CN112759026A - Water treatment method for absorbing humic acid in water by using metal organic framework HKUST-1 - Google Patents

Water treatment method for absorbing humic acid in water by using metal organic framework HKUST-1 Download PDF

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CN112759026A
CN112759026A CN202011366798.3A CN202011366798A CN112759026A CN 112759026 A CN112759026 A CN 112759026A CN 202011366798 A CN202011366798 A CN 202011366798A CN 112759026 A CN112759026 A CN 112759026A
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humic acid
hkust
water
solution
adsorption
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马晓雁
王红
王磊
朱丽丹
宋亚丽
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Zhejiang University of Technology ZJUT
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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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • 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
    • B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
    • B01J20/226—Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3425—Regenerating or reactivating of sorbents or filter aids comprising organic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
    • B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
    • 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
    • C02F2101/34—Organic compounds containing oxygen
    • 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
    • C02F2101/38—Organic compounds containing nitrogen

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  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Physics & Mathematics (AREA)
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  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention provides a water treatment method for absorbing humic acid in water by using a metal organic framework material HKUST-1, which is characterized in that a solvent thermal method is adopted to prepare an absorbing material 1, 3, 5-copper benzenetricarboxylate (HKUST-1), the pH value of the solution is 5 at 298K, the adding amount of the HKUST-1 is 0.6g/L, 5mg/L of humic acid solution is absorbed for 120min, the removal rate can reach 100% at most, and the absorption capacity is 8.33 mg/g. The adsorption of the HKUST-1 on the humic acid conforms to a Langmuir adsorption isotherm model, the adsorption is monomolecular layer adsorption, and the theoretical saturated adsorption capacity can reach 16.385 mg/g. The quasi-second-order kinetic model can well describe the adsorption kinetics of the HKUST-1 on the humic acid in the water. The adsorption of humic acid by HKUST-1 is a spontaneous, disordered endothermic process. The desorption regeneration result shows that HKUST-1 has good regeneration performance and can be repeatedly used. The application of HKUST-1 in water treatment can develop a new way for treating micro-pollution of surface water sources characterized by high content of traditional organic matters, and has ideal adsorption application prospect.

