Mass transfer by Animesh Borgohain.pptx

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  Presented byAnimeshBorgohainPG 2 nd SemRoll No:-ME-PG 18/14ASTU Roll No:-   180620002002Mechanical Engineering, Assam Engineering College Presentationon An Introduction to Mass Transfer  Presentation Flowchart  Introduction  Mass Transfer   Mass Transfer Operations  Mass Transfer Operations in Industrial Processes  Conclusion  References 2  Introduction  A number of processes requires separation of a substance into its constituents either physically or chemically.  Examples of physical separation are filtration of solid from a suspension of liquid, classification of a solid into fractions of different particle size by screening, or separation of particles of a ground solid according to their density.  Examples of chemical separation includes extraction of metals from ores, burning of wax to generate water and carbon dioxide. 3  What is Mass Transfer?   Net Movement of component from one location to another due to difference in concentration or  partial pressure.  Mass transfer operations depend on molecules diffusing from one distinct phase to another and are  based upon differences in the physical-chemical properties of the molecules, such as vapour  pressure , solubility, diffusivity, concentration, activity etc.  Some common examples of mass transfer includes:-a) Lump of sugar added to a cup of tea. b) Drying of clothes under the sun.c) Fragrance of incense sticks. 4
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