CN106315818A - Application of V2O5/CeO2 composite nano-material in degradation of cefalexin-containing wastewater - Google Patents
Application of V2O5/CeO2 composite nano-material in degradation of cefalexin-containing wastewater Download PDFInfo
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- CN106315818A CN106315818A CN201610842237.3A CN201610842237A CN106315818A CN 106315818 A CN106315818 A CN 106315818A CN 201610842237 A CN201610842237 A CN 201610842237A CN 106315818 A CN106315818 A CN 106315818A
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- cefalexin
- ceo
- waste water
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- 229910000422 cerium(IV) oxide Inorganic materials 0.000 title claims abstract description 54
- ZAIPMKNFIOOWCQ-UEKVPHQBSA-N cephalexin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@@H]3N(C2=O)C(=C(CS3)C)C(O)=O)=CC=CC=C1 ZAIPMKNFIOOWCQ-UEKVPHQBSA-N 0.000 title claims abstract description 44
- 229940106164 cephalexin Drugs 0.000 title claims abstract description 44
- 239000002351 wastewater Substances 0.000 title claims abstract description 38
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 title abstract description 12
- 230000015556 catabolic process Effects 0.000 title abstract description 8
- 238000006731 degradation reaction Methods 0.000 title abstract description 8
- 239000002131 composite material Substances 0.000 title abstract description 7
- 239000002086 nanomaterial Substances 0.000 title abstract 6
- 230000010355 oscillation Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 43
- 239000002114 nanocomposite Substances 0.000 claims description 34
- 230000033228 biological regulation Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 4
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 2
- 230000003115 biocidal effect Effects 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 8
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 239000003242 anti bacterial agent Substances 0.000 abstract 1
- 229940088710 antibiotic agent Drugs 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 238000002835 absorbance Methods 0.000 description 8
- 230000009514 concussion Effects 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000003814 drug Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229930186147 Cephalosporin Natural products 0.000 description 2
- 239000004098 Tetracycline Substances 0.000 description 2
- 229940124587 cephalosporin Drugs 0.000 description 2
- 150000001780 cephalosporins Chemical class 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- -1 sulphur Amine Chemical class 0.000 description 2
- 235000019364 tetracycline Nutrition 0.000 description 2
- 150000003522 tetracyclines Chemical class 0.000 description 2
- 229940040944 tetracyclines Drugs 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- YRMCBQLZVBXOSJ-PCFSSPOYSA-N (e)-3-[(6r,6as)-4-hydroxy-6-methoxy-3-methyl-11-oxo-5,6,6a,7-tetrahydropyrrolo[2,1-c][1,4]benzodiazepin-8-yl]prop-2-enamide Chemical compound CO[C@H]1NC2=C(O)C(C)=CC=C2C(=O)N2C=C(\C=C\C(N)=O)C[C@@H]12 YRMCBQLZVBXOSJ-PCFSSPOYSA-N 0.000 description 1
- XWNSFEAWWGGSKJ-UHFFFAOYSA-N 4-acetyl-4-methylheptanedinitrile Chemical compound N#CCCC(C)(C(=O)C)CCC#N XWNSFEAWWGGSKJ-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- DCXYFEDJOCDNAF-REOHCLBHSA-N L-asparagine Chemical compound OC(=O)[C@@H](N)CC(N)=O DCXYFEDJOCDNAF-REOHCLBHSA-N 0.000 description 1
- 229930182555 Penicillin Natural products 0.000 description 1
- 239000004153 Potassium bromate Substances 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 229940126575 aminoglycoside Drugs 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 239000007952 growth promoter Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000003907 kidney function Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003908 liver function Effects 0.000 description 1
- 239000003120 macrolide antibiotic agent Substances 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002960 penicillins Chemical class 0.000 description 1
- 229950000845 politef Drugs 0.000 description 1
- 229940094037 potassium bromate Drugs 0.000 description 1
- 235000019396 potassium bromate Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000007660 quinolones Chemical class 0.000 description 1
- 238000000611 regression analysis Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000837 restrainer Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 238000005303 weighing 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
- C02F1/725—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
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
-
- 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
- C02F2305/08—Nanoparticles or nanotubes
Abstract
The invention belongs to the technical field of treatment of antibiotics and particularly discloses an application of a V2O5/CeO2 composite nano-material in degradation of cefalexin-containing wastewater. The application comprises the steps of adjusting the initial concentration of cefalexin in the wastewater to 20mg/L to 120mg/L, adjusting the pH value of the wastewater to 2 to 7, then, adding 5mg to 30mg of the V2O5/CeO2 composite nano-material into per 20mL of wastewater, and finally, carrying out isothermal oscillation for 1 to 6 hours at the temperature of 25 DEG C to 70 DEG C. The V2O5/CeO2 composite nano-material has an obvious oxidative catalysis action on cefalexin antibiotic, the degradation effect is optimal under the conditions that the concentration of the wastewater is 40mg/L, the pH of the wastewater is 3, the dosage is 20mg, the temperature is 50 DEG C, and the oscillation time is 2 hours, and the removal efficiency can reach 64.54% to 69.13%. Under the optimal degradation conditions of the V2O5/CeO2 composite nano-material, the V2O5/CeO2 composite nano-material has better effect and higher efficiency to the degradation of the cefalexin antibiotic compared with pure nano-CeO2.
