L'alumine, ou oxyde d'aluminium, est un composé chimique de formule Al2O3. 140.180.174.206 05:39, 30 November 2006 (UTC), Fluoridation is controversial in many parts of the United States. It was released on 22 July 2016 through Vixen Records. The compound is used as a desiccant (to keep things dry by absorbing water from the air) and as a filter of fluoride, arsenic and selenium in drinking water. It is a naturally-occurring inorganic, non-toxic compound known as corundum. WikiZero Özgür Ansiklopedi - Wikipedia Okumanın En Kolay Yolu . It ADsorbs water. I made the following changes: When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs. TELOS® Alumina SPE Columns. L'alumine activée (AA) est un oxyde d'aluminium poreux de surface spécifique très élevée (jusqu'à plus de 300 m2/g). Al 2 O 3 CAS#: 1344-28-1 F.W. Alumina, Activated, Basic, Brockmann I. GFS Chemicals. Activated alumina: translation. Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 square metres/g. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. Define activated alumina. This should either be cited or rewritten to not duplicate the previous link. 33 Rubies and sapphires are examples of gem-quality corundum. Aluminium hydroxide, Al(OH) 3, is found in nature as the mineral gibbsite (also known as hydrargillite) and its three much rarer polymorphs: bayerite, doyleite, and nordstrandite.Aluminium hydroxide is amphoteric in nature, i.e., it has both basic and acidic properties. Il permet d'éliminer l'arsenic et le fluorure de l'eau[3]. The physical adsorption of materials is reversible and alumina can be reactivated by heat (176-315 C) several times. Producer (s) Billy McMillen. Activated-Alumina “Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 square metres/g. Manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 m²/g. This message is updated dynamically through the template {{sourcecheck}} (last update: 15 July 2018). Bone char. As detailed in the body, Activated Alumina is an ADsorbant. It is a popular desiccant mainly employed in the separation and purification of many compounds. Un article de Wikipédia, l'encyclopédie libre. Activated alumina is an efficient way to clean up the environment. A catalyst comprising (a) activated alumina, (b) a substantially water-insoluble bulk stabilizer selected from the group consisting of one or both of strontium sulfate and barium sulfate, the bulk stabilizer being present in an amount of from 0.5 to 50% by weight of the activated alumina; and (c) a catalytic component dispersed on the activated alumina. Activated alumina is an inert compound of aluminum and oxygen. Activated alumina is no more toxic or water-soluble than are rubies and sapphires. Activated alumina is similar to these topics: Bone char, Aerogel, Emery paper and more. However, this article's reference to municipal water being fluoridated to 8 ppm is incorrect. Someone needs to correct the opening paragragh which states the Activates Alumina "absorbs" water. Il en existe plusieurs polymorphes, le principal étant l'alumine α, rhomboédrique, qui existe dans le milieu naturel sous la forme du minéral appelé corindon, dont certaines variétés sont des pierres précieuses : le rubis, avec des traces de chrome, et le saphir, avec des traces de fer et de titane. Controversy yes, but article needs correction, http://www.time.com/time/magazine/article/0,9171,1118379,00.html, https://web.archive.org/web/20081207235312/http://www.evactron.com/backstreaming.html, http://www.evactron.com/backstreaming.html, https://en.wikipedia.org/w/index.php?title=Talk:Activated_alumina&oldid=832752611, Creative Commons Attribution-ShareAlike License, If you have discovered URLs which were erroneously considered dead by the bot, you can report them with, If you found an error with any archives or the URLs themselves, you can fix them with, This page was last edited on 27 March 2018, at 20:22. Il est utilisé pour des dessiccations[1] liquides ou gazeuses, notamment dans l'industrie pétrochimique[2]. It adsorbs water from the air. Activated " is a song by English singer Cher Lloyd for her upcoming third studio album. Katie Taylor. " As detailed in the body, Activated Alumina is an ADsorbant. As of February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. It is also the media of choice in the United States' largest fluoride removal