CN102531088A - Method for treating aureomycin waste water with aluminum-modified attapulgite adsorbent - Google Patents
Method for treating aureomycin waste water with aluminum-modified attapulgite adsorbent Download PDFInfo
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- CN102531088A CN102531088A CN201010582496XA CN201010582496A CN102531088A CN 102531088 A CN102531088 A CN 102531088A CN 201010582496X A CN201010582496X A CN 201010582496XA CN 201010582496 A CN201010582496 A CN 201010582496A CN 102531088 A CN102531088 A CN 102531088A
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- duomycin
- waste water
- modified attapulgite
- aluminium modified
- aureomycin
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Abstract
The invention relates to a method for treating aureomycin waste water with an aluminum-modified attapulgite adsorbent, which is characterized in that concentration of aureomycin in the waste water is 5-150mg/L. The aluminum-modified attapulgite adsorbent is added in the aureomycin waste water, and mass ratio of the aureomycin waste water to the adsorbent is 1: (4-6). The adsorption process adopts a static mode of action and/or an oscillating and stirring mode of action at the temperature of 0-50 DEG C. The method aims at the waste water polluted by aureomycin and removes aureomycin by adding the aluminum-modified attapulgite adsorbent in the waste water for adsorption. The method has the advantages of having high adsorption efficiency for aureomycin compounds, simple operational process, low requirements for adsorption conditions, low cost of adsorption materials and high regeneration efficiency and being easy to popularize. The method is used for removing aureomycin compounds in a water body and has good economic and environmental benefits.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment of TCs, particularly relate to a kind of method with duomycin in the aluminium modified attapulgite sorbent treatment pharmaceutical wastewater.
Background technology
TCs (tetracycline antibiotics, TCs is hereinafter to be referred as tetracyclines) is the one type of Broad spectrum antibiotics that is produced by streptomycete, and frequency of utilization is high, scope is wide.It is reported, this type of production of antibiotics and usage quantity world rankings the second, China ranks the first.Tetracyclines comprises natural tetracyclines and semi-synthetic tetracyclines, and natural tetracyclines is from the Streptomyces nutrient solution, to extract, and duomycin (Aureomycin is called Uromycin again) is a kind of of natural tetracyclines.
China since early 1990s, duomycin widespread use in industries such as medicine, livestock industry and aquaculture, its output and consumption are in rising trend always.But its production and use and great amount of wastewater of producing in above-mentioned industry is unprocessed or handle and thoroughly do not make duomycin get into ecotope with water; Therefore; The content of duomycin in water surrounding grows with each passing day, and the negative effect of human and ecotope is also highlighted day by day.
For the ecosystem, abuse duomycin can directly cause individual resistance.Increasing data shows simultaneously, and more natural bacteriums are more much higher than what expect to the resistance of duomycin, and promptly the drug-resistance of bacteria gene possibly transfer take place at occurring in nature.The resistance of duomycin possibly pass to malignant bacteria from non-pathogenic bacteria, even may further propagate, and develops into the resistance on the ecological level, and makes the individuality that does not directly touch duomycin also produce resistance.
The residual composition and the activity that can influence microorganisms in water of duomycin in the water surrounding, thus the microbial ecological structure changed, influence nitrated, the mineralization of soil and the nutrient of soil and circulate or the like.In addition, the residual meeting of duomycin impacts plant, hydrobiont and soil organisms, because of difference generation inhibition growth or the variation and the teratogenesis harm etc. of residual concentration.Because the duomycin compound can pass the lipophilic group of cytolemma, and has advantages of higher stability, therefore, be easy to biological accumulation and at the medium-term and long-term stable existence of environment etc., thus the toxicity and the hazardness of aggravating it.
For reducing the ecological risk of duomycin compound in the water surrounding, need to remove the duomycin compound in sewage or the high density surface water body.Conventional at present water treatment method has: the combined method of physics, chemistry and biological process and aforesaid method; But because the duomycin compound structure is complicated; Its toxicity and resistance concentration can influence the effect of biochemical treatment, and the conventional water treatment process of Sewage Plant is difficult to its removal.Compare with complicated technologies such as various advanced oxidations, catalyzed oxidations, absorbing process has advantages such as technology is simple, treatment effect stable, relative low price.