Description
Technical field
The invention belongs to the processing technology field of antibiotic, be specifically related to V2O5/CeO2Nano composite material contains head in degraded
Application in cefalexin waste water.
Background technology
China is to use the country that antibiotic is relatively more in the world, but owing to lacking about antibiosis the most always
The emissions data more accurately of element, so having no knowledge about the China's real behaviour in service to antibiotic so far.Recently, according to
The investigation that the service condition of the antibiotic of various places is carried out by the Chinese Academy of Sciences shows, China is between 2013 these years about 50,000
Ton garbage in antibiotic enters in soil and water resources, and this is higher than the developed countries such as American-European-Japanese the most out and away.Due to antibiotic
A large amount of uses so that it is health and environment are caused potential hazard, especially the growth promoter to child.To child
Speech, can reduce the resistance against diseases of child, the hepatic and renal function of damage child to body input antibiotic, and in causing child's body, flora loses
Adjust, cause human allergy to react, drug tolerant bacteria, i.e. superbacteria more frighteningly occur.There are some researches show microorganism drug resistance
The development of property has been able to catch up with the even more than mankind to new antibiotic development and production speed.The antibiotic come into operation now
There are penicillins, cephalosporins, lactamase restrainer, aminoglycoside, amide-type, Macrolide, Tetracyclines, sulphur
Amine, quinolones, furans, nitre imidazoles, wherein Tetracyclines is relatively big due to its hazard ratio, has had logged out market, and
Cephalosporins is used for treating various disease, and substantial amounts of use but can not be absorbed by organisms completely, and the garbage of discharge is to ring
The biggest pollution is caused in border, it is therefore desirable to searches out a kind of effective method of simple and fast and processes antibiotic.
Summary of the invention
For overcoming an existing antibiotic treatment difficult problem, the purpose of the present invention aims to provide a kind of V2O5/CeO2Nano composite material
Application in degraded is containing cefalexin waste water.
For achieving the above object, the technical scheme that the present invention takes is as follows:
V2O5/CeO2Nano composite material application in degraded is containing cefalexin waste water: in regulation waste water, cefalexin is initial
Concentration is at 20 ~ 120 mg/L, pH value of waste water 2 ~ 7, and then every 20mL waste water adds 5 ~ 30 mg V2O5/CeO2Nano combined material
Material, finally constant temperature oscillation 1 ~ 6h at 25 ~ 70 DEG C,.
Most preferably, in regulation waste water, the initial concentration of cefalexin is at 40 mg/L, pH value of waste water 3, and then every 20mL gives up
Water adds 20 mg V2O5/CeO2Nano composite material, finally constant temperature oscillation 2h at 50 DEG C.
Further, V2O5/CeO2Nano composite material prepares by the following method: by ammonium metavanadate and nano Ce O2, add water
After stirring and dissolving, continuously stirred lower dipping at least 12h, then it is evaporated cooling, then roasting at least 4h at 300 ~ 350 DEG C, natural
It is cooled to room temperature and obtains V2O5/CeO2Nano composite material.
In the present invention, nano Ce O2Can prepare by prior art.
Beneficial effect:
(1) V2O5/CeO2Nano composite material has obvious oxidation catalysis effect to cefalexin antibiotic, at waste strength
For 40mg/L, wastewater pH is 3, and dosage is 20mg, and temperature is 50 DEG C, and the concussion time is that degradation effect is optimal under conditions of 2h,
Removal efficiency is up to 64.54 ~ 69.13%；
(2) it is experimentally confirmed, at V2O5/CeO2Under the optimal degradation condition of nano composite material, V2O5/CeO2Nano combined material
Material is than simple nano Ce O2The effect of degraded cefalexin antibiotic more preferably, efficiency faster.
