CN109107542A - A kind of preparation method and phosphorus removing method of composite adsorption dephosphorization agent - Google Patents
A kind of preparation method and phosphorus removing method of composite adsorption dephosphorization agent Download PDFInfo
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- CN109107542A CN109107542A CN201811097123.6A CN201811097123A CN109107542A CN 109107542 A CN109107542 A CN 109107542A CN 201811097123 A CN201811097123 A CN 201811097123A CN 109107542 A CN109107542 A CN 109107542A
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/00—Nature of the contaminant
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Abstract
The invention discloses the preparation methods and phosphorus removing method of a kind of composite adsorption dephosphorization agent, by polyphosphazene polymer amidine, hydrous zirconium oxide(HZO) in conjunction with stannic oxide/graphene nano material, graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent is prepared, a large amount of positive charges are had in the graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent, effectively by together as one the advantages of poly- amidine, hydrous zirconium oxide(HZO) and graphene oxide, absorption property and practical application value are improved.Graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine is a kind of novel high molecule nano composite material in the present invention.Meanwhile preparation process is easy and cost is relatively low.
Description
Technical field
The present invention relates to nano-functional material, high molecular material and technical field of environmental material preparation, more particularly to one kind
The preparation method and phosphorus removing method of composite adsorption dephosphorization agent.
Background technique
Increasingly increase as the mankind are movable to environmental resource development and utilization, a large amount of nitrogenous, phosphorus nutrition substance lives are dirty
Water, industrial wastewater are discharged into rivers and lakes, increase the load of water nutrition substance, have been more than water body self-purification ability, directly
Consequence is water eutrophication.The direct result of water eutrophication is algae class excessive vegetative growth, consumes the oxygen in a large amount of water bodys,
Cause the aquatic organisms such as fish, shellfish because of hypoxia death；Eutrophication deteriorate source quality, increase water process difficulty and at
This；Eutrophication deteriorates water body sense organ, reduces the aesthetic values of water body.Therefore, water body excess P elements are removed, for drop
Low water eutrophication, mitigation water factory's processing load, improvement water environment are of great significance.
Common processing method has chemical precipitation method, bioanalysis, ion-exchange, membrane separation process and absorption method etc..Chemistry
Method is to generate indissoluble sediment by the phosphate added in chemical precipitation agent and waste water, but if longtime running, chemistry is heavy
Adding for shallow lake agent can cause pH value to rise, and form dirty piece, can also generate a certain amount of sludge.Bioanalysis is using microorganism good
Phosphorus is absorbed under oxygen condition, releases this principle of phosphorus under anaerobic state existing for organic matter to handle phosphorus.Bioanalysis has good
Treatment effect, but treatment conditions are harsh, higher cost.Ion-exchange be using strong-base anion-exchange resin, and it is useless
Phosphate radical anion in water swaps reaction, the method that will be removed in phosphate radical anion displacement to exchanger.But
The price of ion exchange resin is higher, and operating cost is higher.Membrane technology dephosphorization efficiency is high, but cost and technical requirements are also very high.
Absorption method due to simple process, it is easy to operate the advantages that and receive much attention.In absorption method research, finding new adsorbent is out
The key point for the dephosphorization process for sending out new.
Summary of the invention
The present invention provides the preparation method and phosphorus removing method of a kind of composite adsorption dephosphorization agent, with solve dephosphorization cost and
The problem of effect.
In a first aspect, the present invention provides a kind of preparation methods of composite adsorption dephosphorization agent, comprising the following steps:
(1) by graphene oxide in ultrapure water ultrasonic disperse 2h, obtain graphene oxide dispersion.
(2) by ZrOCl2·8H2After O is dissolved in ultrapure water, it is slowly added in the graphene oxide dispersion, 50
2h is stirred at DEG C, and pH to 10 is adjusted with NaOH；It is slow added into hydrazine hydrate, stirs 2-5h at 70-110 DEG C；It is cooled to room
Wen Hou, with ultrapure water to neutrality, vacuum freeze drying 2 days spare, and graphene oxide/hydrous zirconium oxide(HZO) is made.
