CN106957098A - A kind of its application of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water from dyestuff abilities - Google Patents
A kind of its application of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water from dyestuff abilities Download PDFInfo
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- CN106957098A CN106957098A CN201710228086.7A CN201710228086A CN106957098A CN 106957098 A CN106957098 A CN 106957098A CN 201710228086 A CN201710228086 A CN 201710228086A CN 106957098 A CN106957098 A CN 106957098A
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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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
A kind of its application of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water from dyestuff abilities, belongs to nano material and improves the field of dye wastewater treatment ability.Nano zero valence iron is prepared using purple perilla seed extract solution as stabilizer under room temperature condition, dyestuff is used under suspension and is degraded.Degradation process is placed under low-intensity magnetic field environment and carried out, degradation capability of the nano zero valence iron to waste water from dyestuff of synthesis is improved.The dosage of purple perilla seed nano zero valence iron suspension is 0.5 2.5g/L, degradation rate of the nano zero valence iron to alkaline brown g waste water from dyestuff of synthesis is not only increased under low-intensity magnetic field environment, simultaneously under low-intensity magnetic field environment, the ability of the nano zero valence iron degrading alkaline palm fibre G waste water from dyestuff of green syt is 1.72 2.07 times under no magnetic field environment.The present invention improves the ability of green syt nano zero valence iron degrading alkaline palm fibre G waste water, and method simple and fast reaches dye decolored, degraded, the purpose for removing dye organic pollutant in a short time.
Description
Technical field
The invention belongs to the processing method for the quick deoxidization, degradation ability for improving waste water from dyestuff, and in particular to be a kind of profit
The application of green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities is improved with weak magnetic field condition.
Background technology
For nano zero valence iron, need to consider agglomeration and stability both properties during application, it is naked
The nano zero valence iron of dew is easy to lose activity reuniting because of it.Therefore, in order to reduce or prevent that nano zero valence iron from reuniting, it is necessary to
Stabilizer is enclosed on surface in nano particle during synthesis, and electronic repulsion forces and spatial stability are provided for nano particle
Property, so as to reduce the agglomeration and adhesiveness of nano zero valence iron.But the use of chemical reagent improves synthesis cost, and to environment
It is harmful, thus to carry out the synthesis of nano zero valence iron be significant using the material of green non-pollution, so using purple
The method that the chemical substances such as the substitution of Perillaseed extract solution PVP, CMC, THF synthesize nano zero valence iron as surface modifier is feasible
's.Publication No. CN104174870A is the patent of Gao Jingfeng et al. applications, it is mentioned that being used as table by the use of grape pip extract solution
Face modifying agent synthesizes nano zero valence iron and is applied to the degraded of two kinds of reactive dye of reactive brilliant red k-2g and Reactive Brilliant Blue KN-R
The purple perilla seed that involved grape pip is used with the present invention in method, this method has essential distinction in structure composition, prepares step
The application effect of purple perilla seed-nano zero valence iron of synthesis is had no effect on while rapid substantially simplified, with obvious progressive.
While the mode using green syt solves the reunion sex chromosome mosaicism of nano zero valence iron, deposited during application
Also gradually paid close attention in some problems and have to be solved and improvement.Nano zero valence iron is added to the body for treating degradation of contaminant
After in system, nano zero valence iron can produce ferrous iron/iron ion during the course of the reaction, be combined with the hydroxyl of generation (hydrogen) of generation iron
Oxide is covered in nano zero-valence iron surface formation passivating film, and as reaction is carried out, passivation film thickness increases and influences nanometer zero
Contact between valency molten iron and pollutant, reduces the removal efficiency of pollutant.In actual applications, degraded after pollutant
Often have nano zero valence iron remaining, but remaining nano zero valence iron substantially weakens to the degradation capability of pollutant, explanation is received
The activity reduction of rice Zero-valent Iron is even disappeared completely.Therefore, the problem of passivation for solving nano zero valence iron has become focal point.
