CN106673141A - Straw-based particle three-dimensional electrode filler and preparation method thereof - Google Patents
Straw-based particle three-dimensional electrode filler and preparation method thereof Download PDFInfo
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- CN106673141A CN106673141A CN201610989036.6A CN201610989036A CN106673141A CN 106673141 A CN106673141 A CN 106673141A CN 201610989036 A CN201610989036 A CN 201610989036A CN 106673141 A CN106673141 A CN 106673141A
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- straw
- dimensional electrode
- electrode filler
- base particle
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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
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a straw-based particle three-dimensional electrode filler and a preparation method thereof, wherein the straw-based particle three-dimensional electrode filler comprises 60-80 wt% of straw powder, 10-20 wt% of bentonite, 1-10 wt% of a binder, and 0.5-3 wt% of a composite catalyst. The invention further provides the preparation method of the straw-based particle three-dimensional electrode filler. According to the present invention, the straw-based particle three-dimensional electrode filler has advantages of large specific surface area, high catalytic activity, low unit COD energy consumption, less active component loss, long continuous service life, and the like.
Description
Technical field
The present invention relates to a kind of electrode filler, more particularly to a kind of straw base particle three-dimensional electrode filler and its preparation side
Method.
Background technology
With the development and the increase of world population of industrial or agricultural, life, the demand of industrial water and wastewater discharge are big
Width increases, the poisonous and harmful substance contained in waste water and hardly degraded organic substance is also on the rise to the pollution that water body is caused.For
The process of organic wastewater with difficult degradation thereby, people frequently with method mainly include extraction, absorption, chemical precipitation, coagulating sedimentation, film divide
From, electrochemical oxidation process and chemical oxidization method etc..In recent years, electrochemical techniques are paid high attention to, and become difficult degradation organic waste
One of most important research and development direction in water field.
Electrochemical catalytic oxidation water technology need not add chemical reagent, non-secondary pollution, reaction condition it is gentle, to many
Plant organic pollution oxidation effectiveness preferable.Electrochemical catalytic oxidation process can be divided into two kinds of direct oxidation and indirect oxidation.It is so-called
Direct oxidation refers to the process of that pollutant absorption in anode surface directly occurs electron transfer and oxidized, typically dense in pollutant
Occur when degree is higher；Indirect oxidation is referred to by some media in electrolyte, or produced using electrode surface
A little reactive intermediates are (such as OH, OCl-、H2O2、O3Deng) realizing the oxidative degradation of pollutant.
Gradually going deep into for electrochemical oxidation process research, finds traditional two-dimensional flat plate electrode reactor generally existing degraded effect
The low problem of rate.Problem for how to improve electrochemical degradation efficiency, research and report in recent years primarily focus on electrode
The optimization of structure, such as three-diemsnional electrode technology., there is face body than little, high energy consumption in traditional flat board two-dimensional electrode reaction system, secondary anti-
The problems such as answering many.Three-diemsnional electrode overcomes to a certain extent these shortcomings, three-diemsnional electrode also known as granule electrode or bed electrode, it
It is that granular or other clastic working electrode materials are loaded between original two-dimensional electrode, causes to load electrode material surface band
Electricity, becomes a new pole, i.e. the 3rd pole, and electrochemical reaction occurs in working electrode material surface energy.Due to its Area comparison greatly,
Larger current intensity can be provided with lower current densities, response speed is fast, and spacing is little between particle, and material mass transfer is able to pole
Big improvement, unit space-time yield and current efficiency are greatly improved.
The content of the invention
Defect in the presence of in order to overcome prior art, it is an object of the invention to provide a kind of specific surface area is big, catalysis
Active high, the low, active component of unit COD power consumption is not easily runed off, the straw base particle of continuous long service life, preparation process is simple
Three-diemsnional electrode filler and preparation method thereof.
To solve above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of straw base particle three-dimensional electrode filler of the present invention, it is characterised in that：The filler with straw as main base material, its composition
Composition also includes bentonite, binding agent and composite catalyst, and the straw mass percent is 60wt%-80wt%, bentonite
Mass percent is 10wt%-20wt%, and binding agent mass percent is 1 wt%-10wt%, and composite catalyst mass percent is
0.5 wt%-3wt%。
Further, described straw is first crushed with pulverizer, adopt aperture for 100 mesh sieve, obtain
Stalk powder.
Further, the binding agent is calcium lignosulfonate or sodium silicate.
Further, the straw base particle three-dimensional electrode filler is the spherical particle of diameter 5-12mm.
A kind of preparation method of straw base particle three-dimensional electrode filler of the present invention, it is characterised in that comprise the following steps：Press
Proportioning is straw 60wt%-80wt%, bentonite 10wt%-20wt%, binding agent 1-10wt%, composite catalyst 0.5-3wt%, is weighed
Straw and bentonite, add weighed binding agent and composite catalyst after mixing and stirring, stir, and are then pressed into
The spherical particle of diameter 5-12mm, drying and roasting.
