Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Photocatalyst for treating waste water containing phenol and its preparation method

A photocatalyst and wastewater treatment technology, applied in the direction of physical/chemical process catalysts, catalyst carriers, chemical instruments and methods, etc., can solve the problems of reduced photocatalytic activity, difficult recycling, easy agglomeration, etc., to achieve simple preparation process, high ratio Good surface area and good repeatability

Inactive Publication Date: 2007-03-21
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to powder nano TiO 2 Catalysts have weaknesses such as easy deactivation, easy agglomeration, and difficulty in recycling during use, which severely limits their application in the field of wastewater treatment
In order to solve this problem, people try to combine TiO 2 The powder is immobilized on a carrier, and the supported TiO 2 photocatalyst, but the loading process was found to be 2 The photocatalytic activity of the
For example: Sabate J, Anderson M A, Aguado M A, Gimenez J, Cervera March S, Hill C G Jr. et al. in "Comparison of TiO 2 powder suspensions and TiO 2 ceramic membranes supported on glass as photocatalytic systems in the reduction of chromium (VI)” (J Mol Catal, 1992, 71(1): 57.) and Byrne J A, Eggins B R, Brown N M D, McKinney B, Rouse M. et al. "Immobilization of TiO 2 powder for the treatment of polluted water" (ApplCatal B, 1998, 17(122): 25.) pointed out that the loading process makes TiO 2 The photocatalytic activity of the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Photocatalyst for treating waste water containing phenol and its preparation method
  • Photocatalyst for treating waste water containing phenol and its preparation method
  • Photocatalyst for treating waste water containing phenol and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Weigh 0.3 g of pre-synthesized VSB-1, and its X-ray diffraction is shown in FIG. 1 . The pore size distribution is 0.9-1.2nm. Added to the dry n-hexane solution containing n-butyl titanate, the resulting mixture was 2 Stir and reflux under protection for 24 hours, and the reaction temperature is 343K. The precipitate obtained after centrifugation was fully washed with dry anhydrous n-hexane solution to remove the butyl titanate that did not enter the micropores of nickel phosphate; the obtained solid was hydrolyzed by adding deionized water (Figure 3), and dried at 313K for 12 hours ; The dried solid product was roasted at 773K for 3 hours to obtain a brownish-yellow photocatalyst TiO 2 / VSB-1 (Figure 4), where TiO 2 The content is 1.23wt%. Weigh 0.2g of the photocatalyst TiO prepared above 2 / VSB-1 was added to a photocatalytic reaction vessel with 400ml of newly prepared phenol aqueous solution with a concentration of 50ppm, and the mixture was stirred...

Embodiment 2

[0026] Embodiment 2: Weigh and photocatalyst TiO 2 3 mg of pure amorphous TiO equivalent to the active ingredient in / VSB-1 2As a comparative experiment, it was added to 400ml of newly prepared aqueous phenol solution with a concentration of 50ppm. Reaction process and operation steps are with embodiment 1. When the reaction time was 2 hours, the degradation rate of phenol in the solution was only 36.54%. (Figure 5, curve b)

Embodiment 3

[0027] Embodiment 3: Weigh and photocatalyst TiO 2 3 mg of pure anatase TiO equivalent to the active component in / VSB-1 2 As a comparative experiment, it was added to 400ml of newly prepared aqueous phenol solution with a concentration of 50ppm. Reaction process and operation steps are with embodiment 2. When the reaction time was 2 hours, the degradation rate of phenol in the solution was only 16.80%. (Figure 5, curve c)

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

A photocatalyst for treating the sewage containing phenol is composed of the millipore nickel phosphate VSB-1 as carrier and TiO2 as active component. After it is proportionally mixed with said sewage in a photocatalytic reactor, the phenol can be degradated to harmless compound under the radiation of high-pressure Hg lamp.

Description

technical field [0001] The invention describes a photocatalyst for treating phenol-containing wastewater and a preparation method thereof. The phenol in the wastewater is converted into a harmless product through a photocatalytic reaction under the illumination of a high-pressure mercury lamp. It belongs to the field of photocatalyst. Background technique [0002] With the development of industry, water resources are increasingly polluted. How to purify the polluted water has become a key and difficult point in environmental protection work. In particular, phenolic compounds are widely used in wood preservation, metal rust prevention, insecticides and disinfectants. Phenol, commonly known as carbolic acid, is a colorless acicular or white massive crystal at room temperature. It is one of the important organic chemical raw materials and has a wide range of industrial uses. It is mainly used for the preparation of phenolic resin, bisphenol A, caprolactam, etc. These phenolic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J32/00B01J35/10C02F1/30
Inventor 高秋明王秀丽
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com