Urban areas provide a promising context for upcycling due to the concentration of consumers and existence of bulky waste resources. Hence, upcycling initiatives emerge across European cities, but little is known about their manifestations. Building on interviews with twenty-four stakeholders from the urban upcycling ecosystem and three focus groups sessions, a morphological model was created with internal and external business model characteristics to analyse a database of 172 collected Dutch urban upcycling initiatives in the furniture and interior sector. The morphological analysis led to eleven urban upcycling manifestations with distinct business model characteristics that make up five generic categories and a landscape of urban upcycling which facilitate future research into the topic. A research agenda to study quantitative implications, regional differences, collaborative experimentation and scaling strategies of urban upcycling is proposed. Practically, the typology may facilitate policy makers and practitioners to create, scale or accelerate urban upcycling initiatives.
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From the article: "ABSTRACT: The research group Supply Chain Redesign in the Built Environment of HU University of Applied Sciences is working on research that combines principles of the circular economy with open source architectural design & urban planning. The aim is finding new ways to re-use demolition waste and recycled materials in small scale urban area developments. And to “democratize” traditional processes in the built environment. Different recent studies have shown the potential benefits, such as a reduction of emissions. In “Hof van Cartesius”, a practical case-study in Utrecht, the ambitions and implications of this approach are being questioned, investigated and tested."
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Urban commons is presented as a challenge of collaborative governance. This study delivers a normative perspective to analyse and evaluate processes and outcomes of the governance of urban commons. It demonstrates the development and application of the perspective in action research on Amsterdam’s Zero Waste Lab case, as a way to better understand successful and failing institutions in a concrete practice and to design interventions for improvement. Consequently, the (im)plausibility of collective action in urban communities and the participation of public actors present dilemmas for urban commons. The study specifically synthesises urban commons and collaborative governance scholarship and relates also in general to the transition towards co-creation in governing the city, e.g. in public administration or planning.
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Construction and Demolition Waste (CDW) is the main driver of resource consumption and waste generation in Europe. Although most European countries achieved 70% recovery rate of CDW, the majority is used for backfilling. Therefore, opportunities for Circular Economy (CE) practices in CDW management are underexploited. This research identifies the innovative practices, barriers, and enablers for developing tailored-made designs of Urban Resource Centre (URC) for managing CDWs in four European cities namely Riga, Tartu, Kavala, and Barcelona. Qualitative methods using multiple case studies were used to draw generalizations from cases. Data was collected from reports and interviews with different stakeholders, and a validation workshop for designing URC of each city. Current innovative practices include recycling and upcycling of CDWs; use of green points, exchange platforms, and waste management apps; repair cafés; selective demolition; and (pilot) initiatives on resource centers that function as material exchange point, recycling center, workstation for repair and creative ideas, and prototyping hub, among others. The identified barriers and enablers can be categorized as governmental, market, and individual factors. First, local governments (municipalities) play a key role for facilitating CDW management via both support such as provision of subsidies, green procurement, and mandatory waste sorting, and through strict regulatory requirements. Second, URCs must be locally rooted with inclusion of citizens, grass roots initiatives, and schools/universities to increase community acceptance, awareness, and education on CDW management. Third, partnerships with local stakeholders, such as repair cafes, waste management companies, and local NGOs, is needed to operate the URCs both in short- and long-terms. And fourth, the creation of niche markets such as linking localism (e.g. locally crafted CE stores) and supplying to businesses in need of CDWs, can support the operation of URCs. The identified barriers and enablers can help further improve the design of URCs for each city.
