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

Method for preparing ferrate by electric generating method and its special electrolytic bath

A technology of ferrate and electrolyzer, applied in electrolysis process, electrolysis components, cells, etc., can solve the problems of uneven distribution of surface current and low utilization rate of flat electrode surface

Inactive Publication Date: 2007-01-24
FUJIAN NORMAL UNIV
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to overcome the problems of low utilization rate of flat electrode surface and uneven distribution of surface current, the present invention adopts a concentric cylindrical electrolytic cell structure, double diaphragms, one anode corresponds to two inner and outer cathodes, and the Ag / AgCl electrode is used as a reference electrode to measure the anode potential

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 preparing ferrate by electric generating method and its special electrolytic bath
  • Method for preparing ferrate by electric generating method and its special electrolytic bath

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Design of special electrolytic cell

[0030] Using PVC material, the tank body of the electrolytic cell is made by injection molding. Its appearance is cylindrical, and the inner bottom surface is provided with 5 equidistant concentric circular grooves. The cathode rod 1, the inner diaphragm cylinder 2, the anode cylinder 3, the outer diaphragm cylinder 4, and the outer cathode cylinder 5 can be embedded in the grooves in sequence, and the electrolytic cell is naturally divided into two cathode chambers and two anode chambers. The inner cathode rod 1 is made of graphite material, and the outer cathode rod is made of stainless steel mesh. The anode is made of cylindrical gray cast iron (grade HT200). Due to the loose and porous structure of gray cast iron, it effectively provides a large specific surface area, and it contains Fe 3 C is conducive to the electrolysis of iron, and at the same time, there are uniform pores with a diameter of 4mm distributed on the surfa...

Embodiment 2

[0035] (1) Design of special electrolytic cell

[0036] The electrolytic cell structure is as described in Example 1.

[0037] (2) the method for preparing ferrate

[0038] When preparing ferrate, add 14mol / L KOH 515ml electrolyte, control the temperature of the electrolyte at 30°C, and connect 30mA / cm 2 The current density of 0.07mol / L was obtained by adding 35ml of 0.25%NaCl and electrolyzed for 6h. 2 FeO 4 .

Embodiment 3

[0040] (1) Design of special electrolytic cell

[0041] The electrolytic cell structure is as described in Example 1.

[0042] (2) the method for preparing ferrate

[0043] When preparing ferrate, add 14mol / L NaOH 480ml electrolyte, control the temperature of the electrolytic bath at 28°C, and connect 30mA / cm 2 The current density of 0.07mol / L was obtained by adding 25ml of 0.25% KCl and electrolyzing for 5h. 2 FeO 4 .

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 present invention relates to an electricity generation method to prepare ferrate method and special electrolytic bath. Said Electrolytic bath adopts double diaphragm twin cathode cylinder trough solid structure composed of cathode bar, internal partition film tube, anode tube, outside cylindrical diaphragm, outside cathode tube and trough solid outer cylinder, to form one anode corresponding inside and outside two cathodes, double diaphragm dividing electrolytic bath into two cathode chambers and two anode chambers..Said invention utilizes double diaphragm twin cathode cylinder trough solid electrolytic bath to prepare ferrate, adding NaOH or KOH electrolyte, controlling electrolytic bath liquid temperature range at 25-30 degree centigrade, current density 30 ma / cm 2, adding 0.1-0.25 per cent NaCl or KCl, electrolyzing for 4-6 hr to obtain 0.07 mol / L FeO 42-.Said structure can make anode inside and outside two surfaces being fully utilized, raising current efficiency and resultant concentration, suitable for preparing electrogenesis novel water treatment agent ferrate.

Description

technical field [0001] The invention relates to a method for preparing ferrate by an electrogeneration method and an electrolytic cell specially used for the preparation, belonging to the field of electrochemistry in the chemical industry. technical background [0002] Among the iron compounds that have been prepared so far, iron usually exists in the form of Fe(II) and Fe(III), but it can be oxidized to hexavalent iron under the action of strong oxidants. Ferrate is a +6-valent compound of iron, which is an oxo-acid salt of iron in the form of a high valence state, and its chemical formula is MxFeO 4) (M: alkali metal or alkaline earth metal). [0003] As a hexavalent compound of iron, ferrate is a strong oxidant. In acidic solution, its redox potential is as high as 2.2V, and in alkaline solution, its redox potential is 0.72V, which can effectively oxidize and degrade many industrial Organic matter in wastewater, Fe formed after reduction 3+ The hydrolysis product Fe(OH...

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): C25B1/00C25B9/00
Inventor 陈震陈日耀郑曦陈晓方熠
Owner FUJIAN NORMAL UNIV