High level circular use of post-consumer insulating glass units will contribute to lower the environmental and social impact of insulation glass industry. The application of various circular strategies for insulating glass units (IGU’s) is rising. The product age will give an indication of the remaining life-time of an IGU, but a method which includes screening a technical quality is needed to check if an IGU is indeed suitable for re-use on a high level of circularity. In this study the argon concentration is suggested as discriminative quality. Energy efficient double glazing applied in windows of buildings situated in The Netherlands were studied. Product codes were noted and unraveled. Measurements were performed using the Sparklike Laser Portable, a non-invasive argon measuring device, which generates argon concentration, glass thickness and cavity width values. In addition, measurements were performed with a Glass Check thickness meter. The resulting data were analyzed. Measuring errors were explored and used to setup a testing procedure. Threshold values of the product age and argon concentration were selected for different circular strategies. In conclusion, a screening method using the product age and argon concentration to determine the circular use potential of insulating glass units is proposed.
MULTIFILE
Presentation about the KIEM-RETOUR Circular Carpets project.
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Construction and demolition waste (CDW) is the most important waste stream in the EU in terms of mass, with around 340 million tonnes between 2010 and 2018 (EEA, 2020). Most member states achieved a recovery target of 70% for this fraction, however, it is mainly based on backfilling or downcycling. Materials coming from demolition and renovation work are not often available for reuse or recycling activities, with some noticeable exceptions in the case of some pioneering Urban Resource Centres (URCs). URCs are physical centres that promote the circular economy at local level (Partnership on Circular Economy, 2019) prioritizing reuse, preparation for reuse, upcycling and remanufacturing activities over material recycling. This is an emerging concept throughout Europe, that has received much policy attention given its potential to help achieve Circular Economy goals set by the European Commission. So far there have been no systematic analyses of URCs, their operation and their impact. The goal of our paper is twofold: 1) to understand how frontrunning URCs currently operate and 2) to derive conclusions/policy recommendations/design principles for URCs. This article presents a comparison of seven URCs that to some extent allow the reuse of CDW in their locations. The data has been gathered in guided study visits to the different locations, complemented by additional information provided by the managers of the URCs through their yearly reports and follow up conversations. The research took place as part of the project Centers for Urban Resources, Reuse and Remanufacture (Cure+), which aims to establish URC pilots in the four project cities (Riga, Tartu, Kavala and Barcelona).
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Due to the existing pressure for a more rational use of the water, many public managers and industries have to re-think/adapt their processes towards a more circular approach. Such pressure is even more critical in the Rio Doce region, Minas Gerais, due to the large environmental accident occurred in 2015. Cenibra (pulp mill) is an example of such industries due to the fact that it is situated in the river basin and that it has a water demanding process. The current proposal is meant as an academic and engineering study to propose possible solutions to decrease the total water consumption of the mill and, thus, decrease the total stress on the Rio Doce basin. The work will be divided in three working packages, namely: (i) evaluation (modelling) of the mill process and water balance (ii) application and operation of a pilot scale wastewater treatment plant (iii) analysis of the impacts caused by the improvement of the process. The second work package will also be conducted (in parallel) with a lab scale setup in The Netherlands to allow fast adjustments and broaden evaluation of the setup/process performance. The actions will focus on reducing the mill total water consumption in 20%.
Met het rijksbrede programma ‘Nederland Circulair in 2050’ wil de Rijksoverheid een omslag maken naar een circulaire economie, met als uitgangspunt 50% minder verbruik van primaire grondstoffen (mineraal, fossiel en metalen) in 2030. In hun voorbeeldfunctie tegenover bedrijven en consumenten hebben overheidsorganisaties als doel gesteld om in 2020 slechts 35% restafval te genereren binnen hun bedrijfsvoering. Een afdeling Facility Management, gericht op ondersteuning van het primaire proces, kan daaraan een belangrijke bijdrage leveren. Maar hoe doe je dat? Facilitaire professionals van overheidsorganisaties ervaren knelpunten die hen belemmeren om de doelstellingen te behalen. Zij vinden het bijvoorbeeld lastig om de circulaire gedachte en circulair gedrag in alle schakels van het bedrijfsproces te stimuleren. En beschikken niet altijd over de juiste kennis om gericht actie te ondernemen. In dit project wordt dan ook handelingsgericht onderzoek verricht rondom de vraag: “Met welk handelingsprotocol kunnen facilitaire professionals van de Rijksoverheid duurzaam gebruikersgedrag stimuleren, de afval- en grondstofstromen verduurzamen en daarmee bijdragen aan een circulaire bedrijfsvoering?” De projectpartners Dienst Justitiële Inrichtingen en FM Haaglanden willen samen met De Haagse Hogeschool een handelingsprotocol ontwikkelen zodat facilitaire professionals de circulaire bedrijfsvoering binnen overheidsorganisaties kunnen optimaliseren. Het project speelt daarmee in op de huidige handelingsverlegenheid bij facilitaire professionals die in zeer korte tijd de ambitie van 35% restafval in 2020 dienen te halen. De urgentie van het project is daarmee zeer groot. In twee jaar ontwikkelt De Haagse Hogeschool dit handelingsprotocol samen met de projectpartners. Het projectplan bestaat uit activiteiten die zijn gericht op 1) het inventariseren en stimuleren van duurzaam gedrag bij eindgebruikers, 2) het inventariseren en stimuleren van duurzaam gedrag bij facilitaire professionals, 3) het ontwikkelen en toepassen van een praktisch handelingsprotocol voor facilitaire professionals van de Rijksoverheid en 4) het dissemineren in praktijk, onderwijs en onderzoek.
The transition to a circular, resource efficient construction sector is crucial to achieve climate neutrality in 2050. Construction stillaccounts for 50% of all extracted materials, is responsible for 3% of EU’s waste and for at least 12% of Green House Gas emissions.However, this transition is lagging, the impact of circular building materials is still limited.To accelerate the positive impact of circulair building materials Circular Trust Building has analyzed partners’ circular initiatives andidentified 4 related critical success factors for circularity, re-use of waste, and lower emissions:1. Level of integration2. Organized trust3. Shared learning4. Common goalsScaling these success factors requires new solutions, skills empowering stakeholders, and joint strategies and action plans. Circular TrustBuilding will do so using the innovative sociotechnical transition theory:1.Back casting: integrating stakeholders on common goals and analyzing together what’s needed, what’s available and who cancontribute what. The result is a joint strategy and xx regional action plans.2.Agile development of missing solutions such a Circular Building Trust Framework, Regional Circular Deals, connecting digitalplatforms matching supply and demand3.Increasing institutional capacity in (de-)construction, renovation, development and regulation: trained professionals move thetransition forward.Circular Trust Building will demonstrate these in xx pilots with local stakeholders. Each pilot will at least realize a 25% reduction of thematerial footprint of construction and renovation