Description

Water treatment method for absorbing humic acid in water by using metal organic framework HKUST-1
Technical Field
The invention belongs to the technical field of environmental engineering, and particularly relates to a water treatment method for adsorbing humic acid in water by using a metal organic framework HKUST-1.
Technical Field
Humic Acid (HA) is a supermolecular structure formed by linking micromolecules with heterogeneous functions through weak hydrophobic effect and hydrogen bonds, and can be adsorbed and complexed with heavy metals to form organic combined pollutants, so that the self-purification capacity of a water body is reduced. Humic acid is rich in halogenated reactive sites and is the main precursor of disinfection by-products (DBPs) in drinking water. More than 700 kinds of DBPs, Trihalomethanes (THMs) and haloacetic acids (HAAs) have been identified in drinking water so far as being the most predominant DBPs detected in drinking water, and the median concentration in continental areas is 10.53. mu.g/L and 12.67. mu.g/L. Meanwhile, humic acid has higher generation potential of new disinfection byproducts such as Chloroketone (CKs), Chloral Hydrate (CH) and the like, and the concentration of the humic acid can reach ng/L level. The existing research shows that DBPs have carcinogenic and mutagenic hazards to human bodies, and emerging disinfection byproducts have higher cytotoxicity and genotoxicity.
The water treatment process has limited removal capacity to organic matters, the median of the removal rate of the conventional process is 32%, and the median of the removal rate of the deep treatment process of the biological activated carbon is 40%. The organic matter removal rate of the advanced treatment process mainly based on ozone oxidation is 59.4%, the removal rate of the organic pollutant index of the conventional-nanofiltration composite process can reach more than 90%, but the accumulation rate of Natural Organic Matters (NOM) on the surface of the membrane is high, and the membrane pollution is aggravated. Advanced oxidation technologies (AOPs) based on hydroxyl radicals (& 0H) are remarkably effective in removing NOM and controlling the generation of disinfection byproducts, the removal rate of NOM is 88%, and the trihalomethane formation potential (THMFP) and the haloacetic acid formation potential (HAAFP) are reduced by 70% and 31%, respectively. However, the removal of NOM by ozone-based advanced oxidation techniques has a problem of the formation of small molecular by-products such as aldehydes and carboxylic acids, and the removal of NOM by ultraviolet-based advanced oxidation techniques has a problem of high treatment cost and difficulty in catalyst recovery. Adsorption is an ideal method for removing organic matters in water.
Disclosure of Invention
Metal-Organic Frameworks (MOFs) with the advantages of large specific surface area, high porosity, adjustable pore structure, multiple functions of Organic ligands and the like become a novel adsorption material for treating water pollution. HKUST-1 is a marker compound in metal organic framework material, and is prepared from 1, 3, 5-benzenetricarboxylic acid and Cu2+The three-dimensional structure formed by cluster complexation has a proper pore channel window
Figure BDA0002801942440000021
The specific surface area exceeds 1000m2(ii) in terms of/g. The HKUST-1 is simple to prepare and has ideal adsorption application prospect.
The invention aims to provide a water treatment method for absorbing humic acid in water by using a metal organic framework HKUST-1, which can realize quick and efficient absorption of the humic acid.
In order to realize the technical effects, the invention adopts the following technical scheme: a water treatment method for absorbing humic acid in water by using a metal organic framework HKUST-1 comprises the following steps:
s1, preparing a metal organic framework HKUST-1 by adopting a solvothermal method;
s2, preparing an adsorption system containing humic acid;
s3, adding 0.6g/L of metal organic framework HKUST-1 in S1 into an adsorption system in S2, performing adsorption treatment on humic acid, keeping the pH of the formed solution at 3-11, keeping the adsorption reaction temperature at 298-333K, and adsorbing for a certain time to obtain a sample solution;
s4, taking out the sample solution, vacuum-filtering through a 0.45-micrometer filter membrane to remove trace dissolved metal organic framework HKUST-1, and determining the concentration of humic acid solution in adsorption equilibrium.
S5, carrying out desorption regeneration on the HKUST-1 by the sample solution to obtain the regenerated HKUST-1 adsorbent.
Preferably, the solvothermal method in S1 comprises the following steps:
step 1, dissolving copper nitrate trihydrate into pure water to obtain a solution A;
step 2, dissolving benzene tricarboxylic acid in ethanol to obtain a solution B;
step 3, mixing the solution A and the solution B to obtain a mixture, stirring the mixture at ambient temperature for 1 hour, pouring the mixture into a high-pressure autoclave lined with polytetrafluoroethylene, and heating the mixture in a drying oven at 120 ℃ for 24 hours;
and 4, taking out the heated mixture, cooling, performing vacuum filtration to obtain a blue crystal, washing, drying the blue crystal for 16 hours at 120 ℃ to obtain a metal organic framework HKUST-1, and storing in an oven at 60 ℃.
