focuses on the major challenges during the pretreatment method and future recommendations.

The future in the litter bin – bioconversion of food waste as driver of a circular bioeconomy

“…As far as the energy balance is concerned, it is therefore often more economical to digest anaerobically. Here, organic waste from the food industry, such as fruits and vegetable waste, rice and maize straw and coffee husk, form the basis for bio-methanation thanks to their intrinsic methanation potential ( 84 , 85 ). In fact, anaerobic digestion (AD) is one of the most common industrial-scale processes to convert food waste into renewable materials using “biological” means, in contrast, for instance, to pyrolysis.…”