CN104326548A - Method for degrading safranine T - Google Patents
Method for degrading safranine T Download PDFInfo
- Publication number
- CN104326548A CN104326548A CN201410595350.7A CN201410595350A CN104326548A CN 104326548 A CN104326548 A CN 104326548A CN 201410595350 A CN201410595350 A CN 201410595350A CN 104326548 A CN104326548 A CN 104326548A
- Authority
- CN
- China
- Prior art keywords
- safranine
- hydrogen peroxide
- waste water
- sodium nitrite
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- OARRHUQTFTUEOS-UHFFFAOYSA-N safranin Chemical compound [Cl-].C=12C=C(N)C(C)=CC2=NC2=CC(C)=C(N)C=C2[N+]=1C1=CC=CC=C1 OARRHUQTFTUEOS-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 230000000593 degrading effect Effects 0.000 title abstract description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 29
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims abstract description 22
- 235000010288 sodium nitrite Nutrition 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000035484 reaction time Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 14
- 239000002351 wastewater Substances 0.000 abstract description 14
- 230000015556 catabolic process Effects 0.000 abstract description 10
- 238000006731 degradation reaction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000975 dye Substances 0.000 description 16
- 230000003647 oxidation Effects 0.000 description 10
- CMFNMSMUKZHDEY-UHFFFAOYSA-N peroxynitrous acid Chemical compound OON=O CMFNMSMUKZHDEY-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 239000002253 acid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000004043 dyeing Methods 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000004042 decolorization Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010919 dye waste Substances 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000556 factor analysis Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a method for degrading safranine T. The method comprises the following steps: a, adjusting the pH value of a safranine T solution to 1-2.8; b, adding hydrogen peroxide and agitating and mixing uniformly; and c, adding sodium nitrite to start a reaction; and rapidly agitating and simultaneously adding, wherein the reaction time is 25-60 seconds. The method is used as a high-grade oxidization method for efficiently degrading organic wastewater and residual H2O2 in a system can be cooperated with a traditional Fenton oxidization system, so that the efficient, rapid and pollution-free degradation effect is realized and the method is worthy of being popularized.
Description
Technical field
The present invention relates to waste water treatment, particularly relate to a kind of process of waste water from dyestuff.
Background technology
Waste water from dyestuff is one of professional waste water of current several refractory reason, accounts for 1/10 of trade effluent total release.Along with the development of dyestuff and printing and dyeing industry, its sewage flow rate and the pollution level to water body are aggravated.
Safranine T (ST) is widely used in, outside weaving, printing and dyeing and ink industry field, also can be used for paper, toy and some dyeing plastic articles.At present, the method for domestic and international dye wastewater treatment mainly contains absorption method, biological degradation method, photocatalytic method and electrochemical oxidation process etc.
And the absorption adopted in traditional water technology, flocculation and biological oxidation process often can not reach satisfied removal effect to the process of waste water from dyestuff.In recent years, high-level oxidation technology is with its stronger oxidation capacity, and the more and more concerned safranine T of the factors such as non-secondary pollution, as one of organic dye, is widely used in the industrial circles such as weaving, printing and dyeing and ink, along with waste water discharge in a large number with environment among, severe contamination is caused to environment.Due to organic dye complex structure, colourity is dark, is all that the refractory that people generally acknowledge manages one of waste water all the time.Some relevant treatment techniques are comparatively ripe at present, but the greatest problem existed is exactly that cost for wastewater treatment is too high, for some medium-sized and small enterprises, is difficult to a large amount of fund inputs.Therefore, develop energy-efficient dye waste water treatment method to reach the dual-use function of decolouring and raising organic dye waste water biodegradability, will there is very important social benefit, economic benefit and environmental benefit.
Current Application comparison widely high-level oxidation technology dye wastewater treatment still based on Fenton system.
