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Growing environmental concerns caused by natural resource depletion and pollution need to be addressed. One approach to these problems is Sustainable Development, a key concept for our society to meet present as well as future needs worldwide. Manufacturing clearly has a major role to play in the move towards a more sustainable society. However it appears that basic principles of environmental sustainability are not systematically applied, with practice tending to focus on local improvements. The aim of the work presented in this paper is to adopt a more holistic view of the factory unit to enable opportunities for wider improvement. This research analyses environmental principles and industrial practice to develop a conceptual manufacturing ecosystem model as a foundation to improve environmental performance. The model developed focuses on material, energy and waste flows to better understand the interactions between manufacturing operations, supporting facilities and surrounding buildings. The research was conducted in three steps: (1) existing concepts and models for industrial sustainability were reviewed and environmental practices in manufacturing were collected and analysed; (2) gaps in knowledge and practice were identified; (3) the outcome is a manufacturing ecosystem model based on industrial ecology (IE). This conceptual model has novelty in detailing IE application at factory level and integrating all resource flows. The work is a base on which to build quantitative modelling tools to seek integrated solutions for lower resource input, higher resource productivity, fewer wastes and emissions, and lower operating cost within the boundary of a factory unit.

Sustainable manufacturing appears to be a rapidly developing field and it would be expected that there is a growing body of knowledge in this area. Initial examination of the literature shows evidence of sustainable work in the areas of product design, supply chain, production technology and waste avoidance activities. Manufacturers publish metrics showing significant improvements in environmental performance at high level but information on how these improvements are achieved is sparse. Examining peer reviewed publications focused on production operations there are few cases reporting details and there has been little prior analysis of published sustainable manufacturing activity. Moreover, the mismatch between academic and practitioner language leads to challenges in interpretation. This paper captures and analyses the types of sustainable manufacturing activities through literature review. In turn this can help manufacturers to access examples of good practice and help academics identify areas for future research.

Additive manufacturing is heralded as a revolutionary process technology. While it has yet to cause a dramatic transformation of the manufacturing system, there are early signs of how the characteristics of this novel production process can improve resource efficiency and other sustainability aspects. In this paper, we draw on examples from a wide range of products and industries to understand the role of additive manufacturing in sustainable industrial systems. We identify four main areas in which the adoption of additive manufacturing is leading to improved resource efficiency: (1) product and process design; (2) material input processing; (3) make-to-order product and component manufacturing; and (4) closing the loop.

An organisation's sustainability performance is influenced by its capabilities (skills, resources and competences) which in turn affects the performance of its entire supply chain. However, recent research has not sufficiently explored the convergence of dynamic capabilities, circular economy, resilience and Industry 4.0 concepts for manufacturing supply chains. Therefore, this study aims to identify how dynamic capabilities theory can enable circular and resilient supply chains. A qualitative research process was deployed in three stages: literature review, European project and nine expert interviews. Key investigative variables were used to identify capabilities used in manufacturing, and five research propositions were developed to address the gaps found in literature. The empirical data helped reveal challenges to circular economy implementation and validate the literature findings. The main contributions include a dynamic capabilities model, a causal relationship model and five research propositions for circular economy implementation.

The rapid development and implementation of digitalization in manufacturing has enormous impact on the environment. It is still unclear whether digitalization has positive or negative environmental impact from applications in manufacturing. Therefore, this study aims to discuss the overall implications of digitalization on environmental sustainability through a literature study, within the scope of manufacturing (product design, production, transportation, and customer service). The analysis and categorization of selected articles resulted in two main findings: (1) Digitalization in manufacturing contributes positively to environmental sustainability by increasing resource and information efficiency as a result of applying Industry 4.0 technologies throughout the product lifecycle; (2) the negative environmental burden of digitalization is primarily due to increased resource and energy use, as well as waste and emissions from manufacturing, use, and disposal of the hardware (the technology lifecycle). Based on these findings, a lifecycle perspective is proposed, considering the environmental impacts from both the product and technology lifecycles. This study identified key implications of digitalization on environmental sustainability in manufacturing to increase awareness of both the positive and negative impacts of digitalization and thereby support decision making to invest in new digital technologies.

Manufacturers are under increasing pressure from stakeholders and stricter regulations to reduce the environmental impact of their activities. The research on sustainability in general and on sustainable manufacturing in particular is rapidly developing and crossing disciplinary boundaries. There are numerous welldeveloped concepts for industrial sustainability which can contribute to sustainable manufacturing, but there is a gap in knowledge on how to achieve the desired conceptual aims at operational level. There also is a growing volume of industrial cases on sustainable manufacturing practices, but little is known on how these improvements were conceived. Additionally, the means by which improvement options can be reproduced and modelled is lacking. This paper presents a tactics library to provide a connection between those generic sustainability concepts and more specific examples of operational practices for resource efficiency in factories. Then a factory modelling approach is introduced to support the use of tactics by combining the analysis of building energy and manufacturing process resource flows. Finally a step-by-step guide in the form of a workflow for factory modelling and resource flow analysis is presented and tested via a prototype tool. The aim was to provide guidelines for manufacturers to undertake the sustainability journey by guiding them through the steps of factory modelling, resource flow analysis and improvement opportunities identification. The paper has implications for researchers and practitioners as it demonstrates how factories can sustainably be improved in a structured, systematic and cross-functional way. This contributes to the need for expanding the scope of analysis beyond functional boundaries to apply sustainability at factory level.