Adsorbed natural gas (ANG) storage using metal-organic frameworks (MOFs) is a promising alter- native for efficient natural gas storage at moderate pressures. However, the presence of higher alkanes in natural gas mixtures can significantly affect storage performance by reducing methane adsorption capacity. Basolite C300, a well-studied MOF, offers high volumetric methane storage, but its long-term efficiency in real-world conditions remains a challenge due to potential pore blockage from hydrocarbon accumulation. This study investigates the long-term impact of Cn≥2 alkanes on the adsorption capacity of Basolite C300. Volumetric storage capacities of methane, individual alkanes, and a natural gas mixture were measured at 20 °C. The material underwent 100 adsorption-desorption cycles to assess the progressive impact of Cn≥2 alkanes on methane storage. The experimental results revealed a 63% reduction in methane storage capacity after 100 cycles, highlighting the detrimental effect of alkane accumulation. Higher alkanes were preferentially adsorbed within Basolite C300 micropores, leading to progressive pore blockage and decreased methane uptake. These findings underscore the critical role of gas composition in ANG systems and emphasize the need for mitigation strategies, such as selective pre-adsorption or regeneration techniques, to maintain long-term storage efficiency in MOF-based gas storage applications.
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Deze praktijkaanbevelingen, te hanteren bij het maken van lijmverbindingen voor GVK-buizen, zijn bedoeld als richtlijn voor het toezichthoudend personeel. Ze bevatten geen gedetailleerde voorschriften voor de uit te voeren werkzaamheden. Uitgangspunt bij deze aanbevelingen is dat het uitvoerend personeel de beschikking heeft over de werkvoorschriften van de leverancier.
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De kop van dit artikel is een van de conclusies van Frank Crasborn en Paul Hennissen, die beiden als lerarenopleider en onderwijsadviseur zijn verbonden aan de Fontys Lerarenopleidingen te Sittard. Zij promoveerden op een proefschrift over begeleidingsgedrag van begeleiders van aanstaande leraren.
MULTIFILE
The demand for sustainable colourants is gaining significant recognition across many industries, the UN, governments, and also among consumers. As awareness grows, the urgent need to develop eco-friendly alternatives to traditional pigments and dyes, often criticized for their energy-intensive processes and environmental impact, becomes apparent. The RAAK-PRO project proposal "ChromoFlavo" addresses this need by exploring the biomanufacturing of Structural Colour (SC) in a novel way using Flavobacteria. SC features microscopically structured particles that interact with light in a similar way to peacock feathers, offering vivid, non-toxic colours while reducing energy use and reliance on renewable resources. Although Bacterial-Derived Structural Colours (BDSC) show great promise, they are still in early development, particularly regarding scalability and the preservation and formulation of colourants. To tackle these challenges, the RAAK-PRO proposal aims to advance this technology to meet market needs. The project’s initial focus is on architectural coatings and design, areas where aesthetics and sustainability are paramount, and where designers are often eager to adopt new technologies. By demonstrating BDSC's potential in these sectors, the project seeks to underscore its broader applicability in other sectors. The colourant industry, with its diverse applications, presents challenges to adopting innovative technologies. To overcome these, the project will develop a business roadmap that integrates designer input to strategically position and promote BDSC. This important activity is designed to promote future product development. This project brings together a consortium of academic institutions, biotech SMEs, industrial designers, and industry partners to enhance the durability and consistency of structural colours produced by bacteria. The goals include establishing cost-effective production methods and developing paints and coatings incorporating SC derivatives. Through innovation in sustainable colourants, the "ChromoFlavo" project aspires to drive a transformative shift in the colour industry, ultimately scaling BDSC technology to meet the growing demand for environmentally friendly solutions.
In dit project wordt de haalbaarheid bestudeerd voor het maken van nanoporeuze membranen met behulp van gangbare processen in de halfgeleiderindustrie. Nanoporeuze membranen bieden onder meer de mogelijkheid om op energie-efficiënte en milieuvriendelijke manier water te ontzouten of het scheiden van vluchtige componenten als alternatief voor destillatie. Recent zijn veel nieuwe nanoporeuze materialen gerapporteerd. Succesvolle toepassingen op het gebied van katalyse, sensoren en scheidingen, waaronder ook eerste voorbeelden van kleinschalige nanofiltratie, geven de potentie van dergelijke materialen aan voor een toepassing op het gebied van nanofiltratie op grotere schaal. Echter, het ontbreekt momenteel aan goede, eenvoudige methoden om deze opschaling voor ultradunne (sub-micron), nanoporeuze membranen te realiseren. In dit project zal wordt een methode bestudeerd en geïmplementeerd waarmee dit wel mogelijk is.
