CN109851024A - A kind of method of azo dyes in fast degradation waste water - Google Patents
A kind of method of azo dyes in fast degradation waste water Download PDFInfo
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- CN109851024A CN109851024A CN201910067879.4A CN201910067879A CN109851024A CN 109851024 A CN109851024 A CN 109851024A CN 201910067879 A CN201910067879 A CN 201910067879A CN 109851024 A CN109851024 A CN 109851024A
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Abstract
The invention discloses a kind of methods of azo dyes in fast degradation waste water, and the initial concentration that the water pH value to be processed containing azo dyes is adjusted to 3.0~6.0 first, and adjusts the azo dyes of the water body containing azo dyes is 40~120mg/L；Then iron-based amorphous powder is put into above-mentioned water body, the Fe-based amorphous alloy being added in every milliliter of water body containing azo dyes is not less than 0.024g；Then 50 DEG C~60 DEG C at a temperature of to 10~30min of above-mentioned mixed liquor oscillating reactions；It finally by recycling amorphous powder, is discharged after water body pH is adjusted to neutrality, the iron-based amorphous powder chemical formula is FeaSibBcPdCe, low in cost, manufacture craft is mature；Secondly, FeaSibBcPdCePowder and Zero-valent Iron on the azo dyes in degrading waste water compared with, it is more efficient；FeaSibBcPdCeThe sustainable use of powder is reduced being recycled at least 6 times without apparent degradation rate and efficiency.
Description
Technical field
The present invention relates to wastewater degradation field, the side of azo dyes in more particularly to a kind of fast degradation waste water
Method.
Background technique
Currently, the azo dyes in degrading waste water mainly has biological treatment, physical treatment process, method of chemical treatment.To life
For object facture, cannot apply containing various chemical substances complex environment in, or cannot apply it is some containing
The waste water of particularly toxic azo dyes；For physical treatment process, the degradation process of azo dyes is to pass through physics
Absorption, or be stripped out from solution, only pollutant shift and the decomposition of azo dyes, mine is not implemented
Change.For method of chemical treatment, changes the composition of harmful substance in waste water by chemical reaction, keep its innoxious.
Zero-valent Iron is usually used in the processing of industrial wastewater, and because of its simple process, easy to operate, operating cost is low and treatment effect
The advantages that good, however, having seriously affected its degradation printing and dyeing since especially to crystallize ferro element its corrosion resistance poor for Zero-valent Iron
The efficiency of waste water.
Iron based metallic glass (i.e. bulk amorphous alloy) material has excellent corrosion resistance and meta-stable behavior, with crystal
Material, which is compared, has more excellent chemistry and catalytic performance.In recent years, numerous research teams find FeSiB system glassy metal material
Material degradating organic dye, azo dyes and in terms of have remarkable result.2014, BJ University of Aeronautics & Astronautics
Zhang Tao seminar is by obtaining nanoporous after carrying out removal alloying processing in sulfuric acid solution to MgCuY metal glass material
The core-shell structure of copper clad noncrystal substrate, considerably increases specific surface area, improves the effect of the degradation to direct blue 6 azo dyes
Fruit.
In order to make metal glass material realize industrial applications in terms of degradating organic dye especially azo dyes,
It is badly in need of a kind of cheap metal glass material of low cost, simplifies preparation process, while there can be significant drop to organic dyestuff again
Solve effect.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide azo dyes in a kind of fast degradation waste water
Method, this method chemically reacted with Azo dye, destroys dye by adding iron-based amorphous powder into waste water
The dyeing base or auxochromes for expecting molecule, achieve the purpose that decoloration and degradation.
To achieve the above object, the present invention provides the following technical scheme that azo dyes in a kind of fast degradation waste water
Water pH value to be processed containing azo dyes is adjusted to 3.0~6.0 first, and adjusts the idol of the water body containing azo dyes by method
The initial concentration of nitrogen dyestuff is 40~120mg/L；Then iron-based amorphous powder is put into above-mentioned water body, every milliliter contaminates containing azo
The Fe-based amorphous alloy being added in the water body of material is not less than 0.024g；Then 40 DEG C~60 DEG C at a temperature of to above-mentioned mixed liquor
10~30min of oscillating reactions；Finally by recycling amorphous powder, discharged after water body pH is adjusted to neutrality.
The initial concentration of the azo dyes is 120mg/L.
