Key Features: 1. Presents unconventional waste treatment to increase biotic resource efficiency as against standard crop and forestry residues 2. Focuses on promoting sustainability concept within different kinds of waste biorefinery 3. Discusses various systems like microalgal, poultry and microbial refineries 4. Includes techno-economic analysis for waste streams in biofuel production 5. Covers topics like sewer mining, gas fermentation and food waste management