CN111482186B - Bi for treating oil field waste liquid organic matter3O4Preparation method of Br photocatalyst - Google Patents
Bi for treating oil field waste liquid organic matter3O4Preparation method of Br photocatalyst Download PDFInfo
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 title claims abstract description 22
- 239000002699 waste material Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title description 8
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 18
- 239000008103 glucose Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002243 precursor Substances 0.000 claims abstract description 14
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 239000005416 organic matter Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 10
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000012153 distilled water Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims abstract description 7
- 238000001354 calcination Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 150000001622 bismuth compounds Chemical class 0.000 claims abstract description 3
- -1 bromine compound Chemical class 0.000 claims abstract description 3
- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims abstract description 3
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 6
- FBXVOTBTGXARNA-UHFFFAOYSA-N bismuth;trinitrate;pentahydrate Chemical compound O.O.O.O.O.[Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FBXVOTBTGXARNA-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 abstract description 26
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 abstract description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052796 boron Inorganic materials 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000001699 photocatalysis Effects 0.000 description 10
- 239000013078 crystal Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000005303 weighing Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 229910000416 bismuth oxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
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- 239000003208 petroleum Substances 0.000 description 2
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- 239000004065 semiconductor Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
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- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
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- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
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- 229920013818 hydroxypropyl guar gum Polymers 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 239000003607 modifier Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
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- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
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- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
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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
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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
- C02F2101/38—Organic compounds containing nitrogen
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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Abstract
The invention discloses Bi for treating oil field waste liquid organic matter3O4The preparation method of the Br photocatalyst comprises the following steps: s1, dissolving a bismuth-containing compound in distilled water, and dissolving a bromine-containing compound and glucose in another part of distilled water, wherein the molar ratio of bismuth to bromine to glucose is 2:2: 1; s2, dropwise adding the water solution containing the bromine compound and glucose into the water solution containing the bismuth compound, and stirring for 20-40 min; s3, transferring the reaction liquid into a reaction kettle, reacting at the constant temperature of 140-150 ℃ for 15-16h, filtering out a product, and drying at 70 ℃ to obtain a precursor; s4 molar amount of precursor and Bi2O3Mixing and grinding the mixture to powder, calcining the powder for 6 hours at the constant temperature of 400-500 ℃ in a muffle furnace to obtain modified Bi3O4Br photocatalyst. The catalyst is compared with the prior Bi3O4The Br photocatalyst has better performance, the preparation method reduces the production cost, simplifies the production process, and the modified Bi3O4The Br photocatalyst can catalyze and oxidize organic boron and acrylamide in oilfield fracturing flowback fluid under visible light.
Description
Technical Field
The invention relates to the technical field of oil and gas field waste liquid treatment, in particular to Bi for photocatalytic treatment and oxidation treatment of organic matters in oil field waste liquid3O4A preparation method of Br photocatalyst.
Background
With the continuous development of energy and the continuous enhancement of environmental awareness of people, the relationship between energy and environment is more and more concerned by people. The petroleum in the three major energy sources is industrial blood, and the exploitation of the petroleum can improve the economic level of China at a high speed, but causes a series of environmental problems in the process of oil exploitation. Such as fracturing flowback fluid generated after an acidizing and fracturing technology adopted in an oil field, the fracturing flowback fluid has complex components, such as organic boron, acrylamide, hydroxypropyl guar gum and other substances, and has the characteristics of high viscosity, high turbidity, high stability and the like. If the fracturing flow-back fluid is not directly discharged, serious environmental pollution can be caused, which is contrary to the green environmental protection idea advocated by people, so that the adoption of a green and efficient treatment method for the fracturing flow-back fluid in the oil field is a core technology for solving the problems.
