This book comprises of papers from the International Conference on Advances and Innovations in Recycling Engineering (AIR-2021). It highlights indispensable issues, challenges and recommended solutions related to solid waste management and sustainability. The contents deal with recommended solutions and the gap between environmental laws related to recycling of waste and environment threat. Weighing the global economy loss via compromises on industrial growth versus environment provide another dimension to the study and press on the need for alternative practices. Impact on biodiversity conservation and natural resources pollutants is also highlighted. This book is a useful guide for academics, researchers, and policymakers.