In the 21st century, waste has become the primary concern for manufacturing processes and industries. Waste management is critical for controlling many types of waste, including solid, liquid, and gaseous forms. The manufacturing of carpets and their uses is a substantial source of waste. The generation of waste leads to an imbalance of the environmental conditions and has hazardous effects on the ecology. The principle of "waste to wealth" could be helpful for manufacturing industries and human beings. This book is comprised of four parts. Part One begins with an overview of the subject, focusing on general issues and technologies relevant to carpet waste. Part Two demonstrates the potential of methodology for developing materials made from discarded carpet polymer composites. Part Three discusses the use of novel nanomaterials to recycle discarded materials. Finally, the last section of the book discusses possible uses for recycled carpet composite structures that may act as a noise barrier in the sound insulating wall tiles, and in many more applications like floor tiles, road barriers, tooling, and fire-retardant instrumentation.