Accompanying drawing explanation
Fig. 1: nano Ce O2XRD figure.
Fig. 2: nano Ce O2SEM figure.
Fig. 3: V2O5/CeO2The XRD figure of nano composite material.
Fig. 4: V2O5/CeO2The SEM figure that nano composite material obtains in zones of different scanning.
The standard curve of Fig. 5: cefalexin.
Fig. 6: the cefalexin clearance under different pH.
Fig. 7: the cefalexin clearance under different antibiotic initial concentrations.
Cefalexin clearance under Fig. 8: different temperatures.
Fig. 9: different V2O5/CeO2Cefalexin clearance under nano composite material dosage.
Figure 10: the cefalexin clearance under the different concussion times.
Figure 11: V2O5/CeO2Nano composite material and simple nano Ce O2The block diagram effect pair of degraded cefalexin
Ratio.
Detailed description of the invention
Below the description of specific embodiment elaborates a lot of detail so that fully understanding the present invention, but this
Invention can also use other to be different from alternate manner described here to implement, therefore the present invention not by following public specifically
The restriction of embodiment.
The impact of embodiment 1--pH value
The first step, prepares nano Ce O2:
First, the Ce(NO of 0.585g is weighed with ten thousand/balance3)3·6H2O puts in large beaker, weighs 2.25g the most again
Potassium bromate. pour in large beaker, add 100ml deionized water after on magnetic stirring apparatus stirring and dissolving, weigh after dissolving
0.60g altheine adds in large beaker, and allows it fully dissolve until solution clarification, is subsequently poured into politef
In reactor, being put into by reactor in baking oven, design temperature is 140 DEG C, takes out and be cooled to room temperature, by supernatant after reaction 24h
Liquid is outwelled, and remaining material is transferred in the centrifuge tube of 10ml, centrifugal in centrifuge, then is centrifuged with deionized water rinsing,
Until by its thorough wash clean, finally putting in thermostatic drying chamber by centrifuge tube, design temperature is 65 DEG C, after being dried 12h
The end product obtained is nano Ce O2, it presents flaxen powder, and its XRD is as it is shown in figure 1, its characteristic peaks
At 29 °, 34 °, 48 °, 57 °, not having miscellaneous peak in collection of illustrative plates, peak is narrow and long, illustrates that ceria crystallization is the most complete；Its SEM figure is such as 2
Shown in, it can be seen that the nano Ce O prepared2Structure comparison uniformity, and smooth surface, present hollow spheres.
Second step, prepares V2O5/CeO2Nano composite material:
Take the ammonium metavanadate of 0.16g in the small beaker of 80ml, be subsequently adding the deionized water stirring and dissolving of 30ml, the most directly
By the CeO of 0.50g2Add in solution, under the conditions of magnetic stirrer, impregnate 12h, then with Rotary Evaporators at 80 DEG C
Under be evaporated cooling, then with Muffle furnace roasting 4h at 300 DEG C, naturally cool to room temperature and obtain dark yellow powder, be just V2O5/
CeO2Nano composite material, its XRD is as it is shown on figure 3, be wherein V at 28.3 °, 32.8 °, 47.3 °, 56.1 °2O5/CeO2Nanometer is multiple
The peak value of condensation material；According to document (Gu X, Jiazen Ge J, Zhang H, Aurox A, Shen J.
Structural, redox and acid e base properties of V2O5/CeO2 catalyst. [J]
Thermochim Acta, 2006,451:84-93) understand: 32.4 °, 33.1 ° is V at 300 DEG C2O5And CeO2React
The CeVO generated4Peak value；The V of preparation2O5/CeO2The SEM of material schemes as shown in Figure 4, V2O5It is attached to hollow spheres CeO2's
Surface, also some enters the space of hollow ball.
3rd step, V2O5/CeO2Nano composite material application in degraded is containing cefalexin waste water:
In regulation waste water, the initial concentration of cefalexin is at 40 mg/L, and regulation pH is 2,3,4,5,6,7 respectively, takes 20mL and gives up
Water, in the conical flask of six 50ml, is separately added into the V of 5mg the most again2O5/CeO2Nano composite material, finally permanent at 50 DEG C
Temperature concussion 1h.
