CN114772702B - Method for removing iohexol in water by catalyzing ozone through oxidation-reduction medium reinforced ferric oxide - Google Patents
Method for removing iohexol in water by catalyzing ozone through oxidation-reduction medium reinforced ferric oxide Download PDFInfo
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- CN114772702B CN114772702B CN202210313251.XA CN202210313251A CN114772702B CN 114772702 B CN114772702 B CN 114772702B CN 202210313251 A CN202210313251 A CN 202210313251A CN 114772702 B CN114772702 B CN 114772702B
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- iohexol
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229960001025 iohexol Drugs 0.000 title claims abstract description 48
- NTHXOOBQLCIOLC-UHFFFAOYSA-N iohexol Chemical compound OCC(O)CN(C(=O)C)C1=C(I)C(C(=O)NCC(O)CO)=C(I)C(C(=O)NCC(O)CO)=C1I NTHXOOBQLCIOLC-UHFFFAOYSA-N 0.000 title claims abstract description 48
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 20
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 230000033116 oxidation-reduction process Effects 0.000 title description 5
- ASOKPJOREAFHNY-UHFFFAOYSA-N 1-Hydroxybenzotriazole Chemical compound C1=CC=C2N(O)N=NC2=C1 ASOKPJOREAFHNY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000243 solution Substances 0.000 claims description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000005273 aeration Methods 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 5
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 5
- 239000012498 ultrapure water Substances 0.000 claims description 5
- 239000008055 phosphate buffer solution Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 10
- 230000035484 reaction time Effects 0.000 abstract description 5
- 238000005728 strengthening Methods 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 description 22
- 230000015556 catabolic process Effects 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002872 contrast media Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000009303 advanced oxidation process reaction Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229960004647 iopamidol Drugs 0.000 description 2
- XQZXYNRDCRIARQ-LURJTMIESA-N iopamidol Chemical compound C[C@H](O)C(=O)NC1=C(I)C(C(=O)NC(CO)CO)=C(I)C(C(=O)NC(CO)CO)=C1I XQZXYNRDCRIARQ-LURJTMIESA-N 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HOSGXJWQVBHGLT-UHFFFAOYSA-N 6-hydroxy-3,4-dihydro-1h-quinolin-2-one Chemical group N1C(=O)CCC2=CC(O)=CC=C21 HOSGXJWQVBHGLT-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 101710065039 Aladin Proteins 0.000 description 1
- 102100028292 Aladin Human genes 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 230000003915 cell function Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 231100000025 genetic toxicology Toxicity 0.000 description 1
- 230000001738 genotoxic effect Effects 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- NPZTUJOABDZTLV-UHFFFAOYSA-N hydroxybenzotriazole Substances O=C1C=CC=C2NNN=C12 NPZTUJOABDZTLV-UHFFFAOYSA-N 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002697 interventional radiology Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229960002603 iopromide Drugs 0.000 description 1
- DGAIEPBNLOQYER-UHFFFAOYSA-N iopromide Chemical compound COCC(=O)NC1=C(I)C(C(=O)NCC(O)CO)=C(I)C(C(=O)N(C)CC(O)CO)=C1I DGAIEPBNLOQYER-UHFFFAOYSA-N 0.000 description 1
- 230000003907 kidney function Effects 0.000 description 1
- 210000004962 mammalian cell Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 231100000219 mutagenic Toxicity 0.000 description 1
- 230000003505 mutagenic effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 231100000590 oncogenic Toxicity 0.000 description 1
- 230000002246 oncogenic effect Effects 0.000 description 1
- 238000005949 ozonolysis reaction Methods 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- ZEYOIOAKZLALAP-UHFFFAOYSA-M sodium amidotrizoate Chemical compound [Na+].CC(=O)NC1=C(I)C(NC(C)=O)=C(I)C(C([O-])=O)=C1I ZEYOIOAKZLALAP-UHFFFAOYSA-M 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The application discloses a method for removing iohexol in water by catalyzing ozone with ferric oxide reinforced by a redox medium. Compared with the prior art, the method adopts the 1-hydroxybenzotriazole to strengthen ferric oxide to catalyze the ozone reaction, can rapidly reduce the content of iohexol in water, has high ozone utilization rate and good strengthening reaction effect, effectively shortens the reaction time, and has engineering application value.
Description
Technical Field
The application belongs to the technical field of water treatment, and particularly relates to a method for removing iohexol in water by catalyzing ozone through oxidation-reduction medium reinforced ferric oxide.