Further, the composite catalyst is consisted of：Cerium 10-20wt%, titanium 3-5%, ferrum 30-50wt% and copper 20-
40wt%, each component percetage by weight sum is 100%.
Further, the addition form of ferrum is ferric nitrate or iron chloride, the addition form of copper in described composite catalyst
For copper nitrate or copper chloride, the addition form of cerium is ceria or cerous nitrate.
Further, described baking temperature when being dried is 95-130 °C, and drying time is 12-24h.
Further, stoving temperature is 500-1000 °C during described baking, and roasting time is 4-6h.
The invention has the beneficial effects as follows：A kind of straw base particle three-dimensional electrode filler of the present invention have specific surface area it is big,
Low, active component that catalysis activity is high, unit COD consumes energy is not easily runed off, continuous long service life, its preparation process is simple etc. are excellent
Point.
Specific embodiment
Example below elaborates to invention, and the embodiment for being provided is under the premise of it the technical scheme is that
Implemented, but protection scope of the present invention is not limited to following embodiments.
Embodiment 1：A kind of preparation method of straw base particle three-dimensional electrode filler of present embodiment, specifically according to following
What step was carried out：
1）Stalk pretreatment：By 80 DEG C of straw drying 6-12h, then crush, adopt aperture for 100 mesh sieve, obtain
Stalk powder；
2）It is prepared by composite catalyst：Iron chloride, copper chloride and ceria are taken, according to 50wt%, 45wt%, 5wt% weight percent
Number, mix homogeneously obtains composite catalyst；
3）It is prepared by binding agent：Take sodium silicate and be configured to 10% solution for later use；
4）Stalk powder, binding agent and the composite catalyst that step 1-3 is obtained, with 75wt% straws, 20wt% bentonite, 4wt%
Binding agent and 1wt% composite catalysts are ratio mixing, make the spherical particle of diameter 5-12mm；
5）It is dried：Spherical particle obtained by upper step is placed in drying baker, at 95 DEG C 12h is dried；
6）Roasting：The dried spherical particle filler of upper step gained is put into into Muffle furnace, 4h is fired at a temperature of 800 DEG C, it is cold
But to room temperature, straw base particle three-dimensional electrode filler is obtained.The granule electrode prepared in embodiment is filled in into three-diemsnional electrode anti-
The electrolytic experiment for carrying out processing paranitrophenol in device is answered, the wherein addition of electrolyte NaCl is 0.4%, and cathode-anode plate is
Graphite electrode.Granule electrode carries out being soaked repeatedly with 150mg/L p-nitrophenyl phenol solutions before degradation experiment, until adsorption saturation.
Operating pressure is 10V, and polar plate spacing is 15cm, and degraded 60min paranitrophenols clearance is 95%.
Embodiment 2：
1）Stalk pretreatment：By 80 DEG C of straw drying 12h, then crush, adopt aperture for 100 mesh sieve, obtain straw
Stalk powder；
2）It is prepared by composite catalyst：Iron chloride, copper chloride and ceria are taken, according to 45wt%, 45wt%, 10wt% weight percent
Number, mix homogeneously obtains composite catalyst；
3）It is prepared by binding agent：Take calcium lignosulfonate and be configured to 10% solution for later use；
4）Stalk powder, binding agent and the composite catalyst that step 1-3 is obtained, with 80wt% straws, 15wt% bentonite, 3wt%
Binding agent and 2wt% composite catalysts are ratio mixing, make the spherical particle of diameter 5-12mm；
5）It is dried：Spherical particle obtained by upper step is placed in drying baker, at 95 DEG C 12h is dried；
6）Roasting：The dried spherical particle filler of upper step gained is put into into Muffle furnace, 4h is fired at a temperature of 900 DEG C, it is cold
But to room temperature, straw base particle three-dimensional electrode filler is obtained.The granule electrode prepared in embodiment is filled in into three-diemsnional electrode anti-
The electrolytic experiment for carrying out processing phenolic waste water in device is answered, the wherein addition of electrolyte NaCl is 0.4%, and cathode-anode plate is stone
Electrode ink.Granule electrode carries out being soaked repeatedly with 300mg/L p-nitrophenyl phenol solutions before degradation experiment, until adsorption saturation.Work
It is 15V to make pressure, and polar plate spacing is 15cm, and during degraded 60min, phenol clearance is 90%.
Claims (9)
1. a kind of straw base particle three-dimensional electrode filler, it is characterised in that：With straw as main base material, also include bentonite,
Binding agent and composite catalyst, the straw is 60wt%-80wt%, and bentonite is 10wt%-20wt%, and binding agent is 1 wt%-
10wt%, composite catalyst is 0.5 wt%-3wt%.
