The increase in consumption of resources has led to more waste being generated, which then needs to be managed at the end of their life-cycle as waste. Current practices of waste management are not efficient as they lead to a release of emissions and a loss of value that is present in the resource, which is discarded as waste. New legislation for efficient waste management practices has been established, however, adopting them is hampered by factors, one of which is the high cost of these solutions. However, incentive-based approaches can be used to address this problem. This research explores the role of institutional incentives in the form of property rights bundles for such cases. Property rights are a set of formal and informal rules that define how resource allocation is done, while property rights bundles are the set of one or more property rights tied together. As per academic literature, a clear allocation of property rights leads to an economically efficient distribution of costs, benefits, risks and responsibilities associated with a resource. Based on these aspects, this research explores the influence of property rights bundles in the case of collective ownership of waste processing infrastructure by companies. Through collective ownership of the infrastructure, the investment cost would be distributed among those using the resource, thereby reducing the share of investment per company and addressing the challenge of high investment costs. Furthermore, in this situation of collective ownership, property rights need to be defined clearly so that there are no conflicts among the participants at later stages. The research is based on a case study of a few companies in Amsterdam, who are attempting to set up an initiative to improve the waste management practice in the region. For this purpose, they plan to invest collectively in a waste-processing infrastructure. This research thus explores the role of property rights in this regard. The literature on property rights forms the theoretical foundation of the research, along with the Theory of Planned Behaviour, which is the behavioural theory chosen to analyse the decision-making of the companies. The case study was analysed using the Institutional Analysis and Development framework. An agent-based model was built based on the insights obtained from these concepts to capture the interaction between the property rights and the characteristics of the companies, such as the amount of waste generated by them, the amount of budget they hold, etc. The influence of property rights bundles was analysed using the attributes of property rights: robustness, strength, duration and excludability. The results obtained were analysed using the defined Key Performance Indicators: Joining Ratio, Number of Participants and Number of times the initiative is started. It was found that for the case of the Amsterdam Zuidoost initiative, providing property rights bundles of claimants and proprietors as incentives leads to an increase in the number of participants that join the initiative. However, due to lack of statistical significance between the distributions, we cannot determine which of the two has a higher influence. Furthermore, the influence of the other property rights bundle could not be verified due to lack of statistical significance in the distribution.
MULTIFILE
The purpose of the model is to explore the influence of the design of circular business models (CBMs) on CBM viability. The model represents an Industrial Symbiosis Network (ISN) in which a processor uses the organic waste from suppliers to produce biogas and nutrient rich digestate for local reuse. CBM viability is expressed as value captured (e.g., cash flow/tonne waste/agent) and the survival of the network over time (shown in the interface).In the model, the value captured is calculated relative to the initial state, using incineration costs as a benchmark. Moderating variables are interactions with the waste incinerator and actor behaviour factors. Actors may leave the network when the waste supply for local production is too low, or when personal economic benefits are too low. When the processor decides to leave, the network fails. Theory of planned behaviour can be used to include agent behaviour in the simulations.
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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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