Three-dimensional Electrode for Removing Iron Ions from Sulfuric Acid Solution by Electrochemical Deposition

A sulfuric acid solution, electrochemical technology, applied in the direction of sulfur trioxide/sulfuric acid, electrodes, optics, etc., can solve the problems that affect the rate of the reaction process, iron removal process efficiency, hydrogen evolution side reaction, etc., to achieve effective removal and mass transfer rate High, the effect of improving speed and current efficiency

Active Publication Date: 2021-03-09
YANGZHOU UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to Fe 2+ At the cathode, it is reduced to Fe and deposited on the surface of the cathode, so that the process is actually carried out on the Fe electrode, causing the hydrogen evolution side reaction to occur at the cathode, which affects the rate of the reaction process and the efficiency of the iron removal process.

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
  • Three-dimensional Electrode for Removing Iron Ions from Sulfuric Acid Solution by Electrochemical Deposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] As shown in the attached figure, a three-dimensional electrode for removing iron ions in sulfuric acid solution by electrochemical deposition, especially a three-dimensional moving bed that uses metal particles with high hydrogen evolution overpotential as electrocatalytic material and whose surface can be renewed as a cathode An electrode characterized by the following:

[0037] (1) Cathode: composed of three-dimensional moving bed electrode, corrosion-resistant electrode substrate and electromagnet;

[0038] (2) Three-dimensional moving bed electrode: lead particles are used as the working electrode of the three-dimensional moving bed electrode. The equivalent diameter of the lead particle is 0.1 mm, and the bed thickness is 10.0 mm. At the lead / electrolyte interface, Fe 2+ An electrochemical reduction reaction occurs to generate Fe, which is deposited on the surface of the lead particles;

[0039] (3) Corrosion-resistant electrode substrate: lead is used as the corr...

Embodiment 2

[0044] As shown in the attached figure, a three-dimensional electrode for removing iron ions in sulfuric acid solution by electrochemical deposition, especially a three-dimensional moving bed that uses metal particles with high hydrogen evolution overpotential as electrocatalytic material and whose surface can be renewed as a cathode An electrode characterized by the following:

[0045] (1) Cathode: composed of three-dimensional moving bed electrode, corrosion-resistant electrode substrate and electromagnet;

[0046] (2) Three-dimensional moving bed electrode: Pb-Cd alloy particles with high hydrogen evolution overpotential are used as the working electrode of the three-dimensional moving bed electrode. The equivalent diameter of the alloy particles is 1.0 mm, and the bed thickness is 20.0 mm. Electrolyte interface, Fe 2+ An electrochemical reduction reaction occurs to generate Fe, which is deposited on the surface of the metal alloy particles;

[0047] (3) Corrosion-resista...

Embodiment 3

[0052] As shown in the attached figure, a three-dimensional electrode for removing iron ions in sulfuric acid solution by electrochemical deposition, especially a three-dimensional moving bed that uses metal particles with high hydrogen evolution overpotential as electrocatalytic material and whose surface can be renewed as a cathode An electrode characterized by the following:

[0053] (1) Cathode: composed of three-dimensional moving bed electrode, corrosion-resistant electrode substrate and electromagnet;

[0054] (2) Three-dimensional moving bed electrode: cadmium particles are used as the working electrode of the three-dimensional moving bed electrode. The equivalent diameter of the cadmium particles is 2.0 mm, and the bed thickness is 50.0 mm. 2+ Electrochemical reduction reaction occurs to generate Fe, which is deposited on the surface of cadmium particles;

[0055] (3) Corrosion-resistant electrode substrate: Metal cadmium on the surface of the electromagnet is used a...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a three-dimensional electrode for removing iron ions in sulfuric acid solution by electrochemical deposition, in particular to a three-dimensional moving bed electrode with metal particles with high hydrogen evolution overpotential as electrocatalytic materials. With this electrode as the cathode, the Fe 2+ Cathodic reduction produces iron that is deposited on the surface of the metal particles in the moving bed, and the formed iron moves to the corrosion-resistant electrode substrate under the magnetic force of the electromagnet, and at the same time, cathodic protection technology is used to protect the generated Fe from being corroded by sulfuric acid; Remove the sulfuric acid solution from the iron-operated three-dimensional moving bed electrode, turn off the electromagnet power supply, dissolve and remove the deposited iron with sulfuric acid solution, and regenerate the three-dimensional moving bed electrode for recycling. The three-dimensional moving bed electrode of the present invention has the remarkable characteristics of fast iron removal rate, high current efficiency, and easy continuous operation, which is convenient for large-scale industrialization. The electrode can be used in the field of metal ion separation and recovery and resource utilization, and is a green chemical industry Development of required electrode preparation techniques.

Description

technical field [0001] The invention relates to a three-dimensional electrode for removing iron ions in sulfuric acid solution by electrochemical deposition, in particular to a three-dimensional moving bed electrode ( Moving bed electrode) belongs to the technical field of electrode material preparation, metal ion separation and recovery, and resource utilization. Background technique [0002] 1. The importance of iron removal technology in sulfuric acid solution [0003] Remove iron ions (Fe 2+ or / and Fe 3+ ) is not only a common problem in the process of resource utilization of acidic solution, deep iron removal and decolorization of acidic solution, but also a common technical problem in the process of hydrometallurgy. Especially in R&D SO 2 A new technology coupling oxidation conversion to sulfuric acid and electrochemical reduction to produce hydrogen 2 Absorption conversion process, 201610523223.5] in the industrial implementation process, removal of Fe in sulfuri...

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): C25C7/08C25C7/02C25C1/06C01B17/90
CPCY02P10/20
Inventor 王雅琼李成贾全保丁苑琼许文林
Owner YANGZHOU UNIV
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