What are the circular possibilities for materials and productsavailable in the Griffiersveld pilot and how can this informationbe presented? Interviews with stakeholders have led to a list ofrequirements for the material passports and what informationthey should include. Existing and experimental materialpassports have been collected and analysed to see whetherthey meet the requirements. The construction materials on siteare identified and circular possibilities of these materials arelisted. Finally an advice is given for the municipality ofApeldoorn for a circular renovation approach.
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CC-BY 4.0 In this report the research focusses on designing a method to circularly redesign a road in neigbourhood participation. Municipalities are becoming more aware of their environmental footprint. The construction andrenovation of public spaces come with the transport and processing of large volumes of concrete, clay bricks and asphalt. We are in the transition towards a circular economy. In the CityLoops project we propose the following composite definition for the circular economy, drawing on the work of different academics in the field. What are the circular possibilities for materials and products available in the Griffiersveld pilot and how can this information be presented? Interviews with stakeholders have led to a list of requirements for the material passports and what information they should include. Existing and experimental material passports have been collected and analysed to see whether they meet the requirements. The construction materials on site are identified and circular possibilities of these materials are listed. Finally an advice is given for the municipality of Apeldoorn for a circular renovation approach.
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This Whitepaper presents the essence of research into existing and emerging circular business models (CBMs). This results in the identification of seven basic types of CBM, divided into three groups that together form a classification. This Whitepaper consists of three parts. ? The first part discusses the background and explains the circular economy (CE), the connection with sustainability, business models and an overview of circular business models. ? In the second part, an overview is given of the developed classification of CBM, and each basic type is described based on its characteristics. This has resulted in seven knowledge maps. Finally, the last two, more future-oriented models are further explained and illustrated. ? The third part looks back briefly at the reliability of the classification made and then at the aspects of change management in working on and with a CBM.
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Horticulture crops and plants use only a limited part of the solar spectrum for their growth, the photosynthetically active radiation (PAR); even within PAR, different spectral regions have different functionality for plant growth, and so different light spectra are used to influence different properties of the plant, such as leaves, fruiting, longer stems and other plant properties. Artificial lighting, typically with LEDs, has been used to provide these specified spectra per plant, defined by their light recipe. This light is called steering light. While the natural sunlight provides a much more sustainable and abundant form of energy, however, the solar spectrum is not tuned towards specific plant needs. In this project, we capitalize on recent breakthroughs in nanoscience to optimally shape the solar spectrum, and produce a spectrally selective steering light, i.e. convert the energy of the entire solar spectrum into a spectrum most useful for agriculture and plant growth to utilize the sustainable solar energy to its fullest, and save on artificial lighting and electricity. We will take advantage of the developed light recipes and create a sustainable alternative to LED steering light, using nanomaterials to optimally shape the natural sunlight spectrum, while maintaining the increased yields. As a proof of concept, we are targeting the compactness of ornamental plants and seek to steer the plants’ growth to reduce leaf extension and thus be more valuable. To realize this project the Peter Schall group at the UvA leads this effort together with the university spinout, SolarFoil, whose expertise lies in the development of spectral conversion layers for horticulture. Renolit - a plastic manufacturer and Chemtrix, expert in flow synthesis, provide expertise and technical support to scale the foil, while Ludvig-Svensson, a pioneer in greenhouse climate screens, provides the desired light specifications and tests the foil in a controlled setting.
