Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Lifecycle assessment"”.
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Spatiotemporal lifecycle assessment of the light-duty vehicle fleet of United States
… at treating these complex, context-dependent assessment challenges and address two questions: 1) What is the cost optimal technology portfolio required to achieve the environmental targets for the light-duty vehicle fleets? 2) How do the emerging ride-hailing services influence the carbon …
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Leaf protein concentrate from paunch grass and green waste: A technoeconomic analysis and lifecycle assessment
The global supply of food and feed protein needs to double during the first half of the 21st century. At present, food and feed protein is produced by livestock and arable crop farming. Further expansion of this protein production model is unsustainable in many countries due to overallocated water …
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A prospective comparative lifecycle assessment for green and grey hydrogen production and utilisation in the South African context
… review for hydrogen production and utilisation lifecycle assessment studies was conducted, and two prospective comparative lifecycle assessments are presented for green and grey hydrogen production and utilisation in the South African context. The first LCA aims to quantify the environmental …
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Configuration and Operating Condition Design Analysis of SOFC Systems for Building Applications
… of SOFC cogeneration systems, the environmental assessment of the system such as the air pollutant emission performance, the lifecycle assessment (LCA) of SOFC systems from manufacturing stage through the abolition stage and the faster execution time for the further elaboration of the …
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Applying Pavement Life Cycle Assessment Results to Enhance Sustainable Pavement Management Decision Making
… the use phase of a pavement into pavement lifecycle assessments. A detailed project level lifecycle assessment was conducted, and it was found that the vehicles on the pavement during the use phase contribute the most to environmental pollutants by a significant margin over other phases of …
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Localizing used cooking oil processing for biodiesel production in Iceland
… for biodiesel within Iceland, comparing lifecycle emissions and economic viability between the current export model and a proposed domestic system powered by renewable electricity. The study employs lifecycle assessment (LCA) methodology in accordance with ISO 14040/44 and RED III …
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Equivalent CO2 Emissions and Construction Costs of Buildings Designed Using Recycled Aggregate Concrete
… further research were determined including more Lifecycle Assessment impact categories, RCA concrete structure assessment throughout service life, and analysis of additional building types.
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Quantifying Emissions and Costs of Geologic Hydrogen: An Integrated Lifecycle Emissions and Techno-economic Approach
… energy solutions, this thesis explores the lifecycle emissions and economic feasibility of geologic hydrogen production. This research extends Brandt's 2023 study of 'prospective' lifecycle assessment (LCA), enhancing the underlying open-source LCA model used in this work and adding a …
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Optimal and intelligent decision making in sustainable development of electronic products
… declining natural and social systems. Multi-lifecycle engineering and sustainable development address these issues by integrating strategies for economic successes, environmental quality, and social equity. Based on multi-lifecycle engineering and sustainable development concepts, this …
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Biomass to ethanol : potential production and environmental impacts
… corn stover, and switchgrass. A life-cycle assessment approach with an integrated Monte Carlo uncertainty analysis is applied to each of these three bioethanol pathways. Incorporating a Monte Carlo uncertainty analysis within a life-cycle model enables one to account for system variability …
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Catalytic Upgrading of Lignin From Biomass
… association study of poplar. Technoeconomic and lifecycle assessment of the an RCF-based biorefinery identified, among other findings, that complete utilization of RCF oil is essential to economic viability. To this end, we developed a process for near-complete utilization of RCF lignin oil …
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Multi-functional applications of graphene related materials in cementitious composites
… perceptions of this novel material and a Lifecycle Assessment (LCA) study was also undertaken to establish the sustainability performance of a novel GNP-cement composite. The results demonstrated the potential of GRMs to improve the permeability performance of cementitious composites and …
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Platinum Slag as Fine Aggregate in Concrete for Coastal Applications
… environmental impacts were calculated through lifecycle and cost analyses. Platinum slag significantly improved workability compared to the control mix. At 28 days, all platinum slag mixtures achieved compressive strengths greater than 56 MPa (control: 65.6 MPa), with 10% platinum slag …
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Green profit design for lifecycle
… recovery perspective and provide a quantitative assessment of how good or how bad a product design is in terms of both recovery profit and environmental impact. The methods can be utilized for either design improvement or design selection. An original contribution of this dissertation is that it …
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Effects of disparate information levels on bridge management and safety
Maintenance planning and life-cycle assessment methods for bridge networks have received large research interest for many years; with modern emphasis often based on probabilistic approaches, due to their ability to handle uncertainty. This allows for risk-based approaches to quantify structural …
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Assessing the role of Blue Hydrogen in the UK's Net Zero transition: integrated lifecycle, value chain and policy perspectives.
… depend on multiple interacting factors including lifecycle environmental performance, value-chain efficiency, and the role of supporting policy frameworks. This creates a need for integrated and evidence-based assessment to inform policy and investment decisions. The aim of this PhD research is to …
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A technical, economic, and environmental assessment of Power-to-X applications for heavy-duty transport
… are technically feasible, and offer lower total lifecycle costs than the diesel incumbent despite higher vehicle capital costs. However, the low-energy density of battery technology means that they are limited in range to 450 km. Hydrogen fuel cell vehicles offer zero tailpipe emissions and a …
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Development of a hybrid heat source radiant system using an embedded concentric tube heat exchanger
… and the concentric tube heat exchanger, and a lifecycle assessment (LCA) of the HHSR system from the manufacturing stage to the demolition stage.
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Global development, acoustic and emissive consequences of hydropower
… approach may provide the basis for the ‘net’ assessment of future hydropower reservoirs. Chapter 3 reveals that distinct river soundscapes undergo changes which are highly correlated to hydropower operations, and thus rapid sub-daily changes occur at timescales not often found in natural …