When adopting Fenton system process waste water, ubiquity H
2o
2dosage comparatively large (being greater than 0.1mol/L) and the not high phenomenon of utilization ratio, cause a large amount of wastes of hydrogen peroxide, considerably increase the application cost of this technology and limit its range of application.This seminar, through experimental study, finds in acid condition, H
2o
2with NaNO
2reaction produces peroxynitrite, and the peroxynitrite of generation can react with safranine T rapidly, can reach safranine T object of degrading.This system greatly reduces H compared with Fenton system
2o
2dosage, shorten the reaction times.If have excessive unreacted Sodium Nitrite, hydrogen peroxide, automatically can degrade very soon again in the environment, new pollution can not be caused to environment.Thereby establish a kind of method of new efficient degradation waste water from dyestuff, the process for waste water from dyestuff provides certain theory and practice to instruct, and has and should have prospect widely.
In recent years, the high-level oxidation technology based on free radical causes the attention of people day by day, particularly very active to the research of dye decolored process.Advantages such as free-radical oxidn method is simple to operate because of it, and reaction fast and oxidation is thorough and receiving much concern.Safranine T is as a kind of primary dye, and applying in the industrial production is also widely.This research for substrate, adopts peroxynitrite system to carry out the oxide treatment of dyestuff with safranine T.Investigate H
2o
2dosage, nitrite concentration, pH value etc. on the impact of colourity, to select the treatment process of more economical practicality.
Summary of the invention
The invention provides a kind of method of can automatically degrade very soon, can not cause environment in the environment new pollution, new efficient degradation safranine T waste water from dyestuff.
Technical scheme of the present invention is: a kind of method of safranine T that degrades, comprises step:
A is by safranine T solution, and adjust ph is 1 ~ 2.8;
B and then add hydrogen peroxide, stirring and evenly mixing;
C adds Sodium Nitrite and starts reaction, and rapid stirring adds simultaneously, and the reaction times is 25 ~ 60 seconds.
Further, the volumetric molar concentration of hydrogen peroxide is 0.002 ~ 0.038, and the volumetric molar concentration of Sodium Nitrite is 0.0008 ~ 0.03.
Further, preferred plan of the present invention is when pH value is less than 2.8, described NaNO
2and H
2o
2volumetric molar concentration be 1:1 ~ 1.5; Reaction times is for being greater than 60s.
Free radical is atom, lewis' acid containing unpaired electronics, is a kind of extremely active, unstable, compound that life cycle is short, it by electron transmission with other molecule generation oxidation-reduction reaction.
Peroxynitrite ONOOH is a kind of free radical that oxidisability is very strong, can by Sodium Nitrite and H
2o
2in acid condition in conjunction with generation, in acid condition, the peroxynitrite of generation is very unstable, and the transformation period only has 1 ~ 2s, and very fast isomery turns to nitric acid, but peroxynitrite has very strong oxygenizement, the short period of time just can initiated oxidation-reduction reaction.
Therefore, in the solution containing safranine T dyestuff, Sodium Nitrite and H is added
2o
2, in acid condition in conjunction with the safranine T dyestuff rapid oxidation degraded that the difficulty in solution can be decomposed by the peroxynitrite of generation, reach the object of fading.
Reaction mechanism: H-O-O-H(hydrogen peroxide) and H-O-N=O(acidic conditions under Sodium Nitrite change nitrous acid into) reaction generates H-O-O-N=O(peroxynitrite).The peroxynitrite oxidation capacity generated, much larger than hydrogen peroxide, can make the safranine T of difficult degradation degrade, reach the object of fading.
The present invention is as a kind of advanced oxidization method of efficient degradation organic waste water, and H residual in system
2o
2can also act synergistically with traditional Fenton oxidation system, reach efficient quick free of contamination degradation effect, be more worthy to be popularized.
Embodiment
ST of the present invention and safranine T.
PH value is 1 ~ 2.8, is to allow Sodium Nitrite change nitrous acid in acid condition.
The following is embodiment, following embodiment is carried out at normal temperatures.
