CN108423743A - A kind of method of tetracycline in photoresponse growth-promoting oxyradical degrading waste water - Google Patents

A kind of method of tetracycline in photoresponse growth-promoting oxyradical degrading waste water Download PDF

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Publication number
CN108423743A
CN108423743A CN201810103963.2A CN201810103963A CN108423743A CN 108423743 A CN108423743 A CN 108423743A CN 201810103963 A CN201810103963 A CN 201810103963A CN 108423743 A CN108423743 A CN 108423743A
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China
Prior art keywords
tetracycline
photoresponse
promoting
growth
oxyradical
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CN201810103963.2A
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Chinese (zh)
Inventor
高品
薛罡
钱雅洁
金雅雯
刘保江
刘振鸿
李响
陈红
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Donghua University
National Dong Hwa University
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Donghua University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/74Treatment of water, waste water, or sewage by oxidation with air
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/34Organic compounds containing oxygen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/10Photocatalysts

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  • 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)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing Of Solid Wastes (AREA)
  • Catalysts (AREA)

Abstract

The present invention provides a kind of methods of tetracycline in photoresponse growth-promoting oxyradical degrading waste water, and biomass material is rinsed using deionized water, is air-dried, is ground into biological particles;Biological particles are put into stainless steel cauldron, deionized water and transition-metal catalyst, sealing is added, magnetic agitation heats, reaction;After reaction, cooling, cleaning, vacuum filter, it is burnt to be made biomass active;It takes biomass active coke to be dispersed in tetracycline, reducing agent is then added, adjust pH value to 3.5 5.5, be put into illumination reaction device and irradiate, magnetic agitation;It is separated by solid-liquid separation after reaction, measures tetracycline degradation rate.Present invention process process is simple, and secondary pollution is small, and low energy consumption, utilize the persistent free radicals on photoresponse method activation growth-promoting activated coke surface, achieve the purpose that fast degradation tetracycline antibiotic, cost advantage is notable, has broad application prospects and significant economic and environmental benefit.

