Preparation method of lanthanum modified activated carbon adsorption material

A technology of activated carbon adsorption and powdered activated carbon, which is applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low selectivity, low recovery rate, and low adsorption efficiency, and achieve High selectivity, high adsorption efficiency, and the effect of improving adsorption efficiency

Inactive Publication Date: 2021-10-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low adsorption efficiency, low selectivity and low recovery rate in existing lanthanum-modified adsorption phosphate materials, and provide a preparation method of lanthanum-modified activated carbon adsorption material

Method used

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  • Preparation method of lanthanum modified activated carbon adsorption material
  • Preparation method of lanthanum modified activated carbon adsorption material
  • Preparation method of lanthanum modified activated carbon adsorption material

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specific Embodiment approach 1

[0030] DETAILED DESCRIPTION OF THE INVENTION First: The preparation method of ruthenium-modified active carbon suction material is achieved as follows:

[0031] First, hexahydrochloride and 200 megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload

[0032] Second, the mixed solution A is dispersed in the propanol, and then the pH range is adjusted with 1 M NaOH solution, stirred for 30 to 60 min, and the mixed solution B is obtained.

[0033] Third, the mixed solution B is transferred to a polytexfluoroethylene high pressure reaction kettle 4 to 6 h, and the reaction product is centrifted, and then freeze dry after washing, i.e., the preparation of ruthenium-modified active carbon suction materials.

[0034] In the step of the present embodiment, a 200 mesh powder activated carbon is employed, and the prepared final product is a ruthenium-modified powder activated carbon (LA-AC); if a particul...

specific Embodiment approach 2

[0035] DETAILED DESCRIPTION OF THE INVENTION The present embodiment is different from the specific embodiment, and hexahydrate chloride = 0.1 to 0.3 mol / L in a mixed solution A. Other steps and parameters are identical to those of the specific embodiments.

specific Embodiment approach 3

[0036] DETAILED DESCRIPTION OF THE INVENTION 3: The present embodiment differs from the specific embodiment, and the amount of powder activated carbon is 0.1 to 0.4 g; the amount of particulate activated carbon is 0.1 to 0.4 g; the amount of ultrapure water is 30 ~ 50ml. Other steps and parameters are identical to those of the specific embodiments.

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Abstract

The invention discloses a preparation method of a lanthanum modified activated carbon adsorption material, and relates to the technical field of biomass material adsorption. The invention aims to solve the problems of low adsorption efficiency, low selectivity and low recovery rate of the existing lanthanum modified phosphate adsorption material. The method comprises the following steps: 1, mixing lanthanum chloride hexahydrate with activated carbon, adding water and stirring to obtain a mixed solution A; 2, dispersing the mixed solution A in glycerol to prepare a mixed solution B; and 3, carrying out a hydrothermal reaction on the mixed solution B, centrifuging and washing the product, and freeze-drying. The method is simple and low in cost; the form of the activated carbon is kept good, the loaded La nanoparticles form oxygen vacancies on the surface of the activated carbon to increase active sites on the surface of the material, and the adsorption efficiency of phosphate is improved by utilizing the synergistic effect of the two components and the specific affinity of La to the phosphate; and the material shows good phosphate adsorption performance and selectivity in a relatively large pH range, and the regeneration rate is high. The material is suitable for adsorbing phosphate in sewage.

Description

Technical field [0001] The present invention relates to the field of biomass material adsorption technology, and more particularly to a method of preparing a ruthenium-modified active carbon suction material. Background technique [0002] Phosphorus is non-renewable resources, my country is about to face the phosphorus crisis, and the phosphorus super standard in the water body is an important reason for the eutrophication of the water body, so the removal and recovery of phosphorus is of great significance. The chemical adsorption method is widely used in the removal of phosphates in sewage due to the advantages of good addition effects, stable effects. However, the currently common chemical adsorbents have a poor selectivity, and the adsorption capacity has a certain limit, and it is greatly reduced to reduce the removal effect in actual sewage, thereby limiting commercial use of the adsorbent material. Therefore, high-efficiency adsorbent materials that have large adsorption c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/10
CPCB01J20/20B01J20/02C02F1/283C02F1/281B01J2220/42B01J2220/4806C02F2101/105
Inventor 李昂杜梦陈志强温沁雪汤爱琪于洋
Owner HARBIN INST OF TECH
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