Embodiment 1
When safranine T concentration is 4mg/L, the NaNO of different concns
2and H
2o
2impact on percent of decolourization:
Following NaNO
2and H
2o
2concentration be volumetric molar concentration;
Table 1.1
Table 1.2
Embodiment 2
When safranine T concentration is different concns, the NaNO of different concns
2with hydrogen peroxide on the impact on percent of decolourization:
Following NaNO
2be volumetric molar concentration with the concentration of hydrogen peroxide;
Table 2.1
Table 2.2
Embodiment 3
When safranine T concentration is 80mg/L, the NaNO of different concns
2with hydrogen peroxide on the impact on percent of decolourization:
Following NaNO
2be volumetric molar concentration with the concentration of hydrogen peroxide;
Table 3.1
Table 3.2
By carrying out orthogonal experiment and single factor analysis experiment to safranine T waste water, determine the optimum experimental condition of this dyeing waste water of process.At NaNO
2and H
2o
2for volumetric molar concentration be 1:1 ~ 1.5 time, the reaction times is under the condition of 60s, and percent of decolourization can reach more than 95%.Experiment proves that peroxynitrite system can efficient degradation ST waste water.Proved by above-mentioned experiment, this system can as a kind of advanced oxidization method of efficient degradation organic waste water, and H residual in system
2o
2can also act synergistically with traditional Fenton oxidation system, reach efficient quick free of contamination degradation effect, be worth more deep research and extension.
Claims (3)
1. to degrade a method of safranine T, comprise step: a is by safranine T solution, and adjust ph is 1 ~ 2.8; B and then add hydrogen peroxide, stirring and evenly mixing; C adds Sodium Nitrite and starts reaction, and rapid stirring adds simultaneously, and the reaction times is 25 ~ 60 seconds.
2. the method for claim 1, is characterized in that, the volumetric molar concentration of described hydrogen peroxide is 0.001 ~ 0.03, and the volumetric molar concentration of Sodium Nitrite is 0.0008 ~ 0.03.
3. method as claimed in claim 1 or 2, it is characterized in that, the volumetric molar concentration of described Sodium Nitrite and hydrogen peroxide is 1:1 ~ 1.5; Reaction times is 60s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595350.7A CN104326548B (en) | 2014-10-30 | 2014-10-30 | A method of degradation safranine T |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595350.7A CN104326548B (en) | 2014-10-30 | 2014-10-30 | A method of degradation safranine T |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104326548A true CN104326548A (en) | 2015-02-04 |
| CN104326548B CN104326548B (en) | 2019-11-15 |
Family
ID=52401377
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410595350.7A Active CN104326548B (en) | 2014-10-30 | 2014-10-30 | A method of degradation safranine T |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104326548B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198068A (en) * | 2015-10-27 | 2015-12-30 | 湖北科技学院 | Method for degrading carmine |
| CN108918518A (en) * | 2018-05-21 | 2018-11-30 | 西北农林科技大学 | The observation method of ordinary optical, fluorescence and scanning electron microscope to same cellular morphology |
-
2014
- 2014-10-30 CN CN201410595350.7A patent/CN104326548B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198068A (en) * | 2015-10-27 | 2015-12-30 | 湖北科技学院 | Method for degrading carmine |
| CN108918518A (en) * | 2018-05-21 | 2018-11-30 | 西北农林科技大学 | The observation method of ordinary optical, fluorescence and scanning electron microscope to same cellular morphology |
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| Publication number | Publication date |
|---|---|
| CN104326548B (en) | 2019-11-15 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20191024 Address after: 437100 No.88 Xianning Avenue, Wenquan Town, Xianning District, Xianning City, Hubei Province Applicant after: Hubei University of Science and Technology Address before: 437600 technology building, 380 Jiugong Avenue, Tongyang Town, Tongshan County, Xianning City, Hubei Province Applicant before: Huang Junchao |
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Effective date of registration: 20210105 Address after: 273300 room 207, East 2nd floor, courtyard of Management Committee of Shandong Pingyi Economic Development Zone, west section of Jinhua Road, Pingyi Economic Development Zone, Linyi City, Shandong Province Patentee after: Pingyi Economic Development Zone Investment Development Co.,Ltd. Address before: 401320 Banan District, Banan District, Chongqing, No. 8-29, Yu Nan Road, No. 8-29 Patentee before: Chongqing Boshi Intellectual Property Service Co.,Ltd. Effective date of registration: 20210105 Address after: 401320 Banan District, Banan District, Chongqing, No. 8-29, Yu Nan Road, No. 8-29 Patentee after: Chongqing Boshi Intellectual Property Service Co.,Ltd. Address before: 88 Xianning Avenue, Wenquan Town, Xianning District, Xianning City, Hubei Province 437100 Patentee before: HUBEI University OF SCIENCE AND TECHNOLOGY |