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 16 of 16 for “"PET bottles"”.
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High density polyethylene (HDPE) containers as an alternative to polyethylene terephthalate (PET) bottles for solar disinfection of drinking water in northern region, Ghana
… as an alternative to polyethylene terephthalate (PET) bottles for the solar disinfection of drinking water in the Northern Region of Ghana, in a process know as SOLAIR. This study is in line with the intention of Pure Home Water, a registered non-profit organization in Ghana, to offer a variety of …
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Antimony and acetaldehyde migration from Nigerian and British PET bottles into water and soft drinks under typical use conditions. Concentration of migrants and some trace elements in polyethylene terephthalate and in bottled contents.
Polyethylene terephthalate (PET) is an excellent material for bottling water, beverages, edible oils and other liquids because it is light, tough and transparent. PET bottles are also extensively reused for storage of drinking water, beverages and other liquids and for solar disinfection of …
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Engineering properties of ring shaped polytheylene terephthalate (RPET) fiber self-compacting concrete
Polyethylene terephthalate (PET) bottles are plastic containers that are typically discarded, and thus, cause environmental pollution. To solve this problem, PET bottles are recycled in concrete. Previous studies have mostly used PET with straight or irregularly shaped fibers. It has been shown …
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Plasma-Material Interactions: A Langmuir Probe Analysis of a Cylindrical SiO(2) Deposition System and a Computational Study Using VFTRIM3D
… application of $\rm SiO\sb2$ films onto flexible PET bottles using the fashion explained herein results in a decrease in the gas permeation characteristics of the $\rm SiO\sb2$-PET membrane as desired, but is found to be independent of the thickness of the $\rm SiO\sb2$ present. This limit is …
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Quantifying barriers to recycling plastic packaging in the United States
… two large-volume plastic packaging contexts: PET (polyethylene terephthalate) bottles and flexible packaging made of PE (polyethylene) and PP (polypropylene). Demand for recycled PET has risen sharply due to policy and consumer pressures that target circularity. However, in the US, PET bottle …
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The effect of structure on the mass transport of acetaldehyde in virgin and recycled poly(ethylene terephthalate)
PET is a thermoplastic polyester prepared from terephthalic acid and ethylene glycol. It is used for the production of bottles, sheets, films, strapping and injection moulded products. PET bottles are extensively used for various food-packaging applications, particularly in developed countries, …
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Harvesting the plastic we have sowed : costs and challenges in, and a novel application of blockchain for implementing extended producer responsibility in Chile
… EPR in Chile. Using packaged beverage PET bottles as a case study, it models the per-bottle cost of implementing EPR. The thesis explores the effect of EPR on the recycled PET market and its main substitute and competition virgin PET. It also considers how might EPR's implementation …
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Desenvolvimento de antisséptico bucal em pastilha para prevenção da cárie dental
… stored in glass or polyethylene terephthalate(PET)bottles. Thus, it can be considered that CPC lozenges with adequate pharmacotechnical characteristics and stability were obtained.
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Influence of Polyolefin Contamination on the Thermal Characteristics of Bottle Grade Recycled Polyethylene Terephthalate
… sorting and separation process of bottle grade PET, cross contamination with polyolefin is inevitable. Very small number of polyolefin bottles, caps and closures pass through the separation process and get recycled with PET bottles and affect the final characteristics of the recyclate. The …
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Development of an efficient off-grid pumping system and evaporation reduction strategies to increase access to irrigation for smallholder farmers in India
… and included covering a water surface with waste PET bottles and floats comprised of PET waste bottles and old saris. While waste bottles proved promising in a preliminary test, data in a larger experiment has thus far proved inconclusive and further testing is needed.
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Development of masterbatches for poly (ethylene terephthalate) with improved resistance to CO2 permeation
… to improve the CO2 retention properties of PET bottles. Masterbatches of different types of polyamide/clay, PET/clay, PET/nano-silica flakes and PET/divalent layered metal phosphonates (DLMP) were produced by melt compounding and evaluated. In the case of polyamide based nanocomposites PA6 …
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Performance of composite sand cement brick containing recycled concrete aggregate and waste polyethylene terepthalate
… to replace naturals resource or other competitive materials. This study aims to establish the sustainable properties for composite bricks using Recycle Concrete Aggregate (RCA) and Polyethylene Terephthalate (PET) waste bottles as sand aggregate replacement. RCA was obtained from crushed …
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Advanced batch process modelling, control and optimization for injection stretch blow moulding
… (ISBM) process is widely used to manufacture PET bottles for the beverage and consumer goods industry. However, at present the ISBM process, including both the stretch blow moulding and reheating processes, are totally open-loop. The processes are complex and users often have to rely heavily …
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Sustainability within the polyester value chain
Polyethylene terephthalate (PET) is used to make textile fibres, bottles and packaging films. The global production in 2013 was 65 Mt, growing at 5-7% per year over the last decade. PET is manufactured by the continuous polymerisation of ethylene glycol and terephthalic acid, both of which are …
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Evaluación de las propiedades térmicas de botellas de PET recicladas colocadas en muro de drywall para proceso constructivo en seco en la ciudad de Lima Metropolitana
… Para ello, se ha escogido a las botellas PET, como material reciclado y tabiquería seca como proceso constructivo. El estudio de investigación consta de la ejecución de un muro de drywall relleno con botellas PET recicladas y, mediante la toma de temperaturas, compararlo con un muro de …