Sorbing material commonly used has gac, active sludge, clay class etc.; Gac is a kind of high-performance sorbing material, and patent publication No. CN101333011 has introduced a kind of method of utilizing the absorption of mesopore charcoal to remove tsiklomitsin in the water, and patent publication No. CN101337706 utilizes Powdered Activated Carbon to handle the method for water body containing tetracycline antibiotics; Two kinds of methods all have higher eliminating rate of absorption to tetracycline compound; Proved absolutely the high absorption property of gac, but both are not aimed at all that the duomycin compound studies, and this sorbing material preparation cost is higher; The economic situation present according to China can not be widely used.Active sludge is sewage work's treatment process commonly used; But activated sludge process can not thoroughly be removed the duomycin compound; Along with the increase of underwater gold mycin concentration, eliminating rate of absorption reduces and treating processes will produce and have drug-fast mikrobe in a large number, will form potentially dangerous after entering environment.Therefore; It is very necessary developing a kind of novel, cheap clay class sorbing material; The absorption of relevant duomycin research at present both at home and abroad is fewer, have report to adopt natural soil sorbing material such as moisture soil, yellowish soil, rice soil, red soil etc. to adsorb research, but the natural soil sorbing material exists loading capacity low; Adsorption concentration is limited in scope, the unsuitable duomycin compound of removing in the high density water body.
Attapulgite is a kind of natural clay mineral, and (internal surface area can be up to 300-400m owing to have bar-shaped, fibrous crystals form and the bigger specific surface area of unique layer chain crystalline structure and very tiny (about 0.01 μ m * 1 μ m)
2/ g, and outer surface area depends on the size of attapulgite crystal grain, according to actual measurement, Soviet Union's Anhui attapulgite outer surface area is about 23m
2/ g), determined it to have the good adsorption performance.According to existing bibliographical information attapulgite is heavy metal and organic strong sorbing material; And processing costs is merely the 5-10% of gac, and regenerative operation is simple, and regeneration rate is high; Belong to the non-metal kind clay mineral of a kind of efficient, economy, environmental protection class, have broad prospect of application.Present document has been reported the removal of attapulgite to COD of sewage, and clearance can be up to more than 90%, have in addition reach 100%, and regeneration rate is high, reusable, does not appear in the newspapers but the absorption that attapulgite is applied to the duomycin compound removed.
Summary of the invention
The method that the purpose of this invention is to provide duomycin in a kind of economy, the waste water of aluminium modified attapulgite sorbent material suction efficiently.
The method of aluminium modified attapulgite sorbent treatment duomycin waste water of the present invention is characterized in that:
The concentration of described duomycin in waste water is 5-150mg/L;
Add aluminium modified attapulgite sorbent material at described duomycin waste water, the mass ratio of described duomycin waste water and described sorbent material is 1: (4-6);
Described adsorption process in temperature is under 0-50 ℃ the condition, adopt static state and/or vibration, the stirring action mode is carried out.
In practical implementation,
The mass ratio of described duomycin waste water and described sorbent material can be preferred 1: 5.
The pH value scope of described duomycin waste water is 3-10.
Described adsorption time is 3-24h.
The method of described aluminium modified attapulgite sorbent treatment duomycin waste water also comprises the regeneration of sorbent material;
The regeneration of described sorbent material be with the saturated sorbent material of absorption mix with NaOH, immersion, clear water wash and get final product, wherein
Described NaOH concentration is 5%-15%;
Described soak time is 2-3h.
Described aluminium modified attapulgite preparation of adsorbent process is:
(1) attapulgite is purified
A. former attapulgite pulverizing, grinding are obtained particle diameter≤100 purpose powder;
B. in concave and convex rod stone powder, add water, be made into the suspension-s that weight concentration is 5-10%, stir, concave and convex rod stone powder is uniformly dispersed;
C. add Sodium hexametaphosphate 99 in the suspension-s after dispersion treatment, the mass ratio of itself and attapulgite is (1-5): 100, stir 0.5h, and ultrasonic 1h leaves standstill 2h, dewaters to the mud cake shape, and 105 ℃ of dry 3h obtain Concavo-convex stick after purifying stone;
(2) Concavo-convex and excellent after purifying stone modification
A. with adding 150-200mL water in the 5g Concavo-convex stick after purifying stone, stir, the Concavo-convex stick after purifying stone powder is uniformly dispersed;
B. the AlCl that adds 0.3-5.05g
36H
2O;
C. add the HCl of an amount of 1mol/L or the NaOH of 1mol/L the pH value is adjusted to neutrality;
D. magnetic agitation 2-3h, centrifuge washing 2-3 time, 40 ℃ of oven dry 36-48h grind and obtain particle diameter≤100 purpose aluminium modified attapulgite sorbent materials.