2. a kind of straw base particle three-dimensional electrode filler according to claim 1, it is characterised in that described straw is first used
Pulverizer is crushed, adopt aperture for 100 mesh sieve, obtain stalk powder.
3. a kind of straw base particle three-dimensional electrode filler according to claim 1, it is characterised in that the binding agent is wood
Quality sulfoacid calcium or sodium silicate.
4. a kind of straw base particle three-dimensional electrode filler according to claim 1 and 2, it is characterised in that the straw base
Particle three-dimensional electrode filler is the spherical particle of diameter 5-12mm.
5. a kind of preparation method of straw base particle three-dimensional electrode filler, it is characterised in that comprise the following steps：Straw in parts by weight
Stalk 60wt%-80wt%, bentonite 10wt%-20wt%, binding agent 1-10wt%, composite catalyst 0.5-3wt%, weigh straw and swollen
Profit soil, adds weighed binding agent and composite catalyst after mixing and stirring, stir, and is then pressed into diameter 5-
The spherical particle of 12mm, drying and roasting.
6. the preparation method of a kind of straw base particle three-dimensional electrode filler according to claim 5, it is characterised in that described
Composite catalyst is consisted of：Cerium 10-20wt%, titanium 3-5%, ferrum 30-50wt% and copper 20-40wt%, each component percetage by weight
Sum is 100%.
7. the preparation method of a kind of straw base particle three-dimensional electrode filler according to claim 6, it is characterised in that described
Composite catalyst in the addition form of ferrum be ferric nitrate or iron chloride, the addition form of copper is copper nitrate or copper chloride, cerium
Addition form is ceria or cerous nitrate.
8. according to a kind of preparation method of straw base particle three-dimensional electrode filler of claim 5, it is characterised in that described drying
When baking temperature be 95-130 °C, drying time is 12-24h.
9. according to a kind of preparation method of straw base particle three-dimensional electrode filler of claim 5, it is characterised in that described baking
When stoving temperature be 500-1000 °C, roasting time is 4-6h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989036.6A CN106673141A (en) | 2016-11-10 | 2016-11-10 | Straw-based particle three-dimensional electrode filler and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610989036.6A CN106673141A (en) | 2016-11-10 | 2016-11-10 | Straw-based particle three-dimensional electrode filler and preparation method thereof |
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| CN106673141A true CN106673141A (en) | 2017-05-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301248A (en) * | 2017-07-24 | 2019-02-01 | 南方科技大学 | Battery cathode sheet and preparation method thereof and lithium ion battery |
| CN110282704A (en) * | 2019-05-07 | 2019-09-27 | 广东省测试分析研究所（中国广州分析测试中心） | A kind of electrochemical modification filler for water process |
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| CN104867695A (en) * | 2015-04-03 | 2015-08-26 | 安徽江威精密制造有限公司 | Light-metal-doped straw based carbon electrode material and preparation method thereof |
| KR20150097918A (en) * | 2014-02-19 | 2015-08-27 | 조성우 | Generation of ion-activated water using microorganisms |
| CN104882294A (en) * | 2015-04-03 | 2015-09-02 | 安徽江威精密制造有限公司 | Porous straw-based electrode material with high specific surface area and method of preparation |
| CN105110427A (en) * | 2015-09-30 | 2015-12-02 | 王磊 | Composite micro-electrolysis filler as well as preparation method and application thereof |
-
2016
- 2016-11-10 CN CN201610989036.6A patent/CN106673141A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150097918A (en) * | 2014-02-19 | 2015-08-27 | 조성우 | Generation of ion-activated water using microorganisms |
| CN104867695A (en) * | 2015-04-03 | 2015-08-26 | 安徽江威精密制造有限公司 | Light-metal-doped straw based carbon electrode material and preparation method thereof |
| CN104882294A (en) * | 2015-04-03 | 2015-09-02 | 安徽江威精密制造有限公司 | Porous straw-based electrode material with high specific surface area and method of preparation |
| CN105110427A (en) * | 2015-09-30 | 2015-12-02 | 王磊 | Composite micro-electrolysis filler as well as preparation method and application thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301248A (en) * | 2017-07-24 | 2019-02-01 | 南方科技大学 | Battery cathode sheet and preparation method thereof and lithium ion battery |
| CN109301248B (en) * | 2017-07-24 | 2021-05-04 | 南方科技大学 | Battery negative plate, preparation method thereof and lithium ion battery |
| CN110282704A (en) * | 2019-05-07 | 2019-09-27 | 广东省测试分析研究所（中国广州分析测试中心） | A kind of electrochemical modification filler for water process |
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Application publication date: 20170517 |