Preferably, the blue crystal is washed by a mixed solution of water and ethanol, and the volume ratio of the water to the ethanol is 1: 1.
Preferably, the preparation of the humic acid-containing adsorption system in S2 comprises the following steps:
step 1: preparing 1g/L humic acid standard stock solution;
step 2: diluting the humic acid standard stock solution in the step 1 into a humic acid use solution;
and step 3: the humic acid concentration of the humic acid use solution was measured using an ultraviolet spectrophotometer.
In the invention, the adsorption system is a water solution of humic acid to simulate the traditional organic matter pollution of the water environment.
Preferably, the concentration of the humic acid using solution is 1-20 mg/L.
Preferably, the pH value of the humic acid use solution is 5-7.
Preferably, the adsorption in S3 is carried out in a water bath constant temperature oscillator.
Preferably, the water bath constant temperature oscillator has a water bath oscillation intensity of 200 rpm.
Preferably, the desorption regeneration in S4 comprises the following steps:
step 1: adopting a NaOH washing method to the sample solution to obtain an adsorbent A;
step 2: soaking and washing the adsorbent A with ethanol, washing and filtering, sequentially performing 3 times, and drying in a vacuum drying oven at 120 ℃ to obtain an adsorbent B;
and step 3: and (3) calcining the adsorbent B after activation at 200 ℃ by using a muffle furnace to obtain a regenerated adsorbent C.
Preferably, the adsorption time in S3 is 0 to 240 min.
Compared with the humic acid adsorption technology in other industries, the invention has the beneficial effects that: the metal framework HKUST-1 humic acid adsorption system provided by the application can realize the rapid and efficient adsorption of humic acid in water through electrostatic interaction, hydrogen bonds and pi-pi interaction under the conditions that the pH is 3-11 and the temperature is 298-333K. The removal rate of 5mg/L humic acid by HKUST-1 can reach 100%, and the theoretical saturated adsorption capacity can reach 16.385 mg/g. The adsorption of the HKUST-1 to the humic acid conforms to a quasi-secondary power model, and is a spontaneous and disordered heat absorption process. HKUST-1 has good reproducibility and can be repeatedly used, and the recycling property of the adsorbent has important significance for practical application thereof.
Drawings
FIG. 1: the influence of the pH value of the solution on the absorption of humic acid by HKUST-1 is shown;
FIG. 2: the influence of the addition amount of the HKUST-1 on the adsorption of humic acid is shown;
FIG. 3: influence of common ions in water on adsorption of humic acid by HKUST-1;
FIG. 4: adsorption isotherm table 1 of adsorption of humic acid by HKUST-1;
FIG. 5: fitting a curve of quasi-second-order reaction kinetics of the adsorption of humic acid by HKUST-1;
FIG. 6: the removal rate of humic acid by HKUST-1 in the adsorption-desorption-regeneration test.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific examples in conjunction with the accompanying drawings.
A water treatment method for absorbing humic acid in water by using a metal organic framework HKUST-1 comprises the following steps:
s1, preparing a metal organic framework HKUST-1 by adopting a solvothermal method;
s2, preparing an adsorption system containing humic acid;
s3, adding 0.6g/L of metal organic framework HKUST-1 in S1 into an adsorption system in S2, performing adsorption treatment on humic acid, keeping the pH of the formed solution at 3-11, keeping the adsorption reaction temperature at 298-333K, and adsorbing for a certain time to obtain a sample solution;
s4, taking out the sample solution, vacuum-filtering through a 0.45-micrometer filter membrane to remove trace dissolved metal organic framework HKUST-1, and determining the concentration of humic acid solution in adsorption equilibrium.
S5, carrying out desorption regeneration on the HKUST-1 by the sample solution to obtain the regenerated HKUST-1 adsorbent.
The solvothermal method in the S1 comprises the following steps:
step 1, dissolving copper nitrate trihydrate into pure water to obtain a solution A;
step 2, dissolving benzene tricarboxylic acid in ethanol to obtain a solution B;
step 3, mixing the solution A and the solution B to obtain a mixture, stirring the mixture at ambient temperature for 1 hour, pouring the mixture into a high-pressure autoclave lined with polytetrafluoroethylene, and heating the mixture in a drying oven at 120 ℃ for 24 hours;
and 4, taking out the heated mixture, cooling, performing vacuum filtration to obtain a blue crystal, washing, drying the blue crystal for 16 hours at 120 ℃ to obtain a metal organic framework HKUST-1, and storing in an oven at 60 ℃.
And washing the blue crystal by adopting a mixed solution of water and ethanol, wherein the volume ratio of the water to the ethanol is 1: 1.
In the present invention, 0.88g of copper nitrate trihydrate Cu (NO)3)2·3H2O was dissolved in 12mL of pure water. 0.42g of 1, 3, 5-benzenetricarboxylic acid (H)3BTC) was dissolved in 12mL ethanol. Mixing the two solutions, stirring at ambient temperature for 1h, pouring the mixture into an autoclave lined with polytetrafluoroethylene, and placing at 120 deg.CHeating in an oven for 24h, cooling the mixture, vacuum filtering to obtain blue crystals, washing with a mixed solution of water and ethanol (volume 1: 1), drying at 120 deg.C for 16h, and storing in an oven at 60 deg.C.