The molecular formula of the iron-based amorphous powder is FeaSibBcPdCe, a, b, c, d, e in formula respectively indicate each corresponding component
The atomic percent of Fe, Si, B, P, C, and meet following condition: 71≤a≤81,5.6≤b≤9.6,7.5≤c≤11.5,3≤
D≤7,0.9≤e≤2.9, a+b+c+d+e=100.
The diameter range of the iron-based amorphous powder is at 0.5~18 μm.
The temperature range is at 50 DEG C~60 DEG C.
The FeaSibBcPdCeThe preparation method is as follows:
Step 1: component Fe is pressedaSibBcPdCeAtomic percent weighs the quality of Fe, Si, B, P, C, a, b, c, d, e in formula,
The atomic percent of each corresponding component Fe, Si, B, P, C are respectively indicated, and meets following condition: 71≤a≤81,5.6≤b≤
9.6,7.5≤c≤11.5,3≤d≤7,0.9≤e≤2.9, a+b+c+d+e=100；
Step 2: material weighed in step 1 is placed in vacuum arc melting equipment, it is evacuated to 3.5 ×
10-3Pa, being passed through argon gas to air pressure immediately is 0.5kPa, reheats melting material；After material is melt into master alloy ingot, it is cooled to
Room temperature, then turn-over melt back 2~5 times, obtain the uniformly mixed alloy of various composition；
Step 3: melted alloy is pulverized, and is then weighed 20~30mg alloy and is put into the quartz for having aperture in lower end
Guan Zhong carries out being heated to alloy melting again to quartz ampoule, using the pressure of protective gas argon gas make the alloy of molten state from
It is continuously sprayed in the aperture of quartz ampoule lower end to outside linear velocity and is on the copper roller of 20~30m/s rotation, obtain with a thickness of 15~
25 μm, width is the amorphous thin ribbon of 0.5~1.5mm；
Amorphous thin ribbon obtained in step 3: being divided into the fragment of 1~3cm of length by step 4, is by quality ratio of grinding media to material
Fragment and abrading-ball are put into ball mill by 60:1, grind 3~5h；
Step 5: after ball milling, thicker particle is weeded out with sieve, obtains thin uniform amorphous powder.
Quartz ampoule aperture in step 3 is circle, and the diameter of the aperture is 1mm.
The revolving speed of ball milling is 250~350r/min in step 4.
Ball mill operational mode is alternate run mode in step 4, with 5mim for an operation cycle, each period ball
Mill operation 4min, stops every 1min.
Sieve mesh number in step 5 is 800.
Beneficial effects of the present invention: Fe-based amorphous Fe used in the present inventionaSibBcPdCePowder manufacture craft is mature, first adjusts
Golden component ratio is integrated, prepares master alloy with electric arc melting plant, then amorphous thin ribbon is prepared by single-roller rapid quenching with quenching, finally by
Ball mill prepares dusty material, FeaSibBcPdCeThere is no noble metal component in powdered ingredients, it is low in cost；Secondly,
FeaSibBcPdCePowder and Zero-valent Iron on the azo dyes in degrading waste water compared with, it is more efficient；In acid pH=3~6
Under conditions of, FeaSibBcPdCePowder is able to maintain good degradation rate；In degradation process, suitably increasing temperature can accelerate to drop
Solution, but after temperature reaches 50~60 DEG C, then heat up and degradation is not helped；The increase of azo dyes concentration will lead to
FeaSibBcPdCeThe degradation rate of powder declines, but if reaction time long enough, degradation rate remains to reach ideal numerical value；
FeaSibBcPdCeThe sustainable use of powder is reduced being recycled at least 6 times without apparent degradation rate and efficiency.
Detailed description of the invention
Fig. 1 is Fe76Si7.6B9.5P5C1.9Reaction result of the powder at different pH；
Fig. 2 is Fe76Si7.6B9.5P5C1.9Reaction result of the powder in the solution of various concentration；
Fig. 3 is Fe76Si7.6B9.5P5C1.9The degradation rate of powder at different temperatures；
Fig. 4 is Fe76Si7.6B9.5P5C1.9Powder particle size distribution figure；
Fig. 5 is UV-Vis spectrophotometry spectrum；
Fig. 6 is Fe76Si7.6B9.5P5C1.9The multiple degradation effect of powder circulation
Specific embodiment
Below with reference to embodiment, the present invention is described in more detail.
