The depletion of fossil fuel reserves and concerns for environmental degradation due to the fossil fuel burning have led the scientific community to look for alternative renewable energy sources. Among the available renewable energy sources, bioenergy derived from biomass and waste resources have great potential to not only prevent environmental pollution but also be a carbon neutral energy source. In addition, adaptation of this technology could streamline new green products, alternative energy sources into real-world applications and promote a circular economy towards zero-waste approach. This book tries to bridge the existing knowledge gap in the area of bioenergy resources. The first two chapters provide introduction to the anaerobic digestion (AD) technologies and direct interspecies electron transfer in AD. The next three chapters are on biomass pretreatment technologies for process improvement. The sixth to eighth chapter discuses biogas and other by-product production from specific wastes such from dairy, food and agricultural solid waste. The following two chapters focuses on the downstream processing of anaerobic digestate and on biochar production. Integration of AD in biorefineries using bioelectrochemical systems, syngas fermentation and electricity production are discussed in the next three chapters. The final two chapters elaborates on life cycle assessment of AD based technologies.   

Part 1: Process fundamentals

Chapter 1: Fundamentals of biofuel production from anaerobic digestion: Metabolic pathways and interferences
Chapter 2: Direct interspecies electron transfer for intensification of biogas production
Part 2: Pretreatment
Chapter 3: Adsorbents for the detoxification of lignocellulosic wastes hydrolysates to improve fermentative processes to bioenergy production
Chapter 4: Pretreatment of lignocellulosic materials to enhance biogas production through anaerobic digestion
Chapter 5: Biogas production from dairy cattle residues - definition of the pretreatment approach through a bibliometric analysis of publications and patents
Part 3: AD of specific waste-streams
Chapter 6: Anaerobic digestion of dairy industry wastewater
Chapter 7: Solid state anaerobic digestion of agricultural waste
Chapter 8: Food waste biorefinery for bioenergy and value-added products
Part 4: Downstream processing for resource recovery
Chapter 9: Valorization ofanaerobic digestate for production of value added products
Chapter 10: Biochar produced from organic waste digestate and its potential utilization for soil remediation: An overview
Part 5: Integration of AD in biorefineries
Chapter 11: Integration of bioelectrochemical systems with anaerobic digestion
Chapter 12: Use of biogas for electricity driven appliances
Chapter 13: Syngas fermentation for bioenergy production: recent advances in bioreactor systems
Part 6: Life cycle analysis
Chapter 14: Up and downstream technologies of anaerobic digestion from life cycle assessment perspective
Chapter 15: Life cycle analysis of anaerobic digestion systems.