Decarbonizing the building stock is critical for realizing the climate-neutral target for the Netherlands. This thesis uses multi-source data, mainly including GIS data of building footprints and... Show moreDecarbonizing the building stock is critical for realizing the climate-neutral target for the Netherlands. This thesis uses multi-source data, mainly including GIS data of building footprints and the archetypes representative of Dutch residential buildings, to develop a series of bottom-up building stock models to track future material stock and flows, energy demand, electricity generation, and GHG emissions. Results demonstrate the great potential for decarbonizing the Dutch residential building sector, while decarbonization strategies should be effectively and extensively implemented. Saving space heating energy consumption is the most direct way to reduce annual GHG emissions. Considering that most existing residential buildings will still be in use in 2050, renovating them with high energy performance standards is required. Despite the great potential of renovation, it alone is not enough to realize the climate-neutral target in the residential building stock because the upstream fossil fuel-based energy systems still emit large amounts of GHG. Replacing fossil fuels with renewable energy sources is a critical path, mainly involving onsite natural gas combustion for space heating and offsite natural gas and coal combustion for electricity and heat (in heat networks) generation. Urban mining cannot contribute to as much GHG emission reduction as energy transition strategies, though, should still be implemented as it can reduce the primary material consumption and CDW landfill. In addition to the technical aspects considered in this thesis, it is also necessary to develop feasible policies in terms of socioeconomic aspects to guarantee the effective and quick deployment of these technical strategies. Show less
In-use stocks of products can be considered as intermediaries between human needs and the physical world. During use, they fulfil important functions, but they can also be seen as a source of... Show moreIn-use stocks of products can be considered as intermediaries between human needs and the physical world. During use, they fulfil important functions, but they can also be seen as a source of materials for the future: the production of secondary materials. This idea of an urban mine is applied to copper in China in this dissertation. Taking into account that most modern technologies rely on copper, consumption of diverse copper-containing products in China is increasing rapidly. The in-use copper stocks have become a large reservoir for urban mining. It is of crucial importance to secure future supply by closing copper cycles, thereby also reducing environmental pressure. Therefore, the aim of this research is to explore how the stocks and flows related to the Chinese copper cycle can be transformed into a sustainable and circular economy. The material flow analysis and life cycle assessment approaches are used to quantify the in-use stocks, demand and waste generation for copper under the Chinese policies related to general economic development, the energy transition and ambitions with regard to circular economy, and assess associated environmental impacts as well as identify potential options to realize the dematerialization and environmental sustainability of the copper cycle in China. Show less
Technologies and sustainable development are interrelated from a thermodynamic perspective, with industrial ecology (IE) as a major point of access for studying the relationship in the Anthropocene... Show moreTechnologies and sustainable development are interrelated from a thermodynamic perspective, with industrial ecology (IE) as a major point of access for studying the relationship in the Anthropocene. To offer insights into the potential offered by thermodynamics in the environmental sustainability analysis of technologies, this thesis develops a hierarchical framework which defines techno-systems at four levels, viz. the ecosphere, the anthroposphere, and individual technologies, the latter being further subdivided into a foreground system and a supply chain. The role and applications of thermodynamic analysis in IE and broader human-environment systems is reviewed. The production of US bioethanol, global biofuels, and Chinese titania is studied by applying a series of thermodynamic sustainability indicators, combining thermodynamic analysis with material flow analysis (MFA), and combing thermodynamic analysis with life cycle assessment (LCA), respectively, in the framework. The outcomes of the review and case studies show that taking account of thermodynamics is a necessity when analyzing the environmental sustainability of technologies, and integrating energy analysis, exergy analysis, and emergy analysis with LCA and MFA is both feasible and useful. The thesis then discusses the limitations and challenges of the developed framework and ends with three recommendations for the further development of thermodynamic analysis for sustainability. Show less
