CN112320898A - Flaky iron-carbon micro-electrolysis filler and preparation method thereof - Google Patents
Flaky iron-carbon micro-electrolysis filler and preparation method thereof Download PDFInfo
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- CN112320898A CN112320898A CN202011072554.4A CN202011072554A CN112320898A CN 112320898 A CN112320898 A CN 112320898A CN 202011072554 A CN202011072554 A CN 202011072554A CN 112320898 A CN112320898 A CN 112320898A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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Abstract
The invention provides a flaky iron-carbon micro-electrolysis filler material which comprises iron powder, activated carbon, a binder, a catalyst and a pore-forming agent, wherein the components comprise the following components in percentage by mass based on the total mass of the iron-carbon micro-electrolysis filler: iron powder: 30-60%, active carbon: 20-50%, binder: 10-30%, catalyst 1-5%, pore-forming agent: 1 to 5 percent. The invention uses cordierite as adhesive, polyvinyl butyral as pore-forming agent, cerium oxide or lead oxide as catalyst and nitrogen-containing hydrogen atmosphere to obtain stable sheet-shaped porous iron-carbon micro-electrolysis filler, which has strong mechanical property and a large amount of microporous structures, increases contact area, strengthens reaction process, improves reaction efficiency and obviously improves the problem of hardening and blocking of common materials.
Description
Technical Field
The invention belongs to the technical field of environmental engineering materials, and particularly relates to a flaky iron-carbon micro-electrolysis filler and a preparation method thereof.
Background
Along with the rapid development of industrial production in China, the discharge amount of refractory industrial wastewater with great harm is increasing day by day, and a large amount of refractory organic matters exist in the industrial wastewater and are not easy to remove, which is also one of the most main challenges and problems in the current water treatment research. Chemical wastewater, printing and dyeing wastewater, coking wastewater, pesticide wastewater, pharmaceutical wastewater and papermaking wastewater, and the wastewater with complex components contains a large amount of refractory organic matters, so that the biodegradability of the wastewater is low, and the activated sludge process for treating domestic sewage is difficult to effectively degrade the wastewater.
The micro-electrolysis process is a process for treating wastewater by forming a galvanic cell on the principle of metal corrosion. The method forms the primary battery degradation pollutant by utilizing the potential difference between Fe and C, and has the advantages of high efficiency, low cost, simple treatment process and the like. At present, the method is generally applied to degradation of various industrial wastewater such as printing and dyeing, chemical industry, pharmacy, electroplating and coking and the like. The conventional microelectrolysis industry, however, also suffers from a number of deficiencies. After a certain reaction time, a large amount of precipitate can be deposited on the anode iron bed, which affects the contact of the electrode material with the wastewater and thus the treatment result. And the scrap iron is easy to form hardening, and phenomena such as channeling, short flow and the like are formed, so that the effect of treating the wastewater is reduced.
Aiming at typical wastewater printing and dyeing and pharmaceutical wastewater in refractory industrial wastewater, iron-carbon micro-electrolysis is one of effective pretreatment methods, and the research value in practical application is increasing day by day.
Disclosure of Invention
The invention aims to provide a flaky iron-carbon micro-electrolysis filler and a preparation method thereof.
The invention provides a flaky iron-carbon micro-electrolysis filler material which comprises iron powder, activated carbon, a binder, a catalyst and a pore-forming agent, wherein the components comprise the following components in percentage by mass based on the total mass of the iron-carbon micro-electrolysis filler: iron powder: 30-60%, active carbon: 20-50%, binder: 10-30%, catalyst 1-5%, pore-forming agent: 1 to 5 percent.
Further, the binder is cordierite.
Further, the catalyst is cerium oxide or lead oxide.
Further, the pore-forming agent is polyvinyl butyral.
