Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of method utilizing low-temperature plasma technology to prepare potassium ferrate

A technology of low-temperature plasma and potassium ferrate, applied in chemical instruments and methods, iron compounds, water/sludge/sewage treatment, etc., can solve problems such as danger, complicated preparation process, and low efficiency, and achieve strong adsorption, The effect of simple preparation process

Active Publication Date: 2022-06-14
CHANGSHU INSTITUTE OF TECHNOLOGY
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of potassium ferrate mainly include dry method and wet method. The preparation process not only needs to use oxidant (sodium hypochlorite and sodium oxide), but also needs to set up a saturated alkali washing replacement process, and ferric iron is converted into hexavalent iron salt. The efficiency is low, the preparation process is complicated and dangerous

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 kind of method utilizing low-temperature plasma technology to prepare potassium ferrate
  • A kind of method utilizing low-temperature plasma technology to prepare potassium ferrate
  • A kind of method utilizing low-temperature plasma technology to prepare potassium ferrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Effect of aqueous potassium hydroxide concentration on iron conversion and performance of prepared potassium perferrate

[0020] Preparation of potassium perferrate: as Figure 1 As shown, the ferric chloride is called dissolved in water, an aqueous solution of 1mol / L of ferric chloride is prepared, and the aqueous iron chloride solution is placed in a low-temperature plasma reaction cell ( Figure 2 ), the aeration plate at the bottom of the reaction tank is exposed to oxygen, and then the power supply is turned on for low-temperature plasma irradiation for 0.5 hours to obtain a ferric chloride activation solution, wherein the low-temperature plasma acting voltage is 5kV; call potassium hydroxide dissolved in water, respectively, prepare 0.25, 0.35, 0.45, 0.5, 2.5, 4.5, 5, 5.5, 6mol / L potassium hydroxide aqueous solution, according to the volume ratio of potassium hydroxide aqueous solution to ferroclorine activation solution is 1:1, the aqueous potassium hydroxide solution...

Embodiment 2

[0038] Effect of aqueous iron chloride concentration on iron conversion and the performance of prepared potassium perferrate

[0039] Preparation of potassium perferrate: weigh iron chloride dissolved in water, prepare 0.5, 0.7, 0.9, 1, 3, 5, 5.5, 6.5, 7.5mol / L aqueous iron chloride solution, the aqueous iron chloride solution is placed in a low-temperature plasma reaction cell, and the aeration plate at the bottom of the reaction tank is exposed to oxygen. Then turn on the power supply for low-temperature plasma irradiation for 1.5 hours to obtain ferrocrylate activation solution, of which the low-temperature plasma acting voltage is 27.5kV; call potassium hydroxide dissolved in water, prepare 4.5mol / L aqueous potassium hydroxide solution, according to the volume ratio of potassium hydroxide aqueous solution and ferroclorine activation solution is 2:1, the aqueous potassium hydroxide solution is mixed with ferric chloride activation solution, stirred evenly, and the alkali-excit...

Embodiment 3

[0048] The volume ratio of aqueous potassium hydroxide solution to ferrochlorinated solution affected the iron conversion rate and the performance of the prepared potassium perferrate

[0049]Preparation of potassium perferrate: weigh iron chloride dissolved in water, prepare 5mol / L aqueous iron chloride solution, place the aqueous iron chloride solution in a low-temperature plasma reaction tank, the aeration plate at the bottom of the reaction tank is exposed to oxygen, and then turn on the power supply for low-temperature plasma irradiation for 2.5 hours to obtain a ferroclorine activation solution, where the low-temperature plasma action voltage is 50kV; weigh potassium hydroxide dissolved in water, prepare 4.5mol / L potassium hydroxide aqueous solution, According to the volume ratio of potassium hydroxide aqueous solution to ferroclorine activation solution 0.5:1, 0.7:1, 0.9:1, 1:1, 2:1, 3:1, 3.2:1, 3.5:1, 4:1, respectively, the aqueous potassium hydroxide solution was mixed wi...

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 potassium ferrate by using low-temperature plasma technology, which comprises the following steps: (1) irradiating ferric chloride aqueous solution with low-temperature plasma to obtain ferric chloride activation solution; (2) oxidizing hydrogen Potassium aqueous solution and ferric chloride activation solution are uniformly mixed to obtain alkali-stimulated ferric chloride activated slurry; (3) low-temperature plasma irradiation treatment is performed on the alkali-stimulated ferric chloride activated slurry to obtain potassium ferrate slurry, which is then dried to obtain potassium ferrate. The preparation process of the present invention is simple, no oxidizing agent is used, and the iron conversion rate can reach up to 97%; the prepared potassium ferrate has strong adsorption, and the pH range is wide (1-13), and the maximum can remove 98% of landfill leachate. %COD, 99% phosphorus, 99% ammonia nitrogen, 99% lead.

Description

Technical field [0001] The present invention relates to a method for preparing potassium perferrate, in particular to a method of preparing potassium perferrate using low-temperature plasma technology. Background [0002] Landfill leachate contains both organic pollutants and inorganic pollutants such as heavy metals, ammonia nitrogen, phosphorus and other inorganic pollutants, which will cause serious pollution to the surrounding water and soil and disrupt the ecological balance. Flocculation coagulation technology is widely used in the disposal or purification of high-concentration contaminated water bodies due to its simple operation and remarkable effect. Conventional coagulants remove some contaminants from landfill leachate, but are less efficient at capturing organic matter and heavy metals and are sensitive to disposal environments, with a narrow pH range. [0003] Potassium perferrate integrates oxidant and flocculant as one, has strong oxidation and its reducing product...

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): C01G49/00C02F1/28
CPCC01G49/00C02F1/281
Inventor 黄涛杜晶宋东平张树文金俊勋周璐璐刘龙飞徐娇娇
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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