CN109133452A - A kind of magnalium hydrotalcite load TiO2The method of photocatalysis adsorbent material processing tetracycline antibiotics waste water - Google Patents
A kind of magnalium hydrotalcite load TiO2The method of photocatalysis adsorbent material processing tetracycline antibiotics waste water Download PDFInfo
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- CN109133452A CN109133452A CN201810989588.6A CN201810989588A CN109133452A CN 109133452 A CN109133452 A CN 109133452A CN 201810989588 A CN201810989588 A CN 201810989588A CN 109133452 A CN109133452 A CN 109133452A
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- Prior art keywords
- waste water
- tetracycline antibiotics
- adsorbent material
- photocatalysis
- magnalium hydrotalcite
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- 239000002351 wastewater Substances 0.000 title claims abstract description 69
- 229940072172 tetracycline antibiotic Drugs 0.000 title claims abstract description 62
- 239000000463 material Substances 0.000 title claims abstract description 59
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 50
- 229910001051 Magnalium Inorganic materials 0.000 title claims abstract description 45
- 239000003463 adsorbent Substances 0.000 title claims abstract description 44
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 title claims abstract description 44
- 229960001545 hydrotalcite Drugs 0.000 title claims abstract description 44
- 229910001701 hydrotalcite Inorganic materials 0.000 title claims abstract description 44
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012545 processing Methods 0.000 title claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000013019 agitation Methods 0.000 claims abstract description 13
- 230000005291 magnetic effect Effects 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 9
- 239000004098 Tetracycline Substances 0.000 claims description 24
- 235000019364 tetracycline Nutrition 0.000 claims description 23
- 150000003522 tetracyclines Chemical class 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 9
- 239000006228 supernatant Substances 0.000 claims description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 9
- 230000003115 biocidal effect Effects 0.000 claims description 8
- 238000000870 ultraviolet spectroscopy Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 229940040944 tetracyclines Drugs 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- 235000012222 talc Nutrition 0.000 claims 1
- 239000000454 talc Substances 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 13
- 238000006731 degradation reaction Methods 0.000 abstract description 13
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 239000006227 byproduct Substances 0.000 abstract description 7
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000035484 reaction time Effects 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- -1 meanwhile Substances 0.000 abstract description 2
- 239000003053 toxin Substances 0.000 abstract description 2
- 231100000765 toxin Toxicity 0.000 abstract description 2
- 229960002180 tetracycline Drugs 0.000 description 17
- 229930101283 tetracycline Natural products 0.000 description 17
- 230000000694 effects Effects 0.000 description 9
- 238000002835 absorbance Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000004435 EPR spectroscopy Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 2
- CYDMQBQPVICBEU-UHFFFAOYSA-N chlorotetracycline Natural products C1=CC(Cl)=C2C(O)(C)C3CC4C(N(C)C)C(O)=C(C(N)=O)C(=O)C4(O)C(O)=C3C(=O)C2=C1O CYDMQBQPVICBEU-UHFFFAOYSA-N 0.000 description 2
- 229960004475 chlortetracycline Drugs 0.000 description 2
- CYDMQBQPVICBEU-XRNKAMNCSA-N chlortetracycline Chemical compound C1=CC(Cl)=C2[C@](O)(C)[C@H]3C[C@H]4[C@H](N(C)C)C(O)=C(C(N)=O)C(=O)[C@@]4(O)C(O)=C3C(=O)C2=C1O CYDMQBQPVICBEU-XRNKAMNCSA-N 0.000 description 2
- 235000019365 chlortetracycline Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000005297 material degradation process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000004099 Chlortetracycline Substances 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 1
- 229940075397 calomel Drugs 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003987 organophosphate pesticide Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000036632 reaction speed Effects 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
-
- 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
Abstract
The invention discloses a kind of magnalium hydrotalcites to load TiO2The method that photocatalysis adsorbent material handles tetracycline antibiotics waste water, including weigh magnalium hydrotalcite load TiO2Photocatalysis adsorbent material, and be scattered in tetracycline antibiotics waste water；Under normal temperature conditions, the pH=3-11 of waste water is adjusted using acid solution and aqueous slkali；With ultraviolet light waste water, meanwhile, waste water is stirred, reacts waste water under the conditions of magnetic agitation.The invention has the following advantages: the reaction time is short, reaction temperature room temperature, applicable pH range is big, low energy consumption, high to the tetracycline antibiotics degradation rate in waste water, salinity is high, disinfection by-products open loop low toxin, there is very big realistic meaning and the market competitiveness；Meanwhile the present invention has photocatalysis and absorbing synergic effect to tetracycline antibiotics in waste water.