Background
Pharmaceutical and Personal Care Products (PPCPs) are widely detected in aqueous environments, and iodinated contrast agents (ICMs) are an important component thereof. ICMs are commonly used drugs for imaging blood vessels and body cavities in interventional radiology, are structurally stable, and cannot be effectively removed by conventional water treatment processes. The annual worldwide consumption of ICMs is about 3.5X106 kg, with 95% of ICMs being discharged into the body of water without metabolism. Iohexol is a non-ionic contrast agent compared to other iodinated contrast agents, and produces fewer adverse effects than ionic contrast agents during actual use. Iohexol and iopamidol are the most common iodinated contrast agents in surface water. The iohexol has 6 hydroxyl groups on the molecular chain, so the iohexol has strong water solubility and polarity. Although ICMs do not show negative environmental impact, iohexol has been studied to show negative effects on renal function in humans. In addition, iodinated contrast agents are believed to be the primary source of iodine for the iodinated disinfection byproducts (I-DBPs), which have "oncogenic, teratogenic, mutagenic" properties, can disrupt cellular function, interfere with and harm mammalian cell gene expression, exhibit genotoxicity, and are generally more toxic than the chlorinated and brominated disinfection byproducts. Therefore, development of efficient removal control techniques for such emerging contaminants in aqueous environments is highly desirable.
Advanced Oxidation (AOP) refers to a technique that efficiently degrades persistent substances in solution by generating large amounts of strong oxidants (e.g., OH). A variety of AOPs can be used in water treatment such as UV, ozone, H2O2, persulfates, and the like, as well as combinations thereof. For example, ultraviolet irradiation and ultraviolet/chlorination may achieve effective removal of various ICMs, including sodium diatrizoate, iopamidol, iohexol, iopromide, and the like. Ozone, in turn, is commonly used for sterilization, disinfection, deodorization and decolorization, and has a high oxidation-reduction potential in water. Ozone is therefore widely used in water and wastewater treatment processes and is considered a green oxidizing agent. The organic pollutants can be degraded through direct reaction of ozone and molecular ozone, and can also be degraded through indirect reaction of free radicals generated by ozonolysis. However, the active hydroxyl radicals generated by the direct ozone reaction are limited, i.e. the ozone utilization rate is low under the same conditions, the active radical yield is low, and the degradation rate to pollutants is also low. Therefore, research and development of a treatment technology capable of promoting efficient decomposition of ozone into active radicals have been demanded.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The present application has been made in view of the above and/or problems occurring in the prior art.
Therefore, the application aims to overcome the defects in the prior art and provide a method for removing iohexol in water by catalyzing ozone with ferric oxide reinforced by a redox medium.
In order to solve the technical problems, the application provides the following technical scheme:
preparing an iohexol solution with required concentration by adopting ultrapure water;
adding a certain amount of redox medium into the iohexol solution, adding a buffer solution, adjusting the pH value of the solution to 7, and uniformly stirring to obtain a mixed solution;
placing the obtained mixed solution into an ozone reactor, then adding ferric oxide with a certain concentration, switching on an ozone generator, adjusting the aeration concentration of ozone and maintaining the flow.
As a preferred embodiment of the present application, wherein: the concentration of the iohexol solution was 10 μm.
As a preferred embodiment of the present application, wherein: the redox mediator is 1-hydroxybenzotriazole.
As a preferred embodiment of the present application, wherein: the concentration of 1-hydroxybenzotriazole was 5. Mu.M.
As a preferred embodiment of the present application, wherein: the buffer was 10 mM phosphate buffer.
As a preferred embodiment of the present application, wherein: the pH adjustment is prepared from 1M sodium hydroxide solution and 0.18M dilute sulfuric acid solution.
As a preferred embodiment of the present application, wherein: the concentration of the ferric oxide is 200 mg/L.
As a preferred embodiment of the present application, wherein: the ozone reactor is a double-layer glass tube, wherein the bottom of the glass tube is provided with a sand core plate aeration port.
As a preferred embodiment of the present application, wherein: the aeration concentration of the ozone is 0.40mg/L, and the aeration flow is 0.5L/min.
The application has the beneficial effects that:
(1) The application is a strengthening technology based on heterogeneous ferric oxide catalytic ozone advanced oxidation technology and 1-hydroxybenzotriazole, can efficiently remove iohexol in water, and compared with the single ozone oxidation and ferric oxide catalytic ozone oxidation technology, the strengthening reaction technology effectively promotes the degradation of iohexol in solution.
(2) The application adopts the reinforced ozone catalysis technology, promotes the generation of hydroxyl free radicals in the ozone oxidation process, and improves the reaction rate constant in the reaction process.