In general, solving the method for the problem of passivation of nano zero valence iron has bimetallic system, pickling, hydrogen or hydroboration
Sodium reduction, ultrasonic method and electrochemical process etc..But these processing methods exist and need to use extra chemical agent, consumption volume
The defect such as outer electric energy and processing requirement height, constrains the application of these processing methods and efficiently making for nano zero valence iron
With.It is ferromagnetic material in view of iron, physicochemical properties may be changed in low-intensity magnetic field, therefore magnetic field is added to
In reaction system, to improve the ability of nano zero valence iron degradation of contaminant.The magnetic field gradient power that magnetic field is produced is tended to nanometer
Paramagnetic ferrous ion is shifted along high magnetic field gradients on zeroth order iron surface, local Galvanic Current is produced, while electromagnetic force
The migration of ion is stimulated, so as to break the passivating film of nano zero-valence iron surface overlying lid and accelerate the corrosion of nano zero valence iron, is made
More electronics are produced in system is used for the degraded of pollutant.Because magnetic field condition is without additionally addition chemical reagent and consumes
Many energy, are a kind of rapid and convenient, environmental protection, the method utilized of environment-friendly reinforced nano Zero-valent Iron, so,
Meaning is had a wide range of applications in practice.
At the same time, because alkaline brown g (Bismarck Brown G) is a kind of basic-dyeable fibre, with lovely luster, have
The fluorescence of kermesinus, tinting strength, tinting power is very strong, is used for the dyeing of the cell dyeing and dye industry of microorganism cultures organ, if
It is discharged into water body, the light transmittance and water body and air oxygen exchange rate of water body can be had a strong impact on, animals and plants in water body are threatened
Growth, so that environmental pollution and ecological disruption are caused, therefore basic-dyeable fibre alkaline brown g waste water needs efficient degradation treatment badly.This
The nano zero valence iron of low-intensity magnetic field conditioned reinforcement green syt is utilized in invention to basic-dyeable fibre alkaline brown g wastewater degradation ability,
Low cost, effect is good, with being more widely applied meaning.
The present invention utilizes purple perilla seed green syt nano zero valence iron, under normal temperature condition, using weak magnetic field condition, enhances
Nano zero valence iron has not only opened up the utilization scope of green surface modifier, has reduced and receive to the degradation capability of alkaline brown g dyestuff
The synthesis cost of rice Zero-valent Iron, while using weak magnetic field condition, improving the nano zero valence iron of synthesis to basic-dyeable fibre alkaline brown g
The degradation capability of waste water from dyestuff, is with a wide range of applications.
The content of the invention
The invention belongs to the processing method for the quick deoxidization, degradation ability for improving waste water from dyestuff, and in particular to be a kind of profit
The application of green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities is improved with weak magnetic field condition.This method utilizes purple first
Perillaseed green syt nano zero valence iron, and weak magnetic field condition is utilized first, improve green syt nano zero valence iron degrading alkaline
The ability of brown G waste water, method simple and fast, environmental protection can reach that dye decolored, degraded, removal dyestuff have in a short time
The purpose of organic pollutants, and drastically increase the Utilization ability of green syt nano zero valence iron.
The purpose of the present invention is achieved through the following technical solutions：
It is a kind of improve green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities method, it is characterised in that including with
Lower step：
After the air-dried purple perilla seed of Exposure to Sunlight is crushed, with 2g/L standard configuration purple perilla seed solution, ultrasound is carried out, preferably ultrasonic work(
After rate is ultrasound 15min under conditions of 50W, filtered with filter paper (preferably Medium speed filter paper), purple perilla seed extract solution is obtained, by purple perilla seed
Extract solution is mixed with concentration for 0.1mol/L soluble divalent iron salt solution, and purple perilla seed extract solution is in above two mixed liquor
Weight/mass percentage composition be 2%wt, with Fe2+:BH4 -Molar ratio be 1:2 condition is slowly added to borohydride solution stirring
Produced to bubble-free, obtain the nano zero valence iron or purple perilla seed-nano zero valence iron suspension of purple perilla seed surface modification.Room temperature with
And in the environment of low-intensity magnetic field, described purple perilla seed-nano zero valence iron suspension is added in alkaline brown g waste water from dyestuff, shake,
Make decoloring dye waste water, degraded, and in the case of nano zero valence iron is degraded completely to alkaline brown g dyestuff, phase is added repeatedly
With the alkaline brown g waste water from dyestuff of condition, until nano zero valence iron is depleted, the most degradation energy of nano zero valence iron is given full play to
Power.
