Artificial membrane


Artificial membrane

An artificial membrane, also called a synthetic membrane, is a membrane prepared for separation tasks in laboratory and industry. Its active part, which permits selective transport of material, usually consists of polymers or ceramics, seldom glass or metals. A membrane may contain auxiliary parts for mechanical support, drainage, patch etc.

The driving force of the material transport is given by concentration, pressure, electrical or chemical gradient across the membrane. Membranes can be prepared in the form of flat sheets, tubes, capillaries and hollow fibres. Membranes are built in membrane systems like plate and frame, spiral-wound module, hollow fibre module, tube-in-shell module. Some of the most common artificial membranes are polymeric membranes. Under some conditions ceramic membranes can be utilized with advantage.

Such membranes are employed in a wide range of membrane operations, such as microfiltration, ultrafiltration, reverse osmosis, pervaporation, gas separation, dialysis or chromatography. The applications depend on the type of functionality incorporated in the membrane, which can be based on size-exclusion, chemical affinity or electrostatics.

Typical applications in which membranes have been used are water purification, removal of microorganisms in dairy products, water desalination, dehydrogenation of natural gas, hemodialysis or as components of fuel cells.

ee also

*Membrane
*Semipermeable membrane
*Membrane electrode assembly


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Membrane operation — or membrane process is considered like a unit operation in chemical engineering. In chemistry membrane operations utilize artificial membranes to separate mixtures. According to driving force of the operation it is possible to distinguish:… …   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 (selective barrier) — Schematic of size based membrane exclusion A membrane is a layer of material which serves as a selective barrier between two phases and remains impermeable to specific particles, molecules, or substances when exposed to the action of a driving… …   Wikipedia

  • Membrane — A Membrane may refer to: In biology Biological membrane Cell membrane, a biological type of Membrane (selective barrier) Inner membrane Outer membrane (disambiguation) The two fetal membranes amnion chorion Basement membrane Mucous membrane… …   Wikipedia

  • Artificial kidney — is often a synonym for hemodialysis, but may also, more generally, refer to renal replacement therapies (with exclusion of renal transplantation) that are in use and/or in development. This article deals with bioengineered kidneys/bioartificial… …   Wikipedia

  • Artificial T cell receptor — Artificial T cell receptors (also known as chimeric T cell receptors) are engineered molecules, which when expressed by T cells, redirect the T cells to kill a target cell with a specificity dictated by the artificial receptor. [cite journal| url …   Wikipedia

  • Artificial neural membrane — (ANM) refers to a new class of functional structure developed through research adaptive and evolutionary neural networks and programmable materials. The greatest interest in ANM structures surround their potential as open architecture… …   Wikipedia

  • Artificial respiration — Intervention ICD 9 CM 93.93 MeSH …   Wikipedia

  • Membrane oxygenator — A membrane oxygenator is a device used to add oxygen to, and remove carbon dioxide from the blood. It can be used in two principal modes: to imitate the function of the lungs in cardiopulmonary bypass (CPB), and to oxygenate blood in longer term… …   Wikipedia

  • Membrane reactor — A membrane reactor is a piece of chemical equipment that combines a catalyst filled reaction chamber with a membrane to add reactants or remove products of the reaction. Chemical reactors making use of membranes are usually referred to as… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.