(3) N- vinyl formamide and acrylonitrile are added in round-bottomed flask, round-bottomed flask is placed in 40-60 DEG C of thermostatted water
In bath, lead to high pure nitrogen deoxygenation 15min, ultrapure water is added, continues logical nitrogen 20min, under conditions of continuing logical nitrogen slowly
Azo-bis-isobutyrate hydrochloride solution is added dropwise, continues logical nitrogen 5min after being added dropwise, then reaction 3-7h is made in a water bath
Midbody polymer is dried under vacuum to constant weight.
(4) graphene oxide/hydrous zirconium oxide(HZO) obtained and the midbody polymer are added in hydrochloric acid, are set
It is persistently stirred to react 3-7h in 80-120 DEG C of oil bath, is slowly poured into acetone soln after products therefrom is cooling, solid is precipitated and produces
Solid product is placed in a vacuum drying oven 40 DEG C of vacuum drying, it is compound to obtain graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine by object
Adsorption and dephosphorization agent.
Optionally, the composite adsorption dephosphorization agent preparation method the following steps are included:
(1) by 0.1-0.5g graphene oxide in 200mL ultrapure water ultrasonic disperse 2h, obtain graphene oxide dispersion
Liquid.
(2) by 15-30g ZrOCl2·8H2After O is dissolved in 200mL ultrapure water, it is slowly added to the graphene oxide point
In dispersion liquid, 2h is stirred at 50 DEG C, pH to 10 is adjusted with NaOH；2-4mL hydrazine hydrate is slowly added dropwise again, is stirred at 70-110 DEG C
2-5h；After being cooled to room temperature, with ultrapure water to neutrality, vacuum freeze drying 2 days spare, and graphene oxide/water is made
Close zirconium oxide.
(3) be (0.5-2) by molar ratio: 1 N- vinyl formamide and acrylonitrile is added to be formed in round-bottomed flask and mix
Round-bottomed flask is placed in 40-60 DEG C of water bath with thermostatic control by solution, leads to high pure nitrogen deoxygenation 15min, and 4-8 times of mixed solution body is added
Long-pending ultrapure water continues logical nitrogen 20min, 0.2-0.5% times of mixed solution matter is slowly added dropwise under conditions of continuing logical nitrogen
The azo-bis-isobutyrate hydrochloride solution of amount continues logical nitrogen 5min after being added dropwise, then reaction 3-7h is made in a water bath
Midbody polymer is dried under vacuum to constant weight.
(4) graphene oxide/hydrous zirconium oxide(HZO) for weighing 0.1-0.5g, mixes with the midbody polymer, adds
Enter the concentrated hydrochloric acid of 0.5-1.5 times of mixed solution molar equivalent and the ultrapure water of 1-4 times of mixed solution quality, is placed in 80-120 DEG C of oil
It is persistently stirred to react 3-7h in bath, is slowly poured into acetone soln after products therefrom is cooling, solid product is precipitated, by solid product
40 DEG C of vacuum drying are placed in a vacuum drying oven, graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent is obtained.
On the other hand, present invention offer additionally provides the phosphorus removing method of above-mentioned composite adsorption dephosphorization agent, comprising the following steps:
It weighs graphene oxide/hydrous zirconium oxide(HZO) described in 0.1-1g/poly- amidine composite adsorption dephosphorization agent and is added to the phosphorous molten of 1-15mg/L
In liquid, rear water bath with thermostatic control oscillation 12h is mixed well, after reaching adsorption equilibrium, centrifugal filtration, filtrate is measured using molybdenum blue colorimetric method
Phosphorus concentration calculates adsorbance.