A kind of method of described raising green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities, it is characterised in that：
Purple perilla seed-the nano zero valence iron is suspension, and the dosage for directly applying to decoloring dye waste water degraded is 0.5-2.5g/L.
A kind of method of described raising green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities, it is characterised in that：
Described weak magnetic field condition is provided by magnet, and magnetic field intensity is 20-30mT.
A kind of method of described raising green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities, it is characterised in that：
When reaching more than 99% to alkaline brown g dye wastewater degradation rate, the alkaline brown g waste water from dyestuff of the same terms is added again.
A kind of method of described raising green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities, it is characterised in that：
The waste water from dyestuff pH value is 2-10, and dye strength is 50-1000mg/L.
Compared with the prior art, the beneficial effects of the invention are as follows：
1st, a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities of the present invention, excellent
The process using purple perilla seed green syt nano zero valence iron is changed, it is more quickly and easily prepared the purple perilla worked well
Seed-nano zero valence iron, has widened the material selection range in green syt field, and low cost is environmentally friendly.
2nd, a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities of the present invention, no
Only the nano zero valence iron of green syt inherently has the ability of higher degrading alkaline palm fibre G waste water from dyestuff, and in low-intensity magnetic field
Under the conditions of can be greatly enhanced degradation capability of the nano zero valence iron to alkaline brown g waste water from dyestuff.
3rd, a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities of the present invention,
Under the conditions of differential responses, carry out useless to alkaline brown g dyestuff without green syt nano zero valence iron under the two kinds of environment in magnetic field and low-intensity magnetic field
The degradation capability contrast of water, as a result finds, the nano zero valence iron degrading alkaline palm fibre G waste water from dyestuff of green syt under low-intensity magnetic field environment
Ability be 1.72-2.07 times under no magnetic field environment.
Brief description of the drawings
Fig. 1 is in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G in embodiment 1
The correlation curve of dyestuff degradation capability.
Fig. 2 is in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G in embodiment 2
The correlation curve of dyestuff degradation capability.
Fig. 3 is in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G in embodiment 3
The correlation curve of dyestuff degradation capability.
Fig. 4 is in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G in embodiment 4
The correlation curve of dyestuff degradation capability.
Fig. 5 is in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G in embodiment 5
The correlation curve of dyestuff degradation capability.
Embodiment
The present invention is described in further detail with reference to specific embodiment, but the invention is not limited in implementation
Example.
Embodiment 1
Exposure to Sunlight is air-dried after 2h purple perilla seed crushing, with 2g/L standard configuration purple perilla seed solution, and ultrasonic power is 50W bar
Under part after ultrasound 15min, filtered with Medium speed filter paper, obtain purple perilla seed extract solution, by purple perilla seed extract solution with 2%wt quality point
Number is mixed with 100mL concentration for 0.1mol/L soluble divalent iron salt solution, with Fe2+:BH4 -Molar ratio be 1:2 bar
Part be slowly added to borohydride solution stir to bubble-free produce, obtain purple perilla seed surface modification nano zero valence iron (purple perilla seed-
Nano zero valence iron) suspension.At ambient temperature, respectively under without magnetic field environment and under the conditions of low-intensity magnetic field by described purple perilla
Seed-nano zero valence iron suspension is added to 100mL, pH=2, giving up containing 500mg/L alkaline brown g dyestuffs with 1.5g/L dosage
In water, concussion makes decoloring dye waste water, degraded, and in the case of nano zero valence iron is degraded completely to dyestuff, add repeatedly
100mL, pH=2, the waste water containing 500mg/L alkaline brown g dyestuffs, until nano zero valence iron is depleted, give full play to nanometer
The most degradation ability of Zero-valent Iron.
