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1.
A multi-level approach to circular economy progress : linking national targets with corporate implementation
Jan Drofenik, Tine Seljak, Zorka Novak-Pintarič, 2025, original scientific article

Abstract: An integrated top-down methodology for assessing and promoting progress towards a circular economy at macro (national) and micro (company) levels is presented. It is based on the MICRON (MIcroCirculaR ecOnomy iNdex) framework developed by Baratsas et al. (2022) for companies. In this paper, it has been extended to enable a consistent assessment for companies and countries. The methodology facilitates the analysis of key categories: energy, emissions, water, materials, and waste. A quantitative analysis of circularity, including a sensitivity analysis, is conducted at the macro level, identifying critical areas and the most influential factors for the circular economy. Based on this analysis, existing national strategies are evaluated, and implementation plans with specific measures are developed. This is followed by micro-level implementation, which involves techno-economic assessment of circular projects. Using this methodology, coordinated improvements in circularity are achieved at all levels. The methodology was tested in Slovenia, where the national circularity index revealed stable performance over five years, averaging slightly above 50 points out of 100. Analysis identified significant improvement potential in areas such as energy and emissions, aligning with the country's focus on decarbonization and energy efficiency in its climate strategies. At the company level, circularity assessments highlighted critical challenges in renewable energy use and overall energy efficiency. The proposed measures showed potential for significantly improving circularity and reducing emissions, while the results provided valuable insights into the economic feasibility of these transitions.
Keywords: circular economy, integrated assessment framework, micro level, energy transition, renewable energy
Published in DKUM: 10.02.2025; Views: 0; Downloads: 6
.pdf Full text (9,03 MB)

2.
Innovative gasification technology for the circular economy
Teos Perne, Marko Šetinc, Tine Seljak, 2020, original scientific article

Abstract: This article presents a novel gasification technology process in the context of achieving carbon neutrality by establishing a sustainable circulation of carbonaceous materials with a focus on the production of virgin materials from various kinds of waste. The technology can alleviate the key limitations of existing gasification systems, which are the production and management of residue tars. The innovative technology process re-utilizes tars within the reaction itself, enabling an endless cycle of carbon. It also ensures high flexibility for efficiently handling heterogenic waste materials.
Keywords: gasification, carbonaceous, waste, tars, syngas, catalyst, circular economy, carbon, methano
Published in DKUM: 01.12.2023; Views: 452; Downloads: 33
.pdf Full text (2,56 MB)
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