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Showing 1 to 20 of 21 for “"point of use (POU)"”.
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Understanding Practical Limitations of Lead Certified Point of Use (POU) Filters
There has been a recent increase in the adoption of point-of-use (POU) household water filters as an alternative to untreated tap water or bottled water. POU filters certified for lead removal have recently been distributed by the hundreds of thousands in communities amid water lead crises, as a …
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Understanding Mechanisms of Water Lead Contamination by Nitrate Spallation Corrosion and Lead Removal by Point-of-Use (POU) Filters
Lead enters drinking water by a process of corrosion, dissolution or particle detachment from lead bearing plumbing materials. Preventing contamination of water from lead-tin solder corrosion and achieving effective removal of particulate lead by point-of-use (POU) filters are important public …
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Kinetics, mass transfer, and mass re-equilibrium for arsenate adsorption on iron oxide-based carbons
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI-COLUMBIA AT AUTHOR'S REQUEST.] Removal of arsenic (As) from drinking water sources is much needed worldwide, and small water treatment systems, such as point-of-use (POU) treatment, could be an effective solution for residential applications. …
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Statistical Evaluation of the Factors causing Microbial Growth in Point-of-use Filters
… and its related health concern in the DC area, Point-of-Use (POU) filters were installed at public schools to reduce lead concentrations in water. However, the installation of POU filter could possibly lead to the growth of bacteria inside the filters, which could lead to health concerns. …
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Educational Concerns of Implementing Biosand Water Filters in Rural Uganda
<p>The world is facing a shortage of clean drinking water. Current predictions, due to growing population, urbanization, and climate change estimate access to clean water to be further challenged in the coming years. Research has indicated that point of use (POU) technologies are likely to be the …
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Springing for Safe Water: Drinking Water Source Selection in Central Appalachian Communities
There are rural residents of Central Appalachia that collect their drinking water from roadside springs despite having access to in-home piped point-of-use (POU) water. Residents have cited perceptions about water availability/quality as primary motivators for collecting drinking water from …
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Synthesis of anion exchange/activated carbon fiber hybrid materials for aqueous adsorption of toxic hexavalent chromium
… water supplies in United States. An effective, Point-of-Use (POU) based technology to remove Cr(VI) in tap water is urgently needed to protect human beings against this carcinogen. Due to the inadequate state-of-the-art technology for rapid, selective removal of Cr(VI), a unique hybrid activated …
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Point of Use Semi-Batch Reverse Osmosis Desalination Prototype Experimental Validation
… reliable access to treated piped water. A range of desalination systems exists, from large seawater distillation plants in Kuwait to home-scale point-of-use (POU) reverse osmosis (RO) purifiers in India. However, current home-use systems produce significant amounts of wastewater, achieve a …
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Architecture and unit design of a capital cost optimized, household electrodialysis desalination device with continuous flow
… the urban Indian setting. Currently, a majority of point-of-use (POU) purifiers use reverse osmosis (RO) to desalinate household water. However, RO purifiers waste up to 70% of the feed water when used in the domestic context. Electrodialysis (ED) is a water-efficient alternative means of …
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Effects of installing point-of-use filters intended for lead removal on drinking water quality
… system can lead to elevated concentrations of toxic metals and harmful microorganisms that pose a risk to human health. Premise plumbing systems can be sites of elevated lead concentrations from lead service lines and are favorable environments for biofilm-forming opportunistic pathogens. To …
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Sustainable Nanomaterials Combined with Raman Spectroscopy-based Techniques to Advance Environmental Sensing
The propagation of contaminants in the environment continues to threaten public health and safety. Conventional analytical techniques for environmental detection require centralized facilities and intensive resources for operation. An effective implementation of a wide network of field deployable …
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Design and construction of a novel reconfigurable micro manufacturing cell
… tools. This results in the inadequate usage of resources, including energy, space and time. In the 1990s, the concept of a microfactory was introduced in order to achieve better usage of these resources by scaling down the size of the machine tool itself. Several industries can benefit from …
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Technological Development of Chemical Sensors for Healthcare and Safety Applications
The development of Point-of-Use (PoU) sensors is driven to provide simple, rapid and reliable test results for applications that require quantitative analysis, in particular in resource-limited settings. To bring a more comprehensive range of tests into the PoU, there is a need to evaluate and …
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Occurrence of Per- and Polyfluoroalkyl Substances (PFAS) in Private Water Supplies in Southwest Virginia
… polyfluoroalkyl substances (PFAS) are a class of man-made contaminants of increasing human health concern due to their resistance to degradation, widespread occurrence in the environment, bioaccumulation in human and animal organ tissue, and potential negative health impacts. Drinking water is …
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Surface chemistry design and characterization of anion exchange and activated carbon fibers for critical contaminants removal
… is devoted to the design and characterization of surface chemistry of materials based on a novel fibrous platform for rapid and selective removal of trace contaminants. The first project is to study activated carbon fiber composites (ACFCs) for removal of NH3 from air. Three series of materials …
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Supplier inventory and operations management process improvement methodology
The Building Construction Products (BCP) Division of Caterpillar makes 12 different loader, excavator, and tractor products with 10 manufacturing facilities worldwide. With relatively high volume machines, BCP saw that their supply base continued to have challenges in managing their inventory …
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Making Decentralized Desalination More Affordable Using Improved Process Design, Control, and Energy Recovery
… to meet their drinking needs. This form of decentralized treatment is performed at the community-scale, as is common in rural areas, and within individual homes, using point-of-use (POU) purifiers. This thesis develops methods to lower the costs and improve the efficiencies of two …
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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
… 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 and inadequate funds for piped water systems in individual households. …
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The Effectiveness of Point-of-Use Treatment in Improving Home Drinking Water Quality in Rural Households
Despite claims of nearly 100% access to potable drinking water in the US, issues of drinking water quality, accessibility, and equity persist in many regions of the country. Drinking water is a common health concern in rural communities, where social, geographic, and economic challenges can inhibit …
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Monitoring, modeling, and controlling membrane fouling and concentration polarization in reverse osmosis systems
… emerged as an important technology in the field of water purification and desalination, offering a highly efficient and sustainable solution for addressing the global water scarcity challenges. The development of thin-film composite (TFC) membranes recently with improved selectivity, …
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