The application has high reactivity under the neutral pH condition, can be carried out at normal temperature, has easy satisfaction of the strengthening reaction condition, and is simple and convenient and quick to operate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 shows the effect of ozone reaction on iohexol degradation in example 1 of the present application and comparative example 1 and comparative example 2.
FIG. 2 is a graph showing the effect of ozone reaction on iohexol degradation and pseudo first order kinetics of comparative example 3.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The materials used in the application:
iohexol (Iohexol) (C19H 26I3N3O9, > 99%), aladine (aladin) biochemical technologies, inc (Shanghai), commonly available commercially; ferric oxide (Fe 2O3, 99%), 1-hydroxybenzotriazole (HBT, C6H5N3O, 99%), shanghai Yi En chemical technologies limited, common commercial;
glass double tube (custom made devices).
In the application, the concentration of the iohexol is detected by adopting a high performance liquid chromatography.
Example 1
Preparing an iohexol solution with the concentration of 10 mu M by adopting ultrapure water; adding 5 mu M1-hydroxybenzotriazole solution into iohexol solution, adding 10 mM phosphate buffer solution, regulating the pH of the solution to 7 by using 1M sodium hydroxide solution and 0.18M dilute sulfuric acid solution, and uniformly stirring to obtain mixed solution;
500ml of the mixed solution is placed in a double-layer glass tube reactor, 200 mg/L ferric oxide is added, an ozone generator is connected, the ozone aeration concentration is regulated to 0.40mg/L, and the aeration flow is maintained to be 0.5L/min. The reaction time is controlled to be 0, 2, 5, 10, 15, 30 and 60 minutes, and the degradation rate of ozone to iohexol is measured and calculated.
Comparative example 1
Preparing an iohexol solution with the concentration of 10 mu M by adopting ultrapure water; adding 10 mM phosphate buffer solution, adjusting the pH of the solution to 7 by using 1M sodium hydroxide solution and 0.18M dilute sulfuric acid solution, and uniformly stirring to obtain a mixed solution;
500ml of the mixed solution is placed in a double-layer glass tube reactor, 200 mg/L ferric oxide is added, an ozone generator is connected, the ozone aeration concentration is regulated to 0.40mg/L, and the aeration flow is maintained to be 0.5L/min. The reaction time is controlled to be 0, 2, 5, 10, 15, 30 and 60 minutes, and the degradation rate of ozone to iohexol is measured and calculated.
Comparative example 2
Preparing an iohexol solution with the concentration of 10 mu M by adopting ultrapure water; adding 10 mM phosphate buffer solution, adjusting the pH of the solution to 7 by using 1M sodium hydroxide solution and 0.18M dilute sulfuric acid solution, and uniformly stirring to obtain a mixed solution;
500ml of the mixed solution is placed in a double-layer glass tube reactor, an ozone generator is connected, the ozone aeration concentration is regulated to be 0.40mg/L, and the aeration flow is maintained to be 0.5L/min. The reaction time is controlled to be 0, 2, 5, 10, 15, 30 and 60 minutes, and the degradation rate of ozone to iohexol is measured and calculated.
Comparative example 3
In this example, compared with example 1, the concentrations of 1-hydroxybenzotriazole solutions were adjusted to 0, 1, 5, 10 and 20. Mu.M, respectively, and the other preparation process conditions were the same as in example 1, and the degradation rate of iohexol by ozone under these several conditions was measured and calculated.
FIG. 1 shows the effect of ozone reaction on iohexol degradation in example 1 and comparative examples 1 and 2. It can be seen that ozone, ferric oxide catalyzed ozone and 1-hydroxybenzotriazole reinforced ferric oxide catalyzed ozone oxidation have good effects on the degradation of iohexol, and the degradation rates of the iohexol in 60min reach 64%, 85% and 100% respectively. It has thus been found that the enhanced ozone catalytic technique is more effective in removing iohexol from solution.
