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Circulair wood for the neighbourhood

Since 2016, the Amsterdam Dapperbuurt in the East of Amsterdam, has its own Zero Waste Lab (ZWL), a collection and recycle centre for separated household waste. Drawing on the specific case of wood as a waste-stream, the project Circulair Wood for the Neighbourhood supports the ZWL (initiative of the foundation De Gezonde Stad) realizing two of their ambitions: (A) to transition from recycling to up-cycling; (B) to transition from awareness raising to social engagement and shared ownership. The project is a partnership between the ZWL, the Amsterdam University of Applied Sciences (Research Group Psychology for Sustainable Cities & Research Group Digital Production) and Verdraaid Goed (a Rotterdam based company up-cycling devalued materials by research and design). The project Circulair Wood for the Neighbourhood contains three components/sub-projects, 1) research on the wood waste stream and possibilities for production; (2) research on design possibilities, and (3) research on stakeholder involvement. This is the final report of the sub-project stakeholder involvement led by the research group Psychology for Sustainable Cities. This sub-project specifically examined the psychology behind the decision making process of residents to hand in (or not) separated household wood waste to the ZWL in the neighbourhood of the Dapperbuurt and proposes possible interventions.

Biomethane from hydrogen and carbon dioxide

The project BioP2M came to a close in June 2019 after a consortium of stakeholders in the field of energy transition worked together to research the diverse role of Methane. In this report the results are presented and future plans are discussed.

Sustainability Research Agenda for Leisure, Tourism and Hospitality

Bio-Composieten

Dit boek is het resultaat van het SIA Raak MKB project “Biocomposieten voor civiele en bouwkundige toepassingen; Biobased brug”. Het is geschreven voor bedrijfsleven en studenten van het MBO, het HBO en de universiteiten. Het project leverde een haalbaarheidsonderzoek van een volledig biocomposieten voetgangersbrug. Materialenonderzoek bij Inholland Composites en stijfheid en sterkte berekeningen toonden aan dat een volledig biocomposieten voetgangersbrug haalbaar was. De Dommelbrug is met succes door ruim 100 studenten gebouwd.

RE-store OFMSW system LCA-LCC tool v1

A tool to calculate the environmental and economic impact of different ways to collect and process organic waste. The tool contains calculations for waste generation, transport, waste processing and application/ substitution.

Household organic waste recovery as key element for a circular economy

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.