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Flow rate (mol sec1) Membrane surface area (m2) Pressure difference (pa) Pressure at feed side Pressure at permeate side Permeance (mol sec1 m2 pa1) Selectivity of j to f 1 Introduction The separation of gases by selective transport through inorganic ceramic membranes is a vibrant and fast growing eld in membrane technology [13].

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muffle furnace. For fine earth materials, samples were mol L 1 for 48 h at 65 °C in a thermostatic water bath, then centrifuged at 3000 g for 20 min and the then by the model validation process including variations in future climate inputs like solar

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PROPOSED ASTM METHOD FOR THE DETERMINATION OF ASBESTOS IN AIR BY TEM AND INFORMATION ON INTERFERING FIBERS. EPA Science Inventory. The draft of the ASTM Test Method for air entitled"Airborne Asbestos Concentration in Ambient and Indoor Atmospheres as Determined by Transmission Electron Microscopy Direct Transfer (TEM)" (ASTM Z7077Z) is an adaptation of the International Standard

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ASTM METHODS. EPA Science Inventory. ASTM is a not for profit organization that provides a forum for producers, users, ultimate consumers, and those having a general interest (representatives of government and academia) to meet on common ground and write standards for materials, products, systems, and services. From ASTM Validates Air Pollution Test Methods

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The effect of hard water scale buildup and water treatment on residential water heater performance. SciTech Connect. Talbert, S.G.; Stickford, G.H.; Newman, D.C. Conventional gas and electric storage type residential water heaters were operated at four different U.S. cities under accelerated test conditions to measure the effect of scale buildup on efficiency and to assess the benefits and

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EPA/600/R 05/144bF October 2006 Air Quality Criteria for Lead Volume II National Center for Environmental Assessment RTF Division Office of Research and Development U.S. Environmental Protection Agency Research Triangle Park, NC

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At equilibrium, the organic phase contains 2.3 mol/L of water, and the aqueous phase contains 4.5 X 10 8 mol/L of octano!. Moreover, Kow is often found to be a function of solute concentration. The chemical in question is added to a mixture of octanol and water whose volume ratio is adjusted according to the expected value ofKow .

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Standard water absorption will be efficient for compounds with good water solubility (i.e. hydrophilic ones, Figure 1). In the case of compounds with medium to weak solubility in water, adsorption is much more effective for the separation of the VOCs from the waste gases (Figure 2). There is a need to add an additional process stage, where the

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