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Sulfate-coated hydrotalcite and preparation method thereof

A technology of hydrotalcite and sulfate, applied in the direction of hydrotalcite, chemical instruments and methods, and other chemical processes, can solve the problems of limited commercialization, expensive zirconium, etc., and achieve the effect of improving efficiency

Inactive Publication Date: 2016-01-20
KOREA INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, zirconium itself is very expensive, thus limiting the commercialization of powdery mesostructured zirconium and granular mesostructured zirconium

Method used

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  • Sulfate-coated hydrotalcite and preparation method thereof
  • Sulfate-coated hydrotalcite and preparation method thereof
  • Sulfate-coated hydrotalcite and preparation method thereof

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Embodiment Construction

[0017] Hereinafter, example embodiments will now be described more fully with reference to the accompanying drawings, in which example embodiments are shown. However, this disclosure may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. In this description, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments.

[0018] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms "a", "an", "the" and "said" are intended to include the plural forms as well, unless the context clearly dictates otherwise. Furthermore, use of the terms "a", ...

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Abstract

Provided are a hydrotalcite having sulfate coated on its surface and a method for preparing the same to achieve improved phosphorus adsorption efficiency. The method for preparing sulfate-coated hydrotalcite comprises: separately providing hydrotalcite and sulfuric acid aqueous solution; immersing hydrotalcite in sulfuric acid aqueous solution; The talc is heat treated, thereby forming sulfate on the surface of the hydrotalcite.

Description

technical field [0001] The invention relates to a sulfate-coated hydrotalcite and a preparation method thereof. Background technique [0002] Generally, methods for removing phosphorus (P) in water include biological removal methods, coagulation-precipitation methods, crystallization methods, adsorption methods, and the like. Among these methods, biological removal method and coagulation-sedimentation method have been widely used. However, a problem with such biological removal methods is that they provide slightly higher concentrations of phosphorus in milligrams per liter of water (several mgP / L) after the removal treatment and can exhibit low treatment efficiency. [0003] Meanwhile, methods for physicochemical treatment of phosphorus include a coagulation-precipitation method using a coagulant. Because of the simplicity and high efficiency of this method, it is the most commonly used method. The coagulation-precipitation method can remove phosphorus to a low concentra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/08B01J20/32B01J41/10C02F1/28C02F1/42
CPCC04B35/62635C04B35/6264C04B35/62695C04B35/632C04B35/64C04B35/58C02F1/281C01P2004/80C02F1/58C01F7/785
Inventor 李相协崔在佑李承沿洪锡垣李在祥朴基英
Owner KOREA INST OF SCI & TECH