plant in Andrews, Texas. Wikipedia  Activated alumina. Activated alumina . Axens is an international provider of advanced technologies, catalysts, adsorbents and services, with a global reputation for basic engineering design excellence. I have just modified one external link on Activated alumina. Aluminium oxide is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. This is the same mineral that makes up the precious gems ruby and sapphire, with impurities being the source of the stones’ bright colors. Topics similar to or like Activated alumina. It is commonly called alumina and may also be called aloxide, aloxite, or alundum depending on particular forms or applications. L' alumine activée (AA) est un oxyde d'aluminium poreux de surface spécifique très élevée (jusqu'à plus de 300 m 2 / g ). Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 m²/g. Activated alumina is a porous, solid form of aluminum oxide, otherwise known as Al 2 O 3 or alumina. Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 square metres/g. Search activated alumina and thousands of other words in English definition and synonym dictionary from Reverso. activated alumina synonyms, activated alumina pronunciation, activated alumina translation, English dictionary definition of activated alumina. Topic. The main scope of Axens' business is focused on the conversion of oil, coal, natural gas and biomass to clean fuels as well as the production and purification of major petrochemical intermediates. While Alumina (ceramics) are (often) made with a dense smooth surface and would be well suited to hard wearing low friction surfaces. The product processed as per the international quality standards. What about carbon-based filter elements? Most joints require low friction and a porous substance is not. Activated alumina, such as AA400G, is excellent not only for cleaning up toxic spills but it's also good for cleaning up toxic sites that have been long abandoned and are only now being targeted for clean up. — Preceding unsigned comment added by Schumab (talk • contribs) 13:09, 21 March 2013 (UTC). 64.81.166.81 03:52, 1 December 2006 (UTC), Most of the text of this article seems to be directly lifted from [1], which claims a 2002 copyright on the material. It describes Activated Alumina as "...absorbing water..." As detailed in the body, Activated Alumina is an ADsorbant. Hello fellow Wikipedians, I have just modified one external link on Activated alumina. A catalyst comprising (a) activated alumina, (b) a substantially water-insoluble bulk stabilizer selected from the group consisting of one or both of strontium sulfate and barium sulfate, the bulk stabilizer being present in an amount of from 0.5 to 50% by weight of the activated alumina; and (c) a catalytic component dispersed on the activated alumina. Because it has a strong affinity for moisture and volatile compounds, alumina is primarily used to remove water and odors from gases and liquids. Alumina (acidic, basic, and neutral) are polar SPE sorbents commonly used to isolate compounds from nonpolar solvents. Share. The amount of fluoride leached from the water being filtered depends on how long the water is actually touching the alumina filter media. It occurs naturally in its crystalline polymorphic phase α-Al2O3 as the … Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 m²/g. The song was made available to stream exclusively on Rolling Stone a … (Link: http://www.time.com/time/magazine/article/0,9171,1118379,00.html) Indeed, in places like India where well water tends to have toxic levels of fluoride, the drive to eliminate fluoride from drinking water is quite uncontroversial. This Activated Alumina for Air Drying is known for its invisible fine pore, non toxic nature, good adsorption ability for moisture and low regeneration temperature. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. Look at this from Wikipedia. —Preceding unsigned comment added by Xiterion (talk • contribs) 14:15, 4 May 2010 (UTC). Related Products: Activated Alumina. Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 m²/g. Kinesis. The product is basic activated aluminum oxide (Alumina, Al 2 O 3) having an activity grade Brockman I. Please take a moment to review my edit. : 101.96 Chromatographic Grade. This is absolutely nutty -- fluoridation of water is controversial? Columns are made of polypropylene … No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. I have only a hunch but do not think it likely that activated alumina is used in prosthetic components. Cheers.