Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for removing antimony through electrolytic reduction of electrodeposited copper modified carbon fiber felt electrode

A carbon fiber felt and electrodeposition technology, which is applied in the field of electrolytic reduction and antimony removal of electrodeposited copper-modified carbon fiber felt electrodes, and can solve the problems of insufficiency and low cost.

Active Publication Date: 2021-05-18
DALIAN RONGKE ENERGY STORAGE GRP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for removing antimony by electrolytic reduction of electrodeposited copper-modified carbon fiber felt electrodes, aiming at the fact that the existing methods for removing antimony cannot meet the requirements of strictly controlling the content of impurity element antimony in the process of extracting vanadium by hydrometallurgy. The antimony removal effect is good, and the antimony content in the solution can be reduced to less than 0.5mg / L; at the same time, the antimony removal method also has the characteristics of simple operation, fast speed, high efficiency and low cost

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 removing antimony through electrolytic reduction of electrodeposited copper modified carbon fiber felt electrode
  • Method for removing antimony through electrolytic reduction of electrodeposited copper modified carbon fiber felt electrode
  • Method for removing antimony through electrolytic reduction of electrodeposited copper modified carbon fiber felt electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of Copper Modified Carbon Fiber Felt Electrode

[0042] 1.1 Instrument

[0043] The electrolytic cell consists of figure 1 Shown: flow battery, the effective cross-section of the battery electrode is 48cm 2 Anode: iridium-plated titanium plate electrode; cathode: graphite plate is used as current collector 1, carbon fiber felt 2 is used as electrode; ion semi-permeable membrane 3.

[0044] DC power supply 4: PCS charge and discharge instrument

[0045] Water pump: magnetic circulation pump 5

[0046] 1.2 Electrolyte

[0047] Anolyte 6: ferrous ion solution, prepared by dissolving 10g iron filings in 500mL sulfuric acid solution (1+1), let stand for 10min, and take 100mL supernatant;

[0048] Catholyte 7: 12g / L copper sulfate solution, 100mL.

[0049] 1.3 Electrodeposition process

[0050]Turn on the cathode magnetic circulation pump and pump the cathode solution into the battery for circulation. After 20 minutes, stop the circulation of the negative e...

Embodiment 2

[0052] Antimony Removal by Electrochemical Reduction Using Copper Modified Carbon Fiber Felt Electrode—(1) Antimony Removal from Wastewater

[0053] 2.1 Pretreatment of antimony-containing aqueous solution

[0054] Pipette 200mL of antimony-containing aqueous solution, antimony content: 2.88mg / L. Add appropriate amount of solid sodium hydroxide to adjust the pH of the solution to 11. After heating to make the temperature of the solution reach 95°C, 0.4 g of solid sodium sulfide was added, and the reaction was stirred for 1 h.

[0055] 2.2 Electrolytic antimony removal using copper-modified carbon fiber felt electrodes:

[0056] Cathode electrode: the copper-modified carbon fiber felt electrode prepared in Example 1.

[0057] Anode electrode: iridium plated titanium plate.

[0058] Catholyte: Antimony-containing aqueous solution treated in step 2.1.

[0059] Anolyte: 1.0mol / L NaOH solution.

[0060] Power supply: PCS charge and discharge instrument.

[0061] Electrolytic...

Embodiment 3

[0066] Antimony Removal by Electrochemical Reduction Using Copper Modified Carbon Fiber Felt Electrode—(2) Antimony Removal by Hydrometallurgical Vanadium Extraction and Leach Solution

[0067] 3.1 Pretreatment of antimony vanadium leaching solution

[0068] Pipette 200mL vanadium leaching solution solution, antimony content: 3.18mg / L. Add appropriate amount of solid sodium hydroxide to adjust the pH of the solution to 12. After heating to make the temperature of the solution reach 91°C, 0.5 g of solid sodium sulfide was added, and the reaction was stirred for 1 h.

[0069] 3.2 Electrolytic antimony removal using copper-modified carbon fiber felt electrodes:

[0070] Cathode electrode: the copper-modified carbon fiber felt electrode prepared in Example 1.

[0071] Anode electrode: iridium plated titanium plate.

[0072] Catholyte: the antimony-containing aqueous solution disposed of in step 3.1.

[0073] Anolyte: 1.0mol / L NaOH solution.

[0074] Power supply: PCS charge ...

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 provides a method for removing antimony through electrolytic reduction of an electrodeposited copper modified carbon fiber felt electrode, and the method comprises the following steps of: adding sodium hydroxide to adjust an antimony-containing solution to strong alkalinity; adding sodium sulfide under a high temperature condition to enable antimony ions to form thioantimonate; depositing copper on the surface of a carbon felt by an electrochemical reduction method to prepare a copper modified carbon fiber felt electrode; and using the copper modified carbon fiber felt electrode toelectrochemically reduce thioantimonate in a solution into elemental antimony by adopting a constant current method, thus realizing separation from the solution, and reducing the content of antimony in the solution. The antimony removal method is good in effect, and the antimony content in the solution can be reduced to 0.2mg / L or below; meanwhile, the antimony removal method also has the characteristics of simple operation, high speed, high efficiency and low cost.

Description

technical field [0001] The invention relates to antimony-containing sewage treatment technology, in particular to a method for removing antimony by electrolytic reduction of an electrodeposited copper-modified carbon fiber felt electrode. Background technique [0002] On the one hand, with the rapid development of industry, the pollution of antimony to the environment has been valued by countries all over the world, and the removal of antimony in wastewater is a key issue in sewage treatment; on the other hand, the removal of antimony as an impurity element has also become a hydrometallurgical important topics in. Antimony-containing solutions from various leaching processes often contain other impurity elements, which complicates the process of removing antimony from the solution. So far, many methods for separating antimony have been disclosed, mainly including chemical precipitation, electrolysis, adsorption, ion exchange and so on. The chemical precipitation method is ...

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 Applications(China)
IPC IPC(8): C02F1/461C02F1/70C25D5/54
CPCC02F1/4676C25D5/54C02F2001/46142Y02E60/50
Inventor 曾繁武王隆菲陈小曼丁琳李茜周振扬
Owner DALIAN RONGKE ENERGY STORAGE GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com