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 37 for “"Micropollutants"”.
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Microplastics as a vector for micropollutants in aquatic environments.
… evident that microplastics can interact with micropollutants when co-existing in the environment. The aim of this thesis was to elucidate the potential role of microplastics as a vector for cyanotoxins (microcystins) and anthropogenic contaminants (pharmaceuticals) in freshwater. To this end, …
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ORGANIC MICROPOLLUTANTS ANALYSIS AND THEIR METROLOGICAL TRACEABILITY TO SI UNITS
… work concerned the determination of organic micropollutants in food matrices at trace level, with the aim of correctly evaluating the measurement uncertainty and establishing metrological traceability for the results of these measurements. The metrological traceability of organic …
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PARTICLE-WATER INTERACTIONS OF HYDROPHOBIC ORGANIC MICROPOLLUTANTS IN MARINE SYSTEMS
… of the reactivity of hydrophobic organic micropollutants (HOMs) is of paramount importance to water quality managers because of their toxicity, persistence, and liability to bioaccumulate. In this study, the role played by the main estuarine variables (organic matter, suspended particulate …
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Photocatalytic oxidation of pharmaceutical micropollutants in a flow-through reactor
The presence of pharmaceutical micropollutants in drinking and natural waters has recently become increasingly publicized. The increased presence of pharmaceutical micropollutants in drinking water requires additional water treatment strategies. Diatrizoate, carbamazepine, sulfamethoxazole, and …
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Advancing biocatalytic technologies for degradation of micropollutants in drinking water
… offer targeted and rapid destruction of micropollutants such as perchlorate. This targeted destruction of perchlorate even in the presence of orders of magnitude higher concentrations of co-competing compounds offers a distinct advantage over traditional and emerging perchlorate treatment …
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Ammonia-monooxygenase-mediated cometabolic biotransformation and abiotic transformation of micropollutants
Biotransformation of a number of micropollutants (MPs) has been found to positively correlate with nitrification activities in inhibition studies of nitrifying activated sludge communities. To further elucidate roles played by ammonia-oxidizing bacteria (AOB), and nitrite-oxidizing bacteria (NOB) …
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Micropollutants biotransformation by two nitrifying communities enriched from biofilm of a nitrification trickling tower
Concerns about micropollutants in wastewater treatment effluent is increasing during the past decade due to their potential adverse environmental effects. It has been hypothesized that ammonia-oxidizing bacteria (AOB) were responsible for micropollutants biotransformation, which contributes to the …
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A study of the distribution of selected anthropogenic micropollutants in the seawater of Dublin bay
Since the middle of the last century there has been a growing awareness of the existence of widespread environmental pollution and of the potentially harmful effects that polluting species can have on biological systems. Initially the concern focused on the ubiquity and on the harmful effects of …
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Deactivation and regeneration of immobilized titanium dioxide photocatalysts during treatment of pharmaceutical micropollutants in groundwater
As detection methods improve, a number of classes of emerging contaminants are being detected in natural waters, including many pharmaceuticals and personal care products (PPCPs). Many of these chemicals are recalcitrant to conventional treatment processes, so new treatment methods are being …
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Oxidative Treatment of Emerging Micropollutants and Viral Pathogens by Potassium Permanganate and Ferrate: Kinetics and Mechanisms
Providing clean drinking water is a primary challenge of this century. The ubiquitous occurrence of pharmaceutically active compounds (PhACs), including antibiotics, anticonvulsants, painkillers, estrogenic hormones, lipid regulators, beta-blockers, antihistamines, X-ray contrast media, etc., in …
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Analysis of Illicit Drugs, Their Metabolites and Other Micropollutants in Water by Liquid Chromatography Tandem Mass Spectrometry
… methods for the analysis of different, novel micropollutants in waste water and natural water. Micropollutants are compounds that can exert adverse environmental and human health effects at low concentrations. Most of these compounds include personal care products and pharmaceuticals, such as …
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Continuous-flow photocatalytic treatment of pharmaceutical micropollutants: activity, inhibition, and deactivation of TiO2 photocatalysts in natural water matrices
Made available in DSpace on 2012-09-18T21:18:59Z (GMT). No. of bitstreams: 2 Carbonaro_Sean.pdf: 2621237 bytes, checksum: 5fc720bdde6038dc49b55d7e2a910a3a (MD5) license.txt: 4064 bytes, checksum: 5773ab6b14d3b6df5974ca74f7c7db18 (MD5)
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Understanding the impact of polymer functionalized electrode fabrication and cycling conditions on stability and selective separation of micropollutants
The main focus of this thesis is on selectively separating target contaminants present in an aqueous environment via electrochemically-mediated capture at polymer interfaces in order to improve water security. Heavy metal pollutants such as arsenic have diverse physico-chemical properties which …
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Sustainable Hydrogels for Water Treatment
… in water treatment today is the elimination of micropollutants, including low-concentration emerging contaminants like PFAS and heavy metals like lead. Existing technologies like activated carbon adsorption fail to eliminate these contaminants due to their chemical diversity and low …
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A sponge-based moving bed bioreactor for micropollutant removal from municipal wastewater
… the past few decades, the frequent detection of micropollutants in the aquatic environment has raised particular health and environmental concerns. Wastewater treatment plants (WWTPs) serve as significant barriers to reduce the release of micropollutants. However, due to the diverse …
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Study mass transfer of Cd, Hg, As, DDT and chlordane through adsorption onto granular activated carbon
… of the mass transfer and adsorption processes of micropollutants. The objectives of this study are to analyze the difference, examine the adsoprtion diffusion of mass transfer and evaluate the variation of total, internal and external mass transfer. This study also used the transformed equation to …
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Treating filtered final effluent from the Cape Flats Wastewater treatment plant with ozone and biologically activated carbon filtration to remove pathogens and organic micropollutants
… source for human consumption given the organic micropollutants and pathogens it can contain. Hence, multi-barrier treatment trains and advanced processes are required. However, these are costly and therefore it is necessary to investigate how their cost can be optimized. Plumlee et al. (2014) …
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Elemental content to rice grain related to growing regions and soil microbiology
… countries including Sri Lanka. Arsenic and other micropollutants accumulation in rice grain is becoming a serious issue due to several reasons. Some of these micropollutants are highly carcinogenic even in trace amounts. Moreover, People who use rice as their staple food has a high per capita use …
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The use of a calibrated three phase (solid-aqueous-gas) plant-wide wastewater treatment model to simulate data on mineral precipitation
… chemicals, extensive use, and the release of micropollutants into the environment are inevitable occurrences in contemporary society. In reality, wastewater treatment plants are the primary means of spreading micropollutants, primarily because of their inadequate performance. However, efforts …
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The Comparative Study between the Adsorptive Capacity of Activated Carbon Obtained from the Enhanced Hydrothermal Polymerization Process with Conventional Activated Carbons in the Removal of Micropollutants of Concern
… the tertiary treatment of wastewater to remove micropollutants. One of the most popular adsorbents used towards adsorption is activated carbon. However, due to the high cost of the conventional commercial activated carbon (produced from coal, which is a finite resource), it is important to find …
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