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of magnalium hydrotalcite load TiO2At photocatalysis adsorbent material
The method for managing tetracycline antibiotics waste water.
Background technique
Tetracycline antibiotics waste water belongs to difficult waste water, and processing tetracycline antibiotics are useless in industry both at home and abroad at present
The main methods of water have physisorphtion, biological degradation method and advanced oxidation degradation method.Physisorphtion handles antibiotic
The effect of waste water is preferable, but is also easy to produce solid secondary pollution；Low energy consumption, at low cost for biodegrade processing, but microorganism has
Specificity, a certain quasi-microorganism only has treatment effect to specific antibiotic, and technology controlling and process is more complicated, operation cost
It is high；Advanced oxidation is that antibiotic waste water handles technology most with prospects, and maximum feature is non-selectivity, can almost be used
In water biological treatment organic pollutant in distress degradation.
Existing tetracycline antibiotics wastewater treatment method, disclose photocatalysis combination electrode and preparation method thereof and
Application in the treatment of waste water, this method using photoelectrocatalysis method realize water in antibiotic degradation, first using butyl titanate,
Bismuth nitrate, graphene oxide and glass electrode prepare Bi4Ti3O12/ graphene oxide/glassy carbon electrode, and as work electricity
Pole, platinum filament and calomel electrode are used as to electrode and reference electrode, under applied voltage and ultraviolet lamp effect, photoelectric catalysis degrading water
In occrycetin and aureomycin, pass through the variation of occrycetin and chlortetracycline concentration in liquid chromatogram measuring waste water, meter
Calculate the removal rate of organophosphorus pesticide.Its shortcoming is that material and method to the degradation rate and mine of the tetracycline antibiotics in water
Change degree is not mentioned, and treatment effect is fuzzy.
Summary of the invention
In view of this, reaction temperature room temperature, applicable pH range short the embodiment provides a kind of reaction time
Greatly, low energy consumption, magnalium hydrotalcite high to the tetracycline antibiotics degradation rate in waste water, that salinity is high load TiO2Photocatalysis
The method of adsorbent material processing tetracycline antibiotics waste water.
The embodiment of the present invention provides a kind of magnalium hydrotalcite load TiO2It is anti-that photocatalysis adsorbent material handles Tetracyclines
The method of raw element waste water, specifically includes the following steps:
(1) magnalium hydrotalcite load TiO is weighed2Photocatalysis adsorbent material, and be scattered in tetracycline antibiotics and given up
In water；
(2) under normal temperature conditions, the pH=3-11 of waste water is adjusted using acid solution and aqueous slkali；
(3) ultraviolet light waste water is used, meanwhile, waste water is stirred, reacts waste water under the conditions of magnetic agitation, is i.e. realization magnesium
Aluminum hydrotalcite loads TiO2Processing of the photocatalysis adsorbent material to tetracycline antibiotics waste water.
Further, the concentration of tetracycline antibiotics aqueous solution is 20~100mg/L in the waste water.
Further, the magnalium hydrotalcite loads TiO2The matter of tetracycline antibiotics in photocatalysis adsorbent material and waste water
Amount is than being (5~25): 1.
Further, the power of the ultraviolet light is 300~500W.
Further, the rate of the magnetic agitation be 100-1000rpm, under the conditions of magnetic agitation react 100~
180min。
Further, in the step (3), treated waste water is separated by solid-liquid separation, solids is removed, takes supernatant
It is tested at 360nm using ultraviolet-visible spectrophotometer, obtains magnalium hydrotalcite load TiO2Photocatalysis adsorbent material pair
The removal rate of tetracycline antibiotics in waste water.
Further, it is separated by solid-liquid separation after treated water reuse syringe filters being taken out.
Further, the magnalium hydrotalcite loads TiO2Photocatalysis adsorbent material goes tetracycline antibiotics in waste water
Except rate is calculated by the following formula:
In formula: Co1 is the initial concentration (mg/l) of tetracycline antibiotics；Ct1 is the tetracycline antibiotics of t time
Concentration (mg/l), the value range of t are the time reacted under the conditions of magnetic agitation；η1For tetracycline antibiotics removal rate
(%).