FIG. 2 shows the effect of ozone reaction on iohexol degradation after addition of 1-hydroxybenzotriazole solutions at various concentrations in comparative example 3. It can be seen that the 1-hydroxybenzotriazole enhanced ozone catalysis technology has an acceleration effect on the degradation of iohexol when the dosage of the 1-hydroxybenzotriazole is 1 mu M, compared with an ozone reaction system without adding a redox medium, the degradation rate is increased from 84% to 91%, and the degradation reaction rate constant of the iohexol is improved by 25%; when the 1-hydroxybenzotriazole reinforced ozone catalysis technology is used for adding 20 mu M of 1-hydroxybenzotriazole, compared with an ozone reaction system without adding oxidation-reduction medium, the technology has the advantages that the degradation rate of iohexol is increased from 84% to 90%, but the degradation reaction rate constant of iohexol is only increased by 17%; as can be seen from fig. 2, when the 1-hydroxybenzotriazole is added at a concentration of 20 μm, the degradation rate of iohexol before the reaction is 20 min lower than that of the ferric oxide catalytic ozone system, which indicates that the addition of 1-hydroxybenzotriazole can increase the degradation rate of iohexol and the reaction rate of the reaction system, but when the concentration is too high, the degradation of iohexol is affected; when the 1-hydroxybenzotriazole is added at a concentration of 5 mu M, the degradation rate reaches 100% at a reaction time of 60min, and the iohexol in the reaction solution can be completely oxidized, i.e. the degradation effect is best at the concentration.
It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.
Claims (3)
1. A method for removing iohexol in water by catalyzing ozone with ferric oxide reinforced by redox medium is characterized in that: comprising the steps of (a) a step of,
preparing an iohexol solution with the concentration of 10 mu M by adopting ultrapure water;
adding 5 mu M of redox medium into 10 mu M iohexol solution, adding 10 mM phosphate buffer solution, adjusting the pH value of the solution to 7, and stirring uniformly to obtain mixed solution;
wherein the redox mediator is 1-hydroxybenzotriazole;
the obtained mixed solution was placed in an ozone reactor, then 200 mg/L ferric oxide was added, an ozone generator was turned on, the ozone aeration concentration was adjusted to 0.4mg/L, and the aeration flow rate was maintained at 0.5L/min.
2. The method for removing iohexol from water by catalyzing ozone with ferric oxide enhanced by a redox mediator as claimed in claim 1, wherein the method comprises the steps of: the pH of the adjustment solution was adjusted by 1M sodium hydroxide solution and 0.18M dilute sulfuric acid solution.
3. The method for removing iohexol from water by catalyzing ozone with ferric oxide enhanced by a redox mediator as claimed in claim 1, wherein the method comprises the steps of: the ozone reactor is a double-layer glass tube, wherein the bottom of the glass tube is provided with a sand core plate aeration port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210313251.XA CN114772702B (en) | 2022-03-28 | 2022-03-28 | Method for removing iohexol in water by catalyzing ozone through oxidation-reduction medium reinforced ferric oxide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210313251.XA CN114772702B (en) | 2022-03-28 | 2022-03-28 | Method for removing iohexol in water by catalyzing ozone through oxidation-reduction medium reinforced ferric oxide |
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| CN114772702A CN114772702A (en) | 2022-07-22 |
| CN114772702B true CN114772702B (en) | 2023-10-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999001607A2 (en) * | 1997-06-20 | 1999-01-14 | Call, Krimhild | Enzymatic oxidation system with novel enzymatic-effect enhancing compounds |
| CN103977800A (en) * | 2014-05-16 | 2014-08-13 | 黑龙江省科学院自然与生态研究所 | Synthesis method of nano magnetic hydroxyl iron oxide ozone catalyst with core-shell structure |
| CN109607857A (en) * | 2018-12-19 | 2019-04-12 | 上海电力学院 | A method of effectively removing iodo x-ray contrast agent in water |
| CN109607743A (en) * | 2018-12-21 | 2019-04-12 | 北京林业大学 | A kind of O3 catalytic oxidation water process decontamination dyeing technique based on strengthening electronic transfer efficiency |
-
2022
- 2022-03-28 CN CN202210313251.XA patent/CN114772702B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999001607A2 (en) * | 1997-06-20 | 1999-01-14 | Call, Krimhild | Enzymatic oxidation system with novel enzymatic-effect enhancing compounds |
| CN103977800A (en) * | 2014-05-16 | 2014-08-13 | 黑龙江省科学院自然与生态研究所 | Synthesis method of nano magnetic hydroxyl iron oxide ozone catalyst with core-shell structure |
| CN109607857A (en) * | 2018-12-19 | 2019-04-12 | 上海电力学院 | A method of effectively removing iodo x-ray contrast agent in water |
| CN109607743A (en) * | 2018-12-21 | 2019-04-12 | 北京林业大学 | A kind of O3 catalytic oxidation water process decontamination dyeing technique based on strengthening electronic transfer efficiency |
Non-Patent Citations (1)
| Title |
|---|
| 催化臭氧氧化处理难降解石化废水技术的研究进展;白小霞;杨庆;丁昀;魏巍;丁洁;钟莺莺;;化工进展(第01期);263-268 * |
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