With the growth of the world population and the production of more waste, the world needs to implement sustainable waste management to make better use of our resources. Biorefineries are an essential technology in converting biomass into useful materials. This volume provides a comprehensive overview of biorefining processing techniques, technologies, and materials that can use waste products in a number of innovative ways. It covers proven case studies that demonstrate the most advanced and innovative processes and product developments on waste biorefinery principles. This new book also provides valuable data and technologies that consider environmental impacts. This reference book is divided into three sections that provide a thoughtful outlook on technologies associated with waste biorefinery. In the first section, the reader is introduced to recent steps toward renewable and clean energy along with waste-to-energy technologies. The second section of this book is devoted to modern technologies for waste valorization that holds a valuable prospective for a sustainable green world. In the last section of the book, the authors consider the future energy, green products, and waste treatment. This volume is a practical guide for postgraduate scholars and scientists interested in waste biorefinery. Readers will also gain a broader overview on theory and application of this important field.