Embodiment 1:
The molecular formula of iron-based amorphous powder is Fe76Si7.6B9.5P5C1.9, the Fe76Si7.6B9.5P5C1.9Preparation method such as
Under:
Step 1: component Fe is pressed76Si7.6B9.5P5C1.9The quality of atomic percent weighing Fe, Si, B, P, C；
Step 2: material weighed in step 1 is placed in vacuum arc melting equipment, it is evacuated to 3.5 ×
10-3Pa, being passed through argon gas to air pressure immediately is 0.5kPa, reheats melting material；After material is melt into master alloy ingot, it is cooled to often
Temperature, then turn-over melt back 5 times, obtain the uniformly mixed alloy of various composition；
Step 3: melted alloy is pulverized, and then weighing 25mg alloy and being put into has aperture for circle, aperture in lower end
Diameter be 1mm quartz ampoule in, quartz ampoule is then fixed on the lifting device above induction coil, and make using lifting device
Material in quartz ampoule is carried out being heated to alloy melting again, be utilized by induction coil in the center position of induction coil to material
The pressure of protective gas argon gas sprays the alloy of molten state continuously from the aperture of quartz ampoule lower end to outside linear velocity
On the copper roller of 25m/s rotation, obtain with a thickness of 20 μm, width is the amorphous thin ribbon of 1mm；
Amorphous thin ribbon obtained in step 3: being divided into the fragment of length 2cm by step 4, is 60 by quality ratio of grinding media to material:
1, fragment and abrading-ball are loaded into ball grinder jointly, the material of abrading-ball is stainless steel, and it is 20mm, 10mm, 5mm that abrading-ball, which has diameter,
Large, medium and small three kinds of abrading-balls, portion rate 2:5:10；After ball grinder encapsulates, ball grinder is vacuumized with mechanical pump
Processing；Argon gas is then passed to as protection gas, allows mechanical milling process to carry out under argon atmosphere, is then symmetrically mounted on ball grinder
On G0R75 type planetary ball mill, and after ensuring that ball grinder is locked, the revolving speed of ball milling is adjusted to 300r/min, ball mill operation
Mode is adjusted to alternate run mode, and with 5mim for an operation cycle, ball milling runs 4min in each period, stops every 1min, ball
Mill total time is 4h；
Step 5: after ball milling, thicker particle is weeded out with the sieve of 800 mesh numbers, obtains thin uniform amorphous
Powder.
Embodiment 2: a kind of method of azo dyes in fast degradation waste water, first by the water to be processed containing azo dyes
Body pH value is adjusted to 6.0, and the initial concentration for adjusting the azo dyes of the water body containing azo dyes is 40mg/L；Then by embodiment one
The amorphous powder of preparation is put into above-mentioned water body, and the Fe-based amorphous alloy being added in every milliliter of water body containing azo dyes is not less than
0.024g；Then 40 DEG C~60 DEG C at a temperature of to above-mentioned mixed liquor oscillating reactions 30min；Finally by the non-crystalline flour of recycling
End is discharged after water body pH is adjusted to neutrality.
Implement 3:
As different from Example 2, the water pH value to be processed containing azo dyes is adjusted to 5.0.
Implement 4:
As different from Example 2, the water pH value to be processed containing azo dyes is adjusted to 4.0.
Implement 5:
As different from Example 2, the water pH value to be processed containing azo dyes is adjusted to 3.0.
Embodiment 6:
The initial concentration for adjusting the azo dyes of the water body containing azo dyes as different from Example 2 is 80mg/L.
Embodiment 7:
The initial concentration for adjusting the azo dyes of the water body containing azo dyes as different from Example 2 is
120mg/L。
Embodiment 8:
As different from Example 2,40 DEG C DEG C at a temperature of to above-mentioned mixed liquor oscillating reactions 30min.
Embodiment 9:
As different from Example 2,50 DEG C DEG C at a temperature of to above-mentioned mixed liquor oscillating reactions 30min.
Comparative example 1:
The method of azo dyes, first the water pH value tune by be processed containing azo dyes in a kind of fast degradation waste water
To 6.0, and the initial concentration for adjusting the azo dyes of the water body containing azo dyes is 40mg/L；It then will be in zeroth order iron powder investment
It states in water body, the zeroth order iron powder being added in every milliliter of water body containing azo dyes is not less than 0.024g；Then in 60 DEG C of temperature
To above-mentioned mixed liquor oscillating reactions 30min under degree；Finally by recycling amorphous powder, discharged after water body pH is adjusted to neutrality.
Comparative example 2:
As different from Example 2, the water pH value to be processed containing azo dyes is adjusted to 7.0.
Comparative example 3:
As different from Example 2, the water pH value to be processed containing azo dyes is adjusted to 9.0.
