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This paper aims to investigate how the sustainable development is pursued by manufacturing companies according to the extant literature, especially by focusing on Circular Economy (CE) paradigm that is considered one of the major drivers for sustainability. Indeed, this research aims to study how CE principles have been adopted in the manufacturing sector leading towards the creation of Circular Manufacturing (CM) strategies. To achieve this goal, a systematic literature review has been conducted. Scopus and Web of Science are the scientific databases used for the review process. The 215 papers selected for the review were analysed through a theoretical framework developed by the authors. This framework enabled to individualize the research streams and the perspectives through which CE strategies adopted by manufacturers have been studied in the extant scientific literature. These research streams are technologies, and evaluation methods and models. Besides, both of these two are studied under two different lenses since they both are mutually considered supportive tools to shift or to maintain a circular system. To conclude, one of the major contributions of this literature review is to provide a clearer definition of CM and to figure out how CM strategies have been addressed by academics in the scientific literature, with the final aim to reduce the confusion emerged in the extant literature around this concept. Last, this review elucidates some scientific literature gaps and suggests future research directions. • The review identified twelve circular economy strategies adopted by manufacturers. • Circular manufacturing definition based on a systematic literature review. • Circular manufacturing research streams are technologies and assessment methods. • Data exploitation and standardization would ease circular manufacturing adoption. [ABSTRACT FROM AUTHOR]

Industrial manufacturing is the largest end-use sector in terms of both final energy demand and greenhouse gas emissions (more than 30% of the total); its increase is rapidly altering the world climate. The need to mitigate the environmental impacts of manufacturing processes makes energy efficiency a key success factor for sustainable production. Accordingly, the scientific community's interest in energy management has grown considerably, resulting in several literature reviews on energy modelling and production systems analysis, emissions calculation, sustainability tools and benchmarking techniques. However, a comprehensive analysis of methods and tools aimed at improving energy awareness and assessing their effects on energy efficiency is lacking. To address this gap, this paper undertakes a systematic literature review of energy assessment methods and tools. From the 1367 papers retrieved by searching scientific literature databases, 64 scientific articles met the inclusion criteria and were analysed in detail. The study aims to provide scholars with a picture of the current state of scientific research and to identify the scientific works that could help industry practitioners in energy management. Following the ISO 50001 framework, the methods and tools were divided into three main groups (i.e. energy analysis, energy evaluation and energy-saving measures methods) and the specific findings relating to each group were synthesized. Finally, the paper addresses unresolved issues and challenges and makes suggestions for future research directions. • A systematic literature review of energy assessment methods and tools are provided. • Relevant concepts, themes and characteristics has been summarized. • A classification of energy assessment methods and tools has been presented. • The limits and the possible solution strategies to overcome them are discussed. [ABSTRACT FROM AUTHOR]