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Capacitive deionization (CDI) is a technology to deionize water by applying an electrical potential difference over two electrodes, which are often made of porous carbon. [2] In other words, CDI is an electro-sorption method using a combination of a sorption media and an electrical field to separate ions and charged particles. [ 3 ]
Completely de-gassed ultrapure water has a conductivity of 1.2 × 10 −4 S/m, whereas on equilibration to the atmosphere it is 7.5 × 10 −5 S/m due to dissolved CO 2 in it. [10] The highest grades of ultrapure water should not be stored in glass or plastic containers because these container materials leach (release) contaminants at very low ...
A Brazilian Swap is a type of swap where the floating rate is calculated using an average rate and has only one payment, which occurs at maturity. [1]The average rate used for the Floating Leg is the Average One-Day Interbank Deposit (aka CDI rate, or overnight DI rate) which is an annual rate and is calculated daily by the Central of Custody and Financial Settlement of Securities (CETIP).
Temperature dependence of the free molar (Gibbs) enthalpy and equilibrium constant of the water-gas shift reaction. With increasing temperature, the reaction rate increases, but hydrogen production becomes less favorable thermodynamically [ 5 ] since the water gas shift reaction is moderately exothermic ; this shift in chemical equilibrium can ...
The Safe Drinking Water Act (SDWA) is the primary federal law in the United States intended to ensure safe drinking water for the public. [3] Pursuant to the act, the Environmental Protection Agency (EPA) is required to set standards for drinking water quality and oversee all states, localities, and water suppliers that implement the standards.
Capacitor discharge ignition (CDI) or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, gas turbine-powered aircraft, and some cars.
The Águas Livres Aqueduct (Portuguese: Aqueduto das Águas Livres, pronounced [ɐkɨˈðutu ðɐz ˈaɣwɐʒ ˈlivɾɨʃ], "Aqueduct of the Free Waters") is a historic aqueduct in the city of Lisbon, Portugal. It is one of the most remarkable examples of 18th-century Portuguese engineering. The main course of the aqueduct covers 18 km, but the ...