Sustainability Assessment of Circular Technologies in Agriculture: Overview of Evaluation Methodologies and Research Challenges

Global demand for food is expected to grow significantly by 2050, underlying the urgency of a sustainable transition in agriculture. In this context, the Circular Economy (CE) paradigm emerges as a promising strategy. This transition is still ongoing, underscoring the importance of sustainability assessment as the first crucial step in supporting this process effectively. Therefore, comprehensive and robust evaluation tools and methodologies are necessary to support effective decision-making processes in this context. This study addresses this topic by conducting a literature review focused on the main evaluation methodologies adopted to assess the sustainability of circular technologies in agriculture, as well as to identify emerging research trends and to identify current knowledge gaps. Therefore, the main objective of this research is to establish a well-defined framework that starting from existing researches, it will support the development of future research directions. The performed review identifies Life Cycle Assessment (LCA) as the most applied methodology for environmental impact assessment, due to its ability to analyze environmental impacts and resources consumption throughout the entire life-cycle of a product, followed by Multi-Criteria Analysis (MCA) and performances-based models for their capacity of integrating and managing many dimensions (environmental, economic, and social) within the evaluation process. Emerging trends highlight the increasing adoption of computational approaches, such as System Dynamics (SD), facilitating a more comprehensive assessment of complex agricultural systems. Despite this increasing attention, the review addresses the significant gap, or rather, the limited management of stakeholders’ conflicts and synergies. This gap will inform potential research directions within the Agritech project, especially regarding the development of Social Multi-Criteria Evaluation (SMCE) to integrate stakeholders’ perspectives in the sustainability assessment of circular technologies.