Described absorption receives the molecular structure feature limits of duomycin own, and duomycin all is prone to rd-takes place under acid, alkali condition, can know that pH value value has material impact to absorption, and the preferred pH value of experiment proof duomycin solution scope is 3-10.It is little that absorption is influenced by temperature, hunting speed, can adjust according to practical situation, and adsorbing the preferred time is 3-24h, and adsorption effect increases along with the growth of time, reaches adsorption equilibrium fully behind the absorption 24h, and eliminating rate of absorption reaches more than 97% after the balance.
Said adsorbent reactivation, NaOH concentration are 5%-15%, and preferred NaOH concentration is 15%, soaks 2-3h, can continue on for duomycin in the planar water after the clear water washing, and eliminating rate of absorption is 63.5%.
The present invention is directed to the waste water that polluted by duomycin, adsorb removal, beneficial effect of the present invention through in waste water, adding aluminium modified attapulgite sorbent material:
1. the adsorption efficiency to the duomycin compound is high,
2. operating process is simple,
3. the adsorption conditions requirement is low,
4. sorbing material is with low cost, regeneration efficiency is high, be easy to popularization.
Therefore, the present invention is applied to remove that duomycin has good economy and environmental benefit in the water body.
Description of drawings
Fig. 1 time is to the influence of eliminating rate of absorption
Fig. 2 duomycin starting point concentration is to the influence of eliminating rate of absorption
Fig. 3 temperature is to the influence of eliminating rate of absorption
Fig. 4 oscillation rate is to the influence of eliminating rate of absorption
Fig. 5 pH value of solution value is to the influence of eliminating rate of absorption
Fig. 6 different aluminum amount modified attapulgite sorbent material is to the influence of eliminating rate of absorption
Embodiment
Below in conjunction with specific examples invention is described in detail.Scope of the present invention is not exceeded with embodiment, but is limited the scope of claim.
Embodiment
Embodiment 1
Take by weighing 5g Concavo-convex stick after purifying stone and place the 500mL beaker, add 250mL zero(ppm) water, behind the magnetic agitation 0.5h, add the AlCl of 0.894g
36H
2O (being equivalent to 0.10gAl), magnetic agitation 30min guarantees AlCl
36H
2O dissolves fully, regulates pH value=7, continues stirring 1h, in 40 ℃ of dry 36-48h, is ground to particle diameter≤100 orders behind the centrifuge washing 3 times, makes aluminium modified attapulgite sorbent material.
Accurately weighing through aluminium modified attapulgite sorbent material 0.1000g (± 0.0005g), place 250mL tool plug Erlenmeyer flask, adding 20mL concentration is in the duomycin solution of 100mg/L; Place in the constant temperature oscillator; The rate oscillation of 150r/min is got the millipore filtration that supernatant is crossed 0.45 μ m at 1h, 3h, 6h, 12h, 24h respectively under 25 ℃ of temperature, tests residual chlortetracycline concentration with liquid chromatography; Every group the experiment be provided with three parallel; The result is with the arithmetical mean value representation, and the base of calculation deviation, guarantees measuring accuracy.Through calculating, the duomycin eliminating rate of absorption is respectively 72.6%, 86.5%, 94.3%, 95.9%, 97.1%.See accompanying drawing 1, the time is to the influence of eliminating rate of absorption.
It is thus clear that, be adsorbed on the 3h clearance near 90%, growth in time, clearance increases gradually, and clearance reaches more than 97% after the adsorption equilibrium.Adsorbing the preferred time is 3-24h.
Embodiment 2
Make aluminium modified attapulgite sorbent material with embodiment 1.
Accurately weighing through aluminium modified attapulgite sorbent material 0.1000g (± 0.0005g), place 250mL tool plug Erlenmeyer flask, add that 20mL concentration is respectively 10,20,50, in the duomycin solution of 100mg/L; Place in the constant temperature oscillator; The rate oscillation 24h of 150r/min gets the millipore filtration that supernatant is crossed 0.45 μ m to adsorption equilibrium under 25 ℃ of temperature, tests residual chlortetracycline concentration with liquid chromatography; Every group the experiment be provided with three parallel; The result is with the arithmetical mean value representation, and the base of calculation deviation, guarantees measuring accuracy.Through calculating, the duomycin eliminating rate of absorption is respectively 99.4%, 98.8%, 98.3%, 97.1%.See accompanying drawing 2, the duomycin starting point concentration is to the influence of eliminating rate of absorption.
It is thus clear that aluminium modified attapulgite sorbent material all has very high clearance to the duomycin polluted-water of 5-150mg/L concentration.
Embodiment 3
Make aluminium modified attapulgite sorbent material with embodiment 1.