The invention has the following advantages:
By polyphosphazene polymer amidine, hydrous zirconium oxide(HZO) in conjunction with stannic oxide/graphene nano material, poly- amidine contains largely just the present invention
Charge, surface of graphene oxide are existed rich in the elecrtonegativities functional groups such as hydroxyl, carboxyl, the two by hydrogen bond and electrostatic attraction self assembly
Together, graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent, the graphene oxide/aqua oxidation is prepared
On the one hand a large amount of positive charges are had in zirconium/poly- amidine composite adsorption dephosphorization agent, and the phosphorus of negative valency in water can be adsorbed by electrostatic interaction
The hydrous oxide of acid group, another aspect metal zirconium has good adsorption effect to the phosphorus in water, huge in conjunction with graphene oxide
Big specific surface area synergistic effect is to obtain good phosphor-removing effect.Effectively by poly- amidine, hydrous zirconium oxide(HZO) and graphite oxide
The advantages of alkene together as one, improve absorption property and practical application value.Graphene oxide/hydrous zirconium oxide(HZO) in the present invention/
Poly- amidine is a kind of novel high molecule nano composite material.Meanwhile preparation process is easy and cost is relatively low.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Specific embodiment
The present invention provides the preparation method and phosphorus removing method of a kind of composite adsorption dephosphorization agent, with solve dephosphorization cost and
The problem of effect.The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described reality
Applying example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff every other embodiment obtained without making creative work belongs to what the present invention protected
Range.
Embodiment 1
A kind of preparation method for composite adsorption dephosphorization agent that the present embodiment 1 provides, comprising the following steps:
(1) by 0.1g graphene oxide in 200mL ultrapure water ultrasonic disperse 2h, obtain graphene oxide dispersion.
(2) by 15g ZrOCl2After 8H2O is dissolved in 200mL ultrapure water, it is slowly added to the graphene oxide dispersion
In liquid, 2h is stirred at 50 DEG C, pH to 10 is adjusted with NaOH；2mL hydrazine hydrate is slowly added dropwise again, stirs 2h at 70 DEG C；To cold
But to after room temperature, with ultrapure water to neutrality, vacuum freeze drying 2 days spare, and graphene oxide/hydrous zirconium oxide(HZO) is made.
(3) N- vinyl formamide and acrylonitrile that molar ratio is 0.5:1 are added in round-bottomed flask and form mixed solution,
Round-bottomed flask is placed in 40 DEG C of waters bath with thermostatic control, leads to high pure nitrogen deoxygenation 15min, the ultrapure water of 4 times of mixed liquor volumes is added,
Continue logical nitrogen 20min, two NSC 18620 of azo of 0.2% times of mixed solution quality is slowly added dropwise under conditions of continuing logical nitrogen
HCI solution continues logical nitrogen 5min after being added dropwise, then midbody polymer is made in reaction 3h in a water bath, and vacuum is dry
It is dry to constant weight.
(4) graphene oxide/hydrous zirconium oxide(HZO) for weighing 0.1g, mixes with the midbody polymer, is added 0.5
It is anti-to be placed in 80 DEG C of oil baths persistently stirring for times concentrated hydrochloric acid of mixed solution molar equivalent and the ultrapure water of 1 times of mixed solution quality
It is slowly poured into acetone soln after answering 3h, products therefrom cooling, solid product is precipitated, solid product is placed in a vacuum drying oven
40 DEG C of vacuum drying, obtain graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent.
Embodiment 2
The preparation method for another composite adsorption dephosphorization agent that the present embodiment 2 provides, comprising the following steps:
(1) by 0.3g graphene oxide in 200mL ultrapure water ultrasonic disperse 2h, obtain graphene oxide dispersion.
(2) by 20g ZrOCl2·8H2After O is dissolved in 200mL ultrapure water, it is slowly added to the graphene oxide dispersion
In liquid, 2h is stirred at 50 DEG C, pH to 10 is adjusted with NaOH；3mL hydrazine hydrate is slowly added dropwise again, stirs 3.5h at 90 DEG C；To
After being cooled to room temperature, with ultrapure water to neutrality, vacuum freeze drying 2 days spare, and graphene oxide/aqua oxidation is made
Zirconium.
(3) N- vinyl formamide and acrylonitrile that molar ratio is 1:1 are added in round-bottomed flask and form mixed solution, it will
Round-bottomed flask is placed in 50 DEG C of waters bath with thermostatic control, leads to high pure nitrogen deoxygenation 15min, the ultrapure water of 6 times of mixed liquor volumes is added, after
Continuous logical nitrogen 20min, is slowly added dropwise two NSC 18620 of azo of 0.35% times of mixed solution quality under conditions of continuing logical nitrogen
HCI solution continues logical nitrogen 5min after being added dropwise, then midbody polymer is made in reaction 5h in a water bath, and vacuum is dry
It is dry to constant weight.
