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 42 for “"Heavy Metal Pollution"”.
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Effects of Heavy Metal Pollution on the Loggerhead Sea Turtle
Historically, heavy metal research on sea turtles has been focused on deceased specimens, limiting the ability to determine if the concentrations of heavy metals affected the health of the individuals. More recently, the collection and analysis of blood samples from live turtles has enabled the …
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Environmental impact of heavy metal pollution in natural aquatic systems
The distribution of heavy metals between soil and soil solutions is a key issue in evaluating the environmental impact of long term applications of heavy metals to land. Contamination of soils by heavy metals has been reported by many workers. Metal adsorption is affected by many factors, including …
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Heavy metal pollution and blackheaded gull (larus ridibundus L.) breeding ecology
Heavy metals in air, soil and water are a global problem and present a growing threat to the environment. These metals may have profound consequences for birds and can cause a number of sub-lethal effects, such as decreased reproductive success. The concentrations of selected heavy metals (As, Cd. …
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To Assess the Level of Heavy Metal Pollution in Groundwater in Ilala Dar es salaam
This study aimed at evaluating the level of heavy metal pollution in the groundwater in Ilala Dar es Salaam. The potential sources of heavy metals in Dar es Salaam city include: auto-repair shops, informal sector activity premises, small to large scale industries, on-site sanitation systems, poor …
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An Investigation of Heavy Metal Pollution Impact on Drinking Water Quality in the Birim River Sub-Basin of Ghana
… in the process. This study aimed to investigate heavy metal pollution in the Birim River Sub-Basin and develop a community participation module to manage the threats of heavy metal pollution the drinking water in surrounding communities. The study was based on 192 samples collected from Kibi and …
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Environmental assessment, documentation and spatial modeling of heavy metal pollution along the Jordan Gulf of Aqaba using coral reefs as environmental indicator
… and used to determine spatial distribution of pollution. The second phase included three 20cm-deep cores obtained from within the industrial zone. These cores were drilled from pre-dated communities, where the growth rate was determined earlier to be 10mm y-1, therefore the core obtained …
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Impact of mine pollution of composition, diversity and structure of plant and ground-dwelling invertebrate communities around Kombat mine tailing dump, Namibia
The impact of heavy metal pollution on vegetation and communities of ground-dwelling invertebrates was investigated at Kombat Mine tailings dump in Namibia. Sixteen transect lines were marked around the dump. Plots, 15m x 15m, were marked at 50m intervals along each transect. Top soils in the …
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The use of lipid profiles from immobilised selenastrum capricornutum in the biological surveillance of freshwaters
… was investigated as a potential indicator of heavy metal pollution in freshwater environments. The toxicity of Cu", Zn 2 and Cd2t on algal growth was determined and the effective concentration inhibiting specific growth rate by 50 % (EC5 0) for each metal was found to be 124 pM Cu, 20 pM Zn …
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An assessment of wetland vulnerability to artisanal mining in Zimbabwe
… decline, riverbed sedimentation, and heavy metal pollution. Subsequently, the study investigated in the Umzingwane Catchment, located in southern Zimbabwe as a case study, to analyse variations in water nutrient and metal concentrations in wetlands affected by illegal mining activities …
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GENOMIC AND PHYSIOLOGICAL INSIGHTS INTO BACTERIAL HEAVY METAL RESISTANCE MECHANISMS FOR ENVIRONMENTAL DECONTAMINATION
The contamination of soils and waters with heavy metals (HM) such as chromium, copper, zinc and cadmium represents one of the most severe environmental challenges, posing risks to ecosystem balance and human health. Microorganisms and plants have evolved a range of mechanisms to tolerate, transform …
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Development of teawaste based bio-sorbent materials for removal of Cr(VI) from wastewater
In recent years, the serious problem of water heavy metal pollution affects human health and the stability of the ecological environment. Hexavalent chromium in industrial waste water is a common typical heavy metal ion. Therefore, how to effectively treat heavy metal pollution in water has become …
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The Development of Ionophore-Selective Based optical chemical sensors for the determination of heavy metal ions in aqueous environments
… in-situ, real-time and low-cost monitoring of heavy metal ions is a tremendously and fast growing area of research. This work presents several novel sensing strategies for developing optical chemical sensors that can be used as early warning devices for heavy metal pollution in water. The …
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Syntheses, Structures and Properties of Metal-Organic Frameworks
<p>Mercury is one of the most serious heavy metal pollution sources that threaten people’s health. For decades, people have developed many technologies and materials to capture mercury from flue gas of coal-fired plant. Currently, the most effective material for mercury absorption is powdered …
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The distribution and accumulation of mercury, lead, and cadmium in selected species of the northern California intertidal mussel bed
… intention that they would represent an index of heavy metal pollution for a given area under different seasonal and other variable conditions. Samples for monitoring were collected from two different sites. The first site was immediately outside the entrance to San Francisco Bay and located …
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Metal contamination and methane oxidising bacteria around a formerly industrialised suburban river.
Heavy metal pollution is a very prominent problem persisting globally at the present time. Many technologies have been put forward to remediate such pollution. Bioremediation is a promising and eco-friendly tool to resolve environmental pollution. Microbes belonging to diverse phylogenetic groups …
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Metal contamination and methane oxidising bacteria around a formerly industrialised suburban rive
Heavy metal pollution is a very prominent problem persisting globally at the present time. Many technologies have been put forward to remediate such pollution. Bioremediation is a promising and eco-friendly tool to resolve environmental pollution. Microbes belonging to diverse phylogenetic groups …
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Synthesis and characterisation of low-cost biopolymeric/mineral composite systems and evaluation of their potential application for heavy metal removal
Heavy metal pollution and waste management are two major environmental problems faced in the world today. Anthropogenic sources of heavy metals, especially effluent from industries, are serious environmental and health concerns by polluting surface and ground waters. Similarly, on a global scale, …
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