The photocatalysis technology is a novel technology for utilizing light energy to purify environment and convert energy under the action of a semiconductor catalyst, has the advantages of no selectivity, strong oxidation capacity, high reaction speed, high treatment efficiency, no secondary pollution and the like, and can be widely applied to the fields of biomedicine, environmental management, energy production and the like. In recent years, the photocatalytic technology has attracted more and more attention, some photocatalysts are reported, and some modification methods are adopted in order to further improve the catalytic efficiency and expand the application range of the photocatalysts. The photocatalytic degradation process of the semiconductor photocatalyst to pollutants is carried out on the surface of the catalyst, and in the photocatalytic reaction process, the atomic arrangement and the inherent coordination of the surface of the catalyst determine the adsorption of the catalyst to reactant molecules, the surface migration of photogenerated carriers and reactant molecules, the desorption of product molecules and other properties, so that the reaction activity of the catalyst has an inseparable relationship with the surface property of the catalyst. Because the arrangement sequence of atoms in the space is different, the performance of different crystal faces of the catalyst crystal material is different, and different photocatalytic activities are shown. The photocatalytic activity of the catalyst can therefore be increased by crystal modification.
Disclosure of Invention
It is an object of the present invention to provide modified Bi3O4The catalyst product prepared by the preparation method of the Br photocatalyst has more excellent photocatalytic activity and can be used for treating organic matters in oil field waste liquid by photocatalytic oxidation.
The invention provides Bi for treating oil field waste liquid organic matter3O4The preparation method of the Br photocatalyst comprises the following steps:
s1, dissolving the bismuth-containing compound in distilled water, and dissolving the bromine-containing compound and glucose in the other part of distilled water, wherein the molar ratio of bismuth, bromine and glucose is 2:2: 1. The bismuth-containing compound is preferably bismuth nitrate pentahydrate, and the bromine-containing compound is preferably potassium bromide.
S2, dropwise adding the water solution containing the bromine compound and the glucose into the water solution containing the bismuth compound under the stirring condition, and stirring for 20-40 min.
S3, transferring the reaction liquid into a reaction kettle, heating to 140-150 ℃, reacting at constant temperature for 15-16h, filtering out the product, and drying at 70 ℃ to obtain the precursor.
S4 molar amount of precursor and Bi2O3Mixing and grinding the mixture to powder, calcining the powder for 6 hours at the constant temperature of 400-500 ℃ in a muffle furnace to obtain modified Bi3O4Br photocatalyst.
Preferably, in step S2, the temperature is raised to 45 ℃ and the mixture is stirred for 20-30min at a constant temperature.
Preferably, in step S3, the temperature is raised to 145 ℃ in a reaction kettle, the reaction is performed for 16 hours at a constant temperature, and after natural cooling, the product is filtered out and dried at 70 ℃ to obtain a precursor.
Preferably, in step S4, the precursor and Bi2O3Mixing and grinding the mixture to powder with the particle size of 50-100 mu m, calcining the powder in a muffle furnace at the constant temperature of 400 ℃ for 5 hours, and calcining at the constant temperature of 500 ℃ for 1 hour to obtain modified Bi3O4Br photocatalyst.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention provides a modified Bi3O4The preparation method of the Br photocatalyst has simple process and low cost, adopts nontoxic and harmless raw material components, reduces the harm to the health of human bodies and the ecological environment, achieves the green and environment-friendly technology, and is easy to control and produce in a large scale; modified Bi obtained3O4The Br photocatalyst has strong stability and high activity.
(2) The preparation method of the invention adds modifier glucose which is used as a structure-directing agent to change Bi3O4The crystal structure of the Br photocatalyst promotes the photocatalytic activity of the catalyst.
(3) The modified Bi3O4The Br photocatalyst can be used for catalytically decomposing organic boron and acrylamide in oil field waste liquid under visible light. The modified Bi3O4Br photocatalyst vs. Bi3O4The Br catalyst has stronger light absorption performance, greatly improves the utilization rate of visible light, has obvious effect and huge application space particularly in the aspect of treating organic boron and acrylamide in shale gas flow-back fluid, and has the removal rate of more than 88 percent.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 shows modified Bi prepared in example 13O4XRD spectrum of Br photocatalyst.