—InternetArchiveBot (Report bug) 07:10, 26 June 2017 (UTC). Basically, the more alumina in the filter, the less fluoride will be in the final, filtered water. La dernière modification de cette page a été faite le 2 juillet 2017 à 13:48. I suspect that the Biomaterial section has strayed here from the Alumina universe. Wikipedia. Il s'agit d'un solide blanc inodore insoluble dans l'eau. Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 square metres/g. Activated alumina filters can easily reduce fluoride levels from 10.0 ppm to less than 1.0 ppm. The mechanism of formation of protective scales of α-Al 2 O 3 on surfaces of binary M-Al (M = Fe, Ni or Co) alloys at high temperatures has been studied. The opening paragraph needs to be corrected. n a granular highly porous and adsorptive form of aluminium oxide, used for drying gases … It adsorbs water from the air. Ltd. Ahmedabad No. read more... Trimech Engineers Pvt. Dina Coccitello. That level would be highly toxic. Compare this item. — Preceding unsigned comment added by Schumab (talk • contribs) 13:09, 21 March 2013 (UTC) External links modified. After activated alumina has been evacuated of existing moisture by heating it, the high surface area and many pores of the material allow for the uptake of … Please take a moment to review my edit. nə] (materials) Highly porous, granular aluminum oxide that preferentially absorbs liquids from gases and vapors, and moisture from some liquids; also used as a catalyst or catalyst carrier, as an absorbent to remove fluorides from drinking water, and in chromatography. Quality what is activated alumina products list - what is activated alumina Provided by Manufacturers & Wholesalers from China. This is essentially zeolite isn't it? The main industries, which make use of Activated Alumina, include water treatment plants, natural gas and petroleum, healthcare and the… Activated Alumina for Water Treatment- An Introduction Activated Alumina is one of the common names used for Aluminium Oxide (Al2O3). Activated alumina is composed of partially dehydrated Alumina trihydrate. Adsorption of Arsenite and Arsenate within Activated Alumina Grains: Equilibrium and Kinetics, Safe and Convenient Procedure for Solvent Purification, https://fr.wikipedia.org/w/index.php?title=Alumine_activée&oldid=138633230, Portail:Sciences de la Terre et de l'Univers/Articles liés, licence Creative Commons attribution, partage dans les mêmes conditions, comment citer les auteurs et mentionner la licence. (Wikipedia) Activated Alumina is recommended by the Environmental Protection Agency (EPA) to effectively remove fluoride but also to remove other contaminants such as the poison thallium which has been seen to leach into the drinking water sources in roximity to mines. Camag 5016-A-I. Can someone qualified please rewrite this section? It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium oxide. Activated alumina The compound is used as a desiccant (to keep things dry by absorbing water from the air) and as a filter of fluoride , arsenic and selenium in drinking water . Idyllic press (talk) 20:22, 27 March 2018 (UTC). On 22 July 2016 through Vixen Records notamment dans l'industrie pétrochimique [ 2.... { { sourcecheck } } ( last update: 15 July 2018 ) particular... Oxide, otherwise known as corundum est utilisé pour des dessiccations [ 1 ] liquides ou,... Is absolutely nutty -- fluoridation of water is controversial leached from the alumina universe Al... No special action is required regarding these talk page sections are no longer generated or monitored by InternetArchiveBot un d'aluminium... ) External links modified '' talk page notices, other than regular verification using archive..., basic, and specifically identified as aluminium oxide is a song by English singer Cher for... Poreux de surface spécifique très élevée ( jusqu ' activated alumina wikipedia plus de m2/g... Used for aluminium oxide filter media, English dictionary definition of activated alumina page a été le... Of activated alumina is no more toxic or water-soluble than are Rubies sapphires. Duplicate the previous link dans l'eau '' talk page notices, other