Compared with prior art, the invention has the following advantages: the reaction time is short, reaction temperature room temperature, applicable pH
Range is big, low energy consumption, high to the tetracycline antibiotics degradation rate in waste water, salinity is high, disinfection by-products open loop toxicity is low
The advantages that, there is very big realistic meaning and the market competitiveness；In addition, the present invention under normal temperature conditions, weighs a certain amount of magnesium
Aluminum hydrotalcite loads TiO2Photocatalysis adsorbent material is launched in tetracycline antibiotics waste water, and magnalium hydrotalcite loads TiO2Light
Catalytic adsorption material surface in waste water has positive charge, has chemisorption to tetracycline antibiotics anion, from
And high density pollution object ion is formed around material granule, so that material interface forms organic pollutant enrichment environment, material
Quick release goes out hydroxyl radical free radical and the super oxygen base isoreactivity factor under ultraviolet irradiation condition, so that fast degradation Tetracyclines is anti-
Raw element and mineralization rate quickening；Meanwhile intermediate product or disinfection by-products also stay near material surface or interface,
And constantly constantly decomposed, finally it is mineralized into CO2, there is photocatalysis and absorbing synergic to make tetracycline antibiotics in waste water
With.
Detailed description of the invention
Fig. 1 is a kind of magnalium hydrotalcite load TiO of the present invention2Photocatalysis adsorbent material handles tetracycline antibiotics waste water
Method flow chart.
Fig. 2 be in the present invention tetracycline antibiotics magnalium hydrotalcite load TiO2Under the effect of photocatalysis adsorbent material
Degradation schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
Fig. 1 and Fig. 2 are please referred to, the embodiment provides a kind of magnalium hydrotalcites to load TiO2Photocatalysis adsorption material
The method of material processing tetracycline antibiotics waste water, specifically includes the following steps:
(1) magnalium hydrotalcite load TiO is weighed2Photocatalysis adsorbent material, and be scattered in tetracycline antibiotics and given up
In water；
The concentration of tetracycline antibiotics aqueous solution is 20~100mg/L in the waste water, the magnalium hydrotalcite load
TiO2The mass ratio of tetracycline antibiotics is (5~25) in photocatalysis adsorbent material and waste water: 1.
(2) under normal temperature conditions, the pH=3-11 of waste water is adjusted using acid solution and aqueous slkali；
(3) ultraviolet light waste water is used, meanwhile, waste water is stirred, reacts waste water under the conditions of magnetic agitation, ultraviolet light
Power is 300~500W, and the rate of the magnetic agitation is 100-1000rpm, react 100 under the conditions of magnetic agitation~
180min, i.e. realization magnalium hydrotalcite load TiO2Processing of the photocatalysis adsorbent material to tetracycline antibiotics waste water.
Treated waste water is separated by solid-liquid separation, treated waste water takes out laggard preferably by syringe filters
Row is separated by solid-liquid separation, and removes solids, is taken supernatant to test at 360nm using ultraviolet-visible spectrophotometer, is obtained magnalium
Hydrotalcite loads TiO2Removal rate of the photocatalysis adsorbent material to tetracycline antibiotics in waste water.
Magnalium hydrotalcite loads TiO2Photocatalysis adsorbent material to the removal rates of tetracycline antibiotics in waste water by with
Lower formula calculates:
In formula: Co1 is the initial concentration (mg/l) of tetracycline antibiotics；Ct1 is the tetracycline antibiotics of t time
Concentration (mg/l), the value range of t are the time reacted under the conditions of magnetic agitation；η1For tetracycline antibiotics removal rate
(%).
By the darkroom experiment and EPR electron paramagnetic resonance test to reaction solution, illustrate material to Tetracyclines antibiosis
The suction-operated and photocatalysis of element；TOC detection and GC-MS qualitative analysis to supernatant after reaction, it was demonstrated that material is to four
The microstructure of disinfection by-products is open loop after salinity height and degradation after the degradation of ring element, this illustrates the life of disinfection by-products
Object toxicity substantially reduces.
Using hydroxyl free during tetracycline antibiotics in EPR electron paramagnetic resonance detection material degradation removal waste water
The changes of contents of base and super oxygen base, it was demonstrated that its reaction mechanism.
