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 27 for “"Contaminated waters"”.
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Removal of antibiotics from contaminated waters using natural zeolite
… to develop methods for antibiotics removal from contaminated water. In this thesis work, the sorption of four antibiotics, namely chlortetracycline (CTC), oxytetracycline (OTC), ofloxacin (OFL), and enrofloxacin (ENR), on natural zeolite was investigated. The impact of pH and natural organic …
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Investigation of constructed wetlands capability to remove mercury from contaminated waters
… (Free Water Surface) to remove mercury from contaminated water/wastewater and reduce the widespread dispersion of the toxic substance to streams, rivers, reservoirs, and oceans. Mercury removal pathways considered in the study are sorption to the solid phase and uptake by plants. Current …
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Biological treatment of waste solutions generated from the remediation of perchlorate-contaminated waters
… to remove perchlorate contamination from waters and eliminate it from the environment. Perchlorate can be removed from water by ion exchange. However, regeneration of these resins creates a waste stream, concentrating the perchlorate and other components in the regenerant solution. This …
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Application of a Novel Heterogeneous Fenton Catalyst in the Treatment of BTEX-Contaminated Waters
The performance of a novel nano-coated surface functionalised PAN-(Fe3+) system as a heterogeneous Fenton catalyst has been investigated in this work and the results show that the heterogeneous Fenton catalyst is a suitable technology for the effective oxidation of organic compounds. When the …
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Changes in the Potentiometric Surface of the Deep Aquifer in the Joplin Area, Missouri, 1900-Present
… principally by the downward seepage of contaminated waters from the abandoned lead and zinc mines in the overlaying Mississippian units. The lead and zinc mining which took place in the area and the associated changes in the populations of the two counties have caused fluctuations in the …
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Quantifying uncertainty in pathogen removal, membrane integrity monitoring and health consequences in the treatment of drinking water
… infection, by up to a factor of 10 in the most contaminated waters, whereas the increased risk in less contaminated waters is negligible. This is the first application of Probability Bounds Analysis in a QMRA to determine the health risk of undetected fiber breakage. These results may inform …
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Evaluation and implementation of adsorption technologies for the treatment of per and polyfluoroalkyl substances
… are frequently applied in the treatment of PFAS contaminated waters, there is still an insufficient understanding related to the factors that influence short and long chain PFAS removal performance and the cost effectiveness of these treatment strategies. Novel adsorption technologies have …
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Evaluation and implementation of adsorption technologies for the treatment of per and polyfluoroalkyl substances
… are frequently applied in the treatment of PFAS contaminated waters, there is still an insufficient understanding related to the factors that influence short and long chain PFAS removal performance and the cost effectiveness of these treatment strategies. Novel adsorption technologies have …
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Arsenic mobilization through bioreduction of iron oxide nanoparticles
… has been documented in a variety of pristine and contaminated environments, minimal information exists on the mechanisms causing this arsenic mobilization. Arsenic mobilization was studied by conducting controlled microcosm experiments containing an arsenic-bearing ferrihydrite and an …
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Anthropogenic and natural radioisotopes as tracers for contaminant sources and particulate fluxes
… the coast of Japan, reconciles the sources of contaminated waters, and assesses the application of 137Cs/90Sr, 129I/137Cs, and 129I/90Sr as oceanic tracers. The analysis of activity ratios suggests a variety of sources, including ongoing sporadic and independent releases of radiocontaminants. …
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Bioremediation of heavy metal polluted water using immobilized freshwater green microalga, botryococcus sp.
… efficient in the bioremoval of heavy metals from contaminated waters and also have great potential in the biotransformation of toxic compounds to less-toxic forms.
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Bioremediation of heavy metal polluted water using immobilized freshwater green microalga, botryococcus sp.
… efficient in the bioremoval of heavy metals from contaminated waters and also have great potential in the biotransformation of toxic compounds to less-toxic forms.
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Anthropogenic and natural radioisotopes as tracers for contaminant sources and particulate fluxes
… the coast of Japan, reconciles the sources of contaminated waters, and assesses the application of 137Cs/90Sr, 129I/137Cs, and 129I/90Sr as oceanic tracers. The analysis of activity ratios suggests a variety of sources, including ongoing sporadic and independent releases of radiocontaminants. …
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The effects of a toxic metals spill on aquatic fauna in streams near Culpeper, Virginia
… The stream is a tributary of Jonus Run whose waters eventually empty into the Rappahannock River. A waste-chemical landfill, located on a different first-order stream, but within the same vicinity and watershed, also threatens the water quality of the area. It is known as Lamphier landfill and …
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Uptake of manganese into the exoskeleton of the swimming crab Liocarcinus depurator (L.) in relation to biomonitoring and biosorption
… a common member of the benthic fauna in Scottish waters, and is often caught as bycatch from the common lobster fishery grounds. This study aims to employ the species in relation to the biomonitoring potential for Mn in the Scottish inshore waters and in UK monitoring programmes by choosing Loch …
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Resin-based method for concentration of enteric viruses and F-RNA coliphages from water samples
Fecal contamination of source and recreational waters represents a public health concern due to potential content of human pathogens, and the variety of sources from which an individual may be exposed to such contamination. Enteric viruses such as noroviruses, rotaviruses, adenoviruses and …
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Examining the Impact of Mercury on Waterfowl with Implications for Human Health and Water Management in Arid Environments
… in wood ducks along the lower Carson River watershed in western Nevada. Mercury (Hg) contamination of the Carson River dates back to the Comstock era mines in the late 1800's, where Hg amalgamation methods were used to extract silver and gold from ore deposits. Wood ducks frequently use this …
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Using untreated and nanobubble-treated potable and wastewater in mortar
… brackish water, seawater, greywater, and other contaminated waters; however, these normally possess high levels of dissolved salts, organic matter, surfactants, and biological contaminants that may impact cement hydration, strength development, and durability. This illustrates that the treatment …
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