In the present embodiment, under no magnetic field environment, nano zero valence iron is completed in 25min to waste water neutral and alkali palm fibre G dyestuffs
Deoxidization, degradation, degradation rate is 96.62%；Under low-intensity magnetic field environment, the degradation process first of nano zero valence iron, in 25min
The deoxidization, degradation to waste water neutral and alkali palm fibre G dyestuffs is completed, degradation rate is 99.32%, during recycling, the 2nd time
During utilization, the deoxidization, degradation to waste water neutral and alkali palm fibre G dyestuffs is completed in 22.5min, degradation rate is 84.89%, nano zero-valence
Iron loses degradation capability.From the time, nanometer zero under identical alkaline brown g waste water from dyestuff, no magnetic field and low-intensity magnetic field environment is handled
Valency iron is close to the degradation rate of alkaline brown g waste water from dyestuff；But, from degraded total amount, low-intensity magnetic field environment can make nano zero-valence
Degraded of the iron to alkaline brown g waste water from dyestuff is more thorough, and the degraded for also having the ability to carry out again is utilized, degrading alkaline palm fibre G dyestuffs
Total amount be without 1.91 times under magnetic field condition, improve the ability of nano zero valence iron.
Fig. 1 be the present embodiment in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G dyes
Expect the correlation curve of degradation capability.
Embodiment 2
Exposure to Sunlight is air-dried after 2h purple perilla seed crushing, with 2g/L standard configuration purple perilla seed solution, and ultrasonic power is 50W bar
Under part after ultrasound 15min, filtered with Medium speed filter paper, obtain purple perilla seed extract solution, by purple perilla seed extract solution with 2%wt quality point
Number is mixed with 100mL concentration for 0.1mol/L soluble divalent iron salt solution, with Fe2+:BH4 -Molar ratio be 1:2 bar
Part be slowly added to borohydride solution stir to bubble-free produce, obtain purple perilla seed surface modification nano zero valence iron (purple perilla seed-
Nano zero valence iron) suspension.At ambient temperature, respectively under without magnetic field environment and under the conditions of low-intensity magnetic field by described purple perilla
Seed-nano zero valence iron suspension is added to 100mL, pH=4, giving up containing 750mg/L alkaline brown g dyestuffs with 2.0g/L dosage
In water, concussion makes decoloring dye waste water, degraded, and in the case of nano zero valence iron is degraded completely to dyestuff, add repeatedly
100mL, pH=4, the waste water containing 750mg/L alkaline brown g dyestuffs, until nano zero valence iron is depleted, give full play to nanometer
The most degradation ability of Zero-valent Iron.
In the present embodiment, under no magnetic field environment, nano zero valence iron is completed in 27.5min to be contaminated waste water neutral and alkali palm fibre G
The deoxidization, degradation of material, degradation rate is 89.91%；Under low-intensity magnetic field environment, the degradation process first of nano zero valence iron,
The deoxidization, degradation to waste water neutral and alkali palm fibre G dyestuffs is completed in 27.5min, degradation rate is 99.29%, in the process of recycling
In, during the 2nd utilization, the deoxidization, degradation to waste water neutral and alkali palm fibre G dyestuffs is completed in 22.5min, degradation rate is 63.23%,
Nano zero valence iron loses degradation capability.From the time, identical alkaline brown g waste water from dyestuff, no magnetic field and low-intensity magnetic field environment are handled
Lower nano zero valence iron is close to the degradation rate of alkaline brown g waste water from dyestuff；But, from degraded total amount, low-intensity magnetic field environment can make
Degraded of the nano zero valence iron to alkaline brown g waste water from dyestuff is more thorough, and the degraded for also having the ability to carry out again is utilized, degrading alkaline
The total amount of brown G dyestuffs is, without 1.81 times under magnetic field condition, to improve the ability of nano zero valence iron.
