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Preparation method of easy-to-regenerate methylene blue adsorbent

A methylene blue and adsorbent technology, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve environmental secondary pollution, limited adsorption capacity of adsorbents, slow adsorption rate, etc. problems, to achieve the effect of high reuse rate, convenient operation and stable structure

Pending Publication Date: 2021-11-23
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Application Information

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Problems solved by technology

[0005] The traditional adsorbents for treating dyes mainly include carbon materials, alumina, molecular sieves and resins, etc., but the adsorption capacity of these adsorbents is limited and the adsorption rate is slow. , will cause serious secondary pollution to the environment

Method used

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  • Preparation method of easy-to-regenerate methylene blue adsorbent
  • Preparation method of easy-to-regenerate methylene blue adsorbent
  • Preparation method of easy-to-regenerate methylene blue adsorbent

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Embodiment 1

[0029] Step 1: Weigh 1.659g of copper sulfate pentahydrate powder and 0.764g of ammonium dihydrogen phosphate powder respectively, add 40ml of deionized water, disperse ultrasonically for 10 minutes until the materials are fully dissolved, and dissolve the dissolved copper sulfate pentahydrate solution and ammonium dihydrogen phosphate The solutions were mixed in pairs, and after precipitation occurred, 4ml of nitric acid was added dropwise and stirred with a glass rod until the solution was clear to obtain a mixed solution A;

[0030] Step 2: Weigh 5 g of 100 mesh kaolin, stir with the mixed solution A at room temperature for 120 min, and place in an oven to dry for 5 h;

[0031] Step 3: Pulverize the dried material, place it in a muffle furnace for heat treatment, calcine at a temperature of 550°C, and keep it warm for 3 hours. After the material cools down to room temperature, take it out, pulverize and grind it, and obtain an easily regenerated methylene blue adsorbent.

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Abstract

The invention provides a preparation method of an easy-to-regenerate methylene blue adsorbent. The easy-to-regenerate methylene blue adsorbent comprises kaolin, a copper pyrophosphate material compounded on the surface of the kaolin and the like. Copper pyrophosphate and kaolin are compounded to form a stable composite structure, the reusable copper pyrophosphate / kaolin composite material with excellent adsorption performance on methylene blue is obtained, after the material adsorbs the methylene blue to be saturated, hydrogen peroxide is added to catalytically degrade the adsorbed methylene blue, and then regeneration is performed, and the regenerated material has good adsorption performance. The method has the advantages that the material has the characteristics of simple preparation, reusability, environmental friendliness, low cost and mass production, and shows higher economic and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of dye wastewater treatment, in particular to a methylene blue adsorbent and a preparation method thereof. Background technique [0002] Kaolin is a non-metallic mineral, a kind of clay and clay rock mainly composed of kaolinite clay minerals. Its pure kaolin is white and delicate, soft and soft, and has good physical and chemical properties such as plasticity and fire resistance. Kaolin is widely used, mainly used in papermaking, ceramics and refractory materials, followed by coatings, rubber fillers, enamel glazes and white cement raw materials, and a small amount of plastics, paints, pigments, grinding wheels, pencils, daily cosmetics, soap, Pesticides, pharmaceuticals, textiles, petroleum, chemicals, building materials, national defense and other industrial sectors. [0003] Dye wastewater is currently the main industrial wastewater in China that is difficult to treat and is very harmful to the environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30B01J20/28C02F1/28C02F101/30C02F101/38C02F101/36
CPCB01J20/12B01J20/0274B01J20/28016C02F1/281C02F2101/40C02F2101/38C02F2101/36
Inventor 谢宇风田亚铭邓苗刘朋邓建雄熊维威
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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