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Preparation method of alizarin red adsorbent, product and application

An adsorbent, alizarin red technology, applied in the field of materials, can solve the problems of low content of surface active components, increased chemical oxygen consumption, poor physical strength of peanut shells, etc., and achieves good adsorption effect, reduced processing cost, and simple operation. Effect

Inactive Publication Date: 2015-07-29
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, directly using peanut shells to treat magenta dyes, due to the low content of surface active components, the adsorption capacity is not ideal, and the dissolution of soluble organic substances will lead to increased chemical oxygen consumption in water, and the physical properties of peanut shells Poor strength, not strong enough for wastewater treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of alizarin red adsorbent comprises the steps:

[0021] (1) Collect peanut shells and wash the peanut shells with distilled water, then place them in an oven and dry them to constant weight to obtain pretreated peanut shells;

[0022] (2) Pulverize the pretreated peanut shells obtained in step (1) with a pulverizer, and then sieve the powder with a particle size of less than 100 meshes, record it as peanut shell powder, and put it in a dryer for subsequent use;

[0023] (3) Place the peanut shell powder (5g) obtained in step (2) in a three-necked flask, and add epichlorohydrin according to the mass-volume ratio of peanut shell powder and epichlorohydrin as 1:10 (w / v), Then add a NaOH solution with a concentration of 1.25mol / L equivalent to 20 times the weight of peanut shells (w / v, g / ml), then place it in a water bath at 60°C for 30 minutes, filter, wash with distilled water until neutral, Finally, it is baked at 50-70°C to constant weight to obt...

Embodiment 2

[0030] The preparation method of alizarin red adsorbent comprises the steps:

[0031] (1) Collect peanut shells and wash the peanut shells with distilled water, then place them in an oven and dry them to constant weight to obtain pretreated peanut shells;

[0032] (2) Pulverize the pretreated peanut shells obtained in step (1) with a pulverizer, and then sieve the powder with a particle size of less than 100 meshes, record it as peanut shell powder, and put it in a dryer for subsequent use;

[0033] (3) Put the peanut shell powder (5g) obtained in step (2) in a three-necked flask, and add epichlorohydrin according to the ratio of the mass volume of peanut shell powder to epichlorohydrin as 1:8 (w / v), Then add a NaOH solution with a concentration of 1.25mol / L equivalent to 20 times the weight of peanut shells (w / v, g / ml), and then place it in a water bath at 60°C for 30min, 60min, 90min, 120min and 150min respectively. Filter, wash with distilled water until neutral, and final...

Embodiment 3

[0039] The preparation method of alizarin red adsorbent comprises the steps:

[0040] (1) Collect peanut shells and wash the peanut shells with distilled water, then place them in an oven and dry them to constant weight to obtain pretreated peanut shells;

[0041] (2) Pulverize the pretreated peanut shells obtained in step (1) with a pulverizer, and then sieve the powder with a particle size of less than 100 meshes, record it as peanut shell powder, and put it in a dryer for subsequent use;

[0042] (3) Put the peanut shell powder (5g) obtained in step (2) into a three-necked flask, and add epichlorohydrin according to the ratio of the mass volume of peanut shell particles to epichlorohydrin as 1:8 (w / v), Then add NaOH solution with a concentration of 1.25mol / L equivalent to 20 times the weight of peanut shells (w / v, g / ml), and then place them in water baths with temperatures of 40°C, 60°C, 80°C, and 95°C for reaction. After 30 minutes, filter, wash with distilled water until...

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PUM

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Abstract

The invention discloses a preparation method of an alizarin red adsorbent, a product and an application. The preparation method of the adsorbent comprises the steps that a peanut shell is cleaned, baked to the constant weight, crushed and sieved into powder with the particle size less than 100 meshes; epoxy chloropropane and an NaOH solution are added; a reaction is performed for 120min at 80 DEG C; solid-liquid separation is performed; and a residue is collected, washed to be neutral and baked to the constant weight at 50-70 DEG C. The prepared adsorbent is more in aperture and more in surface active component, can improve the physical strength of the peanut shell, has a good adsorption effect on alizarin red dye, and has an adsorption rate exceeding 30%; and the method is used for removing the alizarin red dye, is simple to operate and low in cost, has no secondary pollution, and has an industrial prospect.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a preparation method of an alizarin red adsorbent, a product prepared by the method and an application of the product. Background technique [0002] Alizarin red, which belongs to anthraquinone compounds, is widely used in dyes and acid-base indicators. It has the characteristics of high toxicity, complex structure and high chemical oxygen demand (COD), and is one of the most representative dyes. Its structure contains a benzene ring that has a strong inhibitory effect on organisms, and it is a highly conjugated molecular system, so it is difficult to degrade it into small inorganic molecules by biological methods. At present, the research on this kind of printing and dyeing wastewater mainly focuses on physical adsorption, chemical reagent oxidation, membrane treatment, photocatalytic oxidation and microbial degradation treatment. Most of these methods are limited in wide a...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/58
Inventor 宋应华许惠陈盛明常仕旭
Owner CHONGQING TECH & BUSINESS UNIV
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