Microbial and Biochar Technology for Waste Valorization delves into the innovative integration of microbial and biochar technologies, presenting a compelling case for their combined utilization in waste reuse to aid environmental sustainability. The book opens with a discussion of current and emerging environmental issues and the need for implementing integrated microbe-biochar processes to address these. Initial chapters explore the fundamentals of biochar, its sources, synthesis routes, characterization methods, its impact on soil, environment, and water microbiomes, and approaches to biochar production. The book then delves deeper into its role in environmental remediation, its suitability as a microbe carrier and the combination of biochar and microbes for various applications, including microbial fuel cells, biofertilizer, biopesticide, and water treatment processes. The book also highlights the use of machine learning and AI for predicting biochar characteristics, biochar's potential in promoting a circular economy and carbon neutrality, and future directions for biochar-microbe applications. By delving into both foundational knowledge and cutting-edge advances, this book equips readers with the insights and tools needed to drive sustainable solutions in waste valorisation and environmental remediation. Microbial and Biochar Technology for Waste Valorization is the latest volume in the "Developments in Microbial Cell Factories: From Design to Commercial Production book series, and is an invaluable resource for advanced students, researchers, and academics working across microbiology, biotechnology, cell biology, environmental science, environmental and chemical engineering, and related fields. Highlights the synergistic use of biochar and microorganisms for sustainable waste treatment Provides detailed exploration of biochar sources, modifications, and applications for environmental remediation and waste valorization Emphasizes eco-friendly, cost-effective methods for improving soil fertility, carbon sequestration, and bioremediation Features the latest advancements in biochar-microbe technologies for achieving a circular economy