Fig. 2 be the present embodiment in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G dyes
Expect the correlation curve of degradation capability.
Embodiment 3
Exposure to Sunlight is air-dried after 2h purple perilla seed crushing, with 2g/L standard configuration purple perilla seed solution, and ultrasonic power is 50W bar
Under part after ultrasound 15min, filtered with Medium speed filter paper, obtain purple perilla seed extract solution, by purple perilla seed extract solution with 2%wt quality point
Number is mixed with 100mL concentration for 0.1mol/L soluble divalent iron salt solution, with Fe2+:BH4 -Molar ratio be 1:2 bar
Part be slowly added to borohydride solution stir to bubble-free produce, obtain purple perilla seed surface modification nano zero valence iron (purple perilla seed-
Nano zero valence iron) suspension.At ambient temperature, respectively under without magnetic field environment and under the conditions of low-intensity magnetic field by described purple perilla
Seed-nano zero valence iron suspension is added to 100mL, pH=6, containing 1000mg/L alkaline brown g dyestuffs with 2.5g/L dosage
In waste water, concussion makes decoloring dye waste water, degraded, and in the case of nano zero valence iron is degraded completely to dyestuff, adds repeatedly
Enter 100mL, pH=6, the waste water containing 1000mg/L alkaline brown g dyestuffs, until nano zero valence iron is depleted, gives full play to and receive
The most degradation ability of rice Zero-valent Iron.
In the present embodiment, under no magnetic field environment, nano zero valence iron is completed in 27.5min to be contaminated waste water neutral and alkali palm fibre G
The deoxidization, degradation of material, degradation rate is 85.11%；Under low-intensity magnetic field environment, the degradation process first of nano zero valence iron,
The deoxidization, degradation to waste water neutral and alkali palm fibre G dyestuffs is completed in 27.5min, degradation rate is 99.49%, in the process of recycling
In, during the 2nd utilization, the deoxidization, degradation to waste water neutral and alkali palm fibre G dyestuffs is completed in 30min, degradation rate is 77.06%, is received
Rice Zero-valent Iron loses degradation capability.From the time, handle under identical alkaline brown g waste water from dyestuff, no magnetic field and low-intensity magnetic field environment
Nano zero valence iron is close to the degradation rate of alkaline brown g waste water from dyestuff；But, from degraded total amount, low-intensity magnetic field environment can make to receive
Degraded of the rice Zero-valent Iron to alkaline brown g waste water from dyestuff is more thorough, and the degraded for also having the ability to carry out again is utilized, degrading alkaline palm fibre
The total amount of G dyestuffs is, without 2.07 times under magnetic field condition, to improve the ability of nano zero valence iron.
Fig. 3 be the present embodiment in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G dyes
Expect the correlation curve of degradation capability.
Embodiment 4
Exposure to Sunlight is air-dried after 2h purple perilla seed crushing, with 2g/L standard configuration purple perilla seed solution, and ultrasonic power is 50W bar
Under part after ultrasound 15min, filtered with Medium speed filter paper, obtain purple perilla seed extract solution, by purple perilla seed extract solution with 2%wt quality point
Number is mixed with 100mL concentration for 0.1mol/L soluble divalent iron salt solution, with Fe2+:BH4 -Molar ratio be 1:2 bar
Part be slowly added to borohydride solution stir to bubble-free produce, obtain purple perilla seed surface modification nano zero valence iron (purple perilla seed-
Nano zero valence iron) suspension.At ambient temperature, respectively under without magnetic field environment and under the conditions of low-intensity magnetic field by described purple perilla
Seed-nano zero valence iron suspension is added to 100mL, pH=8, giving up containing 50mg/L alkaline brown g dyestuffs with 0.5g/L dosage
In water, concussion makes decoloring dye waste water, degraded, and in the case of nano zero valence iron is degraded completely to dyestuff, add repeatedly
100mL, pH=8, the waste water containing 50mg/L alkaline brown g dyestuffs, until nano zero valence iron is depleted, give full play to nanometer zero
The most degradation ability of valency iron.
