Enhancing Circularity in Urban Waste Management: A Case Study on Biochar from Urban Pruning

This study investigates the potential of biochar production from urban pruning waste as a sustainable solution within a circular economy framework. Urban green waste, often underutilized, typically increases landfill burden and greenhouse gas emissions. Converting pruning waste into biochar reduces landfill reliance while enabling stable carbon sequestration. Utilizing the circular triple-layered business model canvas (CTLBMC), biochar's impact is evaluated across economic, environmental, and social dimensions. This structured analysis is based on a theoretical framework and uses secondary data to illustrate the model's applicability. As a result of the conducted studies, it was found that biochar derived from urban green waste not only improves soil phytotoxicity and enables long-term carbon sequestration, but also offers economic benefits, including municipal cost savings in waste management and diversified revenue streams from biochar sales. Socially, biochar production promotes community engagement in sustainable practices and supports urban greening initiatives, enhancing local ecosystems. The findings suggest that biochar production, assessed through the CTLBMC framework, represents a viable circular business model. This approach provides significant environmental, economic, and social benefits over conventional disposal, offering valuable insights for policymakers, waste management professionals, and urban planners advancing circular economy solutions.