porous membrane
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Membrane emulsification — (ME) is a relatively novel technique for producing all types of single and multiple emulsions (o/w, w/o, w/w, w/o/w, o/w/o, m/w, s/o/w), e.g. for DDS (drug delivery system), solid micro carriers for encapsulation of drug or nutrient, solder… … Wikipedia
Membrane potential — Differences in concentration of ions on opposite sides of a cellular membrane lead to a voltage called the membrane potential. Many ions have a concentration gradient across the membrane, including potassium (K+), which is at a high inside and a… … Wikipedia
Membrane technology — The membrane technology covers all process engineering measures for the transport of substances between two fractions with the help of permeable membranes. That means in general mechanical separation process for separation of gaseous or liquid… … Wikipedia
membrane filter technique — The use of a thin porous filter made from cellulose acetate or some other polymer to collect microorganisms from water, air, and food … Dictionary of microbiology
Ceramic membrane — Ceramic membranes are a type of artificial membranes made from inorganic metarials (such as alumina, titania, zirconia oxides or some glassy materials). They are used in membrane operations. By contrast with polymeric membranes they can used in… … Wikipedia
Proton exchange membrane fuel cell — Diagram of a PEM fuel cell Proton exchange membrane fuel cells, also known as polymer electrolyte membrane (PEM) fuel cells (PEMFC), are a type of fuel cell being developed for transport applications as well as for stationary fuel cell… … Wikipedia
Thin film composite membrane — Thin film composite membranes (TFC or TFM) are semipermeable membranes manufactured principally for use in water purification or desalination systems. They also have use in chemical applications such as batteries and fuel cells.Essentially, a TFC … Wikipedia
Nanotube membrane — Not to be confused with membrane nanotube. Part of a series of articles on N … Wikipedia
separation and purification — ▪ chemistry Introduction in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… … Universalium
Pervaporation — is a method for the separation of mixtures of liquids by partial vaporization through a non porous or porous membrane.TheoryThe name of this membrane based process is derived from the two basic steps of the process, firstly the permeation through … Wikipedia
dialysis — /duy al euh sis/, n., pl. dialyses / seez /. 1. Physical Chem. the separation of crystalloids from colloids in a solution by diffusion through a membrane. 2. Biochem. the separation of large molecules, as proteins, from small molecules and ions… … Universalium
