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Preparation method of modified illite adsorbent for removing naphthol green B

A technology of illite and adsorbent, which is applied in the field of preparation of modified illite adsorbent, can solve the problems of difficult discharge standards, high alkalinity, complex molecular structure, etc., achieve adsorption equilibrium time quickly, and have mild reaction conditions. The effect of simple process

Inactive Publication Date: 2016-05-11
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dye wastewater has complex water quality, large water volume, high content of organic pollutants, high chroma, and high alkalinity. At the same time, the molecular structure of dyes is complex and the biodegradability is poor. It is difficult to meet the discharge standards through conventional sewage treatment processes. It is a difficult-to-treat industrial wastewater.
For example, the COD removal rate of such printing and dyeing wastewater by chemical precipitation and air flotation is only about 30%.

Method used

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  • Preparation method of modified illite adsorbent for removing naphthol green B
  • Preparation method of modified illite adsorbent for removing naphthol green B
  • Preparation method of modified illite adsorbent for removing naphthol green B

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Experimental program
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Effect test

Embodiment 1

[0016] A preparation method for removing a modified illite adsorbent of naphthol green B, comprising the steps:

[0017] The illite ore is crushed, sieved, and ground until the particle size is less than 74 μm, and then the illite and cetyltrimethylammonium bromide are mixed according to the weight ratio of 20:1 to prepare a solution, and heated to 80 o C, dropwise add hydrochloric acid with a concentration of 0.1mol / L to adjust the pH to 3~4, then adjust the pH to 75~85 o C Stir at constant temperature and let it stand for 10-12 hours for activation, then dry it to obtain the adsorbent HDTMA-1.

Embodiment 2

[0019] A preparation method for removing a modified illite adsorbent of naphthol green B, comprising the steps:

[0020] The illite ore is crushed, sieved, and ground until the particle size is less than 74 μm, and then the illite and cetyltrimethylammonium bromide are mixed according to the weight ratio of 10:1 to prepare a solution, and heated to 80 o C, dropwise add hydrochloric acid with a concentration of 0.1mol / L to adjust the pH to 3~4, then adjust the pH to 75~85 o C Stir at constant temperature and let it stand for activation for 10-12 hours, then dry it to obtain the adsorbent.

Embodiment 3

[0022] A preparation method of a modified illite adsorbent for removing naphthol green B, comprising the steps of:

[0023] The illite ore is crushed, sieved, and ground until the particle size is less than 74 μm, and then the illite and cetyltrimethylammonium bromide are mixed according to the weight of 30:1 to prepare a solution, and heated to 80 o C, dropwise add hydrochloric acid with a concentration of 0.1mol / L to adjust the pH to 3~4, then adjust the pH to 75~85 o C Stir at constant temperature and let it stand for activation for 10-12 hours, then dry it to obtain the adsorbent.

[0024] Take 0.1 g of the adsorbents prepared in three proportions, respectively, and disperse each in 20 ml of 200 mg / L naphthol green B solution, and oscillate and adsorb at 298K for 30 min. The results are shown in Table 1.

[0025] Table 1 Adsorption effect of different mass ratio adsorbents on naphthol green

[0026] Adsorbent ratio 10:1 20:1 30:1 Removal rate (%) 62.9...

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Abstract

The invention provides a preparation method of modified illite adsorbent for removing naphthol green B. The preparation method includes the following steps that illite ore is smashed, screened and ground, then the illite ore is mixed with cetyltrimethylammonium bromide to be prepared into a mixed solution, then heating is performed, hydrochloric acid is dropwise added to adjust the pH value, standing and activating are performed after constant-temperature stirring, then the mixed solution is placed in an oven to be heated for 20-25 h at the temperature of 75-85 DEG C till the solution is completely dry, and the finished adsorbent is obtained. The process of preparing the adsorbent is simple, and reaction conditions are mild. The prepared adsorbent has high adsorbing capacity on negation ion dye in water, and time for achieving adsorption balance is short. The adsorbent is a good adsorption material for processing anionic dye in waste water.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a preparation method of a modified illite adsorbent for removing naphthol green B. Background technique [0002] The printing and dyeing industry is a highly polluting industry, and 1% to 10% and 1% to 2% of dyes will enter the environment during the use and production of dyes, respectively. However, dye wastewater has complex water quality, large water volume, high content of organic pollutants, high chroma, and high alkalinity. At the same time, the molecular structure of dyes is complex and the biodegradability is poor. It is difficult to meet the discharge standards through conventional sewage treatment processes. It is a difficult-to-treat industrial wastewater. . For example, the COD removal rate of such printing and dyeing wastewater by chemical precipitation and air flotation is only about 30%. Adsorption is a more effective method for removing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28
CPCB01J20/12C02F1/285C02F2101/38C02F2103/30
Inventor 张岩韩林刘雪平王现丽典平鸽袁英贤
Owner HENAN UNIV OF URBAN CONSTR
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