FIG. 2 shows modified Bi prepared in example 13O4Fluorescence spectrum of Br photocatalyst.
FIG. 3 shows modified Bi prepared in example 13O4The degradation efficiency chart of Br photocatalyst for degrading oil field organic matter.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
Weighing 0.9701g of bismuth nitrate pentahydrate by using an analytical balance, respectively dissolving the weighed materials in 30mL of distilled water, stirring and dissolving, weighing 0.238g of potassium bromide and 0.1800g of glucose, dissolving the potassium bromide and the glucose in the 30mL of distilled water, stirring and dissolving, adding an aqueous solution containing the potassium bromide and the glucose into an aqueous solution of the bismuth nitrate pentahydrate by using a rubber head dropper, magnetically stirring for 40min, transferring the mixed solution into a reaction kettle, reacting for 16h in an oven at the constant temperature of 150 ℃, filtering, cleaning and collecting precipitates; the precipitate was dried in an oven at 70 ℃ for 12h to give a precursor. 0.6098g of precursor and 0.9319g of bismuth oxide are weighed and ground in a mortar, and then the mixture is placed in a muffle furnace to be calcined for 6 hours at 500 ℃, so that solid powder, namely modified Bi is obtained3O4Br photocatalyst.
FIG. 1 shows modified Bi prepared in example 13O4Br photocatalyst and conventional unmodified Bi3O4XRD spectrum contrast diagram of Br catalyst. It can be seen that the catalyst Bi3O4Br and modified Bi3O4The diffraction peaks of the crystal face of the Br photocatalyst appear at the same angle with the position of the diffraction peak of the standard card. Modifying Bi in the spectrum3O4The intensity of the diffraction peak of the Br photocatalyst is higher than that of the unmodified Bi3O4Br photocatalyst. When the diffraction peak 2 theta value is 9.5 DEG, it corresponds to Bi3O4002 face of Br catalyst, modified Bi3O4The diffraction peak intensity of the 002 crystal face of the Br photocatalyst is obviously higher than that of unmodified Bi3O4Br photocatalyst, indicating that the addition of glucose successfully exposed the 002 crystal plane.
FIG. 2 shows modified Bi prepared in example 13O4Br photocatalyst and conventional unmodified Bi3O4Fluorescent spectrum of Br catalyst. It is apparent from the figure that modified Bi is observed3O4The fluorescence peak intensity of the Br photocatalyst is lower than that of the unmodified Bi3O4Br photocatalyst. The high and low intensity of the fluorescence peak can represent the activity intensity of the catalyst, and the stronger the fluorescence peak is, the photo-generated carrier recombination opportunity is representedThe larger the separation efficiency, the lower the catalytic activity.
Modified Bi prepared in example 13O4The specific surface area of the Br catalyst was 187m2(ii) in terms of/g. Conventional unmodified Bi3O4The specific surface area of the Br catalyst is 146m2(ii) in terms of/g. Specific test method of specific surface: weighing 50mg of the catalyst to be detected, placing the catalyst in a test sample tube of a full-automatic specific surface area tester, adopting high-purity nitrogen as adsorption gas, adsorbing at the temperature of liquid nitrogen of-196 ℃, desorbing at the temperature of 200 ℃ to obtain an adsorption and desorption isotherm of the catalyst, and analyzing the specific surface area of the catalyst by analyzing the adsorption/desorption isotherm.
