Preparation method and application of modified active carbon fiber based on 8-hydroxyquinoline ferrum

A technology of activated carbon fiber and quinoline iron, applied in chemical instruments and methods, textile industry wastewater treatment, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of narrow pH range, unsuitable for wastewater treatment, easy The formation of sludge and other problems can achieve the effect of efficient treatment of printing and dyeing wastewater, reuse, and mild reaction conditions.

Active Publication Date: 2013-09-18
苏州驰行智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional Fenton method has many limitations: (1) The pH range of the reaction is too narrow and must be carried out in a strong acidic environment of 2-4, so it has almost no effect on neutral or alkaline printing and dyeing wastewater; (2) Fe used 2+ and Fe 3+ It is easy to form sludge and cause secondary pollution
[0005] However, the devices required by the above-mentioned preparation method and treatment method are relatively complicated, and the energy consumption is high, so it is not suitable for a large amount of wastewater treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 2.177g of 8-hydroxyquinoline and dissolve in 200ml of absolute ethanol, stir until completely dissolved, and control the pH range of 3-6; weigh 1.35g of ferric chloride hexahydrate, add 100ml of absolute ethanol to dissolve, and then stir While slowly adding ferric chloride hexahydrate solution into the ethanol solution of 8-hydroxyquinoline, 8-hydroxyquinoline iron solution is obtained. Next, 5 g of activated carbon fibers were added to the 8-hydroxyquinoline iron solution, ultrasonically treated for 1 hour, and left to stand for 2 hours, the activated carbon fibers were taken out, washed and dried, and activated carbon fibers with high-efficiency treatment of dye wastewater were obtained.

[0022] According to the experiment, add 0.15g activated carbon fiber to 25ml 0.05g / L X-3B active red dye wastewater with a pH of 7, then drop in 0.1mL hydrogen peroxide, shake in a water bath at 50°C for 10 minutes, the dye The removal rate is 99.7%.

[0023]

Embodiment 2

[0025] Weigh 3.36g of 8-hydroxyquinoline-5sulfonic acid and dissolve it in 200ml of absolute ethanol, stir until completely dissolved, and control the pH range of 3-6; weigh 1.35g of ferric chloride hexahydrate, add 100ml of absolute ethanol to dissolve , and then slowly add the ferric chloride hexahydrate solution dropwise into the ethanol solution of 8-hydroxyquinoline-5-sulfonic acid while stirring to obtain 8-hydroxyquinoline-5-sulfonic acid iron solution. Next, 5 g of activated carbon fibers were added to 8-hydroxyquinoline 5-iron sulfonate solution, ultrasonically treated for 1 hour, and left to stand for 2 hours, the activated carbon fibers were taken out, washed and dried, and activated carbon fibers with high characteristics for treating dye wastewater were obtained.

[0026] According to experiments, in 25ml of 0.05g / L Acid 1 acid red, pH 7 dye wastewater, add 0.15g of activated carbon fiber, then drop 0.1mL of hydrogen peroxide, at 40 o In the water bath of ...

Embodiment 3

[0028] Weigh 2.177g of 8-hydroxyquinoline and dissolve in 200ml of absolute ethanol, stir until completely dissolved, and control the pH range of 3-6; weigh 1.35g of ferric chloride hexahydrate, add 100ml of absolute ethanol to dissolve, and then stir While slowly adding ferric chloride hexahydrate solution into the ethanol solution of 8-hydroxyquinoline, 8-hydroxyquinoline iron solution is obtained. Next, 5 g of activated carbon fibers were added to the 8-hydroxyquinoline iron solution, ultrasonically treated for 1 hour, left to stand for 2 hours, the activated carbon fibers were taken out, washed and dried, and activated carbon fibers with high characteristics of treating dye wastewater were obtained.

[0029] According to the experiment, in 25ml of 0.05g / L rhodamine B, dye wastewater with a pH of 7, add 0.3g of activated carbon fiber, then drop in 0.15mL of hydrogen peroxide, shake in a water bath at 50°C for 15 minutes, the dye removal rate 99.1%.

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Abstract

The invention discloses a preparation method and application of a modified active carbon fiber based on 8-hydroxyquinoline ferrum. The preparation method of the supported active carbon fiber comprises the following steps of: (1) respectively dissolving ferric salt and 8-hydroxyquinoline compounds into an organic solvent, and mixing the ferric salt and the 8-hydroxyquinoline compounds according to a certain proportion to prepare a quinoline ferrum complex solution; (2) supporting a quinoline ferrum complex on an active carbon fiber by using an adsorption method or covalent bond grafting method; and (3) finally, taking out the active carbon fiber, washing the surface of the active carbon fiber by using water, and placing the active carbon fiber into a drying oven to dry to obtain the modified active carbon fiber. The modified active carbon fiber is simple in preparation, lower in requirement for reaction environments, capable of efficiently treating printing and dyeing wastewater through catalyzing hydrogen peroxide under the condition that the pH is 2-11, being repeatedly used many times and making up the defects of secondary pollution, narrow pH application range and the like of the traditional Fenton, and higher in implementation value and socioeconomic benefit.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a preparation method and application of an activated carbon fiber-loaded 8-hydroxyquinoline iron catalyst. Background technique [0002] According to statistics, my country's textile industry produces more than 2 billion tons of wastewater every year, of which printing and dyeing wastewater accounts for 80%. Therefore, how to treat printing and dyeing wastewater better and more efficiently is an important problem that needs to be solved urgently. Among the wastewater treatment methods, the Fenton method is widely used and more effective. [0003] The Fenton method is an advanced oxidation method. The hydroxyl radicals produced by the reaction (oxidation potential 2.8V, second only to fluorine oxidation potential 2.87V) have strong oxidative properties and can oxidize dye molecules and other dyes in printing and dyeing wastewater. Toxic and harmf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C02F1/72C02F103/30
Inventor 姚玉元孙利杰王列陈文兴吕汪洋
Owner 苏州驰行智能科技有限公司
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