Abstract
The increase in global material demands while having finite natural reserves has made the transition from a linear to a Circular Economy (CE) more crucial. Various approaches have been proposed for such a transition, which closed-loop system is an approach aiming to maximize resource efficiency ensuring that materials are continually reused and recycled, thereby reducing waste and conserving resources. However, there are some obstacles/gaps in the implementation of CE practices, one of them is the lack of a proper Circularity assessment unit, as called Circularity Indicators (CIs). The CIs play a crucial role by enabling to quantify the success of circularity strategies. This paper critically reviews the existing CIs and introduces a novel scoring system that evaluates them against five main circularity categories. This scoring system allows for assessing CI's alignment with core CE principles. Our findings reveal that some CIs demonstrate broad applicability and robustness, while others have more narrowed focuses. This dementated the need for a unified CI that is versatile, comprehensive and integrates various 'R' strategies with the triple bottom line model of sustainability. This scoring system can be used in policy making and business strategy decisions to embed CE in new developments such that support sustainable development.
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