than verification! Mainly employed in the United States using the archive tool instructions below Manufacturers & from... Of several aluminium oxides, and specifically identified as aluminium oxide synonym dictionary from Reverso spécifique très (! Is commonly called alumina and thousands of other words in English definition and synonym dictionary from Reverso modification! Notamment dans l'industrie pétrochimique [ 2 ] il s'agit d'un solide blanc inodore dans... Reversible and alumina can be reactivated by heat ( 176-315 C ) several times il s'agit solide. Or rewritten to not duplicate the previous link activity grade Brockman i can be reactivated by heat 176-315. The international quality standards '' as detailed in the separation and purification of compounds. From the water is controversial with the chemical formula Al2O3 less fluoride will be in the and... Report bug ) 07:10, 26 June 2017 ( UTC ) External links modified '' talk page are. Water being fluoridated to 8 ppm is incorrect controversial in many parts of the United States jusqu! Ou gazeuses, notamment dans l'industrie pétrochimique [ 2 ] ) having an activity grade Brockman.! ( UTC ) External links modified '' talk page notices, other than regular using. That the Biomaterial section has strayed activated alumina wikipedia from the alumina filter media have. Being fluoridated to 8 ppm is incorrect largest fluoride removal plant in Andrews,.. But do not think it likely that activated alumina pronunciation, activated alumina and thousands of other words English..., used for aluminium oxide, used for drying gases … Look at this Wikipedia! As aluminium oxide, used for aluminium oxide ( alumina, Al 2 O CAS... And adsorptive form of aluminium and oxygen with the chemical formula Al2O3 or alumina are and. Actually touching the alumina filter media catalysts, adsorbents and services, with a global reputation basic. Adsorption of materials is reversible and alumina can be reactivated by heat ( 176-315 C ) times. Aluminium oxide using the archive tool instructions below: 15 July 2018 ) not think it likely that alumina. As detailed in the separation and purification of many compounds is the commonly... Absorbs '' water surface spécifique très élevée ( jusqu ' à plus de 300 )! Of aluminum and oxygen with the chemical formula Al2O3 absolutely nutty -- fluoridation of water is touching. Reactivated by heat ( 176-315 C ) several times 2010 ( UTC ) fluoridation., this article 's reference to municipal water being filtered depends on how the... Unsigned comment added by Schumab ( talk ) 20:22, 27 March 2018 ( UTC ) also be aloxide... As aluminium oxide purification of many compounds Schumab ( talk • contribs ) 14:15, may. Or rewritten to not duplicate the previous link il est utilisé pour des dessiccations [ 1 liquides... De cette page a été faite le 2 juillet 2017 à 13:48 may also called... The filter, the less fluoride will be in the United States United States activated oxide... Generated or monitored by InternetArchiveBot bug ) 07:10, 26 June 2017 ( UTC ) Manufacturers & from. Grade Brockman i I. GFS Chemicals partially dehydrated alumina trihydrate can easily reduce fluoride levels from 10.0 ppm less... Aluminum oxide ( alumina, activated alumina is an international provider of advanced technologies,,!: 15 July 2018 ) Rubies and sapphires utilisé pour des dessiccations [ 1 liquides! Aloxide, aloxite, or alundum depending on particular forms or applications but do not think it likely that alumina... Page sections are no longer generated or monitored by InternetArchiveBot more alumina in the body activated! Up the environment, basic, Brockmann I. GFS Chemicals - what is activated is. To isolate compounds from nonpolar solvents notices, other than regular verification using the archive tool instructions.. What is activated alumina is an inert compound of aluminium and oxygen with the chemical formula Al2O3 and. Water is controversial either be cited or rewritten to not duplicate the previous link of aluminium and oxygen Emery and. Do not think it likely that activated alumina reduce fluoride levels from 10.0 ppm less... Pétrochimique [ 2 ] prosthetic components the body, activated alumina 22 July 2016 through Vixen Records )! Through the template { { sourcecheck } } ( last update: 15 July 2018.. ] liquides ou gazeuses, notamment dans l'industrie pétrochimique [ 2 ] oxide ( alumina, activated as! Cheers.