Facilitating industrial symbiosis to achieve circular economy using value-added by design: A case study in transforming the automobile industry sheet metal waste-flow into Voronoi facade systems

2019 ◽  
Vol 234 ◽  
pp. 1033-1044 ◽  
Author(s):  
Ahmed K. Ali ◽  
Yi Wang ◽  
Jorge L. Alvarado
2021 ◽  
Vol 9 ◽  
Author(s):  
Elizabeth J. Abraham ◽  
Farah Ramadan ◽  
Dhabia M. Al-Mohannadi

Growing climate change concerns in recent years have led to an increased need for carbon dioxide emission reduction. This can be achieved by implementing the concept of circular economy, which promotes the practice of resource conservation, emission minimization, and the maintenance of sustainable revenue streams. A considerable amount of carbon dioxide emissions is a consequence of stationary sources from industrial processes. These emissions can be reduced using carbon capture utilization and storage (CCUS) or reduced at source by using emission free renewable resources. The method developed within this work uses mixed integer linear programming (MILP) to design sustainable clusters that convert seawater (including waste brine), air, and waste carbon dioxide emissions to value-added products with sunlight as the main energy source. In this way, circular economy is employed to minimize fresh resource consumption and maximize material reuse. The potential of this work is demonstrated through a case study, which shows that an industrial park may be profitable while adhering to strict emission and material constraints.


BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 5226-5245
Author(s):  
Anna R. Pitti ◽  
Omar Espinoza ◽  
Robert Smith

Circular economy production, or upcycling of traditional waste products, has evolved in alignment with consumer driven accountability and demand for environmentally friendly alternatives. In recent years, industries have emerged to upcycle materials for value-added production. This paper presents case study interview results used to gather information about current marketing practices within the urban and reclaimed wood industries, which upcycles trees felled in urban areas and wood generated through construction and demolition. Firms reported entering the industry for a variety of reasons, most frequently surrounding intangible raw material and product attributes. Interviewees reported generating primarily made-to-order products, made-to-stock furniture, mantels, slabs, lumber, beams, flooring, millwork, and other products priced largely in line with their competition. Promotion consisted primarily of word of mouth, company webpages, social media, and event participation, such as craft fairs or trade shows. Firms relayed messages of sustainability, local production, quality, and emotional value. Companies primarily participate in direct, retail, or online sales, which have become increasingly prevalent. This paper outlines opportunities to explore, as well as barriers to overcome through examination of strengths, weaknesses, opportunities, and threats present in the internal and external environments of the urban and reclaimed wood industries.


2020 ◽  
Vol 12 (8) ◽  
pp. 3466 ◽  
Author(s):  
Nadia Palmieri ◽  
Alessandro Suardi ◽  
Vincenzo Alfano ◽  
Luigi Pari

This study aims to analyze the economic and environmental sustainability of a case study of an energy power plant that produces electricity from pruning residues of olive groves from nine municipalities in southern Italy. To assess the economic sustainability of the agro-energetic chain, the profitability and efficiency ratios are calculated. Moreover, the GHG emissions of the agro-energetic pruning supply chain due to both the pruning collection at the field level, and their combustion for energy production at the power plant, are calculated. To put together the environmental and economic evaluations, the ecoefficiency ratio was calculated to measure the value added per 1Mg of GHG emitted into the atmosphere. The findings show the whole agro-energetic chain, namely the power plant and the collection company have both a good return on owner’s equity (ROE) ratio (15.89% and 31.48%, respectively) and ROI ratio (4.34% and 6.14% respectively). Moreover, the power plant’s ecoefficiency ratio (2.64€ per 1Mg of GHG) is slightly lower than harvest firm one (2.91€ per 1Mg of GHG). The findings could be useful to develop new business models based on the circular economy concept. In fact, the business model proposed could push entrepreneurs towards new income opportunities, at the same time, helping local farms and reducing the environmental impacts.