Description

A kind of method of tetracycline in photoresponse growth-promoting oxyradical degrading waste water
Technical field
The invention belongs to antibiotic waste water pollutant abatement technology field, more particularly to a kind of photoresponse growth-promoting oxyradical The method of tetracycline in degrading waste water.
Background technology
Tetracycline is a kind of broad-spectrum antibiotic, is found in streptomycete first, and there are one hydrogenations for tool on molecular structure Parallel this parent nucleus of tetraphenyl, can inhibit the biosynthesis of bacterial body protein, therefore be widely used in bacterial infective diseases Treatment.In addition, tetracycline is also act as feed addictive to promote the growth of livestock.According to statistics, China's tetracycline in 2013 Usage amount up to 1450 tons, be also higher by 390 tons than Britain's current year all antibiotic usage total amounts.
In general, tetracycline molecule stable structure, into human body and animal body in after metabolism, mainly with precursor structure shape Formula is discharged and enters sewage.And existing sewage treatment process also can only partly remove it, cause still to have a certain number of Tetracycline is discharged into natural environment.Currently, resistance problem has become global environment ecological safety and health field Public's focus, and antibiotic be generally considered to resistance have directly induction selection index system.Therefore, how It is the critical issue for alleviating resistance and developing and disseminating to efficiently remove the antibiotic in water body.
It is existing main including biological method and non-biological methods for tetracycline degradation removal.Wherein, biological method has There is the deficiency that reaction rate is slow, and to realize the degradation to tetracycline, bacterial micro-organism is needed first to it with repellence, from And can face drug resistance gene disseminates risk.Non-biological methods are mainly at present advanced oxidation processes, including Fenton oxidation method, smelly Oxygen oxidizing process, wet oxidation process etc., but all have the problems such as of high cost, safety is low, secondary pollution is big.Therefore, it studies and opens Hair is to tetracycline antibiotic good degrading effect, the new technology and method for the features such as process is simple, of low cost, and secondary pollution is small It is of great significance and application value.
Invention content
The technical problem to be solved by the present invention is in how simple, efficient, low cost and secondary pollution small ground degrading waste water Tetracycline antibiotic.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of photoresponse growth-promoting oxyradical drops The method for solving tetracycline in waste water, which is characterized in that step is:
Step 1:Biomass material is rinsed using deionized water, is air-dried, is ground into biological particles;By biomass Particle is put into stainless steel cauldron, and deionized water and transition-metal catalyst, sealing is added, and magnetic agitation heats, reaction; After reaction, cooling, cleaning, vacuum filter, it is burnt to be made biomass active;
Step 2:It takes biomass active coke prepared by step 1 to be dispersed in tetracycline, reducing agent is then added, adjust PH value is put into illumination reaction device and irradiates to 3.5-5.5, magnetic agitation;It is separated by solid-liquid separation after reaction, measures tetracycline degradation Rate.
Preferably, in the step 1, biomass material is sawdust, coconut husk or agricultural crop straw;Biological particles are a diameter of 3-5mm;Stainless steel cauldron volume is 100mL.
Preferably, in the step 1, the mass ratio of biomass material and deionized water is 0.05-0.20, biomass material Mass ratio with transition-metal catalyst is 5.0-20.0.
Preferably, in the step 1, transition-metal catalyst is iron chloride, zinc chloride or nickel chloride.
Preferably, in the step 1, magnetic agitation speed 600-800r/min;It is heated to 200-300 DEG C of reaction 2- 6h。
Preferably, in the step 1, cleaning includes three steps:Hydrochloric acid flushing, ethyl alcohol or acetone soak, deionized water It rinses, wherein concentration of hydrochloric acid 0.1-0.5mol/L, ethyl alcohol or acetone volume fraction are 50%-85%.
Preferably, in the step 2, the mass concentration of tetracycline is 10-1000 μ g/L.
Preferably, in the step 2, reducing agent is ferrous sulfate, frerrous chloride or Zero-valent Iron, reductant concentration 0.3- 6.0mg/L。
Preferably, it in the step 2, is put into illumination reaction device and irradiates 12-48h, illumination reaction device radiation intensity is 5.0-20mW/cm2
Preferably, in the step 2, magnetic stirring speed 150-350r/min.
Compared with prior art, the present invention has the advantages that:
(1) the method for the present invention high treating effect, technical process is simple, of low cost, and secondary pollution is small, overcomes existing biography Advanced oxidation processes equipment requirement of uniting is high, and processing cost is high, and the low defect of safety can be engineered applied to antibiotic waste water In processing.
(2) present invention utilizes special physico-chemical property and solvation effect of the distilled water under subcritical state, realizes to life The carbonization of raw material of substance and aromatization process, can not only loss-rate conventional pyrolytic process it is low, and its photoresponse growth-promoting oxyradical Ability is far above pyrolysis charcoal.
(3) present invention is anti-using the persistent free radicals oxidative degradation on photoresponse method growth-promoting biomass active coke surface Raw element, has not only expanded biomass recycling use field, but also provide a kind of novel place for capableing of efficient degradation antibiotic Reason method has broad application prospects and significant economic and environmental benefit.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.
Embodiment 1
Sawdust is rinsed using deionized water, is air-dried, the particle of 3mm is ground into, it is 100mL to take 10g to be put into volume Stainless steel cauldron in, 50mL deionized waters and 1g nickel chlorides, sealing is added, control magnetic agitation speed is 800r/min, 300 DEG C of reaction 6h are then heated to, after reaction, by reaction kettle cooled to room temperature, the solid-liquid for pouring out reaction gained is mixed Object is closed in beaker, is rinsed using a concentration of 0.1mol/L hydrochloric acid of 50mL, then the ethyl alcohol for being 85% with 50mL volume fractions impregnates, Then it is rinsed using 100mL deionizations, vacuum filter, it is burnt that 5.8g biomass actives is obtained after finally weighing.
The biomass active coke for weighing the above-mentioned gained of 50mg is dispersed in the tetracycline of a concentration of 1000 μ g/L, then 6.0mg/L ferrous sulfate is added, adjusts pH value to 3.5, is put into illumination reaction device and irradiates 48h, control magnetic agitation speed is 350r/min, radiation intensity 20mW/cm2.After measured, tetracycline degradation removal rate is 89.1%.
Embodiment 2
Rice straw is rinsed using deionized water, is air-dried, the particle for growing into 5mm is crushed, 10g is taken to be put into volume For 50mL deionized waters and 0.5g iron chloride, sealing in the stainless steel cauldron of 100mL, is added, control magnetic agitation speed is 600r/min is then heated to 200 DEG C of reaction 2h, after reaction, by reaction kettle cooled to room temperature, pours out reaction gained Solidliquid mixture in beaker, rinsed using a concentration of 0.1mol/L hydrochloric acid of 50mL, then with 50mL volume fractions be 50% Then acetone soak is rinsed, vacuum filter using 100mL deionizations, it is burnt that 6.6g biomass actives are obtained after finally weighing.
The biomass active coke for weighing the above-mentioned gained of 50mg is dispersed in the tetracycline of a concentration of 10 μ g/L, is then added Enter 3.0mg/L ferrous sulfate, adjust pH value to 4.5, be put into illumination reaction device and irradiate 12h, control magnetic agitation speed is 150r/min, radiation intensity 5.0mW/cm2.After measured, tetracycline degradation removal rate is 78.7%.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation, It should be pointed out that for those skilled in the art, under the premise of not departing from the method for the present invention, can also make Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art, Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more Dynamic, modification and the equivalent variations developed, are the equivalent embodiment of the present invention;Meanwhile all substantial technologicals pair according to the present invention The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical scheme of the present invention It is interior.