(4) graphene oxide/hydrous zirconium oxide(HZO) for weighing 0.3g, mixes with the midbody polymer, is added 1 times
The ultrapure water of the concentrated hydrochloric acid of mixed solution molar equivalent and 2 times of mixed solution quality is placed in 100 DEG C of oil baths and is persistently stirred to react
5h is slowly poured into acetone soln after products therefrom is cooling, solid product is precipitated, solid product is placed in a vacuum drying oven 40
DEG C vacuum drying, obtain graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent.
Embodiment 3
The preparation method for another composite adsorption dephosphorization agent that the present embodiment 3 provides, comprising the following steps:
(1) by 0.5g graphene oxide in 200mL ultrapure water ultrasonic disperse 2h, obtain graphene oxide dispersion.
(2) by 30g ZrOCl2·8H2After O is dissolved in 200mL ultrapure water, it is slowly added to the graphene oxide dispersion
In liquid, 2h is stirred at 50 DEG C, pH to 10 is adjusted with NaOH；4mL hydrazine hydrate is slowly added dropwise again, stirs 5h at 110 DEG C；To cold
But to after room temperature, with ultrapure water to neutrality, vacuum freeze drying 2 days spare, and graphene oxide/hydrous zirconium oxide(HZO) is made.
(3) N- vinyl formamide and acrylonitrile that molar ratio is 2:1 are added in round-bottomed flask and form mixed solution, it will
Round-bottomed flask is placed in 60 DEG C of waters bath with thermostatic control, leads to high pure nitrogen deoxygenation 15min, the ultrapure water of 8 times of mixed liquor volumes is added, after
Continuous logical nitrogen 20min, is slowly added dropwise the two NSC 18620 salt of azo of 0.5% times of mixed solution quality under conditions of continuing logical nitrogen
Acid salt solution continues logical nitrogen 5min after being added dropwise, then midbody polymer, vacuum drying is made in reaction 7h in a water bath
To constant weight.
(4) graphene oxide/hydrous zirconium oxide(HZO) for weighing 0.5g, mixes with the midbody polymer, is added 1.5
It is anti-to be placed in 120 DEG C of oil baths persistently stirring for times concentrated hydrochloric acid of mixed solution molar equivalent and the ultrapure water of 4 times of mixed solution quality
It is slowly poured into acetone soln after answering 7h, products therefrom cooling, solid product is precipitated, solid product is placed in a vacuum drying oven
40 DEG C of vacuum drying, obtain graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent.
Comparative example 1
The preparation method for the dephosphorization agent that this comparative example 1 provides, comprising the following steps:
(1) by 0.1g graphene oxide, 15g ZrOCl2·8H2O mixing, disperses, vacuum freeze drying 2 in ultrapure water
It is spare, and graphene oxide/hydrous zirconium oxide(HZO) is made.
(2) N- vinyl formamide and acrylonitrile that molar ratio is 0.5:1 are added in round-bottomed flask and form mixed solution,
Round-bottomed flask is placed in 40 DEG C of waters bath with thermostatic control, leads to high pure nitrogen deoxygenation 15min, the ultrapure water of 4 times of mixed liquor volumes is added,
Continue logical nitrogen 20min, two NSC 18620 of azo of 0.2% times of mixed solution quality is slowly added dropwise under conditions of continuing logical nitrogen
HCI solution continues logical nitrogen 5min after being added dropwise, then midbody polymer is made in reaction 3h in a water bath, and vacuum is dry
It is dry to constant weight.
(3) concentrated hydrochloric acid and 1 times of mixed solution of 0.5 times of mixed solution molar equivalent are added in the midbody polymer
The ultrapure water of quality is placed in 80 DEG C of oil baths and is persistently stirred to react 3h, slowly pours into acetone soln, analyses after products therefrom is cooling
Solid product is placed in a vacuum drying oven vacuum drying by solid product out, obtains the poly- amidine of solid.
