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Mass transfer information


Mass transfer is the net movement of mass from one location (usually meaning stream, phase, fraction, or component) to another. Mass transfer occurs in many processes, such as absorption, evaporation, drying, precipitation, membrane filtration, and distillation. Mass transfer is used by different scientific disciplines for different processes and mechanisms. The phrase is commonly used in engineering for physical processes that involve diffusive and convective transport of chemical species within physical systems.

Some common examples of mass transfer processes are the evaporation of water from a pond to the atmosphere, the purification of blood in the kidneys and liver, and the distillation of alcohol. In industrial processes, mass transfer operations include separation of chemical components in distillation columns, absorbers such as scrubbers or stripping, adsorbers such as activated carbon beds, and liquid-liquid extraction. Mass transfer is often coupled to additional transport processes, for instance in industrial cooling towers. These towers couple heat transfer to mass transfer by allowing hot water to flow in contact with air. The water is cooled by expelling some of its content in the form of water vapour.

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Mass transfer

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Mass transfer is the net movement of mass from one location (usually meaning stream, phase, fraction, or component) to another. Mass transfer occurs in...

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Mass transfer coefficient

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In engineering, the mass transfer coefficient is a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration...

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Dispersive mass transfer

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mass transfer, in fluid dynamics, is the spreading of mass from highly concentrated areas to less concentrated areas. It is one form of mass transfer...

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Transport phenomena

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others. The fundamental analysis in all three subfields of mass, heat, and momentum transfer are often grounded in the simple principle that the total...

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International Journal of Heat and Mass Transfer

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International Journal of Heat and Mass Transfer is a peer-reviewed scientific journal in the field of heat transfer and mass transfer, published by Elsevier. The...

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Heat transfer

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consider the transfer of mass of differing chemical species (mass transfer in the form of advection), either cold or hot, to achieve heat transfer. While these...

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Tandem mass spectrometry

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"Charge transfer dissociation (CTD) mass spectrometry of peptide cations using kiloelectronvolt helium cations". Journal of the American Society for Mass Spectrometry...

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Heat and Mass Transfer

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Heat and Mass Transfer is a peer-reviewed scientific journal published by Springer. It serves the circulation of new developments in the field of basic...

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Fourier number

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length scale of interest (m) The mass-transfer Fourier number can be applied to the study of certain time-dependent mass diffusion problems. Biot number...

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Binary star

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low-mass or high-mass according to the mass of the donor star. High-mass X-ray binaries contain a young, early-type, high-mass donor star which transfers...

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Tafel equation

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function of potential only. In other words, it assumes that the electrode mass transfer rate is much greater than the reaction rate, and that the reaction is...

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Sherwood number

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the mass transfer Nusselt number) is a dimensionless number used in mass-transfer operation. It represents the ratio of the total mass transfer rate...

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Heat transfer coefficient

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of Momentum, Heat and Mass transfer (5th ed.). John Wiley and Sons. ISBN 978-0470128688. Çengel, Yunus. Heat and Mass Transfer (Second ed.). McGraw-Hill...

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Mass diffusivity

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NJ: Wiley. ISBN 978-1-118-06160-2. Cussler, E. L. (1997). Diffusion: Mass Transfer in Fluid Systems (2nd ed.). New York: Cambridge University Press. ISBN 0-521-45078-0...

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Biot number

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{k_{c}}}  : convective mass transfer coefficient (analogous to the h of the heat transfer problem) D {\displaystyle D}  : mass diffusivity (analogous...

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Journal of Heat and Mass Transfer Research

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The Journal of Heat and Mass Transfer Research is a semiannual peer-reviewed open-access scientific journal published by Semnan University and the editor-in-chief...

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Schmidt number

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to the diffusivity for mass transfer D. It physically relates the relative thickness of the hydrodynamic layer and mass-transfer boundary layer. It is...

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Frontiers in Heat and Mass Transfer

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Frontiers in Heat and Mass Transfer is a peer-reviewed open access scientific journal covering heat transfer and mass transfer. It is published by Tech...

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Star

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radiative heat transfer, since convective heat transfer is inefficient in that zone. In this region the plasma will not be perturbed, and any mass motions will...

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Stanton number

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{h}{Gc_{p}}}={\frac {h}{\rho uc_{p}}}} where h = convection heat transfer coefficient G = mass flow rate of the fluid ρ = density of the fluid cp = specific...

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Chemical engineering

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involve fluid dynamics, heat transfer and mass transfer, which are governed mainly by momentum transfer, energy transfer and transport of chemical species...

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Roche lobe

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Second, with the transfer of mass between the two binary components, angular momentum is transferred as well. While mass transfer from a more massive...

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Mass flow rate

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number or mass transfer coefficient calculation for fixed and fluidized bed systems. In the elementary form of the continuity equation for mass, in hydrodynamics:...

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Leidenfrost effect

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2019). "Decomposition by film boiling heat transfer of glycerol". International Journal of Heat and Mass Transfer. 139: 873–880. doi:10.1016/j.ijheatmasstransfer...

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Mass driver

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Singer, C.E. (1979). Interstellar Propulsion Using a Pellet Stream for Mass Transfer (PDF) (Report). doi:10.2172/5770056. Archived (PDF) from the original...

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Sieving coefficient

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In mass transfer, the sieving coefficient is a measure of equilibration between the concentrations of two mass transfer streams. It is defined as the mean...

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Bejan number

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the Rayleigh number plays in natural convection. In the context of mass transfer. the Bejan number is the dimensionless pressure drop along a channel...

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