Membrane
A membrane is a thin, typically planar structure or material that separates two environments. Because it sits between environments or phases and has a finite volume, it can be referred to as an interphase rather than an interface. Membranes selectively control mass transport between the phases or environments. Biological membranes include: plasma membrane and intracellular membranesmucous membrane Artificial membranes are used in: Reverse osmosisUltrafiltrationMicrofiltrationPervaporationDialysisElectrodialysisEmulsion liquid membranesMembrane-based solvent extractionMembrane reactorsGas permeationsupported liquid membranes
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