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 11 of 11 for “"Plastic wastes"”.
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Analysis and assessment of integrated waste-to-energy systems based on plastic wastes for multigeneration
This thesis proposes three wastes to energy multigeneration systems that are based on plastic wastes. The three systems are coupled with renewable energy resources like solar energy, geothermal energy, and wind turbine energy. The three systems are designed to convert plastic waste into five useful …
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Biosynthesis and characterisation of polyhydroxyalkanoate biopolymers and their oligomers for circular economy
Polyhydroxyalkanoates (PHAs) are biodegradable bioplastics that can potentially replace non-biodegradable petroleum-based plastics. However, the high production cost of PHAs which is associated with the high cost of starting substrate extraction solvents limits its integration into large scale …
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The Compressive And Flexural Strength Of Concrete Containing Recycled Waste Plastic
<p>Annually, tons of plastic wastes end up in landfills and the oceans through indiscriminate dumping, constituting a major source of pollution to the environment and threat to human health and marine lives. It therefore necessitates an innovative strategy to help mitigate the environmental hazards …
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Kinetic modeling frameworks for the chemical recycling of polyolefins
Plastics have become essential to modern life, yet their durability has led to a global waste challenge (> 360 Mt per year). Among this gigantic among of plastic wastes, most of them have been landfilled, incinerated, or even mismanaged. Only a small portion of them have been recycled. However, …
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Advances in the Synthesis and Application of Dynamic Covalent Polymer Networks
To combat the rising concerns related to plastic wastes, fabricating sustainable and renewable plastics is an important strategy. Thermoplastics (linear polymers) and Thermosets (crosslinked polymer networks) are two main categories of plastic materials. Thermosets have excellent chemical …
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Fundamental Studies of Various Poly(L-lactide)/clay Nanocomposite Systems by in-situ Polymerization
Biodegradable plastics are a promising solution to the increasing global concern of persistent plastic wastes on the environment. In order for biodegradable polymers to successfully compete with commodity polymers, mechanical, thermal, and gas barrier properties must be improved. This can be …
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Molten Alkali Metal Borate/Carbonate Salts for High Temperature CO₂ Capture and Electrochemical Conversion
… process for conversion of oceanic biomass and plastic wastes into hydrogen. We perform preliminary investigations into the possibility of an all-in-one gasification/electrolysis reactor, determining that the presence of seaweed ash inhibits CNT synthesis, but LDPE can be gasified without …
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Assessing the Ability of Marine Plastic Waste to Adsorb Heavy Metals and Emerging Organic Contaminants from Water
Plastic waste has been identified as an increasing threat to the marine ecosystem. One of the most concerning aspects of plastics in the marine environment is their ability to bind contaminants and act as vector for their long-range transport. This may include established and emerging contaminants …
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Fabrication of zein nanostructure
The concerns on the increase of polluting plastic wastes as well as the U.S. dependence on imported petrochemical products have driven an attention towards alternative biodegradable polymers from renewable resources. Zein protein, a co-product from ethanol production from corn, is a good candidate. …
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Standardization of recycled plastic materials for additive manufacturing
… This thesis aims to enhance the quality of some plastic wastes to meet the standardized thermal and mechanical properties and make them suitable for 3D printing. In the modern manufacturing revolution, which follows the concept of "Industry 4.0", AM plays a key role as an enabling technology, …
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Green supply chain management in the pharmaceutical sector: an investigation in the UK context
… unprecedented levels of ocean pollution from plastic wastes, pesticides, drugs and other chemicals, scarcity of fresh drinking water, increased levels of tropical disease due to warmer weather, biodiversity loss leading to natural ecosystem disruptions, and many more. Whilst industrial …