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Membrane technology information


Membrane technology encompasses the scientific processes used in the construction and application of membranes. Membranes are used to facilitate the transport or rejection of substances between mediums, and the mechanical separation of gas and liquid streams. In the simplest case, filtration is achieved when the pores of the membrane are smaller than the diameter of the undesired substance, such as a harmful microorganism. Membrane technology is commonly used in industries such as water treatment, chemical and metal processing, pharmaceuticals, biotechnology, the food industry, as well as the removal of environmental pollutants.

After membrane construction, there is a need to characterize the prepared membrane to know more about its parameters, like pore size, function group, material properties, etc., which are difficult to determine in advance. In this process, instruments such as the Scanning Electron Microscope, the Transmission electron Microscope, the Fourier Transform Infrared Spectroscopy, X-ray Diffraction, and Liquid–Liquid Displacement Porosimetry are utilized.

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Membrane technology

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Membrane technology encompasses the scientific processes used in the construction and application of membranes. Membranes are used to facilitate the transport...

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Membrane

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particles. Membranes can be generally classified into synthetic membranes and biological membranes. Biological membranes include cell membranes (outer coverings...

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Synthetic membrane

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An artificial membrane, or synthetic membrane, is a synthetically created membrane which is usually intended for separation purposes in laboratory or in...

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Semipermeable membrane

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Semipermeable membrane is a type of biological or synthetic, polymeric membrane that allows certain molecules or ions to pass through it by osmosis. The...

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Anaerobic membrane bioreactor

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Anaerobic membrane bioreactor or AnMBR is the name of a technology utilized in wastewater treatment. It is a technology in membrane filtration for biomass...

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Membrane bioreactor

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sludge process. These technologies are now widely used for municipal and industrial wastewater treatment. The two basic membrane bioreactor configurations...

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Membrane gas separation

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by synthetic membranes made from polymers such as polyamide or cellulose acetate, or from ceramic materials. While polymeric membranes are economical...

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Oxygen plant

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from atmospheric air with the help of membrane technology. The basis of gas media separation with the use of membrane systems is the difference in velocity...

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Reverse osmosis

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other membrane technology applications. RO differs from filtration in that the mechanism of fluid flow is reversed, as the solvent crosses membrane, leaving...

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Membrane fouling

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nanofiltration so that the membrane's performance is degraded. It is a major obstacle to the widespread use of this technology. Membrane fouling can cause severe...

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Nitrogen generator

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operation of membrane systems is based on the principle of differential velocity with which various gas mixture components permeate membrane substance....

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Extracorporeal membrane oxygenation

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Extracorporeal membrane oxygenation (ECMO), is a form of extracorporeal life support, providing prolonged cardiac and respiratory support to persons whose...

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Oxygen concentrator

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upstream side, and nitrogen at the downstream side. As of 2016, membrane technology was reported as capable of producing 10 to 25 tonnes of 25 to 40%...

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Hollow fiber membrane

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Hollow fiber membranes (HFMs) are a class of artificial membranes containing a semi-permeable barrier in the form of a hollow fiber. Originally developed...

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Ultrafiltration

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variety of membrane filtration in which forces such as pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended...

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Concentration polarization

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species.[vague] In membrane science and technology, concentration polarization refers to the emergence of concentration gradients at a membrane/solution interface...

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Forward osmosis

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osmotic process that, like reverse osmosis (RO), uses a semi-permeable membrane to effect separation of water from dissolved solutes. The driving force...

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Membrane reactor

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A membrane reactor is a physical device that combines a chemical conversion process with a membrane separation process to add reactants or remove products...

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Osmosis

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movement or diffusion of solvent molecules through a selectively-permeable membrane from a region of high water potential (region of lower solute concentration)...

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Membrane emulsification

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by Kobayashi et. al. Membrane Emulsification video by Richard G. Holdich ITM-CNR, Calabria, Italy Micropre Technologies, UK SPG Technology Co, Japan...

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Barrer

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Barrer is a non-SI unit of permeability of gases used in the membrane technology and contact lens industry. It is named after Richard Barrer. 1   b a...

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Nanofiltration

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nanotechnology, as with all membrane filter technology, is the cost and maintenance of the membranes used. Nanofiltration membranes are an expensive part of...

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Reverse osmosis plant

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Big Membrane Order for Chinese Seawater Desalination Plant - News". Archived from the original on 16 July 2011. Retrieved 11 May 2010. "Technology Review:...

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Membrane electrode assembly

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A membrane electrode assembly (MEA) is an assembled stack of proton-exchange membranes (PEM) or alkali anion exchange membrane (AAEM), catalyst and flat...

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Perstraction

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Perstraction is a membrane extraction process, where two liquid phases are contacted across a membrane. The desired species in the feed (solute), selectively...

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Kidney dialysis

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side of a semi-permeable membrane, and a dialysate, or special dialysis fluid, flows by the opposite side. A semipermeable membrane is a thin layer of material...

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