This course aims to provide a multidisciplinary approach, including engineering, management, and sustainability sciences, for the development of recycling and upcycling technologies towards a ustainable future. A circular approach is needed as a significant contribution to a more sustainable, low-carbon, resource-efficient, and competitive circularity by closing the loop on product lifecycles through greater recycling and the use of recycled materials. The course will cover detailed discussions on how waste thermosets thermoplastics instead of landfilling are converted into value-added products by recycling processes, and how unrecyclable materials like carbon fiber-based composite can be recycled and how direct and captured CO2 from air and oceans can be converted into chemicals and raw materials. Additionally, cradle-to-grave life cycle assessment approaches will be explained to measure the environmental impact of circular products, such as the release of CO2 emissions. This course will discuss the implications of increased resource efficiency and circularity for sustainable development, addressing in more detail design, manufacturing, use,reuse, repair, remanufacturing, recycling,and sustainable waste management It will also examine the contribution of recycling to the sustainability of industrial processes and sustainable development, considering the increasing demand for green products and environmental regulations in various sectors.