4th step, the test of clearance:
The 4.1 dry product 0.1000g (accurately to 0.0001g) accurately weighing cefalexin, put into burning by the cefalexin weighed
Cup is also dissolved in deionized water, after all dissolving, moves into and be settled in the volumetric flask of 1000 mL, as 100mg/L
Storing solution, then based on this storing solution, as shown in table 1, adjust cefalexin concentration respectively, and under wavelength 262 nm
Measure absorbance.
Mapping concentration C with absorbance A, and curve is carried out regression analysis, result is as shown in Figure 5.Can from Fig. 5
Go out: the concentration C of cefalexin and absorbance A meet linear relationship in wider concentration range, and the relationship of the two is A=0.0174C
+ 0.0499, correlation coefficient is R2=0.9876, meet this relational expression in the range of 0～120mg/L, within the range, pass through A-C
Relational expression can be obtained the concentration of solution by the absorbance recorded.
4.2 degradation effects--the calculating of cefalexin clearance
4.2.1, in the 3rd step, after regulating waste strength and pH value, V is added2O5/CeO2Before nano composite material, survey
Amount absorbance, as A0；
4.2.2, after completing by the 3rd step, absorbance is measured, as A1；
4.2.3 due to V2O5/CeO2Nano composite material has color, therefore needs to remove background value, method particularly includes: with equivalent
Deionized water replace in the 3rd step containing cefalexin waste water, then under conditions of identical with the 3rd step (include pH value,
V2O5/CeO2The dosage of nano composite material, isothermal vibration temperature and time) process after, measure absorbance, as background value
A2；
The most all under wavelength 262 nm, utilize measurement of ultraviolet-visible spectrophotometer absorbance.The most as the following formula,
Calculate the cefalexin clearance under different pH.
。
Result is as shown in Figure 6, it will thus be seen that along with the rising of pH value, and clearance is gradually increasing, and when pH is 3, obtains
Maximum clearance is 33.69%, and then clearance is gradually lowered down again.Therefore available conclusion is when pH is 3, can reach
The highest clearance, the highest clearance is 33.69%.
The impact of embodiment 2--antibiotic initial concentration
The first step, second step are with embodiment 1.
3rd step: respectively in regulation waste water the initial concentration of cefalexin at 20,40,60,80,100,120 mg/L, and
Regulation pH is 3, takes 20mL waste water in the conical flask of six 50ml, is separately added into the V of 5mg the most again2O5/CeO2Nano combined
Material, finally isothermal vibration 2h at 50 DEG C.
4th step, with embodiment 1, calculates the cefalexin clearance under different antibiotic initial concentration.
Result is as shown in Figure 7, it will thus be seen that concentration rises to 40mg/L from 20mg/L, and its clearance raises from 11.31%
To 30.80%, then concentration is increased to 120mg/L from 40mg/L, and its clearance is reduced to 7.23% from 30.80%, it is known that in concentration
The highest for clearance during 40mg/L, about 30% can be arrived.
The impact of embodiment 3--temperature
The first step, second step are with embodiment 1.
3rd step: in regulation waste water, the initial concentration of cefalexin is at 40 mg/L, and to regulate pH be 3, take 20mL waste water in
In the conical flask of six 50ml, then add the V of 5mg2O5/CeO2Nano composite material, the most respectively 25,30,40,50,
60, isothermal vibration 2h at 70 DEG C.
4th step, with embodiment 1, calculates the cefalexin clearance under different temperatures.
Result is as shown in Figure 8, it will thus be seen that temperature is when room temperature to 50 DEG C, and clearance is gradually increased, along with temperature
Increase clearance substantially to tend to be steady, therefore therefore deduce that, when temperature is 50 DEG C, clearance can arrive best effect,
Can reach 55.61%.
Embodiment 4--V2O5/CeO2The impact of nano composite material dosage
The first step, second step are with embodiment 1.
3rd step: in regulation waste water, the initial concentration of cefalexin is at 40 mg/L, and to regulate pH be 3, take 20mL waste water in
In the conical flask of six 50ml, it is separately added into the V of 5mg, 10mg, 15mg, 20mg, 25mg, 30mg the most again2O5/CeO2Nanometer is multiple
Condensation material, finally isothermal vibration 2h at 50 DEG C.
4th step, with embodiment 1, calculates different V2O5/CeO2Cefalexin under nano composite material dosage is removed
Rate.
