Waste-derived Nanoparticles: Synthesis, Applications, and Sustainability embarks on an illuminating exploration at the intersection of waste management and nanotechnology. Delving deep into the realm of nanoparticle synthesis, this comprehensive volume meticulously examines various waste sources, ranging from industrial residues to electronic waste, uncovering their potential for sustainable innovation. Through detailed discussions on synthesis methodologies and characterization techniques, each chapter offers insights into the intricate processes involved in transforming waste materials into functional nanoparticles. Beyond synthesis, the book ventures into the diverse applications of waste-derived nanoparticles, offering transformative solutions to pressing environmental challenges. From revolutionizing wastewater treatment to combating air pollution and advancing energy technologies, these applications hold promise for a greener future. With a forward-looking perspective, this book envisions a shift toward a circular economy, where waste materials are not only repurposed but also contribute to a more sustainable and environmentally conscious world. This book serves as a beacon, guiding us toward a future where waste becomes a valuable resource in our quest for a cleaner and healthier planet.