Production of Bioenergy in the Framework of Circular Economy: A Sustainable Circular System in Ecuador / Vega-Quezada Cristhian, Vega-Quezada Cristhian, Blanco María, Romero Hugo -- The Impact of Biomass Feedstock Composition and Pre-treatments on Tar Formation during Biomass Gasification / John Corton, Blanco-Sanchez P Paula, Zakir Khan, Jon Paul McCalmont, Xi Yu, George Fletcher, Steve Croxton, James Sharp, Manosh C Paul, Ian A I Watson, Iain S Donnison -- Key Pretreatment Technologies for An Efficient Bioethanol Production from Lignocellulosics / Archana Mishra, Sanjoy Ghosh -- Present Status on Enzymatic Hydrolysis of Lignocellulosic Biomass for Bioethanol Production / Arindam Kuila, Vinay Sharma, Vijay Kumar Garlapati, Anshu Singh, Lakshmishri Roy, Rintu Banerjee -- Biological Pretreatment of Lignocellulosic Biomaterials / Sandeep Kaur Saggi, Geetika Gupta, Pinaki Dey -- Anaerobic Digestion and the Use of Pre-treatments on Lignocellulosic Feedstocks to Improve Biogas Production and Process Economics / Laura Williams, Joe Gallagher, David Bryant, Sreenivas Rao Ravella -- Algae: The Future of Bioenergy / Nivas Manohar Desai -- Index -- Also of Interest.