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This research contributes to understanding and shaping systems for OFMSW separation at urban Small and Medium Enterprises (SMEs, such as offices, shops and service providers). Separating SMEs’ organic fraction of municipal solid waste (OFMSW) is both an opportunity and a serious challenge for the transition towards circular cities. It is an opportunity because OFMSW represents approximately 40% of the total waste mass generated by these companies. It is challenging because post-collection separation is not feasible for OFMSW. Therefore, SMEs disposing of waste should separate their solid waste so that processing the organic fraction for reuse and recycling is practical and attainable. However, these companies do not experience direct advantages from the extra efforts in separating waste, and much of the OFMSW ends up in landfills, often resulting in unnecessary GHG emissions. Therefore, governments and waste processors are looking for ways to improve the OFMSW separation degree by urban companies disposing of waste through policies for behaviour change.There are multiple types of personnel at companies disposing of waste. These co-workers act according to their values, beliefs and norms. They adapt their behaviour continuously, influenced by the physical environment, events over time and self-evaluation of their actions. Therefore, waste separation at companies can be regarded as a Socio-Technical Complex Adaptive System (STCAS). Agent-based modelling and simulation are powerful methods to help understand STCAS. Consequently, we have created an agent-based model representing the evolution of behaviour regarding waste separation at companies in the urban environment. The model aims to show public and private stakeholders involved in solid waste collection, transport and processing to what extent behaviour change policies can shape the system towards desired waste separation degrees.We have co-created the model with participants utilising literature and empirical data from a case study on the transition of the waste collection system of a business park located at a former harbour area in Amsterdam, The Netherlands. First, a conceptual model of the system and the environment was set up through participatory workshops, surveys and interviews with stakeholders, domain experts and relevant actors. Together with our case participants, five policies that affect waste separation behaviour were included in the model. To model the behaviour of each company worker’s values, beliefs and norms during the separation and disposal of OFMSW, we have used the Value-Belief-Norm (VBN) Theory by Stern et al. (1999). We have collected data on waste collection behaviour and separation rates through interviews, workshops and a literature study to operationalise and validate the model.Simulation results show how combinations of behaviour profiles affect waste separation rates. Furthermore, findings show that single waste separation policies are often limitedly capable of changing the behaviour in the system. Rather, a combination of information and communication policies is needed to improve the separation of OFMSW, i.e., dissemination of a newsletter, providing personal feedback to the co-workers disposing of waste, and sharing information on the (improvement of) recycling rates.This study contributes to a better understanding of how policies can support co-workers’ pro-environmental behaviour for organic waste separation rates at SMEs. Thus, it shows policymakers how to stimulate the circular transition by actively engaging co-workers’ waste separation behaviour at SMEs. Future work will extend the model’s purpose by including households and policies supporting separating multiple waste types aimed at various R-strategies proposed by Potting et al. (2016).
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It is of utmost importance to collect organic waste from households as a separate waste stream. If collected separately, it could be used optimally to produce compost and biogas, it would not pollute fractions of materials that can be recovered from residual waste streams and it would not deteriorate the quality of some materials in residual waste (e.g. paper). In rural areas with separate organic waste collection systems, large quantities of organic waste are recovered. However, in the larger cities, only a small fraction of organic waste is recovered. In general, citizens dot not have space to store organic waste without nuisances of smell and/or flies. As this has been the cause of low organic waste collection rates, collection schemes have been cut, which created a further negative impact. Hence, additional efforts are required. There are some options to improve the organic waste recovery within the current system. Collection schemes might be improved, waste containers might be adapted to better suit the needs, and additional underground organic waste containers might be installed in residential neighbourhoods. There are persistent stories that separate organic waste collection makes no sense as the collectors just mix all municipal solid waste after collection, and incinerate it. Such stories might be fuelled by the practice that batches of contaminated organic waste are indeed incinerated. Trust in the system is important. Food waste is often regarded as unrein. Users might hate to store food waste in their kitchen that could attract insects, or the household pets. Hence, there is a challenge for socio-psychological research. This might also be supported by technology, e.g. organic waste storage devices and measures to improve waste separation in apartment buildings, such as separate chutes for waste fractions. Several cities have experimented with systems that collect organic wastes by the sewage system. By using a grinder, kitchen waste can be flushed into the sewage system, which in general produces biogas by the fermentation of sewage sludge. This is only a good option if the sewage is separated from the city drainage system, otherwise it might create water pollution. Another option might be to use grinders, that store the organic waste in a tank. This tank could be emptied regularly by a collection truck. Clearly, the preferred option depends on local conditions and culture. Besides, the density of the area, the type of sewage system and its biogas production, and the facilities that are already in place for organic waste collection are important parameters. In the paper, we will discuss the costs and benefits of future organic waste options and by discussing The Hague as an example.
