Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for breaking nickel-containing complexes by advanced oxidation involving persulfate and catalytic ceramsite

A technology of persulfate and nickel complexes is applied in the field of advanced oxidation to remove nickel-containing complexes, which can solve the problems of high cost, secondary sludge and high tax rate, and achieve cost saving, high mechanical strength and high catalytic efficiency. Effect

Active Publication Date: 2021-02-19
SOUTH CHINA AGRI UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the Fenton reaction is mainly used for the treatment of wastewater containing complexed nickel. After the reaction, a large amount of iron sludge containing heavy metals will be produced, and the catalyst cannot be reused, and the cost is high. On the other hand, the produced iron sludge containing heavy metals will cause secondary sludge. , the implementation of the environmental protection tax in 2018, the iron sludge produced by the electroplating industry, etc. is a hazardous waste, and the tax rate is relatively high. For electroplating enterprises, there is a strong demand for cheap and effective treatment processes

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
  • A method for breaking nickel-containing complexes by advanced oxidation involving persulfate and catalytic ceramsite
  • A method for breaking nickel-containing complexes by advanced oxidation involving persulfate and catalytic ceramsite
  • A method for breaking nickel-containing complexes by advanced oxidation involving persulfate and catalytic ceramsite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Preparation of catalytic ceramsite, the process is as follows:

[0033] (1) Ceramsite pretreatment: Take some ceramsite, put it into 0.1-0.5mol / L dilute nitric acid solution, heat and boil for 0.5h to remove the residue on the surface of ceramsite, rinse it with distilled water several times after cooling, and place Dry in an oven at a constant temperature of 105°C for 1 hour, take it out and cool it for later use.

[0034] (2) Preparation of ceramsite-supported catalytic oxidation material: take manganese nitrate, nickel nitrate, and iron nitrate, and prepare a mixed aqueous solution according to the ratio of substances of 4:1:1, wherein the total molar concentration of mixed metal ions is 0.5-1.0mol / L , Weigh the pretreated ceramsite and add it into the mixed solution, stir for 1 hour, and adjust the pH of the solution to 7-8 with ammonia water during the stirring process. Let it stand for 2 hours, take it out and dry it for 2 hours, put it in an iron box, pl...

Embodiment 2

[0052] Step 1: Preparation of catalytic ceramsite, the process is as follows:

[0053](1) Ceramsite pretreatment: Take some ceramsite, put it into 0.1-0.5mol / L dilute nitric acid solution, heat and boil for 0.5h to remove the residue on the surface of ceramsite, rinse it with distilled water several times after cooling, and place Dry in an oven at a constant temperature of 105°C for 1 hour, take it out and cool it for later use.

[0054] (2) Preparation of ceramsite-supported catalytic oxidation materials: take manganese nitrate, nickel nitrate, and iron nitrate, and prepare a mixed aqueous solution according to the ratio of substance to substance at 4:1:1, wherein the total molar concentration of mixed metal ions is 0.5-1.0mol / L, weigh the pretreated ceramsite and add it to the mixed solution, stir for 1 hour, and adjust the pH of the solution to 7-8 with ammonia water during the stirring process. Let it stand for 2 hours, take it out and dry it for 2 hours, put it in an ir...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of industrial nickel-containing sewage treatment, and discloses a method for breaking nickel-containing complexes through advanced oxidation involving persulfate and catalytic ceramsite. The present invention prepares the catalytic ceramsite by loading a certain proportion of transition metals such as iron, manganese and nickel in the ceramsite, then adds hydrogen persulfate and catalytic ceramsite into the nickel-containing wastewater, stirs for a certain period of time, adjusts the pH to 10, and statically After a certain period of time, a considerable effect of breaking the nickel-containing complex can be achieved. The present invention can well replace the traditional Fenton reaction to break the complex, and is used to treat complexed heavy metals in electroplating wastewater. The combination of existing processes can better remove heavy metals in wastewater.

Description

technical field [0001] The invention belongs to the field of industrial nickel-containing sewage treatment, in particular to a method for breaking nickel-containing complexes through advanced oxidation involving persulfate and catalytic ceramsite. Background technique [0002] The electroplating industry will produce a large amount of nickel-plating rinsing wastewater. The nickel in the wastewater mainly exists in the form of nickel sulfate, nickel chloride and complexed nickel. Nickel belongs to the first category of pollutants, and its excessive discharge will cause serious pollution to the environment. The high concentration of non-complexed nickel in electroplating wastewater is easier to remove, while the complexed nickel is difficult to remove by chemical precipitation, so the complex must be broken first, and then the non-complexed nickel can be removed by chemical precipitation. [0003] At present, the Fenton reaction is mainly used for the treatment of wastewater c...

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): C02F9/04
CPCC02F1/444C02F1/66C02F1/725C02F9/00
Inventor 黄柱坚叶家而张力吴思颖梁健铭张雅婷
Owner SOUTH CHINA AGRI UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com