Adsorbing material for removing methylene blue from water, and method for removing methylene blue from water by using adsorbing material

A methylene blue and adsorption material technology, applied in the field of water treatment, can solve the problems of limited quantity of γ-cyclodextrin and unsatisfactory adsorption of aromatic organic compounds, etc., and achieve the effect of easy control of conditions, convenient operation and improved adsorption capacity

Inactive Publication Date: 2016-12-07
东莞市环境监测中心站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of groups on the surface of carbon nanotubes and fullerenes, the amount of γ-cyclodextrin loaded on

Method used

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  • Adsorbing material for removing methylene blue from water, and method for removing methylene blue from water by using adsorbing material
  • Adsorbing material for removing methylene blue from water, and method for removing methylene blue from water by using adsorbing material
  • Adsorbing material for removing methylene blue from water, and method for removing methylene blue from water by using adsorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add 0.1g of graphene oxide into 20ml of deionized water, and sonicate for 1 hour to obtain a 5mg / ml graphene oxide dispersion;

[0034] (2) Add 0.1g of γ-cyclodextrin to the graphene oxide dispersion, and adjust the pH of the mixture to 8;

[0035] (3) Add 2ml of hydrazine hydrate into the mixture, control the temperature of the mixture to 50°C, and wait for 3 hours to react to obtain a solid product;

[0036] (4) The solid product is repeatedly washed to neutrality, and centrifuged to obtain a graphene / γ-cyclodextrin composite adsorption material.

Embodiment 2

[0038] (1) Add 0.1g of graphene oxide into 20ml of deionized water, and ultrasonicate for 3 hours to obtain a 5mg / ml graphene oxide dispersion;

[0039] (2) Add 0.4g γ-cyclodextrin to the graphene oxide dispersion, and adjust the pH of the mixture to 8;

[0040] (3) Add 3ml of hydrazine hydrate into the mixture, control the temperature of the mixture to 60°C, and obtain a solid product after 4 hours of reaction;

[0041] (4) The solid product is repeatedly washed to neutrality, and centrifuged to obtain a graphene / γ-cyclodextrin composite adsorption material.

Embodiment 3

[0043] (1) Add 0.1g of graphene oxide into 20ml of deionized water and ultrasonicate for 4 hours to obtain a graphene oxide dispersion;

[0044] (2) Add 0.7g γ-cyclodextrin to the graphene oxide dispersion, and adjust the pH of the mixture to 9;

[0045] (3) Add 3ml of hydrazine hydrate into the mixture, control the temperature of the mixture to 60°C, and obtain a solid product after 6 hours of reaction;

[0046] (4) The solid product is repeatedly washed to neutrality, and centrifuged to obtain a graphene / γ-cyclodextrin composite adsorption material.

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Abstract

The invention discloses an adsorbing material for removing methylene blue from water, and a method for removing methylene blue from water by using the adsorbing material. The adsorbing material is prepared by the following steps: dispersing graphene oxide into deionized water; adding gamma-cyclodextrin to form mixed liquid; controlling the temperature of the mixed liquid and adjusting the pH value; adding hydrazine hydrate to reduce the graphene oxide to obtain a solid product; and repeatedly washing and centrifuging the product to obtain the adsorbing material. The method for removing the methylene blue from the water by using the adsorbing material comprises the steps of adding the adsorbing material into a methylene blue-containing solution, adjusting the pH value of the mixed solution to be 1-10, placing the mixed solution into a thermostatic oscillator; oscillating for 12 hours, and after adsorption is finished, filtering the residual solution after adsorption by a filter membrane so as to remove methylene blue from water. The graphene/gamma-cyclodextrin composite adsorbing material prepared by the method has high adsorption capacity on the methylene blue in water.

Description

technical field [0001] The invention relates to the removal of methylene blue in water, in particular to an adsorption material for removing methylene blue in water and a method for removing methylene blue in water, belonging to the technical field of water treatment. Background technique [0002] Wastewater discharged from industries such as textiles, leather, paper, printing and cosmetics contains a large amount of aromatic structural phenolic compounds. The wanton discharge of these phenolic wastewater has brought serious harm to humans and the ecological environment. Methylene blue is the most common phenolic pollutant in wastewater, how to remove methylene blue in wastewater is particularly important. Adsorption is considered to be one of the most promising methods due to its simple operation, high efficiency, and flexibility. The key to the adsorption method is the selection and preparation of the adsorption material. An ideal adsorption material should have stable ch...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/24C02F101/36C02F101/38
CPCB01J20/20B01J20/24C02F1/28C02F1/283C02F2101/36C02F2101/38C02F2101/40
Inventor 谭平袁东桂明生
Owner 东莞市环境监测中心站
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