In the present embodiment, under no magnetic field environment, nano zero valence iron is completed in 20.0min to be contaminated waste water neutral and alkali palm fibre G
The deoxidization, degradation of material, degradation rate is 99.01%；During recycling, during the 2nd utilization, degraded energy is lost in 20min
Power, degradation rate is 83.02%.Under low-intensity magnetic field environment, the degradation process first of nano zero valence iron is completed pair in 15min
The deoxidization, degradation of waste water neutral and alkali palm fibre G dyestuffs, degradation rate is 99.20%, during recycling, during the 2-3 times utilization,
The deoxidization, degradation to waste water neutral and alkali palm fibre G dyestuffs is completed in 15min and 17.5min respectively, degradation rate is respectively 99.25% He
99.29%, when the 4th is utilized, nano zero valence iron loses degradation capability in 15min, and degradation rate is 77.16%.From the time
On, identical alkaline brown g waste water from dyestuff is handled, nano zero valence iron is to alkaline brown g waste water from dyestuff under no magnetic field and low-intensity magnetic field environment
Degradation rate it is close；But, from degraded total amount, low-intensity magnetic field environment can make nano zero valence iron to alkaline brown g waste water from dyestuff
Degraded more thoroughly, also has the ability to degrade to more alkaline brown g dyestuffs, and the total amount of degrading alkaline palm fibre G dyestuffs is without magnetic field bar
2.05 times under part, improve the ability of nano zero valence iron.
Fig. 4 be the present embodiment in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G dyes
Expect the correlation curve of degradation capability.
Embodiment 5
Exposure to Sunlight is air-dried after 2h purple perilla seed crushing, with 2g/L standard configuration purple perilla seed solution, and ultrasonic power is 50W bar
Under part after ultrasound 15min, filtered with Medium speed filter paper, obtain purple perilla seed extract solution, by purple perilla seed extract solution with 2%wt quality point
Number is mixed with 100mL concentration for 0.1mol/L soluble divalent iron salt solution, with Fe2+:BH4 -Molar ratio be 1:2 bar
Part be slowly added to borohydride solution stir to bubble-free produce, obtain purple perilla seed surface modification nano zero valence iron (purple perilla seed-
Nano zero valence iron) suspension.At ambient temperature, respectively under without magnetic field environment and under the conditions of low-intensity magnetic field by described purple perilla
Seed-nano zero valence iron suspension is added to 100mL, pH=10, containing 250mg/L alkaline brown g dyestuffs with 1.0g/L dosage
In waste water, concussion makes decoloring dye waste water, degraded, and in the case of nano zero valence iron is degraded completely to dyestuff, adds repeatedly
Enter 100mL, pH=10, the waste water containing 250mg/L alkaline brown g dyestuffs, until nano zero valence iron is depleted, gives full play to and receive
The most degradation ability of rice Zero-valent Iron.