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This paper presents challenges in city logistics for circular supply chains of e-e-waste. Efficient e-waste management is one of the strategies to save materials, critical minerals, and precious metals. E-waste collection and recycling have gained attention recently due to lower collection and recycling rates. However, implementing circular urban supply chains is a significant economic transformation that can only work if coordination decisions are solved between the actors involved. On the one hand, this requires the implementation of efficient urban collection technologies, where waste collection companies collaborate with manufacturers, urban waste treatment specialists, and city logistics service providers supported by digital solutions for visibility and planning. On the other hand, it also requires implementing urban and regional ecosystems connected by innovative CO2-neutral circular city logistics systems. These systems must smoothly and sustainably manage the urban and regional flow of resources and data, often at a large scale and with interfaces between industrial processes, private, and public actors. This paper presents future research questions from a city logistics perspective based on a European project aimed at developing a blueprint for systemic solutions for the circularity of plastics from applications of rigid PU foams used as insulation material in refrigerators.
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Within European cities, entrepreneurs engage in private and public collaborative initiatives that work towards reducing local solid waste streams (Futurium, 2019). Furniture and interior design products account for nearly 50% of these waste streams, making them a key priority on the EU agenda to prevent climate change (Vanacore et al, 2021). New legislation to extend producer responsibility and reduce waste incineration is developing on a national level (PBL, 2021) and collaborative initiatives for urban upcycling are emerging (Ministerie I&W, 2023; Futurium, 2019). Business models to support upcycling are evolving, but their configuration and effectiveness is little understood.
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Upcycling has been embraced by circular economy enthusiasts, policy-makers and collaborative initiatives across Europe. Early studies describe upcycling as a concept aimed at resource conservation by keeping products, components and materials at their highest potential value across consecutive product lifecycles, with zero-negative or even potential positive impact on the natural environment. Similarly, more recent literature on the circular economy views upcycling as a strategy to slow and close resource cycles through product life-extension approaches, such as reuse, repair, refurbishment, remanufacturing and repurpose. With growing environmental concerns, upcycling has become a re-emerging theme in literature and practice. Cities offer opportunities for an increasing number of upcycling initiatives, but little is known about what manifestations of upcycling occur specifically in urban areas or how these urban upcycling initiatives emerge. For example, so-called Urban Resource Centers seek to tackle challenges in urban solid waste management by encouraging entrepreneurs to create value from local waste streams. Therefore, our objective is to address this literature gap and explore manifestations of upcycling in a city context by means of qualitative research, following a case-study approach based on data collected from research archives and 17 preliminary interviews with entrepreneurs and experts in urban upcycling of furniture and interior design products. This study contributes to a structured overview of urban upcycling initiatives and the internal and external factors that drive entrepreneurial initiatives and development. Future work will build on this study to make urban upcycling initiatives more widespread and impactful to deliver on their environmental and social goals.
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Environmental concerns and urbanization pressures are driving demand for more efficient reverse logistics in city environments, where space constraints and dense populations create unique challenges. Polyurethanes (PU), used widely in insulation, electronics, and automotive industries, are integral to circular supply chain discussions due to their low recycling rates. This study emphasizes the challenges of urban reverse logistics for the disposal and collection of refrigerators in countries with different waste management systems. In the paper qualitative and quantitative methods have been applied. Based on the research carried out, it was shown how complex the reverse logistics process is in the city concerning waste such as fridges. It is influenced by, among other things, regulations at EU and national level, cooperation between stakeholders, consumer awareness and education, and real-time access to information on waste.
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