The flaky iron-carbon micro-electrolysis filler and the preparation method thereof comprise the following steps:
a) preparation of iron-carbon micro-electrolysis filler powder material
Adding the iron powder, the activated carbon, the binder, the catalyst, the pore-forming agent and the like into distilled water according to the corresponding proportion, uniformly mixing and granulating, punching into a sheet shape, and drying at the temperature of 105-130 ℃ to obtain a sheet blank.
b) And (3) placing the sheet blank into a crucible, placing the crucible into a high-temperature muffle furnace, raising the room temperature to 1150-1400 ℃ at a heating rate of 5-10 ℃/min, treating the blank for 1-10 hours in a nitrogen-containing hydrogen atmosphere, and naturally cooling the blank to room temperature to obtain the spherical porous iron-carbon micro-electrolysis filler material.
The invention has the following main characteristics:
(1) the method comprises the following steps of (1) obtaining stable flaky porous iron-carbon micro-electrolysis filler by using cordierite as a binder, polyvinyl butyral (PVB) as a pore-forming agent, cerium oxide or lead oxide as a catalyst and nitrogen-containing hydrogen atmosphere, wherein the filler has strong mechanical properties and a large number of microporous structures, so that the contact area is increased, the reaction process is strengthened, the reaction efficiency is improved, and the hardening and blocking problems of common materials are remarkably improved;
(2) the preparation method has the advantages of good and simple process performance and easy control of product quality. Can be used for various industrial wastewater treatment parts.
Detailed Description
Example 1
The flaky iron-carbon micro-electrolysis filler consists of 45 wt% of iron powder, 35% of activated carbon, 12% of cordierite, 4% of cerium oxide and 4% of polyvinyl butyral (PVB) and is prepared by the following method:
b) preparation of flaky iron-carbon micro-electrolysis filler powder material
According to the mixture ratio of the first embodiment, iron powder, activated carbon, cordierite, cerium oxide, polyvinyl butyral (PVB) and the like are added into distilled water, uniformly mixed, granulated, stamped into a sheet shape, and dried at 110 ℃ to obtain a sheet blank.
b) And (3) placing the sheet blank into a crucible, placing the crucible into a high-temperature muffle furnace, raising the room temperature to 1250 ℃ at a heating rate of 5-10 ℃/min, treating the blank for 3 hours in a nitrogen-containing hydrogen atmosphere, and naturally cooling the blank to room temperature to obtain the sheet porous iron-carbon micro-electrolysis filler material.
Example 2
The flaky iron-carbon micro-electrolysis filler consists of 50 wt% of iron powder, 35% of activated carbon, 14% of cordierite, 2% of cerium oxide and 4% of polyvinyl butyral (PVB) and is prepared by the following method:
c) preparation of flaky iron-carbon micro-electrolysis filler powder material
According to the mixture ratio of the first embodiment, iron powder, activated carbon, cordierite, cerium oxide, polyvinyl butyral (PVB) and the like are added into distilled water, uniformly mixed, granulated, stamped into a sheet shape, and dried at 120 ℃ to obtain a sheet blank.
b) And (3) placing the sheet blank into a crucible, placing the crucible into a high-temperature muffle furnace, heating the temperature to 1350 ℃ at the heating rate of 5-10 ℃/min at the room temperature, treating the sheet blank for 4 hours in a nitrogen-containing hydrogen atmosphere, and naturally cooling the sheet blank to the room temperature to obtain the sheet porous iron-carbon micro-electrolysis filler material.
Example 3
The flaky iron-carbon micro-electrolysis filler consists of 45 wt% of iron powder, 30% of activated carbon, 15% of cordierite, 5% of lead oxide and 5% of polyvinyl butyral (PVB) and is prepared by the following method:
d) preparation of flaky iron-carbon micro-electrolysis filler powder material
According to the mixture ratio of the first embodiment, iron powder, activated carbon, cordierite, cerium oxide, polyvinyl butyral (PVB) and the like are added into distilled water, uniformly mixed, granulated, punched into a sheet shape, and dried at 130 ℃ to obtain a sheet blank.
b) And (3) placing the sheet blank into a crucible, placing the crucible into a high-temperature muffle furnace, heating the temperature to 1300 ℃ at the room temperature at the heating rate of 5-10 ℃/min, treating the sheet blank for 4 hours in a nitrogen-containing hydrogen atmosphere, and naturally cooling the sheet blank to the room temperature to obtain the sheet porous iron-carbon micro-electrolysis filler material.