Claims (10)

1. a kind of method of tetracycline in photoresponse growth-promoting oxyradical degrading waste water, which is characterized in that step is:
Step 1:Biomass material is rinsed using deionized water, is air-dried, is ground into biological particles;By biological particles It is put into stainless steel cauldron, deionized water and transition-metal catalyst, sealing is added, magnetic agitation heats, reaction;Reaction After, it is burnt that biomass active is made in cooling, cleaning, vacuum filter;
Step 2:It takes biomass active coke prepared by step 1 to be dispersed in tetracycline, reducing agent is then added, adjust pH value To 3.5-5.5, it is put into illumination reaction device and irradiates, magnetic agitation;It is separated by solid-liquid separation after reaction, measures tetracycline degradation rate.
2. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:In the step 1, biomass material is sawdust, coconut husk or agricultural crop straw;The a diameter of 3-5mm of biological particles;It is stainless Steel reaction kettle volume is 100mL.
3. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:In the step 1, the mass ratio of biomass material and deionized water is 0.05-0.20, biomass material and transition metal The mass ratio of catalyst is 5.0-20.0.
4. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:In the step 1, transition-metal catalyst is iron chloride, zinc chloride or nickel chloride.
5. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:In the step 1, magnetic agitation speed 600-800r/min;It is heated to 200-300 DEG C of reaction 2-6h.
6. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:In the step 1, cleaning includes three steps:Hydrochloric acid rinses, ethyl alcohol or acetone soak, deionized water rinse, wherein Concentration of hydrochloric acid is 0.1-0.5mol/L, and ethyl alcohol or acetone volume fraction are 50%-85%.
7. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:In the step 2, the mass concentration of tetracycline is 10-1000 μ g/L.
8. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:In the step 2, reducing agent is ferrous sulfate, frerrous chloride or Zero-valent Iron, reductant concentration 0.3-6.0mg/L.
9. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:It in the step 2, is put into illumination reaction device and irradiates 12-48h, illumination reaction device radiation intensity is 5.0-20mW/cm2
10. the method for tetracycline, feature in a kind of photoresponse growth-promoting oxyradical degrading waste water as described in claim 1 It is:In the step 2, magnetic stirring speed 150-350r/min.
CN201810103963.2A 2018-02-01 2018-02-01 A kind of method of tetracycline in photoresponse growth-promoting oxyradical degrading waste water Pending CN108423743A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110282691A (en) * 2019-07-16 2019-09-27 东华大学 A method of based on I2 doping sludge base activated coke photocatalytic degradation of dye waste water

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CN106964351A (en) * 2017-03-20 2017-07-21 湖南大学 A kind of Fe doping charcoal load TiO2The preparation method and purposes of composite

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110282691A (en) * 2019-07-16 2019-09-27 东华大学 A method of based on I2 doping sludge base activated coke photocatalytic degradation of dye waste water
CN110282691B (en) * 2019-07-16 2021-10-26 东华大学 Method for photocatalytic degradation of dye wastewater based on iodine-doped sludge-based activated coke

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Application publication date: 20180821