The preparation of the humic acid-containing adsorption system in S2 comprises the following steps:
step 1: preparing 1g/L humic acid standard stock solution;
step 2: diluting the humic acid standard stock solution in the step 1 into a humic acid use solution;
and step 3: the humic acid concentration of the humic acid use solution was measured using an ultraviolet spectrophotometer.
In the invention, the adsorption system is a water solution of humic acid to simulate the traditional organic matter pollution of the water environment.
The concentration of the humic acid use solution is 1-20 mg/L.
The pH value of the humic acid use solution is 5-7.
The adsorption in S3 is put into a water bath constant temperature oscillator for reaction.
The water bath constant temperature oscillator has the water bath oscillation intensity of 200 rpm.
The desorption regeneration in the S4 comprises the following steps:
step 1: adopting a NaOH washing method to the sample solution to obtain an adsorbent A;
step 2: soaking, washing and filtering the adsorbent A with ethanol, sequentially performing 3 times, and drying in a vacuum drying oven at 120 ℃ to obtain an adsorbent B;
and step 3: and (3) calcining the adsorbent B after activation at 200 ℃ by using a muffle furnace to obtain a regenerated adsorbent C.
The adsorption time in the S3 is 0-240 min.
Embodiments of the present invention will be described in detail below with reference to examples. The following examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention. The reagents or instruments are not indicated by manufacturers, and are all conventional products which can be purchased through normal channels.
Example one
1) Preparation of HKUST-1
HKUST-1 is prepared by solvothermal method.
2) Preparation and determination of humic acid standard solution
Preparing 1g/L humic acid standard stock solution, diluting into 1-20 mg/L humic acid using solution, and measuring the concentration of the humic acid by using an ultraviolet spectrophotometer.
3) The specific adsorption process is carried out according to the following steps
The adding amount of HKUST-1 is 0.6g/L, the mixture is placed in a water bath constant temperature oscillator for oscillation at 298K, 313K and 333K and with the oscillation intensity of 200r/min, the adsorption is carried out for 120min, and the concentration Ce of humic acid solution at the time of adsorption equilibrium is measured after the membrane is passed.
The Langmuir isothermal adsorption model can more accurately describe the process of adsorbing humic acid by HKUST-1. The adsorption capacity of the humic acid of HKUST-1 at 298K is 14.423mg/g, and can reach 16.385mg/g at 333K, and the adsorption constant of HKUST-1 on the humic acid is increased from 0.81L/mg to 1.171L/mg.
Example two
1) Preparation of HKUST-1
HKUST-1 is prepared by solvothermal method.
2) Preparation and determination of humic acid standard solution
Preparing 1g/L humic acid standard stock solution, diluting into 8mg/L humic acid using solution, and measuring the concentration of the humic acid by using an ultraviolet spectrophotometer.
3) The specific adsorption process is carried out according to the following steps
The adding amount of HKUST-1 is 0.6g/L, the initial concentration of HA is fixed at 8mg/L, the pH value of the solution is adjusted to 5, samples are taken after adsorbing for 2, 5, 20, 30, 40, 90, 120, 240 and 400min under the condition that the oscillation intensity is 200r/min, and the concentration of humic acid solution is measured after membrane passing.
10min before the reaction starts, the adsorption rate of HKUST-1 on humic acid is high, the humic acid is linearly adsorbed, the adsorption amounts can respectively reach 5.856mg/g (298K), 6.741mg/g (313K) and 6.980mg/g (333K), and the maximum adsorption capacities at the respective temperatures are respectively 44.9%, 51.4% and 52.5%. The process of adsorbing humic acid by HKUST-1 is more in line with a quasi-second order kinetic model, the theoretical adsorption capacity of the humic acid can reach 13.289mg/g at most, and the rate constant is 0.0062 g/(mg-min) at most.
Example three
1) Preparation of HKUST-1
HKUST-1 is prepared by solvothermal method.
2) Preparation and determination of humic acid standard solution
Preparing 1g/L humic acid standard stock solution, diluting into 5mg/L humic acid using solution, and measuring the concentration of the humic acid by using an ultraviolet spectrophotometer.
3) The specific adsorption process is carried out according to the following steps
And (2) washing the adsorbent by adopting a NaOH washing method, soaking, washing and filtering the washed adsorbent for 3 times by using a proper amount of ethanol, drying the adsorbent in a vacuum drying box at 120 ℃ overnight, calcining the activated HKUST-1 for a plurality of hours at 200 ℃ by using a muffle furnace to obtain the regenerated adsorbent, and performing the next cycle of adsorption-desorption regeneration test.
After the regeneration of the first desorption, the removal rate of the humic acid by the HKUST-1 can reach 82.78 percent and is only reduced by 1.82 percent. After three times of desorption and regeneration, the removal rate of humic acid by HKUST-1 can still reach 56.53%. A large number of reversible adsorption sites exist on the surface of the HKUST-1, and the HKUST-1 has good desorption regeneration capacity and can be recycled.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.