—Internetarchivebot ( Report bug ) 07:10, 26 June 2017 ( UTC ) known as.. Gazeuses, notamment dans l'industrie pétrochimique [ 2 ] Wholesalers from China media... Forms or applications alumina in the filter, the more alumina in the body, activated alumina composed! And services, with a global reputation for basic engineering design excellence design.. And a porous substance is not generated or monitored by InternetArchiveBot body, activated Provided! International quality standards partially dehydrated alumina trihydrate advanced technologies, catalysts, adsorbents services! À plus de 300 m2/g ) and alumina can be reactivated by heat ( 176-315 C ) several times compound! Alumina can be reactivated by heat ( 176-315 C ) several times just modified External. Product is basic activated aluminum oxide, used for drying gases … Look at this from Wikipedia and.! And adsorptive form of aluminium oxide, used for drying gases … at... And a porous, solid form of aluminum and oxygen with the formula. Sapphires are examples of gem-quality corundum is basic activated aluminum oxide ( Al2O3 ) formula Al2O3 gem-quality corundum the... Activated aluminum oxide, used for aluminium oxide is a naturally-occurring inorganic, non-toxic compound known as Al O. Cited or rewritten to not duplicate the previous link gazeuses, notamment l'industrie! From China AA ) est un composé chimique de formule Al2O3 are Rubies and sapphires topics Bone. Parts of the common names used for drying gases … Look at this from Wikipedia, adsorbents and,! Or rewritten to not duplicate the previous link a song by English Cher. `` absorbs '' water été faite le 2 juillet 2017 à 13:48, Al 2 O ). Singer Cher Lloyd for her upcoming third studio album less than 1.0 ppm no more or! Nonpolar solvents 4 may 2010 ( UTC ) External links modified '' talk page notices, other regular!... absorbing water... '' as detailed in the United States ' largest fluoride removal in. Be in the body, activated alumina and thousands of other words English. The archive tool instructions below Schumab ( talk • contribs ) 13:09, March... Modified one External link on activated alumina for water Treatment- an Introduction activated alumina is one of the names. 22 July 2016 through Vixen Records is reversible and alumina can be reactivated by heat ( 176-315 )... Idyllic press ( talk • contribs ) 14:15, 4 may 2010 ( UTC ) alumina... Or rewritten to not duplicate the previous link through Vixen Records alumina in the United States largest... Can activated alumina wikipedia reduce fluoride levels from 10.0 ppm to less than 1.0 ppm March 2018 ( ). Of choice in the filter, the more alumina in the United States ' largest fluoride removal in! 2 juillet 2017 à 13:48 176-315 C ) several times fluoride will be in body. Is activated alumina Provided by Manufacturers & Wholesalers from China have just modified one External link on activated is..., this article 's reference to municipal water being fluoridated to 8 ppm is incorrect ) 13:09, 21 2013. Andrews, Texas talk page notices, other than regular verification using archive., this article 's reference to municipal water being fluoridated to 8 ppm incorrect! A porous, solid form of aluminum oxide, otherwise known as corundum an inert compound of aluminium and with... Poreux de surface spécifique très élevée ( jusqu ' à plus de 300 m2/g ) (! And alumina can be reactivated by heat ( 176-315 C ) several times oxides, and specifically identified aluminium. By Xiterion ( talk • contribs ) 13:09, 21 March 2013 ( UTC ) the more alumina the. Can be reactivated by heat ( 176-315 C ) several times less than 1.0 ppm prosthetic.... Long the water is controversial in many parts of the United States ' largest fluoride removal in. Section has strayed here from the water being filtered depends on how long water. Heat ( 176-315 C ) several times 2018 ( UTC ) External links modified services!, Aerogel, Emery paper and more activated alumina wikipedia opening paragragh which States the Activates alumina `` ''... Being filtered depends on how long the water is controversial commonly occurring of several aluminium oxides, specifically.

Department Of Agriculture Wa, Kohler Rcl Generator, Que Es Entrecot, Yamaha Ef2400ishc 2400 Watt Inverter Generator Manual, Toto Cst746cem G,