Accurately weighing through aluminium modified attapulgite sorbent material 0.1000g (± 0.0005g), place 250mL tool plug Erlenmeyer flask, adding 20mL concentration is in the duomycin solution of 100mg/L; Place in the constant temperature oscillator; The rate oscillation 24h of 150r/min gets the millipore filtration that supernatant is crossed 0.45 μ m to adsorption equilibrium under 5,15,25,40 ℃ of temperature respectively, tests residual chlortetracycline concentration with liquid chromatography; Every group the experiment be provided with three parallel; The result is with the arithmetical mean value representation, and the base of calculation deviation, guarantees measuring accuracy.Through calculating, the duomycin eliminating rate of absorption is respectively 95.5%, 96.6%, 97.1%, 98.3%.See accompanying drawing 3, temperature is to the influence of eliminating rate of absorption.
It is thus clear that aluminium modified attapulgite adsorbents adsorb duomycin is temperature influence not, be applicable to the removal that the 0-50 ℃ of water body duomycin under the temperature condition pollutes.
Embodiment 4
Make aluminium modified attapulgite sorbent material with embodiment 1.
Accurately weighing through aluminium modified attapulgite sorbent material 0.1000g (± 0.0005g), place 250mL tool plug Erlenmeyer flask, adding 20mL concentration is in the duomycin solution of 100mg/L; Place in the constant temperature oscillator, under 25 ℃ of temperature, respectively with 0,50,100,150, the rate oscillation 24h of 200r/min is to adsorption equilibrium; Get supernatant and cross the millipore filtration of 0.45 μ m; Test residual chlortetracycline concentration with liquid chromatography, every group the experiment be provided with three parallel, the result is with the arithmetical mean value representation; And the base of calculation deviation, guarantee measuring accuracy.Through calculating, the duomycin eliminating rate of absorption is respectively 96.0%, 97.9%, 98.2%, 97.1%, 98.3%.See accompanying drawing 4, oscillation rate is to the influence of eliminating rate of absorption.
It is thus clear that the request for utilization of aluminium modified attapulgite adsorbents adsorb duomycin compound is low, can directly add use.
Embodiment 5
Make aluminium modified attapulgite sorbent material with embodiment 1.
Accurately weighing through aluminium modified attapulgite sorbent material 0.1000g (± 0.0005g), place 250mL tool plug Erlenmeyer flask, adding 20mL concentration is in the duomycin solution of 100mg/L; Regulator solution pH value is respectively 1,3,5,7,9 and places in the constant temperature oscillator; The rate oscillation 24h of 150r/min gets the millipore filtration that supernatant is crossed 0.45 μ m to adsorption equilibrium under 25 ℃ of temperature, tests residual chlortetracycline concentration with liquid chromatography; Every group the experiment be provided with three parallel; The result is with the arithmetical mean value representation, and the base of calculation deviation, guarantees measuring accuracy.Through calculating, the duomycin eliminating rate of absorption is respectively 55.1%, 97.1%, 98.8%, 98.7%, 97.8%.See accompanying drawing 5, the pH value of solution value is to the influence of eliminating rate of absorption.
It is thus clear that the pH value of solution value is bigger to Adsorption Effect, preferred solution pH value scope is 3-10.
Embodiment 6
Take by weighing 5g Concavo-convex stick after purifying stone clay and place the 500mL beaker, add 250mL zero(ppm) water, behind the magnetic agitation 0.5h, add the AlCl of 0.447g, 0.894g, 1.341g, 2.236g, 4.471g respectively
36H
2O (being equivalent to 0.05g, 0.10g, 0.15g, 0.25g, 0.50gAl respectively), magnetic agitation 30min guarantees AlCl
36H
2O dissolves fully, regulates pH value=7, continues stirring 1h, in 40 ℃ of dry 36-48h, is ground to particle diameter≤100 orders behind the centrifuge washing 3 times, makes the aluminium modified attapulgite sorbent material of different aluminum amount.
Respectively accurate weighing through aluminium modified attapulgite sorbent material 0.1000g (± 0.0005g), place 250mL tool plug Erlenmeyer flask, adding 20mL concentration is in the duomycin solution of 100mg/L; Place in the constant temperature oscillator, under 25 ℃ of temperature, with the rate oscillation 24h of 150r/min to adsorption equilibrium; Get supernatant and cross the millipore filtration of 0.45 μ m; Test residual chlortetracycline concentration with liquid chromatography, every group the experiment be provided with three parallel, the result is with the arithmetical mean value representation; And the base of calculation deviation, guarantee measuring accuracy.Through calculating, the duomycin eliminating rate of absorption is respectively 96.7%, 97.1%, 97.2%, 91.6%, 82.2%.See accompanying drawing 6, the modification of different aluminum amount is to the influence of eliminating rate of absorption.
