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Preparation method of high-efficiency composite attapulgite/rice hull activated carbon purified water material

A technology of attapulgite and composite materials, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, and can solve problems such as difficulty in meeting wastewater treatment requirements, and achieve simple steps, increased bonding performance, and excellent performance Effect

Inactive Publication Date: 2013-09-18
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the increasingly serious water pollution, there are many types of pollutants in the water, and the pollution components are becoming more and more complex, such as dyes, heavy metal ions and fluoride, etc., and the conventional secondary treatment methods can no longer meet its requirements.
Due to the advantages of high efficiency, economy, low energy consumption and simple treatment process, the adsorption method has gradually become an effective technical method in the field of wastewater treatment, and the effect of adsorption treatment is closely related to its own adsorbent. Some conventional adsorption methods with selective adsorption Chemicals are difficult to meet the requirements of wastewater treatment

Method used

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  • Preparation method of high-efficiency composite attapulgite/rice hull activated carbon purified water material
  • Preparation method of high-efficiency composite attapulgite/rice hull activated carbon purified water material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Pass 5 kg of rice husk and 25 kg of attapulgite mixture through a 200-mesh filter screen to obtain a uniformly mixed powder of rice husk and attapulgite; take 10 kg of mixed powder and add it to 40 kg with a molar concentration of 1.0 In a mole / liter sodium hydroxide solution, let it stand for 24 hours; under a nitrogen atmosphere, heat up to 450 ° C, and roast for 12 hours;

[0018] 2. Disperse the composite material obtained in step 1 into 66.7 kg of deionized water, heat and boil for 90 minutes, keep the system temperature at 60°C, and adjust the pH value of the system with a hydrochloric acid solution with a molar concentration of 1.0 mol / liter while stirring. 10. Suction filtration and drying to obtain the attapulgite / rice husk activated carbon composite material.

Embodiment 2

[0020] 1. Pass 16 kg of rice husk and 20 kg of attapulgite mixture through a 325-mesh filter screen to obtain a uniform mixed powder of rice husk and attapulgite; take 15 kg of mixed powder and add it to 33.3 kg with a molar concentration of 4.0 In a mol / L potassium hydroxide solution, let it stand for 8 hours; under a nitrogen atmosphere, heat up to 530 ° C, and roast for 5 hours;

[0021] 2. Add the composite material obtained in step 1 into 150 kg of deionized water, heat and boil for 30 minutes, keep the system temperature at 90°C, and while stirring, adjust the pH value of the system with a phosphoric acid solution with a molar concentration of 0.5 mol / liter 8. Suction filtration and drying to obtain the attapulgite / rice husk activated carbon composite material.

Embodiment 3

[0023] 1. Pass 10 kg of rice husk and 25 kg of attapulgite mixture through a 200-mesh filter screen to obtain a uniform mixed powder of rice husk and attapulgite; take 5 kg of mixed powder and add it to 16.7 kg with a molar concentration of 2.0 In a mol / L potassium hydroxide solution, let stand for 16 hours; under a nitrogen atmosphere, heat up to 500°C, and roast for 8.5 hours;

[0024] 2. Add the composite material obtained in step 1 into 100 kg of deionized water, heat and boil for 45 minutes, keep the system temperature at 80°C, and while stirring, adjust the pH of the system with a sulfuric acid solution with a molar concentration of 0.7 mol / liter 9. Suction filtration and drying to obtain the attapulgite / rice husk activated carbon composite material.

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Abstract

The invention relates to a preparation method of a high-efficiency composite attapulgite / rice hull activated carbon purified water material. The preparation method is characterized in that specifically, attapulgite and rice hulls are utilized as raw materials, the attapulgite and the rice hulls are simultaneously subjected to activation and counterbore through alkali treatment, and then a one-step method is adopted to prepare the high-efficiency composite attapulgite / rice hull activated carbon purified water material. The composite attapulgite / rice hull activated carbon purified water material prepared by using the method provided by the invention has the excellent adsorption property.

Description

technical field [0001] The invention relates to a preparation method of an attapulgite / rice husk activated carbon high-efficiency composite water purification material, which belongs to the technical field of high-value non-metallic ore and solid waste resource utilization. Background technique [0002] Due to the increasingly serious water pollution, there are many types of pollutants in water, and the pollution components are becoming more and more complex, such as dyes, heavy metal ions and fluorides, etc., and conventional secondary treatment methods can no longer meet its requirements. Due to the advantages of high efficiency, economy, low energy consumption and simple treatment process, the adsorption method has gradually become an effective technical method in the field of wastewater treatment, and the effect of adsorption treatment is closely related to its own adsorbent. Some conventional adsorption methods with selective adsorption It is difficult to meet the requi...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 李子越林丽君房宏姚超刘文杰左士祥傅成义
Owner CHANGZHOU UNIV
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