This book comprises 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 provides another dimension to the study and press on the need for alternative practices. The impact on biodiversity conservation and natural resources pollutants is also highlighted. This book will be a useful guide for academics, researchers, and policymakers working in the fields of waste management.