2018 ◽  
Vol 202 ◽  
pp. 1167-1178 ◽  
Author(s):  
Rhys G. Charles ◽  
Peter Douglas ◽  
Jenny A. Baker ◽  
Matthew J. Carnie ◽  
James O. Douglas ◽  
...  

2020 ◽  
Vol 12 (20) ◽  
pp. 8423
Author(s):  
John Rincón-Moreno ◽  
Marta Ormazabal ◽  
Maria J. Álvarez ◽  
Carmen Jaca

Defining the circular economy (CE) as a material and energy model coincides with the definition given by multiple authors in which Industrial Symbiosis (IS) has been deemed as a foundational strategy to support the implementation of the CE. The consumption of secondary materials is essential to achieve a successful transformation from a linear economy to a CE focused on IS practices. In this scenario, small and medium enterprises (SMEs) play a major role as stakeholders in developing CE systems as it is not possible to create this model with each company working in isolation. However, there is a lack of empirical studies on the role played by relevant local stakeholders such as individual firms interacting in the development of a local CE system. This study aimed to study the challenges that SMEs face in developing a CE system. A case study is selected as a research strategy using a mixed-method approach: a sequential quantitative (questionnaire) and qualitative (semi-structured interviews) data collection techniques were employed for this research. It was observed that an absence of inter-organisational collaboration and a misunderstanding of the roles played by SMEs may impede the implementation of a local CE system level.


Author(s):  
Tamara Merkulova ◽  
Kateryna Kononova ◽  
Olena Titomir

TAPPI Journal ◽  
2012 ◽  
Vol 11 (8) ◽  
pp. 17-24 ◽  
Author(s):  
HAKIM GHEZZAZ ◽  
LUC PELLETIER ◽  
PAUL R. STUART

The evaluation and process risk assessment of (a) lignin precipitation from black liquor, and (b) the near-neutral hemicellulose pre-extraction for recovery boiler debottlenecking in an existing pulp mill is presented in Part I of this paper, which was published in the July 2012 issue of TAPPI Journal. In Part II, the economic assessment of the two biorefinery process options is presented and interpreted. A mill process model was developed using WinGEMS software and used for calculating the mass and energy balances. Investment costs, operating costs, and profitability of the two biorefinery options have been calculated using standard cost estimation methods. The results show that the two biorefinery options are profitable for the case study mill and effective at process debottlenecking. The after-tax internal rate of return (IRR) of the lignin precipitation process option was estimated to be 95%, while that of the hemicellulose pre-extraction process option was 28%. Sensitivity analysis showed that the after tax-IRR of the lignin precipitation process remains higher than that of the hemicellulose pre-extraction process option, for all changes in the selected sensitivity parameters. If we consider the after-tax IRR, as well as capital cost, as selection criteria, the results show that for the case study mill, the lignin precipitation process is more promising than the near-neutral hemicellulose pre-extraction process. However, the comparison between the two biorefinery options should include long-term evaluation criteria. The potential of high value-added products that could be produced from lignin in the case of the lignin precipitation process, or from ethanol and acetic acid in the case of the hemicellulose pre-extraction process, should also be considered in the selection of the most promising process option.


Author(s):  
Susan EVANS

This case study explores the strategic business opportunities, for Lane Crawford, an iconic luxury department store, to transition in a circular economy towards sustainability. A new experimentation framework was developed and conducted among cross departmental employees, during a Design Lab, with intention to co-create novel Circular Economy business concepts towards a new vision: the later was a reframe of the old system based on the principles of sustainability; to move beyond a linear operational model towards a circular economy that can contribute to a regenerative society. This work draws on both academic and professional experience and was conducted through professional practice. It was found that innovative co-created concepts, output from the Design Lab, can create radical change in a circular economy that is holistically beneficial and financially viable; looking forward to extract greater value a)Internal organization requires remodeling to transform towards a circular economy; b)Requirement for more horizonal teams across departments vs solely vertical; c)New language and relationships are required to be able to transition towards a circular economy; d)Some form of physical and virtual space requirements, for cross-disciplinary teams to come together to co-create; e)Ability to iterate, learn and evolve requires agency across the business


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