Example 2
Weighing 0.9701g of bismuth nitrate pentahydrate by using an analytical balance, respectively dissolving the weighed materials in 30mL of distilled water, stirring and dissolving, weighing 0.238g of potassium bromide and 0.1800g of glucose, dissolving the potassium bromide and the glucose in 30mL of distilled water, stirring and dissolving, adding an aqueous solution containing the potassium bromide and the glucose into an aqueous solution of the bismuth nitrate pentahydrate by using a rubber head dropper, heating the solution in a water bath to 45 ℃, magnetically stirring the solution for 30min, transferring the mixed reaction solution into a reaction kettle, and reacting the mixed reaction solution for 16h in an oven at the constant temperature of 140 ℃; cooling, filtering, cleaning and collecting the precipitate; the precipitate was dried in an oven at 70 ℃ for 12h to give a precursor. 0.6098g of precursor and 0.9319g of bismuth oxide are weighed and put in a mortar to be ground until the particle size is 50-100 mu m, then the mixture is put in a muffle furnace to be calcined for 5h at 400 ℃, and then calcined for 1h at 500 ℃, and the obtained solid powder is modified Bi3O4Br photocatalyst.
Modified Bi prepared in example 1 and example 23O4Br and conventional unmodified Bi3O4Br is subjected to a visible light photocatalytic activity test. The mixed liquid of organic boron and acrylamide is adopted to simulate the waste liquid of the oil field, and the original concentration of the organic boron and the acrylamide in the mixed liquid is 10 mg/L. A500W xenon lamp is used as a light source, the full wavelength is adopted, the dosage is 0.05g each time, the oil field waste liquid is 100mL, and the concentration content of the catalyst in the waste liquid is 0.5 g/L. The change of the organic matter concentration in the waste liquid before and after the illumination was measured by an ultraviolet-visible spectrophotometer (model UV-1600PC), and the measurement results are shown in table 1 and fig. 3. It can be seen that the modified Bi3O4The efficiency of Br for removing the organic boron and the acrylamide under the illumination condition is Bi3O41.4 times Br catalyst, and even higher. Thus, the modified Bi prepared by the present invention3O4The Br catalyst has better catalytic performance and can be applied to the field of treating oil field waste liquid by a photocatalytic oxidation method.
TABLE 1 modified Bi3O4Degradation efficiency of Br photocatalyst for degradation treatment of oilfield organic matter
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. Bi for treating oil field waste liquid organic matter3O4The preparation method of the Br photocatalyst is characterized by comprising the following steps:
s1, dissolving a bismuth-containing compound in distilled water, and dissolving a bromine-containing compound and glucose in another part of distilled water, wherein the molar weights of bismuth and bromine are equal;
s2, dropwise adding the water solution containing the bromine compound and glucose into the water solution containing the bismuth compound, and stirring for 20-40 min;
s3, transferring the reaction liquid into a reaction kettle, reacting at the constant temperature of 140-150 ℃ for 15-16h, filtering out a product, and drying at 70 ℃ to obtain a precursor;
s4 molar amount of precursor and Bi2O3Mixing and grindingCalcining the powder in a muffle furnace at the constant temperature of 400-3O4Br photocatalyst.
2. The Bi for treating oilfield waste liquid organic matter of claim 13O4The preparation method of the Br photocatalyst is characterized in that in step S1, the molar ratio of bismuth element, bromine element and glucose is 2:2: 1.
3. The Bi for treating oilfield waste liquid organic matter as defined in claim 23O4The preparation method of the Br photocatalyst is characterized in that in step S2, under the stirring condition, the aqueous solution of the bromine-containing compound and glucose is dropwise added into the aqueous solution of the bismuth-containing compound, the temperature is raised to 45 ℃, and the mixture is stirred at constant temperature for 20-30 min.
4. The Bi for treating oilfield waste liquid organic matter of claim 33O4The preparation method of the Br photocatalyst is characterized in that in step S3, the temperature is raised to 145 ℃ in a reaction kettle, the reaction is carried out for 16h at constant temperature, and after natural cooling, a product is filtered out and dried at 70 ℃ to obtain a precursor.
