CN106076253A - A kind of hydrotalcite-modified biological material removing quadracycline in water body and the preparation and application of thermal decomposition product thereof - Google Patents
A kind of hydrotalcite-modified biological material removing quadracycline in water body and the preparation and application of thermal decomposition product thereof Download PDFInfo
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- CN106076253A CN106076253A CN201610466021.1A CN201610466021A CN106076253A CN 106076253 A CN106076253 A CN 106076253A CN 201610466021 A CN201610466021 A CN 201610466021A CN 106076253 A CN106076253 A CN 106076253A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a kind of hydrotalcite-modified biological material removing quadracycline in water body and the preparation and application of thermal decomposition product thereof, the primary raw material of biomass is agricultural wastes and solid waste etc., and the raw material sources of these biomass are extensive, and cheap.Concretely comprising the following steps of preparation: the biomass suspension containing divalent metal salt and trivalent metal salt fully reacts with alkali liquor, after being cleaned by aging, filtration and ultra-pure water, is dried and obtains hydrotalcite-modified biological material.Finally by tube-type atmosphere furnace at N2Under atmosphere, the pyrolysis of hydrotalcite-modified biological material is obtained its thermal decomposition product.Hydrotalcite-modified biological material and thermal decomposition product thereof that the inventive method prepares all have higher removal ability to the quadracycline in water body.The preparation of hydrotalcite-modified biological material is the most cheap, is the adsorbent of a kind of Cheap highly effective.The pyrolysis of hydrotalcite-modified biological material significantly improves its absorbability, has higher application potential.
Description
Technical field
Present invention relates particularly to a kind of hydrotalcite-modified biological material removing quadracycline in water body and pyrolysis thereof
The preparation and application of product, belong to environment functional material and water processes new technical field.
Background technology
Antibiotic is the medicine for treating various Non-viral infections, and is widely used.Countless having saved
The most inevasible problem bringing the pollution of antibiotics water while life.As the maximum antibiotic of currently used amount it
One, tetracycline is widely used to all trades and professions such as medical treatment, cultivation and food processing.The same with other antibiotic, tetracycline
Can not be digested by human body and animal organisms metabolism completely, the tetracycline of about 90% picked-up can be discharged by urine.By respectively
The approach of kind is pooled to the tetracycline in soil and water body can produce serious infringement to Eco-Environment System.Therefore, one is explored
Plant the most necessary for processing the technology containing antibiotic waste water of economical and efficient.General antibiotic waste water processing method has suction
Attached, oxidation, photocatalysis and biodegradation etc..Wherein, absorption can effectively suppress toxicity and limit pollution thing in water environment
Transfer is it is considered to be a kind of proper processing method.But, develop the adsorbing material with economical and efficient, be current
A adsorption technology key matter of science and technology in the development and application of water process.
The biological material such as agricultural wastes and solid waste has been widely used as low-cost sorbent going for water pollution
Remove.The abundant raw materials of these biomass, price is relatively low, and pollutant various in water body are had certain disposal ability.So
And, limited absorbability limits its application in actual waste water processes.By suitable method, brucite is assembled in
The surface of biomass, brucite modified biological matter makes composite, it is possible to its surface adsorption site abundant, improves biomass pair
The removal ability of tetracycline pollutant., hydrotalcite-modified biological material is pyrolyzed meanwhile, can carry biomass carbonated
The stability of high material and absorbability.
Summary of the invention
The technical problem to be solved is: for the with serious pollution water body of current antibiotic medicine, exploitation one
At a low price, can be used for hydrotalcite-modified biological material and the thermal decomposition product thereof of adsorption treatment Tetracyclines pollutant efficiently.