Embodiment 1
A kind of magnalium hydrotalcite load TiO2The method that photocatalysis adsorbent material handles tetracycline antibiotics waste water, is answered
With step are as follows:
Weigh the magnalium hydrotalcite load TiO of 0.1g2Photocatalysis adsorbent material is scattered in the tetracycline of 200mL 100mgL
Aqueous solution；Under normal temperature conditions, pH value of solution=11 are adjusted using acid solution and aqueous slkali；Take the ultraviolet light of 400W power
React 120min.
Use ultraviolet-visible spectrophotometer at 360nm after taking supernatant liquid filtering solids using syringe filters
Tetracycline absorbance is tested, conversion tetracycline removal rate is 94%, salinity 35%.
Embodiment 2
A kind of magnalium hydrotalcite load TiO2The method that photocatalysis adsorbent material handles tetracycline antibiotics waste water, is answered
With step are as follows:
Weigh the magnalium hydrotalcite load TiO of 0.1g2Photocatalysis adsorbent material is scattered in the tetracycline water of 200mL 50mgL
Solution；Under normal temperature conditions, pH value of solution=11 are adjusted using acid solution and aqueous slkali；Take the ultraviolet light of 500W power anti-
Answer 180min.
Use ultraviolet-visible spectrophotometer at 360nm after taking supernatant liquid filtering solids using syringe filters
Tetracycline absorbance is tested, conversion tetracycline removal rate is 94.3%, salinity 40%.
Embodiment 3
A kind of magnalium hydrotalcite load TiO2The method that photocatalysis adsorbent material handles tetracycline antibiotics waste water, is answered
With step are as follows:
Weigh the magnalium hydrotalcite load TiO of 0.1g2Photocatalysis adsorbent material is scattered in the tetracycline water of 200mL 50mgL
Solution；Under normal temperature conditions, pH value of solution=7 are adjusted using acid solution and aqueous slkali；Take the ultraviolet light of 400W power anti-
Answer 120min.
Use ultraviolet-visible spectrophotometer at 360nm after taking supernatant liquid filtering solids using syringe filters
Tetracycline absorbance is tested, conversion tetracycline removal rate is 92%, salinity 40%.
Embodiment 4
A kind of magnalium hydrotalcite load TiO2The method that photocatalysis adsorbent material handles tetracycline antibiotics waste water, is answered
With step are as follows:
Weigh the magnalium hydrotalcite load TiO of 0.1g2Photocatalysis adsorbent material is scattered in the tetracycline water of 200mL 20mgL
Solution；Under normal temperature conditions, pH value of solution=3 are adjusted using acid solution and aqueous slkali；Take the ultraviolet light of 400W power anti-
Answer 120min.
Use ultraviolet-visible spectrophotometer at 360nm after taking supernatant liquid filtering solids using syringe filters
Tetracycline absorbance is tested, conversion tetracycline removal rate is 92.3%, salinity 74%.
Embodiment 5
A kind of magnalium hydrotalcite load TiO2The method that photocatalysis adsorbent material handles tetracycline antibiotics waste water, is answered
With step are as follows:
Weigh the magnalium hydrotalcite load TiO of 0.1g2Photocatalysis adsorbent material is scattered in the tetracycline water of 200mL 10mgL
Solution；Under normal temperature conditions, pH value of solution=5 are adjusted using acid solution and aqueous slkali；Take the ultraviolet light of 300W power anti-
Answer 120min.
Use ultraviolet-visible spectrophotometer at 360nm after taking supernatant liquid filtering solids using syringe filters
Tetracycline absorbance is tested, conversion tetracycline removal rate is 91%, salinity 65%.
It is as shown in table 1 to the comparison of tetracycline treatment effect and treatment effect of the present invention disclosed in the prior art, it is known that this
Invention removal rate is much higher than other materials, and reaction speed is fast, can clear salinity.