Comparative example 4:
As different from Example 2, the initial concentration of the azo dyes of adjusting water body containing azo dyes is
160mg/L。
Comparative example 5:
As different from Example 2,30 DEG C at a temperature of to above-mentioned mixed liquor oscillating reactions 30min.
Comparative example 6:
The method of azo dyes, first the water pH value tune by be processed containing azo dyes in a kind of fast degradation waste water
To 6.0, and the initial concentration for adjusting the azo dyes of the water body containing azo dyes is 40mg/L；Then it prepared by embodiment one non-
Brilliant strip is put into above-mentioned water body, the Fe-based amorphous alloy 0.024g being added in every milliliter of water body containing azo dyes；Then exist
To above-mentioned mixed liquor oscillating reactions 30min at a temperature of 60 DEG C；Finally by recycling Fe-based amorphous silk ribbon, water body pH is adjusted to
It is discharged after property.
Experimental result and analysis:
Azo dyes in embodiment and comparative example is selected as Orange II (Acid Orange II, the limited public affairs of Shanghai fuzz chemical industry
Department), Orange II is dissolved in deionized water, is made into the azo dyes of different initial concentrations, passes through UV-Vis spectrophotometry luminosity
The absorption intensity of meter measurement water body treated azo dyes, the solution concentration of cooperation following formula estimation dyestuff, judges to degrade
Effect:
Ct=c0 × λmaxt/λmax0
C0And CtRespectively indicate the concentration of the dyestuff of initial time and t moment, λmax 0And λmax tRespectively indicate initial time
With the absorption peak strength of t moment solution.
(1) analysis is compared to embodiment 2-5 and comparative example 2-3, as shown in Figure 1, Fe76Si7.6B9.5P5C1.9Powder
Degradation effect in pH=3~6 is preferable, when pH reaches neutral or alkalinity, degradation efficiency decline.Reaction rate subtracts with pH's
It is small and increase, if the time is enough long, even if degradation rate can also reach close to ph=in the case where the initial pH=6 of 8min or so
Degradation rate when 3 can be by adjusting pH and time to be realized with a low cost identical target for industrial application.
(2) analysis is compared to embodiment 2,6,7 and comparative example 4, as shown in Fig. 2, as II solution of Orange is dense
The raising of degree, Fe76Si7.6B9.5P5C1.9The decline of powder degradation rate.This is because FeaSibBcPdCeActive site on the surface of powder
Limited amount, react carry out during, powder surface due to reaction product aggregation so that work needed for degradation reaction
Property bit number of points reduce, will not only have facilitation to reaction, can also reduce degradation rate.In the solution of pH=6, if when
Between long enough, 40mg/L, 80mg/L, the degradation rate of 120mg/L may eventually reach identical level, this process is no more than
20min, even if concentration reaches 4 times of initial concentration, 160mg/L, in time enough situations, degradation rate is also only dropped to
87.5%.
(3) analysis, such as Fig. 3, Fe are compared to embodiment 2,8,9 and comparative example 576Si7.6B9.5P5C1.9The drop of powder
Solution rate increases as the temperature increases.Temperature increases to 40 DEG C from room temperature, degradation rate significantly from 56.6% promoted to
81.1%, and when temperature increases in 50~60 DEG C, it is seen that the trend of growth very little, it is almost constant, finally
Degradation rate reach 85.9%.This is because as the temperature rises, molecules in solution activity increases, dye molecule can be accelerated
It falls in reaction site.It can be suitably heated up in the industrial production to reach more effective result.
(4) to embodiment with SEM method detect amorphous powder partial size and pore-size distribution, such as Fig. 4,
Fe76Si7.6B9.5P5C1.9The range of the diameter of powder is at 0.5~18 μm, and average diameter is estimated as 6.5 μm, size
Distribution is not very uniformly, but more to concentrate on 10 μm or less.The smaller total surface area of size is bigger, is more conducive to degrade molten
Liquid.
(5) to embodiment 2, comparative example 1 is compared analysis, such as Fig. 5, contains in II waste water of Orange in degradation,
Fe76Si7.6B9.5P5C1.9Powder is more efficient compared to zeroth order iron powder.Due to Fe76Si7.6B9.5P5C1.9Amorphous powder is long-range
Unordered, the metal cation of periodic arrangement is lacked in atomic arrangement, so that the constraint to valence electron weakens, compared to zeroth order
Electronics in iron crystal, these electronics have higher activity, so the higher material of metastable energy level is more active.
