CN107434280A - A kind of Electrochemical Decolorization method of direct dyes waste water - Google Patents
A kind of Electrochemical Decolorization method of direct dyes waste water Download PDFInfo
- Publication number
- CN107434280A CN107434280A CN201710867272.5A CN201710867272A CN107434280A CN 107434280 A CN107434280 A CN 107434280A CN 201710867272 A CN201710867272 A CN 201710867272A CN 107434280 A CN107434280 A CN 107434280A
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- Prior art keywords
- waste water
- direct dyes
- electrochemical
- decolorization
- present
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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
- C02F1/46109—Electrodes
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
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- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The present invention relates to a kind of discoloration method of direct dyes waste water, more particularly to a kind of Electrochemical Decolorization method of direct dyes waste water.Using FTO glass as anode material, waste water is placed in electrolytic cell and carries out Electrochemical Decolorization.The present invention is using the tin dioxide conductive glass (FTO glass) of doping fluorine as anode material, and the material translucency is good, if desired, photocatalysis reagent can be added in waste liquid simultaneously, carried out while so as to realize photocatalysis and Electrochemical Decolorization, improve decolorizing effect, reduce energy consumption.The inventive method decolorizing effect is notable, and the solution colourity after decolouring is low, translucency is good, and electrode can be with Reusability.The quick decolorization of direct dyes can be realized, is advantageous to environmental protection.
Description
Technical field
The present invention relates to a kind of discoloration method of direct dyes waste water, more particularly to a kind of electrochemistry of direct dyes waste water
Discoloration method.
Background technology
1884 Bao Dige (Bottiger) chemically synthesize first direct dyes --- Congo red (Congo
Red), now, existing more than the 100 years long history of direct dyes.Direct dyes be widely used in the dyeing of various textile materials with
Stamp.With the development of dye industry, caused by environmental pollution it is increasingly severe.Direct dyes waste water composition complicated component, difficulty
Degradation material is more, colourity is big, unprocessed not only to influence the growth of aquatic animals and plants when being directly discharged into water body, and improves
The content of organic matter in water body, the most serious is dyestuff and its some derivatives produced in natural water have it is carcinogenic,
Teratogenesis, mutagenic three-induced effect have tremendous influence to aquatic ecological environment.Therefore, to it before waste water from dyestuff is discharged into water body
It is very necessary to carry out effective processing.
At present, the processing to dyeing waste water both at home and abroad mainly employs chemical method (such as oxidizing process, Coagulation Method and electrochemical process
Deng), physical-chemical process (conventional has absorption method, membrane technology etc.) and bioanalysis (such as throwing bacterium method, anaerobic-aerobic technique).Electrification
Treatment technology is learned because it has the advantages that rapid nontoxic, non-secondary pollution, high to the clearance of pollutant, and is referred to as " environment
It is friendly " technology.
Electrochemical process has proved to be effective in terms of the treatment of Organic Wastewater of bio-refractory, and this proof is to waste water
Processing brings new vitality, and there occurs the reform for the treatment of technology.In electrochemical treatments technology, because the oxidation of organic matter
Decomposition mostly occurs in anode, so most of research emphasis is the electrochemical properties of anode at present.Wherein, metal is that the mankind are earliest
The anode material used, let it be to the greatest extent, and electric conductivity is fine, but dissolution phenomenon occurs in electrolytic process in metal, so,
The material of anode has not only been lost, and new impurity is added to electrolytic process, has influenceed dyestuff degradation results.Then, Ren Leiyong
Inert material replaces metal as anode, but situation and allows of no optimist, although inert material is not in dissolution as anode
Phenomenon, but electro catalytic activity is not high so that the inefficient of waste water is handled, and electrode easily loses because of being contaminated
It is living.
Tin ash has UV absorption coefficient big, it is seen that light translucency is good, and resistivity is low, and chemical property stabilization etc. has
Many merits, there is better performance by being doped into fluorine tin dioxide thin film.If the tin ash for adulterating fluorine is led
Electric glass (FTO glass) is used as anode material, and its sheet resistivity is low, is easily worked, and electrode cost is low, available for electrochemical degradation
Technology.
The content of the invention
The technical problem to be solved in the present invention, it is to provide a kind of Electrochemical Decolorization method of direct dyes waste water, decolourizes
Significant effect, and electrode can be with Reusability.
What the present invention was realized in：
The Electrochemical Decolorization method of a kind of direct dyes waste water of the present invention, using FTO glass as anode material, by waste water
It is placed in electrolytic cell and carries out Electrochemical Decolorization.
In the electrolytic cell, cathode material includes graphite material, platinum product matter, stainless steel.
The present invention will adulterate the tin dioxide conductive glass (FTO glass) of fluorine as anode material, and the material translucency is good,
If desired, photocatalysis reagent can be added in waste liquid simultaneously, carry out while so as to realize photocatalysis and Electrochemical Decolorization,
Decolorizing effect is improved, reduces energy consumption.