Claims (10)

1. A water treatment method for absorbing humic acid in water by using a metal organic framework HKUST-1 is characterized by comprising the following steps:
s1, preparing a metal organic framework HKUST-1 by adopting a solvothermal method;
s2, preparing an adsorption system containing humic acid;
s3, adding 0.6g/L of metal organic framework HKUST-1 in S1 into an adsorption system in S2, performing adsorption treatment on humic acid, keeping the pH of the formed solution at 3-11, keeping the adsorption reaction temperature at 298-333K, and adsorbing for a certain time to obtain a sample solution;
s4, taking out the sample solution, vacuum-filtering through a 0.45-micrometer filter membrane to remove trace dissolved metal organic framework HKUST-1, and determining the concentration of humic acid solution in adsorption equilibrium.
S5, carrying out desorption regeneration on the HKUST-1 by the sample solution to obtain the regenerated HKUST-1 adsorbent.
2. The water treatment method for absorbing humic acid in water by using metal organic framework HKUST-1 as claimed in claim 1, wherein the solvent thermal method in S1 comprises the following steps:
step 1, dissolving copper nitrate trihydrate into pure water to obtain a solution A;
step 2, dissolving benzene tricarboxylic acid in ethanol to obtain a solution B;
step 3, mixing the solution A and the solution B to obtain a mixture, stirring the mixture at ambient temperature for 1 hour, pouring the mixture into a high-pressure autoclave lined with polytetrafluoroethylene, and heating the mixture in a drying oven at 120 ℃ for 24 hours;
and 4, taking out the heated mixture, cooling, performing vacuum filtration to obtain a blue crystal, washing, drying the blue crystal for 16 hours at 120 ℃ to obtain a metal organic framework HKUST-1, and storing in an oven at 60 ℃.
3. The water treatment method for absorbing humic acid in water by using the metal organic framework HKUST-1 as claimed in claim 2, wherein the blue crystal is washed by using a mixed solution of water and ethanol, and the volume ratio of the water to the ethanol is 1: 1.
4. The water treatment method for absorbing humic acid in water by using metal organic framework HKUST-1 as claimed in claim 1, wherein the preparation of the humic acid-containing adsorption system in S2 comprises the following steps:
step 1: preparing 1g/L humic acid standard stock solution;
step 2: diluting the humic acid standard stock solution in the step 1 into a humic acid use solution;
and step 3: the humic acid concentration of the humic acid use solution was measured using an ultraviolet spectrophotometer.
5. The water treatment method for absorbing humic acid in water by using the metal organic framework HKUST-1 as claimed in claim 4, wherein the concentration of the humic acid use solution is 1-20 mg/L.
6. The water treatment method for absorbing humic acid in water by using the metal organic framework HKUST-1 as claimed in claim 4, wherein the pH of the humic acid use solution is 5-7.
7. The water treatment method for absorbing humic acid in water by using the metal organic framework HKUST-1 as claimed in claim 1, wherein the absorption in S3 is carried out in a water bath constant temperature oscillator for reaction.
8. The water treatment method for absorbing humic acid in water by using the metal organic framework HKUST-1 as claimed in claim 7, wherein the water bath constant temperature oscillator has a water bath oscillation intensity of 200 rpm.
9. The water treatment method for absorbing humic acid in water by using metal organic framework HKUST-1 as claimed in claim 1, wherein the desorption regeneration in S4 comprises the following steps:
step 1: adopting a NaOH washing method to the sample solution to obtain an adsorbent A;
step 2: soaking and washing the adsorbent A with ethanol, washing and filtering, sequentially performing 3 times, and drying in a vacuum drying oven at 120 ℃ to obtain an adsorbent B;
and step 3: and (3) calcining the adsorbent B after activation at 200 ℃ by using a muffle furnace to obtain a regenerated adsorbent C.
10. The water treatment method for absorbing humic acid in water by using the metal organic framework HKUST-1 as claimed in claim 1, wherein the absorption time in S3 is 0-240 min.
CN202011366798.3A 2020-11-27 2020-11-27 Water treatment method for absorbing humic acid in water by using metal organic framework HKUST-1 Pending CN112759026A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115501862A (en) * 2022-09-20 2022-12-23 河南大学 Preparation method of wheat bran/HKUST-1 aerogel in aqueous solution

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN101062798A (en) * 2006-12-11 2007-10-31 南京大学 Method for removing humic acid macromolecule contaminant from water body

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
CN101062798A (en) * 2006-12-11 2007-10-31 南京大学 Method for removing humic acid macromolecule contaminant from water body

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Title
湘潭大学化工系环境工程教研室: "《工业废水处理工程 上》", 31 October 1983, 湘潭大学出版社 *
陆思嘉等: "金属有机骨架HKUST-1 对水中微量氨基酸的吸附性能", 《中国环境科学》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115501862A (en) * 2022-09-20 2022-12-23 河南大学 Preparation method of wheat bran/HKUST-1 aerogel in aqueous solution
CN115501862B (en) * 2022-09-20 2023-11-21 河南大学 Preparation method of wheat bran/HKUST-1 aerogel in aqueous solution

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