Fe76Si7.6B9.5P5C1.9After by acid corrosion, surface texture changes, and pit hole becomes more, and total surface area becomes larger, and contacts solution
Area increases.Fe76Si7.6B9.5P5C1.9In also contain nonmetalloid, primary battery can be formed in the solution with Fe so that drop
Solution reaction is accelerated.Residual stress after ball milling improves, and reduces the reaction activity of degradation reaction.Moreover,
Fe76Si7.6B9.5P5C1.9Atom in amorphous powder is in height undersaturated condition, can provide more in degradation process
Reactivity site.
(6) azo dyes in waste water is selected as Orange II (Acid Orange II, Shanghai fuzz Chemical Co., Ltd.), will
Orange II is dissolved in deionized water, is adjusted with HCL and NaOH, obtains pH=6, and initial concentration is the solution of 40mg/L, claims respectively
The solution for taking 15ml above-mentioned weighs Fe prepared by 0.036g embodiment one in a beaker76Si7.6B9.5P5C1.9Powder difference
It adds in above-mentioned beaker, at 60 DEG C, 5min is centrifuged with the revolving speed of 4000/min with centrifuge, slowly draws liquid with dropper
Body avoids the loss to powder, and by the recycling of powder, Fe is observed in circulation degradation76Si7.6B9.5P5C1.9Powder degradation how many times
Behind efficiency starts to be decreased obviously.
Absorption intensity is measured with ultraviolet-visible spectrophotometer, the solution concentration of cooperation following formula estimation dyestuff is sentenced
Disconnected degradation effect:
Ct=c0 × λmaxt/λmax0
C0And CtRespectively indicate the concentration of the dyestuff of initial time and t moment, λmax 0And λmax tRespectively indicate initial time
With the absorption peak strength of t moment solution.
As disclosed Fe in Fig. 676Si7.6B9.5P5C1.9After powder six times are recycled, as the number of circulation increases, drop
The decline of solution rate.In first time degradation, degradation is basically completed in 2min, and in degradation Orange II later, although the time
Extended, but is also all to degrade to terminate in 5min.This means that Fe76Si7.6B9.5P5C1.9Amorphous powder can at least recycle
Using six times, and activity is not lost significantly, and repeatedly circulation does not influence degradation rate and degradation efficiency significantly.
To sum up, the Fe-based amorphous Fe used in the present inventionaSibBcPdCePowder manufacture craft is mature, first adjusts alloying component ratio
Example, prepares master alloy with electric arc melting plant, then prepare amorphous thin ribbon by single-roller rapid quenching with quenching, prepares powder finally by ball mill
Powder material, FeaSibBcPdCeThere is no noble metal component in powdered ingredients, it is low in cost；Secondly, FeaSibBcPdCePowder and zeroth order
Iron compares on the azo dyes in degrading waste water, more efficient；Under conditions of acid pH=3~6, FeaSibBcPdCePowder
End is able to maintain good degradation rate；In degradation process, temperature energy accelerated degradation is suitably increased, but temperature reaches 50~60 DEG C
Afterwards, then heat up to degradation do not help；The increase of azo dyes concentration will lead to FeaSibBcPdCeThe degradation rate of powder declines, but
If reaction time long enough, degradation rate remains to reach ideal numerical value；FeaSibBcPdCeThe sustainable use of powder, makes in circulation
It is reduced at least 6 times without apparent degradation rate and efficiency.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of method of azo dyes in fast degradation waste water, it is characterised in that: first by be processed containing azo dyes
Water pH value is adjusted to 3.0~6.0, and the initial concentration for adjusting the azo dyes of the water body containing azo dyes is 40~120mg/L；So
Iron-based amorphous powder is put into above-mentioned water body afterwards, the Fe-based amorphous alloy being added in every milliliter of water body containing azo dyes is not low
In 0.024g；Then 40 DEG C~60 DEG C at a temperature of to 10~30min of above-mentioned mixed liquor oscillating reactions；It is non-finally by recycling
Crystalline flour end, is discharged after water body pH is adjusted to neutrality.
2. the method for azo dyes in a kind of fast degradation waste water according to claim 1, it is characterised in that: the azo
The initial concentration of dyestuff is 120mg/L.
3. the method for azo dyes in a kind of fast degradation waste water according to claim 3, it is characterised in that: described iron-based
The molecular formula of amorphous powder is FeaSibBcPdCe, a, b, c, d, e in formula respectively indicate the original of each corresponding component Fe, Si, B, P, C
Sub- percentage, and meet following condition: 71≤a≤81,5.6≤b≤9.6,7.5≤c≤11.5,3≤d≤7,0.9≤e≤
2.9, a+b+c+d+e=100.
