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Adsorption application of modified mussel shells to methylene blue

A mussel shell and modification technology, which is applied in the field of modified mussel shell and its preparation method and the application field of methylene blue adsorption, can solve the problems of aggravating the difficulty of decolorization treatment of printing and dyeing wastewater, complex components, high concentration, etc., and achieve good dye adsorption performance , Modification conditions are simple, improve the effect of adsorption

Active Publication Date: 2021-11-09
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex composition, large chroma and high concentration of printing and dyeing wastewater, there are various hydrophilic direct dyes, acid dyes and hydrophobic vat dyes, which greatly increase the difficulty of decolorization treatment of printing and dyeing wastewater.

Method used

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  • Adsorption application of modified mussel shells to methylene blue
  • Adsorption application of modified mussel shells to methylene blue
  • Adsorption application of modified mussel shells to methylene blue

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A preparation method of modified mussel shells, comprising the following steps:

[0033] S1. Preparation of magnetic nanoparticles: In a nitrogen atmosphere, 1g of ferric chloride hexahydrate and 2g of ferrous chloride tetrahydrate were heated up to a reaction temperature of 50°C, and then 10mL of 20wt% ammonia water was added dropwise, and reacted at a constant temperature under nitrogen protection for 2h. to room temperature, the synthesized magnetic nanoparticles were washed three times with deionized water, separated by a magnet, and set aside;

[0034] S2. Pre-treatment of mussel shells: clean the mussel shells brought back from the farm, remove the remaining shell meat, silk, and moss on the surface, dry them at 100°C, and put them into a high-temperature resistance furnace for high-temperature carbonization under nitrogen protection. Raise the temperature by 50°C every 10 minutes, up to 800°C, cool down after carbonization for 30 minutes, grind finely, and set as...

Embodiment 2

[0038] A preparation method of modified mussel shells, comprising the following steps:

[0039] S1. Preparation of magnetic nanoparticles: In a nitrogen atmosphere, 1g of ferric chloride hexahydrate and 3g of ferrous chloride tetrahydrate are heated to a reaction temperature of 60°C, and then 30mL of 24wt% ammonia water is added dropwise. to room temperature, the synthesized magnetic nanoparticles were washed three times with deionized water, separated by a magnet, and set aside;

[0040] S2. Pre-treatment of mussel shells: clean the mussel shells brought back from the farm, remove the remaining shell meat, silk, and moss on the surface, dry them at 100°C, and put them into a high-temperature resistance furnace for high-temperature carbonization under nitrogen protection. Raise the temperature by 50°C every 10 minutes, up to 800°C, cool down after carbonization for 30 minutes, grind finely, and set aside;

[0041]S3. Preparation of magnetic mussel shells: 2g of magnetic nanop...

Embodiment 3

[0044] A preparation method of modified mussel shells, comprising the following steps:

[0045] S1. Preparation of magnetic nanoparticles: 1g of ferric chloride hexahydrate and 2.5g of ferrous chloride tetrahydrate were heated to a reaction temperature of 55°C in a nitrogen atmosphere, then 20mL of 22wt% ammonia water was added dropwise, and reacted at constant temperature for 3.5h under nitrogen protection , down to room temperature, the synthesized magnetic nanoparticles were washed three times with deionized water, separated by a magnet, and set aside;

[0046] S2. Pre-treatment of mussel shells: clean the mussel shells brought back from the farm, remove the remaining shell meat, silk, and moss on the surface, dry them at 100°C, and put them into a high-temperature resistance furnace for high-temperature carbonization under nitrogen protection. Raise the temperature by 50°C every 10 minutes, up to 800°C, cool down after carbonization for 30 minutes, grind finely, and set as...

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Abstract

The present invention proposes a preparation method of modified mussel shells, comprising the following steps: S1. preparation of magnetic nanoparticles; S2. pretreatment of mussel shells; S3. preparation of magnetic mussel shells: adding magnetic nanoparticles and ammonia water respectively Add the silane coupling agent dropwise to the deionized water, heat up to the reaction temperature, add mussel shell powder to react, cool down to room temperature, separate with magnet, and set aside; S4. Preparation of modified mussel shell: mix lactic acid, silane coupling agent and Add the magnetic mussel shells into deionized water, stir evenly, slowly add the catalyst solution dropwise, stir at room temperature, wash the product three times with deionized water and absolute ethanol, magnetically separate, dry, and grind to obtain the modified mussel shells . The modified mussel shell has good adsorption performance for methylene blue, the modification condition is simple, the operation is convenient, and it has strong operability. Using discarded mussel shells as raw materials has good environmental benefits and can produce good economic benefits.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing sewage treatment, in particular to a modified mussel shell, a preparation method thereof and the application of methylene blue adsorption. Background technique [0002] With the rapid development of my country's printing and dyeing industry, the wastewater discharge of the printing and dyeing industry has accounted for 35% of my country's industrial wastewater discharge. Due to the complex composition, large chroma and high concentration of printing and dyeing wastewater, there are various hydrophilic direct dyes, acid dyes and hydrophobic vat dyes, which greatly increase the difficulty of decolorization treatment of printing and dyeing wastewater. At present, the methods commonly used in the industry for the treatment of printing and dyeing wastewater mainly include flocculation precipitation, oxidation, adsorption, biodegradation and other methods. Compared with other treatment meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/28B01J20/30B01J20/20C02F1/28C02F101/36C02F101/38
CPCB01J20/20B01J20/28007B01J20/28009B01J20/28021B01J2220/4881C02F1/283C02F2101/36C02F2101/38C02F2101/40
Inventor 刘梅陈庆国郝焱杨桥赵美璐
Owner ZHEJIANG OCEAN UNIV
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