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Composite adsorption material for removing hypochlorite from water and preparation method for adsorption material

A composite adsorption material and adsorption material technology, applied in the field of wastewater treatment in environmental protection, can solve the problems of high cost of hypochlorite and low treatment efficiency of adsorption materials, and achieve the effects of low cost, efficient adsorption and large adsorption capacity

Inactive Publication Date: 2013-01-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of low treatment efficiency of the current adsorption materials, the present invention provides a wood-grass composite adsorption material, which can efficiently remove hypochlorite in water.
[0006] Another object of the present invention is to solve the problem that the cost of the removal method of hypochlorite in existing drinking water is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put the timu prairie material into a cooking pot to cook, then add a sulfuric acid solution with a mass fraction of 60% to the obtained slurry, and stir at 45°C for 2 hours; process the treated suspension with an ultrasonic oscillator at 40% output for 5 Minutes later, centrifuge to precipitate and filter; the resulting product is mixed with K 2 CO 3 After mixing in a mass ratio of 1:1, put it into a tube furnace to raise the temperature at 25°C / min, and use N 2 (90mL / min) protect and heat up to different temperatures for activation for 50 minutes, rinse with distilled water until neutral after cooling, and dry at 105°C to obtain the adsorption material of the present invention.

[0020] The adsorption material was put into 500 mL of wastewater containing hypochlorite with a concentration of 200 mg / L, and the adsorption was carried out for 4 hours at a pH value of 6.0, and the adsorption rate was 90.7%.

Embodiment 2

[0022] Put the timu prairie material into a cooking pot for cooking, then add a sulfuric acid solution with a mass fraction of 62% to the obtained slurry, and stir at 50°C for 3 hours; process the treated suspension with an ultrasonic oscillator at 40% output for 5 - After 10 minutes, centrifuge the precipitate and filter; the resulting product is mixed with K 2 CO 3 After mixing in a mass ratio of 1:1, put it into a tube furnace to raise the temperature at 25°C / min, and use N 2 (90mL / min) protect and heat up to different temperatures for activation for 55 minutes, rinse with distilled water until neutral after cooling, and dry at 105°C to obtain the adsorption material of the present invention.

[0023] The adsorption material is put into 500 mL volume of wastewater containing hypochlorite at a concentration of 220 mg / L. When the pH value is 6.5, it is adsorbed for 4.5 hours, and the adsorption rate is 91.5%.

Embodiment 3

[0025] Put the timu prairie material into a cooking pot for cooking, then add a sulfuric acid solution with a mass fraction of 64% to the obtained slurry, and stir for 4 hours at 55°C; process the treated suspension with an ultrasonic oscillator at 40% output for 5 - After 10 minutes, centrifuge the precipitate and filter; the resulting product is mixed with K 2 CO 3 After mixing in a mass ratio of 1:1, put it into a tube furnace to raise the temperature at 25°C / min, and use N 2 (90mL / min) protect and heat up to different temperatures for activation for 60 minutes, rinse with distilled water until neutral after cooling, and dry at 105°C to obtain the adsorption material of the present invention.

[0026] The adsorption material was put into 500 mL of wastewater containing hypochlorite with a concentration of 240 mg / L, and the adsorption was carried out for 5 hours at a pH value of 7.0, and the adsorption rate was 92.4%.

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Abstract

The invention discloses an adsorption material for hypochlorite and a preparation method for the adsorption material, and belongs to the field of material preparation. The preparation method comprises the following steps of: cooking timothy hay serving as a raw material, adding a sulfuric acid solution at certain mass concentration, and stirring; treating suspension by using an ultrasonic oscillator, performing centrifugal precipitation, and filtering; and mixing a product and K2CO3 in a mass ratio of 1:1, activating under the protection of N2, cooling, washing until the solution is neutral, and drying to obtain the adsorption material with high adsorption property. The preparation method is innovative, novel and unique, and the prepared material has a good adsorption effect on the hypochlorite in water.

Description

technical field [0001] The invention relates to a composite adsorption material of hypochlorite in water and a preparation method thereof, in particular to the advanced treatment of water containing hypochlorite, and belongs to the field of wastewater treatment in environmental protection. Background technique [0002] Currently, many countries treat Cl 2 and ClO - A widely used disinfectant for tap water, however using ClO - As a chlorine disinfectant, it will produce chlorate and hypochlorite which are harmful to the human body. Under the catalysis of the myeloperoxidase of heme in human tissue, the reaction of peroxide and chloride can produce ClO - Or HClO. This ClO produced in blood cells - In the process of oxidative damage of biomacromolecules, human cell tissue will be damaged, and it will cause cancer of body tissue after a long time. If excess ClO is present in the water - , after the human body ingests it, it will damage the cell tissue in the body, and in s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/58
Inventor 涂保华雷春生梅宇韬
Owner CHANGZHOU UNIV
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