air to water Articles
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The Damage Caused to the Environment in the Context of the Sustainable Development of Society
The opportunity to use the tangible resources of our planet – water, air, subterranean depths – secure the existence of our civilization. Despite the existence of private property and the division of ownership of tangible resources between natural and legal persons, the resources required for life are objectively determined by the very life form. Any living creature needs air, water ...
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Synthesis of titania particles with high photocatalytic activity by high–temperature hydrolysis of TTIP in gas phase
Recently, the photocatalytic activity of titania has attracted considerable attention for solving various environmental problems. Photocatalysis is considered to be effective in air purification, water purification, and used for dealing with various types of environmental pollution. The smaller the particle size of titania, the faster the photocatalysis proceeds. Since our previous study revealed ...
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Key Environmental Issues: Views from Inside the Beltway and Beyond
With the mid-term elections fast approaching, the Bush Administration is probably feeling a bit unsettled about its ability to defend its record on environmental accomplishments. As Jim DiPeso’s column in the spring issue of Environmental Quality Management confirmed, most Americans (74 percent of those questioned) profess to value government programs designed to keep pollution out of the air ...
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Canada`s Ecosystem Initiatives
Canada’s Ecosystem Initiatives are aimed at creating a healthy environment and healthy communities through multi-partnerships, focusing on science, sharing in-formation and experiences, pooling resources, and ecological priorities. The com-mon goals of all ecosystem initiatives are to improve air quality, water quality and to protect important habitats and species through partnerships between ...
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Investigation of national IPPC permitting
The task AEA Energy & Environment* was contracted to conduct a study to determine how the European Commission’s Integrated Pollution Prevention & Control (IPPC) Directive is being implemented by Member States. How we helped The Directive aims to achieve a high level of protection of the environment taken as a whole by, in particular, preventing or, where that is not ...
By Ricardo-AEA
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Elimination half‐life as a metric for the bioaccumulation potential of chemicals in aquatic and terrestrial food chains
The assessment of chemicals as bioaccumulative in the regulatory process makes use of the bioconcentration factor as a metric. However, this metric does not account for the dietary uptake route and therefore cannot be applied to terrestrial food chains. In recent years, the biomagnification factor (BMF) and the trophic magnification factor (TMF) have been suggested as standard metrics for ...
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Legal Lookout: Water Quality Trading: What's It All About?
Untitled Document Since EPA issued its final Policy on Water Quality Trading in 2003, state and local governments have been encouraged to develop trading programs to provide enhanced water quality at reduced costs. Background Pollution credit trading has been promoted by many as a sensible and much needed tool for addressing air and water pollution, as ...
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Nanostructured phospholipid membranes
This review describes a simple high-throughput method for producing laterally nanostructured monolayer and bilayer films on planar surfaces based on the Langmuir-Blodgett transfer of a phase-separated phospholipid mixture from the air/water interface to a solid support. Applications of the patterned lipid films to spatially direct the adsorption of proteins and to demonstrate stereoselective ...
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A contingent valuation study of Winnipeg municipal water using bounded rationality
Contingent valuation (CV) is a survey technique used to value environmental goods not traded in markets, such as improvements to air or water quality. Despite its popularity, widespread acceptance of this methodology has been hampered by controversies stemming from numerous behavioural anomalies such as preference reversals, embedding and starting point bias. This study argues that these ...
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Three dimensional Eulerian-Eulerian simulation on hydrodynamics in dissolved air flotation tank with different turbulence models
The Eulerian-Eulerian approach is used to simulate the two phase flow of air and water in a dissolved air flotation (DAF) tank. Unsteady simulation is adopted to obtain the quasi-steady result. The two dimensional model cannot capture the three dimensional feature of flow pattern in the tank. The three dimensional model reproduces the stratification structure observed in the experiment and ...
