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 125 for “"Contaminated water"”.
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Using agricultural wastes to treat lead-contaminated water in Western Australia
Aqueous solutions are becoming increasingly contaminated in all parts of the world (2015). Heavy metals are toxic contaminants that are mainly distributed in urban stormwater run-off and industrial wastewaters as a result of some mining operations, electronic assembly planting, battery …
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Remediation of endocrine disruptor in contaminated water through advanced oxidation processes
El problema originado por la escasez de agua en determinadas zonas del planeta se agudiza en gran manera por la contaminación de la misma debido al vertido indiscriminado de residuos generados por la actividad del hombre, lo que supone una amenaza para el medio acuático y en consecuencia para la …
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DEVELOPMENT OF FUNCTIONAL NANOPARTICLES AND COMPOSITE MEMBRANES FOR TREATING ARSENIC CONTAMINATED WATER
… OF ARSENIC IN DEEPER LEVELS OF GROUNDWATER HAS BECOME A HIGH-PROFILE PROBLEM IN RECENT DECADES, CAUSING SERIOUS ARSENIC POISONING TO LARGE NUMBERS OF PEOPLE. THERE IS NO MEDICAL CURE FOR ARSENIC POISONING; THUS, THE SOLUTION TO THE THREAT OF ARSENICOSIS IS PREVENTING ARSENIC EXPOSURE. …
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Elemental trauma: A case study of living with contaminated water near sites of Marcellus Shale gas extraction
… the experiences of individuals living with contaminated water near sites of unconventional Marcellus Shale extraction (commonly called “fracking”) in western Pennsylvania. Five individuals across three households were recruited following IRB approval. Fieldwork was completed in a small town …
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The use of biofiltration cells to filter contaminated water flowing from a slum settlement in South Africa
… urban surface runoff degrades the receiving water bodies and impacts on downstream water quality and ecological systems. In response, there is growing research attention that is focused on how to treat surface water runoff before it is discharged into these water bodies which includes using a …
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Uptake of copper and cobalt by pumpkin (cucurbita maxima) and chinese cabbage (brassica oleracea) irrigated with contaminated water on sandy loam and clay loam soils.
… with different soil types in Zambia using waste water which is potentially contaminated with heavy metals like copper and cobalt. The objectives of this study were to establish the effect of loading rates of heavy metals on sandy and clay loam soils and establish factors that influence …
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Uptake of copper and cobalt by pumpkin (cucurbita maxima) and chinese cabbage (brassica oleracea) irrigated with contaminated water on sandy loam and clay loam soils.
… with different soil types in Zambia using waste water which is potentially contaminated with heavy metals like copper and cobalt. The objectives of this study were to establish the effect of loading rates of heavy metals on sandy and clay loam soils and establish factors that influence …
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Targeted Degradation of Trinitrotoluene Using Iron (II)-Cyclodextrin-Peroxide Systems
… of 2,4,6-trinitrotoluene (TNT) in soil and groundwater near former production and processing plants generate large environmental concerns. A cyclodextrin (CD) mediated Fenton remediation of TNT contaminated water and sand (soil analogy) is presented. Kinetic studies were performed to elucidate the …
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Towards sustainable water management in the context of coal mining in South Africa: A critical reflection of the ongoing Lephalale coal mining project
… Such is the case with the right to access to water. Mining is one of the biggest contributors to water pollution, which impacts negatively on human life, particularly when heavy-metal-contaminated water is used. Water as an essential constituent of life is under threat in Limpopo Province, …
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ADSORPTION OF ANTIBIOTICS BY VERMICULITE
… effective methods for antibiotics removal from contaminated water. In this thesis work, the adsorption of four antibiotics, namely chlorotetracycline (CTC), oxytetracycline (OTC), ofloxacin (OFL), and enrofloxacin (ENR), onto natural vermiculite has been studied using batch (static) and column …
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Optimal control of a biological waste-water treatment plant
… control problem of minimizing concentration of contaminated water at terminal time T is stated and solved. Optimal solutions are obtained analytically with the use of Pontryagin's Maximum Principle.
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Prediction of multicomponent ion exchange a ternary system
Often in nitrate contaminated water, sulfate is the primary anion which affects the ionexchange system between nitrate and chloride anions. The generally accepted selectivity sequence [4, 11,14] for commercially available strong-base anion exchangers in dilute aqueous solution is sulfate > nitrate …
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Removal of organic pollutants present in water using inorganic-organic Hybrid Multifunctional Nanocomposites
… for the removal of organic dye pollutants from contaminated water samples. Nanocomposites were functionalised to remove dyes via adsorption, photocatalytic breakdown and separation of the nanocomposites from water by simple magnetism. Two types of nanocomposites were produced, carbon based …
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Evaluation and implementation of adsorption technologies for the treatment of per and polyfluoroalkyl substances
Contamination of water resources by per- and polyfluoroalkyl substances (PFAS(s)) has recently emerged as a significant problem worldwide. Applications of PFASs in household products, electronics, and firefighting foams has created substantial environmental remediation challenges in the treatment …
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Comparative Bioavailability of Dietary and Dissolved Cadmium to Freshwater Aquatic Snails
… systems was investigated by exposing freshwater snails to dietary or dissolved sources of cadmium. Snails were exposed to control, contaminated food only, contaminated water only, and contaminated food and water treatments. During the 15-day exposure, samples were taken to determine Cd …
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The removal of perchlorate from waters by a membrane-immobilized biofilm
… biofilm reactor to remove perchlorate from waters. Perchlorate (ClO4 -) is easily reduced under anaerobic conditions to harmless chloride (Cl-). In this system, the perchlorate-contaminated water is physically separated from the biofilm by the membrane. Perchlorate diffuses, without the need …
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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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Engineering yeast for heavy metal waste remediation
… sources, and disposal of electronic goods have contaminated water sources with heavy metals causing enviornmental damage and public health concerns. Despite the urgent need to contain and remove metals from the environment, there still does not exist robust and complete remediation technologies. …
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Analysis of Organic Pollutants by Micro Scale Liquid-Liquid Extraction and On-column Large Volume Injection Gas Chromatography
The analysis of organic pollutants in water is traditionally done following EPA procedures which commonly use liquid-liquid extraction. One liter of water is extracted three times with 60 mL of an organic solvent. The extract is concentrated and analyzed by gas chromatography. This procedure is …
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