The invention has the advantages that：
The inventive method decolorizing effect is notable, and the solution colourity after decolouring is low, translucency is good, and electrode can make repeatedly
With.The quick decolorization of direct dyes can be realized, is advantageous to environmental protection.
Embodiment
Embodiment 1
Direct rhodo is naphthalene system neighbour's hydroxy azo dyestuff, also belongs to direct type dye.To adulterate the tin ash of fluorine
(FTO) electro-conductive glass be anode, graphite be negative electrode, the pH value for adjusting waste water from dyestuff is 7.0, and it is 10V to control applied voltage, electrode
Polar plate interval is 4cm, after direct rhodo (0.4g/L) solution electrochemistry degraded 60min containing 0.16g/L sodium chloride, directly
The percent of decolourization of rhodo can reach more than 95%.
Embodiment 2
The difference of the present embodiment and above-described embodiment 1 is：Carry out electrochemical degradation when, control electric current and non-controlling is additional
Voltage.By carrying out Electrochemical Decolorization to direct straw colour, the pH value for adjusting waste water from dyestuff is 7.0, and it is 0.2A/ to set application electric current
cm2, electrode pad is at intervals of 3cm, and degrade 10min to direct straw colour (0.5g/L) solution electrochemistry containing 2.0g/L sodium chloride
Afterwards, the percent of decolourization of direct straw colour can reach more than 90%.Speculated by the infrared spectrogram before and after direct straw colour Electrochemical Decolorization
Part azo bond and phenyl ring fracture in its electrolytic process.
Embodiment 3
The difference of the present embodiment and above-described embodiment 1 is：Using platinum rod as cathode material, electrification has been carried out to direct orange S
Learn and decolourize.When controlling applied voltage to be 20V, electrode pad is at intervals of 5cm, during with 0.8g/L sodium chloride as electrolyte, electrolysis
Direct orange S dye solutions (0.08g/L, pH 7.0) 15min, the percent of decolourization of its dyestuff is up to 76.1%.Its series of degrading is one
Order reaction, the azo double bond in decolorization in direct orange S structures are first broken, and part naphthalene nucleus is destroyed, and sulfonic group comes off.
Although the foregoing describing the embodiment of the present invention, those familiar with the art should manage
Solution, the specific embodiment described by us are merely exemplary, rather than for the restriction to the scope of the present invention, are familiar with this
The equivalent modification and change that the technical staff in field is made in the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (2)
- A kind of 1. Electrochemical Decolorization method of direct dyes waste water, it is characterised in that：, will be useless using FTO glass as anode material Water, which is placed in electrolytic cell, carries out Electrochemical Decolorization.
- 2. the Electrochemical Decolorization method of direct dyes waste water according to claim 1, it is characterised in that：The electrolytic cell In, cathode material includes graphite material, platinum product matter or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710867272.5A CN107434280A (en) | 2017-09-22 | 2017-09-22 | A kind of Electrochemical Decolorization method of direct dyes waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710867272.5A CN107434280A (en) | 2017-09-22 | 2017-09-22 | A kind of Electrochemical Decolorization method of direct dyes waste water |
Publications (1)
| Publication Number | Publication Date |
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| CN107434280A true CN107434280A (en) | 2017-12-05 |
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| CN201710867272.5A Pending CN107434280A (en) | 2017-09-22 | 2017-09-22 | A kind of Electrochemical Decolorization method of direct dyes waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876767A (en) * | 2019-04-19 | 2019-06-14 | 闽江学院 | A kind of preparation and application of diatomite/lanthanum cerate composite material |
| CN111646536A (en) * | 2020-06-18 | 2020-09-11 | 闽江学院 | Method for directly and photoelectrically degrading basic dye based on FTO conductive glass |
| CN112010399A (en) * | 2020-07-20 | 2020-12-01 | 西安怡速安智能科技有限公司 | Anode coating formula for decolorizing of electrochemical electrode |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736494A (en) * | 2014-01-02 | 2014-04-23 | 上海大学 | Preparation method of ternary oxide film structure with visible light photoelectric catalysis effect |
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2017
- 2017-09-22 CN CN201710867272.5A patent/CN107434280A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736494A (en) * | 2014-01-02 | 2014-04-23 | 上海大学 | Preparation method of ternary oxide film structure with visible light photoelectric catalysis effect |
Non-Patent Citations (1)
| Title |
|---|
| 王玲敏等: "罗丹明B的电化学降解工艺研究", 《闽江学院学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876767A (en) * | 2019-04-19 | 2019-06-14 | 闽江学院 | A kind of preparation and application of diatomite/lanthanum cerate composite material |
| CN111646536A (en) * | 2020-06-18 | 2020-09-11 | 闽江学院 | Method for directly and photoelectrically degrading basic dye based on FTO conductive glass |
| CN112010399A (en) * | 2020-07-20 | 2020-12-01 | 西安怡速安智能科技有限公司 | Anode coating formula for decolorizing of electrochemical electrode |
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Application publication date: 20171205 |
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