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 24 for “"Water treatment technologies"”.
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Remediation of per and polyfluoroalkyl substances by pilot-scale applications of advanced water treatment technologies
… the environment has led to the contamination of water resources worldwide. Most conventional water treatment methods are ineffective against PFASs and while the removal of PFASs by advanced water treatment technologies including granular activated carbon (GAC), anion exchange resin (AER), …
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Numerical simulation of hydrothermal salt separation process and analysis and cost estimating of shipboard liquid waste disposal
Due to environmental regulations, waste water disposal for US Navy ships has become a requirement which impacts both operations and the US Navy's budget. In 2006, the cost for waste water disposal Navy-wide was 54 million dollars. There are many advanced waste water treatment technologies in the …
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Evaluation of Escherichia coli O157:H7 and Salmonella enterica inactivation in water by several treatment technologies
Water treatment technologies are necessary for microbial pathogen removal from potable water. Human activities, including large industries in agriculture and manufacturing, produce massive amounts of waste that invariably end up in water supplies. There will always be a need for water treatment …
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Gypsum scale formation on a heated copper plate under natural convection conditions and produced water remediation technologies review
… applications such as heat exchangers and thermal water treatment technologies. Formation of dihydrated calcium sulfate scale, also known as gypsum, on a heated copper plate is studied in lab. The copper plate, held at a given temperature, is immersed in a supersaturated solution of calcium sulfate …
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The economic impacts of the 1986 Safe Drinking Water Act amendments
… over the poor quality of the nation's drinking water began to arise. Though the Safe Drinking Water Act (SDWA) had been passed almost a decade earlier, many problems still existed. These problems included the inability of the Environmental Protection Agency to promulgate new drinking water …
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Organic fouling in membrane capacitive deionization systems
… of porous electrodes. For most low-salinity water treatment technologies, fouling is a central issue, but few studies examine the its impact on MCDI. Fouling was evaluated using synthetic saline solutions with a combination of NaCl and CaCl2 and the model organic foulant sodium alginate, …
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Evaluation of the complementary use of the ceramic (Kosim) filter and Aquatabs in Northern Region, Ghana
The Kosim filter is a ceramic water filter that is currently used in Northern Ghana. Based on prior MIT research in Northern Ghana, this technology is effective at removing 92% of turbidity, 99.4% of total coliforms, and 99.7% of E. Coli from unimproved water sources. However, the product water is …
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Bacteriophage PRD1 as a potential surrogate for adenovirus in drinking water disinfection with free chlorine, low pressure ultraviolet light, and sunlight
Waterborne pathogens are increasingly a worldwide concern in drinking water because of their ability to cause high levels of morbidity and mortality. Especially in developing regions, a lack of access to safe drinking water, adequate sanitation, and resources to implement water treatment processes …
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Development of a ceramic water filter for Nepal
… in terms of providing safe, clean drinking water for their citizens. The World Health Organization estimates that nearly 5 million people in Nepal lack access to safe drinking water while globally, 1.1 billion lack access to improved water supplies. Point-of-use water treatment technologies, …
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Pathogen Removal by Secondary and Advanced Water Reclamation for Water Reuse
As water scarcity compels regions to implement more sustainable water reuse practices, alternative options such as potable water reuse have proven to provide many water management benefits. Most potable reuse treatment systems are based on membrane technologies that are energy intensive and produce …
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Directional solvent extraction desalination
World water supply is struggling to meet demand. Production of fresh water from the oceans could supply this demand almost indefinitely. As global energy consumption continues to increase, water and energy resources are getting closely intertwined, especially with regards to the water consumption …
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Crumpled Graphene Oxide: Aerosol Synthesis and Environmental Applications
<p>Environmental technologies, such as for water treatment, have advanced significantly due to the rapid expansion and application of nanoscale material science and engineering. In particular, two-dimensional graphene oxide (GO), has demonstrated considerable potential for advancing and even …
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Investigation of novel methods to remove the cyanotoxin, Cylindrospermopsin, from drinking water.
… habitats that include brackish, marine and fresh water. The major concern among these organisms is not so much the cyanobacteria themselves but their toxin production. Under suitable circumstances, cyanobacteria can reach high biomass levels and form toxic algal blooms. These toxins, known as …
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Nanotechnology and Biotechnology for Water Treatment: A Comparative Study
… world’s population does not have access to clean water and about 1.6 million deaths are caused by contaminated water annually. Even though there are several drinking water treatment technologies available today, they are not widely distributed or suitable for all types of water contamination …
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UNDERSTANDING AND MODELING THE SORPTION ON ANION EXCHANGE RESINS USING POLY-PARAMETER LINEAR FREE-ENERGY RELATIONSHIPS AND PHASE CONVERSION
… contaminants are a growing concern for drinking water treatment due to their increasing presence in the environment. This study developed a predictive model for the sorption of anionic organic contaminants from drinking water on three anion exchange resins: a strong polystyrenic (IRA-910), weak …
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Microfluidic engineering of water purification
The demand for clean water has been increasing for several reasons, such as rapid industrialization of developing countries, environmental pollution and climate change, and development of biofuels and the resulting irrigation growth. To meet the needs for this growing demand for clean water, …
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Profiling of Microbial Communities, Antibiotic Resistance, Functional Genes, and Biodegradable Dissolved Organic Carbon in a Carbon-Based Potable Water Reuse System
Water reuse has become a promising alternative to alleviate stress on conventional freshwater resources in the face of population growth, sea level rise, source water depletion, eutrophication of water bodies, and climate change. Potable water reuse intentionally looks to purify wastewater effluent …
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Assessment of the use of ceramic water filters with silver nitrate as point-of-use water treatment devices in Dertig, North West Province, South Africa
Water borne diseases due to inadequate and unsafe drinking water is a global challenge that has led to a significant number of deaths and illnesses reported annually. These diseases are prevalent in less-developed countries, especially in rural areas where there is shortage of basic infrastructure …
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Removal of Total Organic Carbon and Emerging Contaminants in an Advanced Water Treatment process using Ozone-BAC-GAC
… with the potential to enhance sustainability of water resources if planned accordingly. Depending on the pretreatment implemented for potable reuse, emerging contaminants; such as pharmaceuticals, personal care products, industrial solvents, bacterial/viral pathogens, and disinfection byproducts, …
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Novel amorphous silica and silica xerogels for the adsorption of organic pollutants from water
The demand on water supplies is becoming more intensive, thus the need for innovative and cost effective produced water treatment technologies is rising. Produced water is the largest by-product generated by oil and gas extraction, hence, there are significant quantities requiring remediation. …
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