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UK Environment Act 2021 and Biodiversity Net Gain
Overseen by the newly created Office for Environmental Protection, the Environmental Act 2021 creates a post Brexit framework to improve and protect the natural environment in the UK. It makes wide ranging provisions covering waste and recycling, air quality, water, nature and biodiversity, conservation covenants and updates to laws on chemicals. Planning Implications of the Act The planning ...
By WKC Group
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What Is Natural Capital, Anyway?
Wikipedia defines natural capital as “the stock of natural ecosystems that yields a flow of valuable ecosystem goods or services into the future” — a definition that’s begging to be translated into plain English. In this easy-to-comprehend, and at times hilarious, video from the World Business Council for Sustainable Development, we learn that natural capital is ...
By Ensia
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RCRA Regulation of Wastes from the Production, Use, and Disposal of Nanomaterials
The booming growth of nanotechnology in the U.S. economy has already begun to create an expanding universe of wastes from the manufacture, use, and disposal of products containing nanomaterials. Just as nanomaterial products offer useful novel properties, nanomaterial wastes may present regulators with unexpected and unique questions. Researchers are trying to assess how nanomaterials and ...
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Project - Second Line for Brandown - Sydney, Australia
The processing capacity of a system determines the cost per ton. Therefore, Brandown decided to expand their in 2005 bought 1000 tons per day system, to a 1500 ton per day capacity. More is Less We installed a pre-grinder to improve availability. Then we added an extra large spacial flatscreen for fines and a second 3-way air separator. The water bath separator made it possible to produce clean ...
By Waltec BV
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Do you have any gloves that conform to EN 374-3 for Resistance to Chemical Permeation?
Q: Do you have any gloves that conform to EN 374-3 for Resistance to Chemical Permeation? A: Yes – the Bodyguards powder free Nitrile gloves in their GL890 range conform to this standard and have undergone the rigorous testing required to meet it. You should still bear in mind the chemical compatibility of your gloves with the chemicals you are using though. How are gloves assessed for ...
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Evaluation of the three‐phase equilibrium method for measuring temperature dependence of internally consistent partition coefficients (KOW, KOA and KAW) for volatile methylsiloxanes and trimethylsilanol
Partitioning equilibria and their temperature dependence of chemicals between different environmental media are important in determining the fate, transport, and distribution of the contaminants. Unfortunately, internally consistent air/water (KAW), 1‐octanol/air (KOA), 1‐octanol/water partition coefficients (KOW), and the information of their temperature dependence, are scarce for ...
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Contrasting suspended covers reveal the impact of an artificial monolayer on heat transfer processes at the interfacial boundary layer
The highly variable performance of artificial monolayers in reducing evaporation from water storages has been attributed to wind speed and wave turbulence. Other factors operating at the interfacial boundary layer have seldom been considered. In this paper, two physical shade covers differing in porosity and reflectivity were suspended over 10 m diameter water tanks to attenuate wind and wave ...
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Liquid-gas mass transfer at drop structures
Over the last decades, considerable progress has been made in the understanding of the sulfur cycle in sewer systems. In spite of a wealth of experimental and field studies that have addressed the release of hydrogen sulfide from free surface flows in gravity sewers and the corresponding air-water mass transfer, little is known about hydrogen sulfide emission under highly turbulent conditions ...
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Comparison of spectrometry with arsenazo III and neutronic activation for U and Th determination in phosphogypsum
Phosphogypsum is a byproduct from the phosphoric acid industry which is formed by crystallisation during sulfuric acid attack on phosphate rocks. While the composition of phosphogypsum is dihydrated calcium sulphate, the material can contain high levels of impurities that exist in phosphate rocks, such as radionuclides from the 238U and 232Th series. The most common way of disposing of ...
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An approximate analytical method to size an air vessel in a water supply system
The size parameters of an air vessel, mainly including its initial gas volume and total volume, account for its performance in hydraulic transients. Traditionally, the size of an air vessel in a given water supply system is estimated by trial and error, usually aided by computers. To simplify the preliminary estimation of the air vessel's volume, in this paper, an approximate analytical ...
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