In the present embodiment, under no magnetic field environment, nano zero valence iron is completed in 22.5min to be contaminated waste water neutral and alkali palm fibre G
The deoxidization, degradation of material, degradation rate is 99.00%；During recycling, during the 2nd utilization, degraded is lost in 17.5min
Ability, degradation rate is 63.61%.Under low-intensity magnetic field environment, the degradation process first of nano zero valence iron is completed in 20min
To the deoxidization, degradation of waste water neutral and alkali palm fibre G dyestuffs, degradation rate is 99.05%, during recycling, during the 2nd utilization,
The deoxidization, degradation to waste water neutral and alkali palm fibre G dyestuffs is completed in 20min, degradation rate is respectively 99.12%, when utilizing for the 3rd time,
Nano zero valence iron loses degradation capability in 15min, and degradation rate is 80.12%.From the time, processing identical alkaline brown g dye
Expect that nano zero valence iron is close to the degradation rate of alkaline brown g waste water from dyestuff under waste water, no magnetic field and low-intensity magnetic field environment；But, from
In total amount of degrading, low-intensity magnetic field environment can make degraded of the nano zero valence iron to alkaline brown g waste water from dyestuff more thorough, also have the ability to more
Many alkaline brown g dyestuffs are degraded, and the total amount of degrading alkaline palm fibre G dyestuffs is, without 1.72 times under magnetic field condition, to improve nanometer
The ability of Zero-valent Iron.
Fig. 5 be the present embodiment in without magnetic field and low-intensity magnetic field environment, the nano zero valence iron of synthesis is to waste water neutral and alkali palm fibre G dyes
Expect the correlation curve of degradation capability.
Claims (6)
1. a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities, it is characterised in that including following
Step：
After the air-dried purple perilla seed of Exposure to Sunlight is crushed, with 2g/L standard configuration purple perilla seed solution, ultrasound is carried out, is filtered, obtained with filter paper
To purple perilla seed extract solution, purple perilla seed extract solution is mixed with concentration for 0.1mol/L soluble divalent iron salt solution, purple perilla seed
Weight/mass percentage composition of the extract solution in above two mixed liquor is 2%wt, with Fe2+:BH4 -Molar ratio be 1:2 condition
Be slowly added to borohydride solution stir to bubble-free produce, obtain purple perilla seed surface modification nano zero valence iron or purple perilla seed-
Nano zero valence iron suspension；In the environment of room temperature and low-intensity magnetic field, described purple perilla seed-nano zero valence iron suspension is added
Into alkaline brown g waste water from dyestuff, concussion makes decoloring dye waste water, degraded, and alkaline brown g dyestuff is dropped in nano zero valence iron
In the case of solution is complete, the alkaline brown g waste water from dyestuff of the same terms is added repeatedly, until nano zero valence iron is depleted, fully
Play the most degradation ability of nano zero valence iron.
2. a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities according to claim 1,
It is characterized in that：Purple perilla seed-the nano zero valence iron is suspension, and the dosage for directly applying to decoloring dye waste water degraded is
0.5-2.5g/L。
3. a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities according to claim 1,
It is characterized in that：Described weak magnetic field condition is provided by magnet, and magnetic field intensity is 20-30mT.
4. a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities according to claim 1,
It is characterized in that：When reaching more than 99% to alkaline brown g dye wastewater degradation rate, the alkaline brown g dye of the same terms is added again
Material waste water is degraded.
5. a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities according to claim 1,
It is characterized in that：The waste water from dyestuff pH value is 6-10, and dye strength is 50-1000mg/L.
6. a kind of method for improving green syt nano zero valence iron degrading alkaline palm fibre G waste water abilities according to claim 1,
It is characterized in that：Ultrasound condition is that ultrasonic power is ultrasound 15min under conditions of 50W.
Priority Applications (1)
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| CN109732098A (en) * | 2019-02-20 | 2019-05-10 | 北京工业大学 | A method of utilizing pine bark green modified Nano iron bimetallic ruthenium/tin particle |
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| CN105859015A (en) * | 2016-05-27 | 2016-08-17 | 山东大学 | Method for removing orange yellow I in printing and dyeing wastewater by using sulfurized modified zero-valent iron material under effect of low-intensity magnetic field |
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| CN109732098A (en) * | 2019-02-20 | 2019-05-10 | 北京工业大学 | A method of utilizing pine bark green modified Nano iron bimetallic ruthenium/tin particle |
| CN109732098B (en) * | 2019-02-20 | 2022-01-28 | 北京工业大学 | Method for green modification of nano-iron-tin bimetallic particles by using pine bark |
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