Nanostructure material supporting arsenic ion adsorption compound and method to remove arsenic ion using the same
First Claim
1. A nanostructure material supporting an arsenic ion adsorption compound that can adsorb an arsenic ion from an arsenic ion solution of a target element, and that can separate the arsenic ion adsorbed:
- wherein the nanostructure material is selected from the group consisting of a titania nanotube, a zinc oxide nanorod and an alumina nanorod; and
wherein the arsenic on adsorption compound is an ammonium molybdate.
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Abstract
Means for reducing an arsenic ion concentration in the solution to the degree of ultra trace amount are provided. Ammonium molybdate is supported by a nanostructure material by mixing the nanostructure material, which is obtained after the nanostructure material such as an alumina reacts with a surfactant, in the solution containing the ammonium molybdate. The nanostructure material supporting an arsenic ion adsorption compound such as ammonium molybdate can selectively adsorb and remove trace of arsenic ion in the solution by a room temperature treatment without a water conditioning such as pH control. In our removal system of arsenic, extra posttreatments are not needed because special pretreatments are not carried out, and special heating equipments are not used. Accordingly, our removal system of arsenic can be constructed at low cost. Furthermore, it can supply an arsenic-free solution by be constructed at multi stages.
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Citations
39 Claims
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1. A nanostructure material supporting an arsenic ion adsorption compound that can adsorb an arsenic ion from an arsenic ion solution of a target element, and that can separate the arsenic ion adsorbed:
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wherein the nanostructure material is selected from the group consisting of a titania nanotube, a zinc oxide nanorod and an alumina nanorod; and wherein the arsenic on adsorption compound is an ammonium molybdate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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- 12. A mesoporous alumina supporting an arsenic ion adsorption compound that can adsorb an arsenic ion of a target element from an arsenic ion solution, and that can separate the arsenic ion adsorbed, wherein the mesoporous alumina is made using an aluminum nitrate and a surfactant.
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14. A mesoporous alumina supporting an arsenic ion adsorption compound that can adsorb an arsenic ion from an arsenic ion solution of a target element, and that can separate the arsenic ion adsorbed, wherein the mesoporous alumina is made by a hydrolysis of an aluminum isopropoxide (C9H21AlO3).
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30. A method for recovering arsenic using a mesoporous alumina comprising:
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a process in which an arsenic ion adsorption compound is supported by the mesoporous alumina, a process in which the mesoporous alumina supporting the arsenic ion adsorption compound contacts with an arsenic ion solution, and a process in which arsenic ion is selectively adsorbed by the arsenic ion adsorption compound supported by the mesoporous alumina, wherein the arsenic on adsorption compound is a heteropoly acid. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification