Preparation method of nano photochemical catalytic oxidizer for removing arsenic (III) in drinking water

A nano-light, drinking water technology, applied in chemical instruments and methods, physical/chemical process catalysts, oxidized water/sewage treatment, etc., to achieve the effects of easy storage, convenient transportation, and improved economic performance

Inactive Publication Date: 2012-09-19
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About Supported Nano TiO 2 There have been many studies on photocatalytic degradation of organic pollutants, but activated carbon fibers loaded with nano-TiO 2 It has not been widely used in the field of As(Ⅲ) oxidation in drinking water

Method used

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  • Preparation method of nano photochemical catalytic oxidizer for removing arsenic (III) in drinking water
  • Preparation method of nano photochemical catalytic oxidizer for removing arsenic (III) in drinking water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The selected material is: the selected pore volume is 0.503 cm 3 / g activated carbon fiber, monoalcohol (C 1 -C 6 ), low-carbon polyol series (C 1 -C 10 ), acetylacetone, glacial acetic acid, deionized water, inert gas (common), etc.

[0028] The specific steps are:

[0029] (1) Select a commercially available pore volume of 0.503 cm 3 / g of activated carbon fiber material, boiled in boiling water (deionized water) for 3 h, and ultrasonically treated for 60 min;

[0030] (2) At room temperature, in a 250 mL three-neck flask equipped with a magnetic stirrer, activated carbon fiber, and a dropping funnel, add 20 mL tetrabutyl titanate dissolved in 40 mL absolute ethanol, and add 10 mL dropwise under magnetic stirring. mL acetylacetone and 15 mL glacial acetic acid, then add a mixture of 80 mL absolute alcohol solution and 15 mL water.

[0031] (3) Ultrasonic oscillation for 2 h after the addition was completed, and then stand still for 48 h.

[0032] (4) Weigh 15 ...

Embodiment 2

[0037] The selected material is: the selected pore volume is 0.503 cm 3 / g activated carbon fiber, monoalcohol (C 1 -C 6 ), low-carbon polyol series (C 1 -C 10 ), acetylacetone, glacial acetic acid, deionized water, inert gas (common), etc.

[0038] The specific steps are:

[0039] (1) Select a commercially available pore volume of 0.503 cm 3 / g of activated carbon fiber material, boiled in boiling water (deionized water) for 3 h, and ultrasonically treated for 60 min;

[0040](2) At room temperature, in a 250 mL three-neck flask equipped with a magnetic stirrer, activated carbon fiber, and a dropping funnel, add 20 mL tetrabutyl titanate dissolved in 40 mL absolute ethanol, and add 10 mL dropwise under magnetic stirring. mL acetylacetone and 15 mL glacial acetic acid, then add a mixture of 80 mL absolute alcohol solution and 15 mL water.

[0041] (3) Ultrasonic oscillation for 2 h after the addition was completed, and then stand still for 48 h.

[0042] (4) Weigh 15 g...

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Abstract

The invention discloses a preparation method of nano photochemical catalytic oxidizer for removing arsenic (III) in drinking water, and relates to a preparation method of oxidizer. The method comprises the following steps: selecting activated carbon fiber material with the pore volume being 0.100 to 0.500cm3/g, preparing titanium dioxide sol, dissolving 20mL of titanium salt in 40ml of absolute alcohol solution, adding 8 to 12mL of acetylacetone and 12 to 20mL of glacial acetic acid and performing magnetic stirring, then adding 80 to 100mL of absolute alcohol solution and 15 to 20mL of water mixed liquor, preparing activated carbon fiber carrying titanium dioxide, weighing 10 to 20g of pretreated activated carbon fiber to be added into 100 to 200mL of titanium dioxide sol, after dipping the pretreated activated carbon fiber for 12 to 48h, evaporating solvent to be dry, and calcining for 1 to 2h to obtain the nano photochemical catalytic oxidizer for removing arsenic (III). The oxidizer has high oxidation capacity and a small volume, is safe and stable, and is easy to store and transport.

Description

technical field [0001] The invention relates to a method for preparing a photocatalytic oxidizer of As(III) in water, in particular to a method for preparing a loaded nanometer photocatalytic oxidant for oxidizing and removing As(III). Background technique [0002] Arsenic is a carcinogenic and mutagenic factor, and it also has teratogenic effects on animals. Long-term exposure to arsenic can cause blackfoot, neuralgia, vascular damage, increase heart disease, and lead to skin, lung, liver, bladder, and prostate cancer. . The intake of arsenic by the human body is mainly through food and drinking water, and the absorption of arsenic by the digestive system is the most important way. Therefore, removing arsenic from drinking water is an effective measure to prevent and control endemic arsenic poisoning. The World Health Organization revised the maximum allowable concentration of arsenic in drinking water in 1993 and determined it to be 10 μg·L -1 . The European Union and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J21/06B01J35/06C02F1/72C02F1/30C02F1/58
Inventor 姚淑华张亚星石中亮
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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