The Role of Chemical Engineering in Advancing the Circular Economy: Strategies for Waste Valorization and Resource Recovery
Hycent Jacob
*
Department of Chemical Engineering, Rowan University, United States of America.
Enoch Nii-Okai
Department of Geological and Mining Engineering and Science, Michigan Technological University, Houghton, MI, United States of America.
Alfred Yeboah
Department of Geological and Mining Engineering and Science, Michigan Technological University, Houghton, MI, United States of America.
Victor Sodje
Department of Mechanical and Aerospace Engineering, University of Kentucky, United States of America.
Gopal Fosu Oppong Wiafe
Department of Mining and Minerals Engineering, University of Alaska Fairbanks, United States of America.
Nwandu Amarachukwu Immaculate
Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Nigeria.
Ayodeji Olayode
Civil Engineering Department, Federal University, Oye-Ekiti, Ekiti State Nigeria.
*Author to whom correspondence should be addressed.
Abstract
The transition toward a Circular Economy (CE) presents a transformative solution to global sustainability challenges by promoting resource efficiency, waste minimization, and material regeneration. This study explores the pivotal role of chemical engineering in advancing circular practices through innovative waste valorization and resource recovery strategies. Key technologies—including biomass conversion, plastic and electronic waste recycling, and food waste bioprocessing—are analyzed for their capacity to mitigate environmental impacts and close material loops. Chemical engineering principles such as catalysis, separation processes, and process intensification underpin these approaches, enhancing energy efficiency and resource utilization. Integration of digital tools, artificial intelligence (AI), and system optimization further enables real-time process control and sustainability assessment. However, widespread CE implementation faces barriers including technological limitations, high capital costs, and fragmented regulations. Overcoming these challenges requires interdisciplinary collaboration among industry, academia, and policymakers to develop scalable, cost-effective solutions. The study emphasizes the importance of next-generation catalysts, bio-based processing, and data-driven systems in achieving a resilient, low-waste industrial future. By bridging science, technology, and policy, chemical engineering can catalyze the global transition to a sustainable and circular economy.
Keywords: Circular economy, chemical engineering, waste valorization, resource recovery, sustainable technologies, process intensification