5. The Bi for treating oilfield waste liquid organic matter of claim 33O4The preparation method of the Br photocatalyst is characterized in that in step S4, a precursor and Bi are added2O3Mixing and grinding the mixture to powder with the particle size of 50-100 mu m, calcining the powder in a muffle furnace at the constant temperature of 400 ℃ for 5 hours, and calcining at the constant temperature of 500 ℃ for 1 hour to obtain modified Bi3O4Br photocatalyst.
6. The Bi for treating oilfield waste liquid organic matter of claim 13O4The preparation method of the Br photocatalyst is characterized in that the bismuth-containing compound is bismuth nitrate pentahydrate, and the bromine-containing compound is potassium bromide.
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| CN102553619A (en) * | 2011-12-22 | 2012-07-11 | 华中师范大学 | Visible-light catalyst Bi3O4Br and preparation method thereof |
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| CN107572585A (en) * | 2017-09-08 | 2018-01-12 | 华南师范大学 | A kind of bismuth oxybromide visible light catalyst and preparation method thereof |
| CN109603861A (en) * | 2018-11-14 | 2019-04-12 | 西南石油大学 | Ag-AgICl/Bi3O4Br0.5Cl0.5Composite photocatalyst and preparation method and application thereof |
| CN111686767A (en) * | 2020-05-21 | 2020-09-22 | 华南理工大学 | Microspherical Bi3O4Preparation and application of Cl/BiOI compound |
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2020
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| CN102553619A (en) * | 2011-12-22 | 2012-07-11 | 华中师范大学 | Visible-light catalyst Bi3O4Br and preparation method thereof |
| CN107497457A (en) * | 2017-06-12 | 2017-12-22 | 南阳师范学院 | A kind of Bi3O4Cl0.5Br0.5Mischcrystal photocatalyst and its preparation and application |
| CN107572585A (en) * | 2017-09-08 | 2018-01-12 | 华南师范大学 | A kind of bismuth oxybromide visible light catalyst and preparation method thereof |
| CN109603861A (en) * | 2018-11-14 | 2019-04-12 | 西南石油大学 | Ag-AgICl/Bi3O4Br0.5Cl0.5Composite photocatalyst and preparation method and application thereof |
| CN111686767A (en) * | 2020-05-21 | 2020-09-22 | 华南理工大学 | Microspherical Bi3O4Preparation and application of Cl/BiOI compound |
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| Synthesis of BiOBr, Bi3O4Br, and Bi12O17Br2 by controlled hydrothermal method and their photocatalytic properties;Kun-Lin Li et al.;《Journal of the Taiwan Institute of Chemical Engineers》;20140513;第45卷;第2688-2697页 * |
| 石墨烯负载Bi3O4Br复合光催化剂的制备及其活性研究;吴建成;《广州化工》;20160731;第99-102页 * |
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Inventor after: Zhang Xu Inventor after: Jiao Guoying Inventor after: Wang Qi Inventor after: Li Jun Inventor after: Yang Bo Inventor after: Zhang Ying Inventor after: Wang Jie Inventor after: Lv Hong Inventor after: Liu Weihua Inventor after: Yang Ping Inventor after: Liang Bing Inventor after: Sun Fengjing Inventor after: Ye Changqing Inventor after: Shi Shuqiang Inventor after: Wang Jun Inventor after: Ding Zhongpei Inventor before: Zhang Xu Inventor before: Ye Changqing Inventor before: Shi Shuqiang Inventor before: Wang Jun Inventor before: Ding Zhongpei Inventor before: Jiao Guoying Inventor before: Wang Qi Inventor before: Li Jun Inventor before: Yang Bo Inventor before: Zhang Ying Inventor before: Wang Jie Inventor before: Lin Yongmao Inventor before: Lv Hong Inventor before: Zhan Guowei Inventor before: Li Zuyou Inventor before: Liu Weihua Inventor before: Yang Ping Inventor before: Wang Xingwen Inventor before: Liang Bing Inventor before: Sun Fengjing |