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Preparation method of methylene blue adsorbent

A technology of methylene blue and adsorbent, which is applied in the field of preparation of methylene blue adsorbent, can solve the problem of unsatisfactory adsorption effect, and achieve the effect of low cost and high adsorption efficiency

Pending Publication Date: 2020-05-19
WUYI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uses mangosteen shell activated carbon prepared from agricultural waste as raw material to treat methylene blue in wastewater. Although it provides a new way for the recycling of mangosteen shell, the adsorption effect is not ideal.

Method used

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  • Preparation method of methylene blue adsorbent
  • Preparation method of methylene blue adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This example provides a kind of preparation method of methylene blue adsorbent, and the steps include:

[0030] S1: Wash and dry the water hyacinth root, grind and sieve to obtain the water hyacinth root powder;

[0031] S2: Add water hyacinth root powder into the modifier solution, and obtain modified water hyacinth root powder after reaction;

[0032] S3: Wash the modified water hyacinth root powder until the washing water is neutral, and obtain the methylene blue adsorbent after drying;

[0033] The modifier solution is an alcohol solution of alkali.

[0034] In step S1: the number of sieved meshes is greater than 100 meshes. The larger the mesh number, the smaller the particle size of the powder. The mesh size greater than 100 is beneficial to increase the specific surface area of ​​the powder and improve the adsorption efficiency of the adsorbent.

[0035] In step S2: the ratio of water hyacinth root powder to modifier solution is 80-120 g of water hyacinth roo...

Embodiment 2

[0040] In this example, according to the preparation method provided in Example 1, a methylene blue adsorbent, numbered A, was prepared. The specific process is:

[0041] S1: Wash the water hyacinth root, dry it, and grind it into powder, pass through a 100-mesh sieve to obtain dried water hyacinth root powder;

[0042] S2: Mix 25ml of 0.2mol / L NaOH solution and 25ml of absolute ethanol, add 5.0g of dried water hyacinth root powder, stir at room temperature for 24 hours, and obtain modified water hyacinth root powder after reaction;

[0043] S3: The modified water hyacinth root powder is washed until the washing water is neutral, and the methylene blue adsorbent A is obtained after drying.

Embodiment 3

[0045] In this example, according to the preparation method provided in Example 1, a methylene blue adsorbent, numbered B, was prepared. The specific process is:

[0046] S1: Wash the water hyacinth root, dry it, and grind it into powder, pass through a 100-mesh sieve to obtain dried water hyacinth root powder;

[0047] S2: Mix 25ml of 0.4mol / L NaOH solution and 25ml of absolute ethanol, add 5.0g of dried water hyacinth root powder, stir at room temperature for 24 hours, and obtain modified water hyacinth root powder after reaction;

[0048] S3: The modified water hyacinth root powder is washed until the washing water is neutral, and the methylene blue adsorbent B is obtained after drying.

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Abstract

The embodiment of the invention provides a preparation method of a methylene blue adsorbent. The method comprises the following steps: preparing water hyacinth root powder; then, performing modification treatment; finally, preparing the methylene blue adsorbent. The adsorbent can solve the problems of riverway blockage, water quality deterioration and the like caused by super-strong reproductive capacity ofwater hyacinth; waste utilization is realized; the preparation method has the advantages of simple steps, no need of expensive equipment investment, no by-product in the preparation process,and easiness in production and popularization, the prepared adsorbent has high adsorption efficiency on methylene blue, and the removal rate on methylene blue reaches 96.2% under optimal conditions.

Description

technical field [0001] The invention belongs to the technical field of dye wastewater treatment, and in particular relates to a preparation method of a methylene blue adsorbent. Background technique [0002] There are many kinds of dye wastewater and a wide range of sources. Due to the complex water quality, high chroma, high organic content, and high alkalinity of dye wastewater, if untreated dye wastewater is directly discharged into water bodies, it will cause damage and pollution to the natural environment. As a major class of organic pollutants, dyes have a stable molecular structure, are difficult to be biodegraded, and are difficult to handle once they enter water. [0003] Methylene blue is a basic cationic dye widely used in textiles, colorants, leather, printing and other fields, and has certain toxicity. At present, the treatment methods of dye wastewater mainly include chemical, biological and physical methods. Among them, chemical methods include coagulation, ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/30
CPCB01J20/24C02F1/286B01J2220/485B01J2220/4812B01J2220/4806C02F2101/308
Inventor 徐学涛朱文坚余锐壮陈洁李冬利吴盼盼张焜
Owner WUYI UNIV
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