Method for preparing geopolymer photocatalyst from municipal solid waste incineration fly ash

A technology for municipal solid waste and geopolymers, applied in physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve problems such as difficult synchronous removal, restrictions on commercialization of photocatalytic technology, etc., to achieve preparation The effect of simple process and wide source of preparation raw materials

Pending Publication Date: 2020-08-25
CHANGSHU INSTITUTE OF TECHNOLOGY
View PDF7 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current photocatalysts have high requirements on the quality of catalyst raw materials, which limits the commercialization of photocatalytic technology.
At the same t

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
  • Method for preparing geopolymer photocatalyst from municipal solid waste incineration fly ash
  • Method for preparing geopolymer photocatalyst from municipal solid waste incineration fly ash
  • Method for preparing geopolymer photocatalyst from municipal solid waste incineration fly ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 Influence of the Mass Ratio of Graphite Powder and Municipal Solid Waste Incineration Fly Ash on the Performance of the Prepared Geopolymer Photocatalyst

[0029] According to the mass ratio of graphite powder to municipal solid waste incineration fly ash 2.5:100, 3:100, 4:100, 5:100, 10:100, 15:100, 16:100, 17:100, 17.5:100 Graphite powder and municipal solid waste incineration fly ash are mixed to obtain nine groups of carbon-doped municipal solid waste incineration fly ash. According to the mass ratio of silica fume and aluminum ash of 1:1, respectively weigh silica fume and aluminum ash, and mix them to obtain a silica-alumina additive. Weigh molybdenite powder, silicon-aluminum additive, carbon-doped municipal solid waste incineration fly ash respectively according to the mass ratio of molybdenite powder, silicon-aluminum additive, and carbon-doped municipal solid waste incineration fly ash 2: 20: 100, and mix to obtain nine group of catalyst precursor m...

Embodiment 2

[0043] Embodiment 2 Silica fume and aluminum ash mass ratio influence on the performance of the prepared geopolymer photocatalyst

[0044] According to the mass ratio of graphite powder and municipal solid waste incineration fly ash of 15:100, graphite powder and municipal solid waste incineration fly ash were weighed and mixed to obtain carbon-doped municipal solid waste incineration fly ash. Weigh silica fume and aluminum respectively according to the mass ratio of silica fume to aluminum dust: 0.5:1, 0.7:1, 0.9:1, 1:1, 2:1, 3:1, 3.2:1, 3.4:1, 3.5:1 Ash, mixed to get nine groups of silicon-aluminum additives. Weigh molybdenite powder, silicon-aluminum additive, carbon-doped municipal solid waste incineration fly ash respectively according to the mass ratio of molybdenite powder, silicon-aluminum additive, and carbon-doped municipal solid waste incineration fly ash 3: 30: 100, and mix to obtain nine group of catalyst precursor materials. According to the liquid-solid ratio ...

Embodiment 3

[0049] Example 3 Influence of molybdenite powder, silicon-aluminum additive, and carbon-doped municipal solid waste incineration fly ash mass ratio on the performance of the prepared geopolymer photocatalyst

[0050] According to the mass ratio of graphite powder and municipal solid waste incineration fly ash of 15:100, graphite powder and municipal solid waste incineration fly ash were weighed and mixed to obtain carbon-doped municipal solid waste incineration fly ash. According to the mass ratio of silica fume and aluminum ash of 3:1, respectively weigh silica fume and aluminum ash and mix them to obtain a silica-alumina additive. According to the mass ratio of molybdenite powder, silicon-aluminum additive, and carbon-doped municipal solid waste incineration fly ash 2:5:100, 2:10:100, 2:15:100, 0.5:20:100, 1:20:100, 1.5:20:100, 2:20:100, 3:20:100, 4:20:100, 2:30:100, 3:30:100, 4:30:100, 2:40:100, 3: 40:100, 4:40:100, 4.5:40:100, 5:40:100, 5.5:40:100, 4:45:100, 4:50:100, 4:5...

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 method for preparing a geopolymer photocatalyst from municipal solid waste incineration fly ash. The method comprises the following steps of: weighing graphite powder and municipal solid waste incineration fly ash, and mixing the graphite powder and the municipal solid waste incineration fly ash to obtain carbon-doped municipal solid waste incineration fly ash; weighing silica fume and aluminum ash, and mixing the silica fume and aluminum ash to obtain a silica-alumina additive; weighing molybdenite powder, the silicon-aluminum additive and the carbon-doped municipalsolid waste incineration fly ash, and mixing the molybdenite powder, the silicon-aluminum additive and the carbon-doped municipal solid waste incineration fly ash to obtain a catalyst precursor material; weighing water and the catalyst precursor material, and performing low-temperature plasma irradiation to obtain photocatalyst slurry; and drying and grinding the photocatalyst slurry to obtain thegeopolymer photocatalyst. The invention also discloses a geopolymer photocatalyst and application thereof. According to the method, the stabilization of heavy metal and the mineralization of dioxin in the fly ash can be achieved, and part of the heavy metal can be converted into a semiconductor material. A molybdenum source and a carbon source are a low-value molybdenite raw material and graphitepowder respectively. The geopolymer photocatalyst can remove 98% of COD, 99% of heavy metal pollutants, 99% of ammonia nitrogen and 98% of total phosphorus at most.

Description

technical field [0001] The invention relates to the technical field of harmless disposal and resource utilization of municipal solid waste incineration fly ash, in particular to a method for preparing a geopolymer photocatalyst by using municipal solid waste incineration fly ash. Background technique [0002] Discharge of dye wastewater into the environment without proper treatment poses a potential threat to ecosystems and human health. The current treatment methods for dye wastewater include adsorption, enzyme treatment, membrane separation, and photocatalytic degradation. Among them, photocatalytic degradation is favored due to its high efficiency and environmental friendliness. In the process of photocatalysis, when the semiconductor composite material (photocatalyst) is irradiated with light, some strong active free radicals are generated on the surface of the material, and these active free radicals can degrade the macromolecules of organic dyes in the solution into n...

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
IPC IPC(8): B01J27/19B01J37/04B01J37/34B01J37/08C02F1/72C02F1/32C02F101/10C02F101/16C02F101/20C02F101/30C02F103/06
CPCB01J27/19B01J35/004B01J37/0036B01J37/04B01J37/08B01J37/349C02F1/32C02F1/725C02F2101/105C02F2101/16C02F2101/20C02F2101/30C02F2103/06
Inventor 黄涛金俊勋仲小艺徐颖宋东平张树文刘龙飞周璐璐
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap