Topic
Aluminium hydroxide
About: Aluminium hydroxide is a research topic. Over the lifetime, 2043 publications have been published within this topic receiving 22032 citations. The topic is also known as: Al(OH)3 & Amphojel.
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Patent•
22 Feb 1986
TL;DR: In this article, flame resistant, thermoplastic polymer mixtures are described which contain two ethylene vinyl acetate copolymers having different vinyl acetates contents, an ethylene-propylene copolymer and an acrylate copolymmer.
Abstract: Flame-resistant, thermoplastic polymer mixtures are described which contain two ethylene vinyl acetate copolymers having different vinyl acetate contents, an ethylene-propylene copolymer and an acrylate copolymer. The flame resistance of the mixtures is effected by aluminium hydroxide as filler, which has a specific surface area of less than 10 m /g.
6 citations
TL;DR: In this paper, pure aluminum (hydr)oxide (AlOOH) and AlOOH-amended sodalite exhibited good performance in column fluoride removal studies in terms of service time (time until breakthrough), energy require, and service time.
Abstract: Pure aluminum (hydr)oxide (AlOOH) and AlOOH-amended sodalite exhibited good performance in column fluoride removal studies in terms of service time (time until breakthrough), energy require...
6 citations
TL;DR: In this paper, the use of waste water stream, containing considerable amounts of aluminium chloride, for the manufacture of mineral-carbon sorbents has been investigated and the effect of the amount of carbon matter on the properties of the materials obtained has been evaluated.
Abstract: The present work is an attempt to use the waste water stream, containing considerable amounts of aluminium chloride, for the manufacture of mineral-carbon sorbents. The use of the waste water has given a possibility of obtaining a suitable mineral matrix of aluminium hydroxide for the sorbents. Atactic poly(propylene) (APP) have been used as the necessary carbon raw material. The modification of aluminium hydroxide was attained by preliminary mixing with the organic component, followed by carbonisation. Optimum conditions for obtaining Al(OH) 3 have been determined and the effect of the amount of carbon matter on the properties of the materials obtained has been evaluated. The studies have enabled to trace the changes in the structure and properties of the sorbents obtained.
6 citations
Patent•
14 Nov 2001
TL;DR: A method for removing sulfur dioxide from smoke uses aluminium hydroxide as catalyst, and includes the following steps: at 100-130 deg.C making the smoke pass through the urea, in the presence of aluminium hyroxide making sulfur dioxide in the smoke and urea produce reaction to form ammonium sulfate so as to remove it from smoke.
Abstract: A method for removing sulfur dioxide from smoke uses aluminium hydroxide as catalyst, and includes the following steps: at 100-130 deg.C making the smoke pass through the urea, in the presence of aluminium hydroxide making sulfur dioxide in the smoke and urea produce reaction to form ammonium sulfate so as to remove it from smoke. Said invention has no secondary pollution, removing rate of sulfurdioxide can be up to above 97%, and its obtained product is a compound fertilizer containing high nitrogen content and several trace elements.
6 citations
01 Jan 2007
TL;DR: In this article, the potential of Al-substituted goethites in adsorbing arsenic compared with other Fe and Al (hydr)oxides was investigated, and the results showed promising results for their potential use as an adsorbent to remove arsenic from water.
Abstract: The geochemical fates of iron and arsenic are so closely correlated that methods of arsenic removal from water are in general based on the high adsorptive affinity of this metalloid with iron (hydr)oxides. Under anoxic conditions, however, reductive dissolution of iron (hydr)oxides can take place, and arsenic may be released into the surrounding environment. The purpose of this study was to investigate the potential of Al-substituted goethites in adsorbing arsenic compared with other Fe and Al (hydr)oxides. Hematite (Hm), goethite (Gt), 2-line ferrihydrite (Fh), gibbsite (Gb), aluminium hydroxide, and three Al-substituted goethites (AlGt) were synthesized and characterized by X-ray powder diffraction (XRD), particle size analysis, and diffuse reflectance (DR) spectroscopy. Adsorption isotherms were obtained after shaking the samples with increasing concentrations of arsenate (40 - 1600 mg L -1 ) in a 10 mmol L -1 CaCl2 solution for 24 hours. The adsorption envelope was measured at pH ranging from 3 to 9. The As(V) adsorption maxima decreased in the following order: Al(OH)3 > Fh > AlGt-15 > AlGt-25 > AlGt-35 > Hm > Gb > Gt. No relationship was observed between particle diameter and maximum adsorption, suggesting that re-aggregation could have taken place, or possibly that imperfections on the surface of the particles increased their surface net charge, resulting in high adsorption density. The behaviour of all samples was strongly dependent on pH, and the maximum adsorption was achieved in slightly acidic conditions. In general, Al-substituted goethites showed promising results for their potential use as an adsorbent to remove arsenic from water.
6 citations