Result is as shown in Figure 9, it will thus be seen that medicine (i.e. V2O5/CeO2Nano composite material) dosage from 5mg increase
During to 20mg, being gradually increased the clearance approximate trend of antibiotic, when 20mg to 30mg, change is basic the most steadily,
It follows that clearance to cefalexin can reach 64.54% when dosage is 20mg when, therefore optimal medicine
Dosage is 20mg.
The impact of embodiment 5--concussion time
The first step, second step are with embodiment 1.
3rd step: in regulation waste water, the initial concentration of cefalexin is at 40 mg/L, and to regulate pH be 3, take 20mL waste water in
In the conical flask of six 50ml, then add the V of 20mg2O5/CeO2Nano composite material, finally difference constant temperature at 50 DEG C
Concussion 1h, 2h, 3h, 4h, 5h, 6h.
4th step, with embodiment 1, calculates the cefalexin clearance under the different concussion time.
Result is as shown in Figure 10, it will thus be seen that the concussion time, its trend presented obvious decline trend from 1h to 6h,
1-2h, curve increases slowly, and at 2-3h, curve drops suddenly, is gradually increasing again at 3-4h, reduces the most again, wherein during earthquake
Between when be 2h, its clearance is up to 69.13%, therefore the available optimal concussion time is 2h, when most preferably shaking
The highest clearance obtained under between is 69.13%.
The result of integrated embodiment 1-5, it is known that, degraded optimum condition is: the initial concentration of cefalexin in regulation waste water
At 40 mg/L, pH value of waste water 3, then every 20mL waste water adds 20 mg V2O5/CeO2Nano composite material, finally at 50 DEG C
Lower constant temperature oscillation 2h.At optimum conditions, cefalexin clearance is between 64.54% ~ 69.13%.
Embodiment 6--V2O5/CeO2Nano composite material and simple nano Ce O2The Contrast on effect of degraded cefalexin
Absorption 20mL 100mg/L embodiment 1 cefalexin storing solution is in the conical flask of two 50ml respectively, the most wherein
One conical flask adds the ceria of 5mg embodiment 1 preparation, another conical flask adds 5mg embodiment 1 preparation
V2O5/CeO2Nano composite material, finally isothermal vibration 2h at 50 DEG C.
By embodiment 1 four-step method, calculate respectively and add ceria and V2O5/CeO2The cephalo of nano composite material
Ammonia benzyl clearance, result as shown in figure 11, can obtain the clearance of ceria less than V2O5/CeO2Nano composite material pair
The clearance of cefalexin.
Claims (3)
1.V2O5/CeO2Nano composite material application in degraded is containing cefalexin waste water, it is characterised in that: in regulation waste water
The initial concentration of cefalexin is at 20 ~ 120 mg/L, pH value of waste water 2 ~ 7, and then every 20mL waste water adds 5 ~ 30 mg V2O5/
CeO2Nano composite material, finally constant temperature oscillation 1 ~ 6h at 25 ~ 70 DEG C,.
Apply the most as claimed in claim 1, it is characterised in that: regulation waste water in cefalexin initial concentration 40 mg/L,
PH value of waste water is 3, and then every 20mL waste water adds 20 mg V2O5/CeO2Nano composite material, finally constant temperature oscillation at 50 DEG C
2h。
Apply the most as claimed in claim 1 or 2, it is characterised in that V2O5/CeO2Nano composite material prepares by the following method:
By ammonium metavanadate and nano Ce O2, after the stirring and dissolving that adds water, continuously stirred lower dipping at least 12h, then it is evaporated cooling, then
Roasting at least 4h at 300 ~ 350 DEG C, naturally cools to room temperature and obtains V2O5/CeO2Nano composite material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842237.3A CN106315818B (en) | 2016-09-23 | 2016-09-23 | V2O5/CeO2Application of the nanocomposite in degradation waste water containing cefalexin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842237.3A CN106315818B (en) | 2016-09-23 | 2016-09-23 | V2O5/CeO2Application of the nanocomposite in degradation waste water containing cefalexin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026181A (en) * | 2019-05-13 | 2019-07-19 | 辽宁大学 | A kind of novel Z-type photochemical catalyst CeO2/CeVO4/V2O5And its preparation method and application |
Citations (6)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110026181A (en) * | 2019-05-13 | 2019-07-19 | 辽宁大学 | A kind of novel Z-type photochemical catalyst CeO2/CeVO4/V2O5And its preparation method and application |
| CN110026181B (en) * | 2019-05-13 | 2022-04-05 | 辽宁大学 | Novel Z-shaped photocatalyst CeO2/CeVO4/V2O5And preparation method and application thereof |
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