4. the method for azo dyes in a kind of fast degradation waste water according to claim 3, it is characterised in that: described iron-based
The diameter range of amorphous powder is at 0.5~18 μm.
5. the method for azo dyes in a kind of fast degradation waste water according to claim 1, it is characterised in that: the temperature
Range is at 50 DEG C~60 DEG C.
6. Fe according to claim 1aSibBcPdCePreparation method, it is characterised in that: the FeaSibBcPdCePreparation
Method is as follows:
Step 1: component Fe is pressedaSibBcPdCeAtomic percent weighs the quality of Fe, Si, B, P, C, a, b, c, d, e in formula, difference
It indicates the atomic percent of each corresponding component Fe, Si, B, P, C, and meets following condition: 71≤a≤81,5.6≤b≤9.6,
7.5≤c≤11.5,3≤d≤7,0.9≤e≤2.9, a+b+c+d+e=100；
Step 2: material weighed in step 1 is placed in vacuum arc melting equipment, is evacuated to 3.5 × 10-3Pa,
Being passed through argon gas to air pressure immediately is 0.5kPa, reheats melting material；After material is melt into master alloy ingot, it is cooled to room temperature, then
Turn-over melt back 2~5 times, obtains the uniformly mixed alloy of various composition；
Step 3: melted alloy is pulverized, and is then weighed 20~30mg alloy and is put into the quartz ampoule that there is aperture in lower end,
Quartz ampoule is carried out being heated to alloy to melt again, makes the alloy of molten state from quartz ampoule using the pressure of protective gas argon gas
Continuously being sprayed in the aperture of lower end to outside linear velocity is to obtain on the copper roller of 20~30m/s rotation with a thickness of 15~25 μm, wide
Degree is the amorphous thin ribbon of 0.5~1.5mm；
Amorphous thin ribbon obtained in step 3: being divided into the fragment of 1~3cm of length by step 4, is 60:1 by quality ratio of grinding media to material,
Fragment and abrading-ball are put into ball mill, 3~5h is ground；
Step 5: after ball milling, thicker particle is weeded out with sieve, obtains thin uniform amorphous powder.
7. the method for azo dyes in a kind of fast degradation waste water according to claim 6, it is characterised in that: in step 3
Quartz ampoule aperture be circle, the diameter of the aperture is 1mm.
8. the method for azo dyes in a kind of fast degradation waste water according to claim 6, it is characterised in that: in step 4
The revolving speed of ball milling is 250~350r/min.
9. the method for azo dyes in a kind of fast degradation waste water according to claim 6, it is characterised in that: in step 4
Ball mill operational mode is alternate run mode, and with 5mim for an operation cycle, each period ball milling runs 4min, stop every
1min。
10. the method for azo dyes in a kind of fast degradation waste water according to claim 6, it is characterised in that: step 5
In sieve mesh number be 800.
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| CN110918911A (en) * | 2019-11-19 | 2020-03-27 | 华南理工大学 | Iron-based series amorphous alloy strip, preparation method thereof and application thereof in degradation of azo dye wastewater |
| CN111533191A (en) * | 2020-05-12 | 2020-08-14 | 辽宁大学 | Method for degrading dye wastewater by using high-entropy alloy |
| CN112591928A (en) * | 2020-11-03 | 2021-04-02 | 同济大学 | Simple method for quickly decoloring dye wastewater |
| CN113201699A (en) * | 2021-04-13 | 2021-08-03 | 华南理工大学 | Iron-based alloy material and preparation method and application thereof |
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| CN110918911A (en) * | 2019-11-19 | 2020-03-27 | 华南理工大学 | Iron-based series amorphous alloy strip, preparation method thereof and application thereof in degradation of azo dye wastewater |
| CN110918911B (en) * | 2019-11-19 | 2022-04-22 | 华南理工大学 | Iron-based series amorphous alloy strip, preparation method thereof and application thereof in degradation of azo dye wastewater |
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| CN111533191B (en) * | 2020-05-12 | 2022-07-19 | 辽宁大学 | Method for degrading dye wastewater by using high-entropy alloy |
| CN112591928A (en) * | 2020-11-03 | 2021-04-02 | 同济大学 | Simple method for quickly decoloring dye wastewater |
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| CN115849544B (en) * | 2022-12-09 | 2023-08-04 | 华南理工大学 | Method for removing azo dye by utilizing pyrite reinforced iron-based amorphous alloy |
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