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 contamination"”.
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Heavy metal contamination in the Black River, Cape Town
… total and background concentrations of selected heavy metals were researched and utilized in the effort to quantify heavy metal concentrations derived from anthropogenic sources in the Black River . The findings were intended for use in the aim of producing sediment quality guidelines (SQG) for …
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An assessment of heavy metal contamination of groundwater in George compound of Lusaka
This study investigated groundwater contamination in a suburban area of George Compound located on the outskirts of the city of Lusaka in Zambia. The aim was to assess heavy metal contamination of groundwater and the local people’s awareness about the contamination in the study area. The objectives …
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An assessment of heavy metal contamination of groundwater in George compound of Lusaka
This study investigated groundwater contamination in a suburban area of George Compound located on the outskirts of the city of Lusaka in Zambia. The aim was to assess heavy metal contamination of groundwater and the local people’s awareness about the contamination in the study area. The objectives …
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Assessment of heavy metal contamination in flooding area case study at Sungai Pahang and Sungai Kelantan
The news on of heavy metal contamination in environments especially in rivers is increasing nowadays. Uncontrolled urbanization in catchments, industrialization, improper dredging management and agricultural have caused the rivers to faced serious water and sediment pollution problems. Floods speed …
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The Central Stoneroller, Campostoma Anomalum, as an Indicator of Heavy Metal Contamination Using Otolith Age Determination and Growth Analysis
… was investigated as a potential bioindicator for heavy metal pollution. This species is a benthic algivore and detritivore that is exposed to heavy metals that accumulate in the sediment. It was hypothesized that young-of-the-year stonerollers from an impacted site would exhibit a reduced growth …
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Soil microbial community structure and function of agriculturally used Mollisols in the periurban area around Buenos Aires, Argentina, with emphasis on pesticide and heavy metal contamination
… is increasingly concerned about an environmental contamination because of an enhanced application of pesticides and heavy metal containing fertilisers in the course of which organic management systems are getting increasing attention. The green belt is agriculturally used in manifold ways. Besides …
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Farming in the city: how the urban environment affects vegetable crop production, soil heavy metal contamination and nutrient dynamics, produce nutritive quality, and insect dynamics in urban gardens
… probes were used to assess soil nutrients, heavy metal contamination, and soil microbe dynamics. Fruit quality measures included soluble solids, total phenolic content (TPC), and two antioxidant capacity assays (FRAP and DPPH). Insect abundance and diversity was measures using yellow sticky …
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Heavy metal distribution in Wrigley Head, Moston Brook, Greater Manchester,Northwest England : implications for risk assessment and remediation
Heavy metal contaminated sites pose potential environmental and health problems and represent a great barrier to the beneficial use of contaminated sites. Therefore, the study of heavy metal contamination is a vital knowledge gap which, when filled, will facilitate development of sound management …
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An Assessment of Heavy Metal Concentrations in Surface Sediments from the Knysna Estuary
… surficial sediment samples in respect of total heavy metal concentrations, sediment grain size, and total organic carbon within 36 surface sediment samples from the Ashmead Channel in the Knysna Estuary. 15 surface sediment samples were also analysed from Chongming Island in the Yangtze Estuary …
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Soil carbon dynamics in the upper Mersey estuarine floodplain, northwest England : implications for soil carbon sequestration
… attempt has been made to examine the effects of heavy metal contamination on these processes. This represents a knowledge gap that needs to be filled to understand better soil carbon decomposition in contaminated estuarine floodplains and the implications for carbon sequestration. The current …
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Assessment of the suitability of composted sewage sludge as an adsorbent for the treatment of heavy-metal contaminated wastewater, with special reference to cadmium
… of sewage sludge in South Africa contains heavy metal concentrations which are deemed to be above threshold limits for its use as a fertiliser. Furthermore, sewage sludge has a high affinity for heavy metals. Until the sources of heavy metal contamination of municipal sewage sludge are …
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An evaluation of river catchment quality in relation to restoration issues.
… of the River Rother were analysed for selected heavy metal concentrations at 12 locations along the river in order to discover whether the high concentrations, reported in previous studies from 1982 to 2002, had changed. The aim was to review the levels of heavy metal contamination along the …
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Growth Rate and Performance Effects on Watersnakes (Nerodia Sipedon) from Dietary Exposure to Heavy Metals
… are needed to enhance the understanding of heavy-metal contamination effects in reptiles. KEYWORDS: Nerodia sipedon, heavy metals, reptiles toxicology, mining waste, growth rates and, performance measures
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Impacts of legacy mining on stream structural and functional processes in an urban stream
… such as land-use changes combined with heavy metal contamination it is important that we study them using more robust, complementary approaches. This dissertation characterizes the stream from a structural approach looking at physicochemical characteristics and species diversity and …
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Measurement and behaviour of heavy metals in the marine environment of Singapore
Concentrations of heavy metals were determined in the water column (including the sea-surface microlayer (SML), subsurface, mid-depth and bottom water) and sediments at two sampling sites (Kranji in the northwest, and Pulau Tekong in the northeast of Singapore) with contrasting hydrodynamic …
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Detecting anthropogenic impacts on estuarine benthic communities
… stressors (sedimentation, nutrient loading, and heavy metal contamination) on estuarine benthic communities. Using Gradient Forest analysis, I explored the relative importance of environmental factors, operating across multiple spatio-temporal scales, in influencing patterns of compositional …
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System considerations in converting sugar mill waste to Bio-CNG
… fields as a disposal method. Subsequently, the heavy metal contamination and over-fertilization of cane fields and spillage to nearby waterways due to excess press-mud has raised serious environmental concerns. This study takes a look at a possible method to mitigate air, water and health …
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Removal of Heavy Metals Using Modified Limestone Media: Zinc and Cadmium
<p>Heavy metal contamination is a serious concern throughout the world. Increased concentrations in drinking water have many negative impacts on human health. Limestone is an inexpensive and simple media for removing high concentrations of heavy metals from drinking water supplies. Ferric based …
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Electrokinetic bioremediation technique on contaminated landfill soil by pseudomonas putida
… researchers are finding solutions to remediate heavy metal contamination in soil. The Electrokinetic Remediation (EK-R) treatment is one of the methods that can be used for the removal of heavy metals. By combining with other techniques such as Bioremediation would likely increase the …
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The Influence of Land Coverage and Soil Chemical Factors on Soil Bacterial Community Diversity and Structure in Cedartown, GA, USA
<p>Heavy metals pose serious threats to organisms due to their mobility and solubility in soil. Bacteria communities are vulnerable to heavy metal stress, but the response of different bacterial groups may vary depending on the level and type of heavy metal contamination. When subjected to heavy …
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