MASS TRANSFER
MASS TRANSFER: Mass transfer is the transfer of mass from high concentration to low concentration. It includes all physical processes that involve molecular and convective transport of atoms and molecules within physical systems. Mass transfer includes both fluid flow and separation unit operations. Mass transfer is the net movement of mass from one location, usually meaning a stream, phase, fracation or component, to another. Mass transfer occurs in many processes, such as absorption, evaporation, adsorption and drying. Mass transport occurs when a particle or component of a mixture moves to another spot because of a variance in concentration . C ommon examples of mass transfer processes are the evaporation of water from a pond to the atmosphere. The driving force for mass transfer is a difference in concentration. The random motion of molecules causes a net transfer of mass from an area of high concentration to an area of low concentration. The amount of mass transfer can be q...
