Application of photocatalyst of TiO2 (titanium dioxide) loaded on glass fiber fabric to treating microcystin

The technology of glass fiber cloth and microcystin is applied in the fields of environmental pollution control and water treatment technology, which can solve the problems of insufficient effective oxidizing ability, limitation of popularization and application, low utilization rate of ozone, etc., and achieves good application transformation prospects, light transmission Good performance and improved photocatalytic activity

Inactive Publication Date: 2012-06-13
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] c. The ozone method has a high removal effect on microcystins and produces few harmful disinfection by-products. However, problems such as low ozone utilization rate, low content, and insufficient effective oxidation capacity generally exist, resulting in a decline in its economic efficiency. Promotion App is restricted

Method used

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  • Application of photocatalyst of TiO2 (titanium dioxide) loaded on glass fiber fabric to treating microcystin
  • Application of photocatalyst of TiO2 (titanium dioxide) loaded on glass fiber fabric to treating microcystin
  • Application of photocatalyst of TiO2 (titanium dioxide) loaded on glass fiber fabric to treating microcystin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This kind of photocatalyst used in the treatment of microcystins is realized according to the following steps:

[0024] 1) TiO 2 Sol preparation:

[0025] The TiO 2 Preparation of sol: Dissolve 85mL tetrabutyl titanate in 400mL absolute ethanol, add 15mL hydrolysis inhibitor triethanolamine, stir magnetically for 1.5h to make A solution; mix 9mL deionized water and 50mL absolute ethanol, add nitric acid Adjust the pH to 3.0 to make B solution. Slowly add solution B to solution A with magnetic stirring, and continue to stir for 1 hour after the addition is completed to obtain a yellowish transparent sol; the sol is sealed and aged in a dark place for 24 hours for later use; the ratio of each raw material is: n (Cl 2 h 36 o 4 Ti): n (C 4 h 11 NO 2 ) : n (C 2 h 5 OH): n (H 2 (0)=1:0.86:26.6:2.

[0026] 2) Glass fiber cloth loaded TiO 2 :

[0027] The glass fiber cloth loaded with TiO 2 Follow the steps below: a. Soak a glass fiber cloth with a length o...

Embodiment 2

[0029] This kind of photocatalyst used in the treatment of microcystins is realized according to the following steps:

[0030] 1) TiO 2 Sol preparation:

[0031] The TiO 2 Preparation of sol: Dissolve 85mL tetrabutyl titanate in 400mL absolute ethanol, add 15mL hydrolysis inhibitor triethanolamine, stir magnetically for 1.5h to make A solution; mix 9mL deionized water and 50mL absolute ethanol, add nitric acid Adjust the pH to 3.0 to make B solution. Slowly add solution B to solution A with magnetic stirring, and continue to stir for 1 hour after the addition is completed to obtain a yellowish transparent sol; the sol is sealed and aged in a dark place for 24 hours for later use; the ratio of each raw material is: n (Cl 2 h 36 o 4 Ti): n (C 4 h 11 NO 2 ) : n (C 2 h 5 OH): n (H 2 (0)=1:0.86:26.6:2.

[0032] 2) Glass fiber cloth loaded TiO 2 :

[0033] The glass fiber cloth loaded with TiO 2 Follow the steps below: a. Soak the glass fiber cloth with a length...

Embodiment 3

[0057] This kind of photocatalyst used in the treatment of microcystins is realized according to the following steps:

[0058] 1) TiO 2 Sol preparation:

[0059] The TiO 2 Preparation of sol: Dissolve 85mL tetrabutyl titanate in 400mL absolute ethanol, add 15mL hydrolysis inhibitor triethanolamine, stir magnetically for 1.5h to make A solution; mix 9mL deionized water and 50mL absolute ethanol, add nitric acid Adjust the pH to 3.0 to make B solution. Slowly add solution B to solution A with magnetic stirring, and continue to stir for 1 hour after the addition is completed to obtain a yellowish transparent sol; the sol is sealed and aged in a dark place for 24 hours for later use; the ratio of each raw material is: n (Cl 2 h 36 o 4 Ti): n (C 4 h 11 NO 2 ) : n (C 2 h 5 OH): n (H 2 (0)=1:0.86:26.6:2.

[0060] 2) Glass fiber cloth loaded TiO 2 :

[0061] The glass fiber cloth loaded with TiO 2 Follow the steps below: a. Soak the glass fiber cloth with a length...

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Abstract

The invention discloses application of photocatalyst of TiO2 (titanium dioxide) loaded on a glass fiber fabric to treating microcystin. The glass fiber fabric serves as a catalyst carrier with a load of 0.8-1.2g / 200cm2, and the TiO2 loaded on the glass fiber fabric is of a P25 type. After the TiO2 is treated, hydroxyl radicals are obviously increased during photocatalysis, so that oxidative degradation of the microcystin by means of photocatalysis is improved. Besides, the TiO2 has high photocatalytic activity and is higher in reuse rate.

Description

technical field [0001] The invention relates to a photocatalytic oxidation method of microcystin, using glass fiber cloth (FGC) as a fixed TiO 2 The carrier for improving its photocatalytic activity belongs to the fields of water treatment technology and environmental pollution control technology. Background technique [0002] In recent years, with the aggravation of eutrophication in lakes, cyanobacteria "blooms" have occurred frequently, and cyanobacteria will secrete microcystins in the process of metabolism or after the rupture of algae, polluting water sources, and directly threatening human health. Conventional water treatment processes are difficult to completely remove microcystins from water bodies, and even cause algal cell rupture and release algal toxins into water bodies, so further advanced treatment is required to remove them. [0003] The conventional water treatment method currently adopted to remove microcystins has the following disadvantages: [0004] a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/30C02F1/58B01J21/06
Inventor 陈德强韦昭平陈义群李洋刘小忠阿不都艾尼·买买提
Owner HOHAI UNIV
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