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

Degradation method of tphp, biochar-inorganic mineral composite material and preparation method thereof

An inorganic mineral and biochar technology, applied in the fields of environmental protection and sewage treatment, can solve the problems of unfavorable wide-scale popularization and application, high price of cobalt materials, complicated preparation process, etc., and achieve stable treatment effect, low cost and wide material sources. Effect

Active Publication Date: 2022-03-25
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cobalt material used in this method is expensive and harmful to the environment. The material preparation process is complicated and the cost is high, which is not conducive to large-scale application

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
  • Degradation method of tphp, biochar-inorganic mineral composite material and preparation method thereof
  • Degradation method of tphp, biochar-inorganic mineral composite material and preparation method thereof
  • Degradation method of tphp, biochar-inorganic mineral composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see attached figure 1 , figure 2 , the N-doped biochar-inorganic mineral composite material for implementing the TPhP (triphenyl phosphate) degradation method provided in this example is a ball-milled modified Fe 2 O 3 One of @MBC or FeO(OH)@MBC, where MBC is an autogenous N-doped biochar, and it is associated with the inorganic mineral Fe 2 O 3 Or FeO(OH) powder was modified by simultaneous ball milling.

[0053] see figure 1 , the Fe 2 O 3 The microstructural characteristics of the @MBC (or FeO(OH)@MBC) materials change significantly compared with the traditional biochar materials. In the process of preparing biochar-inorganic minerals by ball milling, the original carbon skeleton structure of biochar is broken, so that the particle size of biochar becomes smaller and has an irregular flaky fragment structure. During the process, more active sites can be exposed. Inorganic Mineral Fe 2 O 3 Or FeO(OH) is bound to the surface of the biochar fragment structu...

Embodiment 2

[0074] This example is a specific application of the technical solution provided in Example 1, and the focus is to prepare various autogenous N-doped biochar MBCs obtained at different pyrolysis temperatures, and further prepare them as Fe 2 O 3 @MBC or FeO(OH)@MBC composite materials, and the properties and parameters (degradation time, degradation rate, maximum degradation rate, change trend, etc.) of various materials for catalyzing, activating PDS, adsorbing, and degrading TPhP were measured respectively.

Embodiment 2-A

[0076] On the basis of the preparation method and preparation conditions of the composite material described in Example 1, the addition ratio of biochar and inorganic minerals (mass ratio of biochar to inorganic minerals) using secondary pyrolysis at 350°C was selected as 1:2, and the ratio of ball milling was 1:2. 1:100, the speed of ball-milling modification is 500r / min, and the duration of ball-milling modification is 12h. 2 O 3 Both @MBC and FeO(OH)@MBC were used as activators, and the degradation performance was determined.

[0077] To the TPhP sample solution with a measured concentration of 3.26 mg / L, a certain amount of biochar prepared with a secondary pyrolysis temperature of 350 °C, its and inorganic minerals (Fe) were added. 2 O 3 , FeO(OH)) was added at a mass ratio of 1:2, the mass ratio of the composite material to the grinding ball was 1:100 during the ball milling modification, the speed of the ball mill was 500r / min, and the cumulative time of ball milling ...

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

No PUM Login to View More

Abstract

The invention discloses a TPhP degradation method, a biochar-inorganic mineral composite material and a preparation method thereof, wherein the TPhP degradation method comprises the following steps: S1: preparing N-doped biochar-inorganic mineral composite material; S2: Measure the concentration of TPhP in the sewage and the degradation rate of the prepared composite material, and calculate the amount of the composite material required for degradation; S3: Add PDS to the sewage water body, adjust its concentration to a predetermined value, and add the composite Stir or vibrate the material for 4-8 hours to make the composite material catalyze and activate PDS, absorb and degrade TPhP in the water body; S4: measure the concentration of TPhP in the treated water body, and repeat steps S2-S3 if it does not meet the standard , until the target is reached. The invention also provides a biochar-inorganic mineral composite material and a preparation method thereof. The method and material provided by the invention have simple process, wide sources, environmental friendliness, high efficiency and low cost, and can meet the needs of wide-scale popularization and application.

Description

technical field [0001] The invention belongs to the technical fields of sewage treatment and environmental protection, and in particular relates to a method for degrading TPhP in a water body, a biochar-inorganic mineral composite material and a preparation method thereof. Background technique [0002] As an important member of phosphorus-based flame retardants, organic phosphates (OPEs) are being widely used in production practice instead of brominated flame retardants. In the process of production, processing and product use, such substances will enter various environmental media in various forms, become environmental pollutants, and pose potential threats to ecology and human health. Studies have pointed out that OPEs have biological toxicity such as carcinogenicity, mutagenicity, neurotoxicity and genotoxicity. In order to avoid and reduce the health risks of OPEs, in addition to controlling the emission of OPEs from the source, it is particularly important to completel...

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): C02F1/72C02F101/34C02F101/30
CPCC02F1/725C02F2101/34C02F2101/30
Inventor 于云江常兆峰钟紫娟郭浩博向明灯李红艳
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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