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 65 for “"mine tailings"”.
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Geo-tiles: manufacturing tiles from copper mine tailings using geopolymerisation
… feasibility of using aluminosilicate-rich mine waste, termed tailings, as the primary raw material to produce tiles using the low-energy geopolymerisation process. Traditional efforts to increase sustainability of ceramic tile manufacturing include waste valorisation to reduce virgin raw …
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Applications of phytase-mediated phosphate biomineralizaton for the remediation of uranium mine tailings
… naturally occurring radionuclides.;Phosphate mineral phases have been researched as a method of immobilising contaminants including lead, radium, and uranium as natural analogues demonstrate that these metals can be stably incorporated into phosphate minerals over geological timescales and …
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Complementary approaches to integrate microbial diversity into revegetation and phytoremediation on abandoned mine tailings
Mine tailings are the principal byproduct of ore processing for metal extraction. They represent an important source of contamination for the surrounding environment due to wind-driven dust dispersion, water erosion, and leaching. Composed mainly of silt- or sand-sized grains, tailings are low in …
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Trace element pollution of soils by abandoned gold mine tailings near Potchefstroom, South Africa
Please read the abstract in the section 00front of this document
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Economic Potential of Rare Earth Elements Within Accessory Minerals of Granitic Pegmatite Mine Tailings
… the economic feasibility of repurposing current mine waste tailings as a rare earth element resource. Spruce Pine is home to several active quartz and feldspar mining operations, with large waste tailing piles generated during the separation process for quartz and feldspar. The mineralogy, …
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Investigating the Genetic, Evolutionary, and Functional Mechanisms of Adaptations to Copper Mine Tailings in Mimulus guttatus
… What genes are involved in adaptations to copper mine tailings? How do they contribute to tolerance, and what do they teach us about how copper tolerance evolved? In my dissertation, I address these questions to gain a better understanding of this rapid local adaptation. </p><p>To better …
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The viability of using gold mine tailings as a substitute for fine aggregate in concrete mixes
… for building materials, some of which requires mined natural resources. These materials produce large volumes of mining wastes (also known as tailings) which have environmental and economic implications. This research investigates the potential of recycling gold mine tailings from the …
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Phosphorus adsorption on sandy mine tailings: a comparison of treatments with fertilizers, wood ash, and compost
… productivity can be maintained with treated mine tailings. Since P is usually a limiting plant nutrient, proper P fertilization is essential for continued agricultural productivity. Seven different soil systems including unamended tailings (UT), a series of 5 treatments with fertilizers, wood …
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A technical and economic feasibility study on repurposing copper mine tailings via microbial induced calcium carbonate precipitation
… the sand aggregate used to grow bio-bricks with mine tailings. The increasing global demand for metal products has resulted in the concurrent production of vast volumes of waste mine tailings which, if left untreated, pose a potential risk of leaching toxins into surrounding populations and …
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The importance of autochthonous microbial communities in the sustainability of vegetation for the phytomanagement of semiarid mine tailings
[SPA] Los depósitos de estériles mineros (o balsas mineras) se encuentran formados por los residuos procedentes de las labores de concentración de minerales, y están considerados como uno de los principales problemas medioambientales asociados a las antiguas zonas de minería metálica. Los …
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Expression patterns of antioxidant network in pioneer plants from mine tailings polluted with high levels of heavy metals
[SPA] La intensa actividad minera llevada a cabo en el distrito minero de Cartagena-La Unión durante más de dos mil quinientos años ha generado un gran volumen de residuos, muchos de los cuales se acumulan en balsas de estériles. Aunque la mayoría de estas balsas carecen de vegetación, en …
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Ecological restoration of lead/zinc/copper mine tailings: Phytomanagement and amendment strategies to enhance substrate functionality and biomass production
“The extreme physiochemical characteristics of mine tailings inhibit microbial processes and natural plant growth. Consequently, vast and numerous tailings sites remain barren for decades and highly susceptible to wind and water erosion. Phytostabilization is a cost-effective and ecologically …
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Assessment of selected properties of mine tailings at the former Kabwe mine and their potential to support plant growth
Lead (Pb) and Zinc (Zn) were mined in Kabwe from 1904 to 1994, generating large quantities of solid mine waste. Among the solid wastes, were tailings from the leach plant which are now an environmental concern because of their high contents of Pb, Zn and other potentially toxic metals. To prevent …
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Assessment of selected properties of mine tailings at the former Kabwe mine and their potential to support plant growth
Lead (Pb) and Zinc (Zn) were mined in Kabwe from 1904 to 1994, generating large quantities of solid mine waste. Among the solid wastes, were tailings from the leach plant which are now an environmental concern because of their high contents of Pb, Zn and other potentially toxic metals. To prevent …
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Bioprospecting of plants species with potential to uptake inorganic chemical species from gold mine tailings and acid mine drainage
… This is due to the exposure of sulphide-bearing minerals such as pyrite (FeS2) to oxygenated water during and after the extraction of ore deposits which results in the formation of acid mine drainage (AMD). Acid mine drainage is characterised by low pH ranging between 1-4, high concentration of …
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ECOLOGICAL AND SOCIOLOGICAL IMPLICATIONS OF TISZA RIVER MINE TAILINGS POLLUTION AND EFFECT OF CHRONIC CADMIUM EXPOSURE ON FISH PHYSIOLOGY
… of metals in freshwater is contamination by mine tailings, a toxic slurry of waste rock and chemicals left over after ore minerals or coal extraction. Mining waste is most often stored in retention ponds, which sometimes leak or fail. One of the worst mine tailings disasters on record …
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