Example 4
The flaky iron-carbon micro-electrolysis filler consists of 40 wt% of iron powder, 40% of activated carbon, 15% of cordierite, 2% of cerium oxide and 3% of polyvinyl butyral (PVB) and is prepared by the following method:
e) preparation of flaky iron-carbon micro-electrolysis filler powder material
According to the mixture ratio of the first embodiment, iron powder, activated carbon, cordierite, cerium oxide, polyvinyl butyral (PVB) and the like are added into distilled water, uniformly mixed, granulated, stamped into a sheet shape, and dried at 125 ℃ to obtain a sheet blank.
b) And (3) placing the sheet blank into a crucible, placing the crucible into a high-temperature muffle furnace, raising the room temperature to 1250 ℃ at a heating rate of 5-10 ℃/min, treating the blank for 6 hours in a nitrogen-containing hydrogen atmosphere, and naturally cooling the blank to room temperature to obtain the sheet porous iron-carbon micro-electrolysis filler material.
Claims (5)
1. A flaky iron-carbon micro-electrolysis filler and a preparation method thereof comprise the following components in percentage by mass: iron powder: 20-50%, activated carbon: 20-50%, binder: 10-30%, catalyst 1-5%, pore-forming agent: 1-5 percent, and the components take the total mass of the iron-carbon micro-electrolysis filler as the reference.
2. The flaky iron-carbon micro-electrolytic filler according to claim 1, characterized in that: the binder is cordierite.
3. The flaky iron-carbon micro-electrolytic filler according to claim 1, characterized in that: the catalyst is cerium oxide or lead oxide.
4. The flaky iron-carbon micro-electrolytic filler according to claim 1, characterized in that: the pore-forming agent is polyvinyl butyral.
5. The flaky iron-carbon micro-electrolysis filler and the preparation method thereof according to claim 1 are characterized by comprising the following steps of:
a) adding iron powder, activated carbon, a binder, a catalyst, a pore-forming agent and the like into distilled water, uniformly mixing, granulating, punching into a sheet shape, and drying at the temperature of 105-;
b) and (3) placing the sheet blank into a crucible, placing the crucible into a high-temperature muffle furnace, heating the crucible to 1050-1400 ℃ at the room temperature at the heating rate of 5-10 ℃/min, treating the crucible for 1-10 hours in a nitrogen-containing hydrogen atmosphere, and naturally cooling the crucible to the room temperature to obtain the sheet porous iron-carbon micro-electrolysis filler material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072554.4A CN112320898A (en) | 2020-10-09 | 2020-10-09 | Flaky iron-carbon micro-electrolysis filler and preparation method thereof |
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| CN202011072554.4A CN112320898A (en) | 2020-10-09 | 2020-10-09 | Flaky iron-carbon micro-electrolysis filler and preparation method thereof |
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| CN112320898A true CN112320898A (en) | 2021-02-05 |
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| CN202011072554.4A Pending CN112320898A (en) | 2020-10-09 | 2020-10-09 | Flaky iron-carbon micro-electrolysis filler and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973604A (en) * | 2016-10-24 | 2018-05-01 | 日本碍子株式会社 | The manufacture method of porous material, honeycomb structured body and porous material |
| CN107986399A (en) * | 2017-11-16 | 2018-05-04 | 浙江海洋大学 | A kind of iron-carbon micro-electrolysis filler and preparation method thereof |
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2020
- 2020-10-09 CN CN202011072554.4A patent/CN112320898A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973604A (en) * | 2016-10-24 | 2018-05-01 | 日本碍子株式会社 | The manufacture method of porous material, honeycomb structured body and porous material |
| CN107986399A (en) * | 2017-11-16 | 2018-05-04 | 浙江海洋大学 | A kind of iron-carbon micro-electrolysis filler and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王罗春等: "《农村农药污染及防治》", 31 January 2019, 北京：冶金工业出版社 * |
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Application publication date: 20210205 |