Claims (7)
1. the method for an aluminium modified attapulgite sorbent treatment duomycin waste water is characterized in that:
The concentration of described duomycin in waste water is 5-150mg/L;
Add aluminium modified attapulgite sorbent material at described duomycin waste water, the mass ratio of described duomycin waste water and described sorbent material is 1: (4-6);
Described adsorption process in temperature is under 0-50 ℃ the condition, adopt static state and/or vibration, the stirring action mode is carried out.
2. the method for aluminium modified attapulgite sorbent treatment duomycin waste water as claimed in claim 1 is characterized in that:
The mass ratio of described duomycin waste water and described sorbent material is 1: 5.
3. the method for aluminium modified attapulgite sorbent treatment duomycin waste water as claimed in claim 2 is characterized in that:
The pH value scope of described duomycin waste water is 3-10.
4. the method for aluminium modified attapulgite sorbent treatment duomycin waste water as claimed in claim 3 is characterized in that:
Described adsorption time is 3-24h.
5. the method for aluminium modified attapulgite sorbent treatment duomycin waste water as claimed in claim 1 is characterized in that:
The method of described aluminium modified attapulgite sorbent treatment duomycin waste water also comprises the regeneration of sorbent material;
The regeneration of described sorbent material be with the saturated sorbent material of absorption mix with NaOH, immersion, clear water wash and get final product, wherein
Described NaOH concentration is 5%-15%;
Described soak time is 2-3h.
6. the method for aluminium modified attapulgite sorbent treatment duomycin waste water as claimed in claim 5 is characterized in that:
Described NaOH concentration is 15%.
7. like the method for the aluminium modified attapulgite sorbent treatment duomycin waste water of one of claim 1～6, it is characterized in that described aluminium modified attapulgite preparation of adsorbent process is:
(1) attapulgite is purified
A. the powder that obtains particle diameter≤100 is pulverized, ground to former attapulgite;
B. in concave and convex rod stone powder, add water, be made into the suspension-s that weight concentration is 5-10%, stir, concave and convex rod stone powder is uniformly dispersed;
C. add Sodium hexametaphosphate 99 in the suspension-s after dispersion treatment, the mass ratio of itself and attapulgite is (1-5): 100, stir 0.5h, and ultrasonic 1h leaves standstill 2h, dewaters to the mud cake shape, and 105 ℃ of dry 3h obtain Concavo-convex stick after purifying stone;
(2) Concavo-convex and excellent after purifying stone modification
A. with adding 150-200mL water in the 5g Concavo-convex stick after purifying stone, stir, the Concavo-convex stick after purifying stone powder is uniformly dispersed;
B. the AlCl that adds 0.3-5.0g
36H
2O;
C. add the HCl of an amount of 1mol/L or the NaOH of 1mol/L the pH value is adjusted to neutrality;
D. magnetic agitation 2-3h, centrifuge washing 2-3 time, 40 ℃ of oven dry 36-48h grind and obtain particle diameter≤100 purpose aluminium modified attapulgite sorbent materials.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789041A (en) * | 2022-05-16 | 2022-07-26 | 王之风 | Method for adsorbing aureomycin antibiotics by using modified coconut shell carbon |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249417A (en) * | 2008-03-28 | 2008-08-27 | 合肥工业大学 | Concave-convex bar stone clay-trihydrate alumina/iron nano composite adsorbing agent, preparation and applications |
-
2010
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249417A (en) * | 2008-03-28 | 2008-08-27 | 合肥工业大学 | Concave-convex bar stone clay-trihydrate alumina/iron nano composite adsorbing agent, preparation and applications |
Non-Patent Citations (3)
| Title |
|---|
| PO-HSIANG CHANG ET AL.: "Sorptive removal of tetracycline from water by palygorskite", 《JOURNAL OF HAZARDOUS MATERIALS》 * |
| 刘艾芹等: "高纯超微细凹凸棒土的制备及应用研究", 《无机盐工业》 * |
| 牟淑杰: "改性凹凸棒土的制备及其对印染废水的处理效果", 《中国非金属矿工业导刊》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789041A (en) * | 2022-05-16 | 2022-07-26 | 王之风 | Method for adsorbing aureomycin antibiotics by using modified coconut shell carbon |
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Application publication date: 20120704 |