(4) 0.1g graphene oxide/hydrous zirconium oxide(HZO) is dispersed in 20mL ultrapure water, and ultrasound is uniformly, with described solid
The poly- amidine of body prepares the poly- amidine solution of 0.3wt%, pours into graphene oxide/hydrous zirconium oxide(HZO) and stirs for 24 hours, pours into Hydrophobic glass device
In ware, 40 DEG C are dried in vacuo obtained dephosphorization agent.
The present invention also provides a kind of phosphorus removing methods, comprising the following steps: weighs 0.1-1g above-described embodiment and comparative example
The dephosphorization agent of offer is added in the solution containing phosphate of 1-15mg/L, is mixed well rear water bath with thermostatic control oscillation 12h, is reached adsorption equilibrium
Afterwards, centrifugal filtration, filtrate measure phosphorus concentration using molybdenum blue colorimetric method, calculate adsorbance.
In order to compare to phosphor-removing effect, the dephosphorization agent addition for weighing 1g above-described embodiment and comparative example offer is identical
In solution containing phosphate (10mg/L), rear water bath with thermostatic control oscillation 12h is mixed well, after reaching adsorption equilibrium, centrifugal filtration, filtrate is used
Molybdenum blue colorimetric method measures phosphorus concentration.Phosphor-removing effect comparison is as follows:
The phosphor-removing effect contrast table for the dephosphorization agent that each embodiment and comparative example provides
| Dephosphorization agent type | Phosphorus content (mg/L) in solution after dephosphorization |
| Embodiment 1 | 0.25 |
| Embodiment 2 | 0.32 |
| Embodiment 3 | 0.23 |
| Comparative example 1 | 2.41 |
It can be obtained by the result of embodiment 1 and comparative example 1 in upper table, merely by the poly- amidine of solid, hydrous zirconium oxide(HZO) and oxidation stone
The dephosphorization agent phosphor-removing effect that black alkene is mixed to get can not show a candle to the present invention with one pot step by step addition method by polyphosphazene polymer amidine, aqua oxidation
Zirconium obtains graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent in conjunction with stannic oxide/graphene nano material.This explanation
Simple mixing does not ensure that the phosphor-removing effect of dephosphorization agent.
Invention described above embodiment is not intended to limit the scope of the present invention..
Those skilled in the art will readily occur to of the invention its after considering specification and the disclosure invented here of practice
Its embodiment.The present invention is directed to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
Claims (3)
1. a kind of preparation method of composite adsorption dephosphorization agent, which comprises the following steps:
(1) by graphene oxide in ultrapure water ultrasonic disperse 2h, obtain graphene oxide dispersion；
(2) by ZrOCl2·8H2It after O is dissolved in ultrapure water, is slowly added in the graphene oxide dispersion, at 50 DEG C
2h is stirred, pH to 10 is adjusted with NaOH；It is slow added into hydrazine hydrate, stirs 2-5h at 70-110 DEG C；After being cooled to room temperature,
With ultrapure water to neutrality, vacuum freeze drying 2 days spare, and graphene oxide/hydrous zirconium oxide(HZO) is made；
(3) N- vinyl formamide and acrylonitrile are added in round-bottomed flask, round-bottomed flask is placed in 40-60 DEG C of water bath with thermostatic control
In, lead to high pure nitrogen deoxygenation 15min, ultrapure water is added, continues logical nitrogen 20min, slowly dripped under conditions of continuing logical nitrogen
Add azo-bis-isobutyrate hydrochloride solution, continue logical nitrogen 5min after being added dropwise, during then reaction 3-7h is made in a water bath
Mesosome polymer, is dried under vacuum to constant weight；
(4) graphene oxide/hydrous zirconium oxide(HZO) obtained and the midbody polymer are added in hydrochloric acid, are placed in
It is persistently stirred to react 3-7h in 80-120 DEG C of oil bath, is slowly poured into acetone soln after products therefrom is cooling, solid product is precipitated,
Solid product is placed in a vacuum drying oven 40 DEG C of vacuum drying, obtains graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption
Dephosphorization agent.
