Method for treating organic pollutants through steel slag-oxalic acid photo Fenton

A technology of organic pollutants and organic dyes, applied in the field of steel slag-oxalic acid photo-Fenton treatment of organic pollutants, can solve the problems of no degradation of nitrobenzene, no photo-Fenton reaction, etc., and achieve the effect of great promotion value

Active Publication Date: 2013-03-27
苏州尼普环境科技有限公司
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method does not involve the photo-

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1: Photo Fenton degradation of methylene blue by steel slag

[0016] 1. Grind the steel slag to a particle size of 3.0mm-5.0mm, weigh 0.50g and place it in a 100mL beaker.

[0017] 2. Add 50 mL of methylene blue dye at a concentration of 5 mg / L to the beaker containing steel slag, and then add oxalic acid to make the concentration 1.0 mmol / L to obtain a mixed solution containing steel slag, oxalic acid and methylene blue dye.

[0018] 3. With a 300W UV-visible lamp as the light source, the decolorization rate of methylene blue reached 99% after 120 minutes of irradiation.

[0019] 4. Filter the steel slag and the fading reaction solution, then place the steel slag in a 100mL beaker, repeat steps 2 and 3, the steel slag can make the methylene blue fade continuously, and the fading rate of the methylene blue is all within 6 cycles. More than 90.

Example Embodiment

[0020] Example 2: Photo Fenton degradation of Congo red by steel slag

[0021] 1. Grind the steel slag to a particle size of 3.0mm-5.0mm, weigh 0.50g and place it in a 100mL beaker.

[0022] 2. Add 50 mL of Congo red dye with a concentration of 20 mg / L to the beaker containing steel slag, and then add oxalic acid to make the concentration 1.0 mmol / L to obtain a mixed solution containing steel slag, oxalic acid and Congo red dye.

[0023] 3. With a 300W UV-visible lamp as the light source, the decolorization rate of Congo red reached 97% after 120 minutes of irradiation.

[0024] 4. Filter the steel slag and the fading reaction solution, then put the steel slag in a 100mL beaker, repeat steps 2 and 3, the steel slag can make the Congo red fade continuously, cycle 6 times, the fading rate of the Congo red is 90.0% the above.

Example Embodiment

[0025] Example 3: Photo Fenton degradation of malachite green by steel slag

[0026] 1. Grind the steel slag to a particle size of 3.0mm-5.0mm, weigh 0.50g and place it in a 100mL beaker.

[0027] 2. Add 50 mL of malachite dye with a concentration of 5 mg / L to the beaker containing steel slag, and then add oxalic acid to make the concentration 1.0 mmol / L to obtain a mixed solution containing steel slag, oxalic acid and malachite dye.

[0028] 3. With a 300W UV-visible lamp as the light source, the decolorization rate of malachite green reached 98% after 60 minutes of irradiation.

[0029] 4. Filter the steel slag and the fading reaction solution, then place the steel slag in a 100mL beaker, repeat steps 2 and 3, the steel slag can continuously fade the malachite green, cycle 6 times, the fading rate of malachite green is all More than 96.0%.

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
Concentrationaaaaaaaaaa
Login to view more

Abstract

The present invention discloses a method for degradation of organic pollutant by using steel slag and photocatalysis, wherein the method is a method for treating organic pollutants through steel slag-oxalic acid photo Fenton. The method comprises: grinding steel slag to a certain particle size, placing the grinded steel slag in an oxalic acid solution with a certain concentration, placing an organic dye in a mixing system of the steel slag and the oxalic acid to form a reaction system of the steel slag, the oxalic acid and the organic dye, and placing the reaction system under an environment of sunlight or ultraviolet-visible light radiation to carry out photo Fenton degradation of the organic dye. The method has characteristics of simpleness, easy performing, low energy consumption, and easy generalization application, wherein the steel slag can be recycled.

Description

technical field [0001] The invention relates to the fields of water pollution treatment and steel scrap slag reuse, in particular to a steel slag-oxalic acid light-fenton method for treating organic pollutants. [0002] Background technique [0003] In 2010, the total output of crude steel in my country was 630 million tons, and the amount of steel slag discharged was about 15%. The annual output of steel slag in my country was nearly 100 million tons. The accumulation of these steel slags not only takes up a lot of land, but also pollutes the environment. How to use steel slag to turn environmental pollutants into useful resources is an urgent problem we need to solve. At present, my country's steel slag is mainly used in construction materials, agricultural micro-fertilizers, and recovery of heavy metals and phosphorus, and its utilization rate only accounts for 25% of the output of steel slag. There is also a large amount of steel slag that needs to find a way out. ...

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): C02F1/32C02F1/30C02F1/72
CPCY02W10/37
Inventor 刘守清邵强张毅
Owner 苏州尼普环境科技有限公司
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