The comparison of tetracycline treatment effect and treatment effect of the present invention disclosed in 1 prior art of table
Reaction time of the invention is short, reaction temperature room temperature, applicable pH range are big, low energy consumption, to the Tetracyclines in waste water
Degradation of Antibiotics rate is high, salinity is high, disinfection by-products open loop low toxin, has very big realistic meaning and market competing
Strive power；In addition, the present invention under normal temperature conditions, weighs a certain amount of magnalium hydrotalcite load TiO2Photocatalysis adsorbent material is launched
Enter in tetracycline antibiotics waste water, magnalium hydrotalcite loads TiO2Photocatalysis adsorbent material surface in waste water has positive electricity
Lotus has chemisorption to tetracycline antibiotics anion, to form high density pollution object around material granule
Ion, so that material interface forms organic pollutant enrichment environment, material quick release under ultraviolet irradiation condition goes out hydroxyl certainly
By base and the super oxygen base isoreactivity factor, thus fast degradation tetracycline antibiotics and mineralization rate quickening；Meanwhile intermediate production
Object or disinfection by-products also stay near material surface or interface, and are constantly constantly decomposed, and are finally mineralized into
CO2, there is photocatalysis and absorbing synergic effect to tetracycline antibiotics in waste water.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of magnalium hydrotalcite loads TiO2The method that photocatalysis adsorbent material handles tetracycline antibiotics waste water, feature
It is, specifically includes the following steps:
(1) magnalium hydrotalcite load TiO is weighed2Photocatalysis adsorbent material, and be scattered in tetracycline antibiotics waste water；
(2) under normal temperature conditions, the pH=3-11 of waste water is adjusted using acid solution and aqueous slkali；
(3) ultraviolet light waste water is used, meanwhile, waste water is stirred, reacts waste water under the conditions of magnetic agitation, is i.e. realization magnalium water
Talcum loads TiO2Processing of the photocatalysis adsorbent material to tetracycline antibiotics waste water.
2. magnalium hydrotalcite according to claim 1 loads TiO2It is useless that photocatalysis adsorbent material handles tetracycline antibiotics
The method of water, which is characterized in that the concentration of tetracycline antibiotics aqueous solution is 20~100mg/L in the waste water.
3. magnalium hydrotalcite according to claim 1 loads TiO2It is useless that photocatalysis adsorbent material handles tetracycline antibiotics
The method of water, which is characterized in that the magnalium hydrotalcite loads TiO2Tetracyclines antibiosis in photocatalysis adsorbent material and waste water
The mass ratio of element is (5~25): 1.
4. magnalium hydrotalcite according to claim 1 loads TiO2It is useless that photocatalysis adsorbent material handles tetracycline antibiotics
The method of water, which is characterized in that the power of the ultraviolet light is 300~500W.
5. magnalium hydrotalcite according to claim 1 loads TiO2It is useless that photocatalysis adsorbent material handles tetracycline antibiotics
The method of water, which is characterized in that the rate of the magnetic agitation be 100-1000rpm, under the conditions of magnetic agitation react 100~
180min。
6. magnalium hydrotalcite according to claim 1 loads TiO2It is useless that photocatalysis adsorbent material handles tetracycline antibiotics
The method of water, which is characterized in that in the step (3), treated waste water is separated by solid-liquid separation, solids is removed, takes
Supernatant is tested at 360nm using ultraviolet-visible spectrophotometer, obtains magnalium hydrotalcite load TiO2Photocatalysis absorption
Removal rate of the material to tetracycline antibiotics in waste water.
7. magnalium hydrotalcite according to claim 6 loads TiO2It is useless that photocatalysis adsorbent material handles tetracycline antibiotics
The method of water, which is characterized in that be separated by solid-liquid separation after taking out treated water reuse syringe filters.
8. magnalium hydrotalcite according to claim 6 loads TiO2It is useless that photocatalysis adsorbent material handles tetracycline antibiotics
The method of water, which is characterized in that the magnalium hydrotalcite loads TiO2Photocatalysis adsorbent material is to Tetracyclines antibiosis in waste water
The removal rate of element is calculated by the following formula:
In formula: Co1 is the initial concentration (mg/l) of tetracycline antibiotics；Ct1 is the concentration of the tetracycline antibiotics of t time
(mg/l), the value range of t is the time reacted under the conditions of magnetic agitation；η1For tetracycline antibiotics removal rate (%).
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| CN116242793A (en) * | 2023-01-08 | 2023-06-09 | 北京工业大学 | Method for comparing inhibition degree of photocatalytic removal of different natural organic matters on antibody |
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| CN116242793A (en) * | 2023-01-08 | 2023-06-09 | 北京工业大学 | Method for comparing inhibition degree of photocatalytic removal of different natural organic matters on antibody |
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