2. the preparation method of composite adsorption dephosphorization agent according to claim 1, which comprises the following steps:
(1) by 0.1-0.5g graphene oxide in 200mL ultrapure water ultrasonic disperse 2h, obtain graphene oxide dispersion；
(2) by 15-30g ZrOCl2·8H2After O is dissolved in 200mL ultrapure water, it is slowly added to the graphene oxide dispersion
In, 2h is stirred at 50 DEG C, pH to 10 is adjusted with NaOH；2-4mL hydrazine hydrate is slowly added dropwise again, stirs 2- at 70-110 DEG C
5h；After being cooled to room temperature, with ultrapure water to neutrality, vacuum freeze drying 2 days spare, and graphene oxide/hydration is made
Zirconium oxide；
(3) be (0.5-2) by molar ratio: 1 N- vinyl formamide and acrylonitrile is added in round-bottomed flask and forms mixed solution,
Round-bottomed flask is placed in 40-60 DEG C of water bath with thermostatic control, high pure nitrogen deoxygenation 15min is led to, the super of 4-8 times of mixed liquor volume is added
Pure water continues logical nitrogen 20min, the idol of 0.2-0.5% times of mixed solution quality is slowly added dropwise under conditions of continuing logical nitrogen
Two NSC 18620 HCI solution of nitrogen continues logical nitrogen 5min after being added dropwise, then intermediate is made in reaction 3-7h in a water bath
Polymer is dried under vacuum to constant weight；
(4) graphene oxide/hydrous zirconium oxide(HZO) for weighing 0.1-0.5g, mixes with the midbody polymer, is added
The concentrated hydrochloric acid of 0.5-1.5 times of mixed solution molar equivalent and the ultrapure water of 1-4 times of mixed solution quality, are placed in 80-120 DEG C of oil bath
In be persistently stirred to react 3-7h, slowly poured into acetone soln after products therefrom is cooling, solid product be precipitated, solid product is set
40 DEG C of vacuum drying in a vacuum drying oven, obtain graphene oxide/hydrous zirconium oxide(HZO)/poly- amidine composite adsorption dephosphorization agent.
3. a kind of phosphorus removing method for the composite adsorption dephosphorization agent being prepared such as any one of claim 1-2, which is characterized in that packet
It includes following steps: weighing graphene oxide/hydrous zirconium oxide(HZO) described in 0.1-1g/poly- amidine composite adsorption dephosphorization agent and be added to 1-
In the solution containing phosphate of 15mg/L, rear water bath with thermostatic control oscillation 12h is mixed well, after reaching adsorption equilibrium, centrifugal filtration, filtrate is used
Molybdenum blue colorimetric method measures phosphorus concentration, calculates adsorbance.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113750964A (en) * | 2021-09-24 | 2021-12-07 | 哈尔滨工业大学 | Preparation method of lanthanum-loaded graphene aerogel phosphorus adsorbent |
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| CN105032348A (en) * | 2015-07-07 | 2015-11-11 | 中国科学院水生生物研究所 | Reduced graphene oxide/nano zirconium dioxide composite adsorption phosphorous removing agent and preparation method thereof |
| CN106000297A (en) * | 2016-05-10 | 2016-10-12 | 郑州大学 | Graphene loaded zirconium oxide composite material, preparing method thereof, and application thereof as desulfurizer adsorbent |
| CN107262064A (en) * | 2017-07-26 | 2017-10-20 | 浙江大学 | A kind of preparation method of daiamid grafted graphene oxide cladded type biological micromolecule adsorbent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103861559A (en) * | 2014-03-12 | 2014-06-18 | 陕西科技大学 | Zirconia-modified graphene and method for removing fluorine ions in water |
| CN105032348A (en) * | 2015-07-07 | 2015-11-11 | 中国科学院水生生物研究所 | Reduced graphene oxide/nano zirconium dioxide composite adsorption phosphorous removing agent and preparation method thereof |
| CN106000297A (en) * | 2016-05-10 | 2016-10-12 | 郑州大学 | Graphene loaded zirconium oxide composite material, preparing method thereof, and application thereof as desulfurizer adsorbent |
| CN107262064A (en) * | 2017-07-26 | 2017-10-20 | 浙江大学 | A kind of preparation method of daiamid grafted graphene oxide cladded type biological micromolecule adsorbent |
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| CN113750964A (en) * | 2021-09-24 | 2021-12-07 | 哈尔滨工业大学 | Preparation method of lanthanum-loaded graphene aerogel phosphorus adsorbent |
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