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 49 for “"recycling process"”.
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The Design and Optimization of a Lithium-ion Battery Direct Recycling Process
… materials for LIBs in consumer electronics. The recycling of LIBs is important because cobalt is an expensive element that is dependent on foreign sources for production. Lithium-ion batteries need to be recycled and disposed properly when they reach the end of life (EOL) to avoid negative …
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A grid-level alkali liquid metal battery recycling process : design, implementation, and characterization
… Institute of Technology (MIT) in 2006. A recycling process to facilitate the end-of-life cycle for alkali or alkaline earth liquid metal batteries was designed, implemented, and characterized through a collaboration between MIT and a battery company. The process developed utilizes …
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Development, implementation and analysis of the first recycling process for alkaline liquid metal batteries
… Ambri cooperated with MIT to develop a new recycling process for their unique battery chemistry to implement a sustainable end of life management for their product. This thesis describes the process development, implementation and analysis of a hydrometallurgical recycling process for a …
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Fibre Structure Preservation during Carbon Fibre Reinforced Polymer Recycling – Characterisation and Parameter Prediction Model of the Recycling Process
… primarily due to the energy-intensive production process, making it a high-valued material. Yet, if CFRP becomes a waste at any time during the material’s life cycle, its value is instantaneously diminished. Thus it makes sense to recycle the valuable material, except that carbon fibre recovery is …
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Green Manufacturing and Direct Recycling of Lithium-Ion Batteries
… to develop an effective LIB production and recycling process. This dissertation demonstrates a green and sustainable paradigm for LIBs where the batteries are manufactured and direct recycled to form a closed loop. The water-based cathode electrode delivers comparable cycle life and rate …
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Direct Lithium-ion Battery Recycling to Yield Battery Grade Cathode Materials
… hazardous waste. Therefore, cost-effectively recycling LIBs becomes urgent needs. Lithium nickel cobalt manganese oxides (NCM) are one of the most essential cathode materials for EV applications due to their long cycle life, high capacity, and low cost. In 2008, 18.9% of Lithium-ion batteries …
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Non-woven, recycled carbon fibre composites : development of test methods and assessment of process parameters
… chopped, fluffy, and entangled requiring further processing. However, their transformation into non-woven textile fabrics and then to cured laminates, has recently become an efficient, cost-effective technique that makes the whole carbon fibre recycling process viable. The development of new …
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Mechanically mediated trithiocarbonate addition to commodity polymers for a more circular economy
Mechanical recycling, while thought of as environmentally conscious, is not nearly as effective as it is lauded to be. Great levels of mechanical force cause chain-scission and lower product value while simultaneously only working once, maybe twice before the material is useless. Studies to harness …
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Caracterização do resíduo pós-industrial de PVDF visando potencial utilização via reciclagem primária
… stability in high pressure/temperature. As a recycling process for this fluoropolymer is still unknown, this work suggests reinserting the PVDF post-industrial waste by primary recycling aiming the remediation of the issue caused by its disposal in the environment. Results showed that both …
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Re-usability of plastics
… out by researching and learning about how the recycling process operates. Further research was then conducted on the seven different types of resins that exist in the recycling world today. After collecting the data, an experiment was devised in order to learn more about the capabilities of …
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The effects of quenching and aging on the mechanical and physical properties of recycled aa6061 aluminum chips
… the usage of aluminum is widely used. The recycling process is needed to respond to the government's call for a green earth campaign cause of the lack of mineral resources on this earth. The direct recycling method is one of the recycling method to reduces cost and energy consumptions. The …
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Precipitation Recycling as a Mechanism for Ecoclimatological Stability Through Local and Non-Local Interactions
Different physical mechanisms drive precipitation recycling in each region. In the Midwestern United States, evapotranspiration is not significantly affected by soil moisture anomalies, and there is a high recycling ratio during periods of reduced total precipitation. The reason is that, during …
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The material and energy flow through the abrasive waterjet machining and recycling processes
… the abrasive waterjet machine and the WARD recycling machine. The goal was to track all of the material, water, abrasive, energy, air, and tooling through the different components of the machining and recycling processes. The material removal was found to be a function of length and part …
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Critical review of disinfection by-products (DBPs) in fresh produce and process water
… of fresh and fresh-cut produce in food processing industry. However, the disinfectant can react with the organic matter in produce and water, leading to the formation of disinfection byproducts (DBPs), which pose potential carcinogenic risks to human health. Despite the common use of …
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Analysis of the cost of recycling compliance for the automobile industry
… on End-of-life vehicles try to push the recycling process further: it fixed the percentage of recyclability (85%) and recoverability (95%) automotive companies have to reach for their new vehicles in 2015. Complying with these directives will imply a cost, which will be borne by one or …
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Liquid metal batteries : ambipolar electrolysis and alkaline earth electroalloying cells
… phenomenon could be utilized in a new recycling process for bimetallic semiconductors. A second type of liquid metal battery was investigated that utilized the potential difference generated by metal alloys of different compositions. MgjlSb cells of this nature were operated at 700 °C, …
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The Material Separation Process for Recycling End-of-life Li-ion Batteries
… any hazardous threats to the environment. The recycling process of a Lithium-ion Battery Cell/Module includes storage, transportation, deactivation, disassembly, and material recovery. This study focused on the disassembly step and proposed a systematic method to recover cathode active coating, …
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Applications and Methods for Increased Liberation and Separation in the Deinking of Recycled Paper Fiber
Deinking flotation is an important part of the recycling process for used fibers, in which liberation is a key step in preparing the ink particles to be separated from fibers. The pigments of oil-based inks are hydrophobic and, therefore, can be readily separated from hydrophilic fibers by …
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Carbon Dioxide Gas Separation from Syngas to Increase Conversion of Reverse Water Gas Shift Reaction via Polymeric and Mixed Matrix Membranes
… the overall conversion of CO2 to CO. This process involves a separation and recycling process to reuse the unreacted CO2 from the RWGS reactor. The carbon monoxide produced from this reaction, alongside hydrogen (composing syngas), can be used in the Fischer-Tropsch process to create …
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Linking genotype to phenotype: a modelling framework for investigating individual and interacting mycelia
… resulting from the interplay among simple local processes governing uptake and remobilization of internal resources, and macroscopic processes associated with their transport. The model demonstrates that the recycling process is crucial in soil-like environments where resources are limited and …
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