A kind of hydrotalcite-modified biological material of present invention proposition and the preparation method of thermal decomposition product thereof, be by brucite
It is assembled in biological surface, and hydrotalcite-modified biological material is pyrolyzed, the steady of material can be improved by biomass carbonated
Qualitative and absorbability.Then by prepared materials application in removing quadracycline in water body.Specifically comprise the following steps that
(1) preparation of hydrotalcite-modified biological material
Biomass raw material after clean drying is pulverized, and the sieve of 0.3mm excessively obtains powdered biomass.Taking mol ratio is 3:
The divalent metal salt of 1 and trivalent metal salt join in appropriate amount of deionized water so that divalent metal salt and trivalent metal in solution
The concentration of salt is respectively 0.06mol/L and 0.02mol/L.Again appropriate powdered biomass is joined in this solution, biomass
Amount (kg) is 2:3:1 with the ratio of divalent metal salt and the mole of trivalent metal salt.Mix the speed that suspension is with 150 revs/min
Spend (25 DEG C) vibration in water bath with thermostatic control vibration case and obtain biomass suspension in 24 hours.Separately take the Na of 0.25mol/L2CO3Solution and
The NaOH solution mixed in equal amounts of 0.80mol/L obtains alkali liquor.Biomass suspension and alkali liquor are added dropwise in reaction vessel, instead
Answer container to be placed in thermostat water bath holding reaction temperature 60 DEG C, course of reaction is entered with motor stirrer under 300 revs/min
Row stirring, and make the reaction solution pH in reaction vessel be maintained at 10 left sides by adjusting the rate of addition of biomass suspension and alkali liquor
The right side, the most continuously stirred reaction 60 minutes after completion of dropwise addition.By reacted suspension at 90 DEG C aging 24 hours, then will obtain
Precipitate filter, and with ultra-pure water clean 3 times.Then material is dried 24 hours at 80 DEG C, obtain hydrotalcite-modified life
Material.
(2) it is pyrolyzed hydrotalcite-modified biological material
The hydrotalcite-modified biological material that (1) prepares is put into pyrolysis in tube-type atmosphere furnace fire, pyrolytic process is protected
The quartz ampoule holding atmosphere furnace seals, and simultaneously in pipe, flow velocity with 400mL/min is passed through N2, keep whole pyrolytic process with this
Anaerobic condition, the heating schedule of tube furnace is set as: heats with the heating rate of 5 DEG C/min from room temperature and rises to 475 DEG C, and
Persistently it is pyrolyzed under this temperature conditions 4 hours, then starts Temperature fall process, temperature-fall period keeps N2With identical flow velocity
It is continually fed into, after being cooled to room temperature, takes out the thermal decomposition product i.e. obtaining hydrotalcite-modified biological material.
In above-mentioned preparation method, the order of preparation is first to prepare hydrotalcite-modified biological material, then by tubular type gas
Atmosphere stove is at N2Hydrotalcite-modified biological material it is pyrolyzed under atmosphere.
In above-mentioned preparation method, the biomass such as the raw material selection agricultural wastes of biomass and solid waste.
In above-mentioned preparation method, the mol ratio of described divalent metal salt and trivalent metal salt is 3:1.
In above-mentioned preparation method, the amount (kg) of biomass with the ratio of divalent metal salt and the mole of trivalent metal salt is
2:3:1.
In above-mentioned preparation method, reaction solution pH is maintained at about 10.
In above-mentioned preparation method, the heating rate of tube furnace is 5 DEG C/min, and maximum temperature is 475 DEG C, and in this temperature strip
Persistently it is pyrolyzed under part 4 hours.
Hydrotalcite-modified biological material that the inventive method prepares and thermal decomposition product thereof is utilized to remove salt in water body
Acid tetracycline.
Compared with prior art, it is an advantage of the current invention that:
1. the primary raw material of biomass is agricultural wastes, solid waste and mud etc., the raw material sources of these biomass
Extensively, and cheap.
2. the hydrotalcite-modified biological material of the present invention and the preparation technology of thermal decomposition product thereof and simple to operate, preparation is fast
Speed, with short production cycle, product recovery rate is high, it is not necessary to special chemical industry equipment, it is easy to accomplish industrialized production.
3. product is nontoxic, environmentally friendly.
4. the hydrotalcite-modified biological material of the present invention and the thermal decomposition product removal efficiency to Tetracyclines pollutant thereof
High.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope schematic diagram of the thermal decomposition product of the hydrotalcite-modified biological material of the embodiment of the present invention 1；
Fig. 2 is the transmission electron microscope schematic diagram of the thermal decomposition product of the hydrotalcite-modified biological material of the embodiment of the present invention 1；
Fig. 3 is that the thermal decomposition product of the hydrotalcite-modified biological material of the embodiment of the present invention 4 is to quadracycline in water body
Adsorbance.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
Embodiment 1:
A kind of hydrotalcite-modified biological material of the present invention and the preparation of thermal decomposition product thereof, in case study on implementation,
Biomass raw material selection bagasse, divalent metal salt and trivalent metal salt select MgCl respectively2·6H2O and AlCl3·6H2O。
Concrete preparation method is as follows:
Being cleaned by bagasse deionized water, then dry 24 hours at 80 DEG C, the bagasse after drying is pulverized, and
Cross 0.3mm sieve and obtain bagasse powder；By appropriate AlCl3·6H2O and MgCl2·6H2O joins in the ultra-pure water of 500mL, and two
Person's concentration is respectively 0.06mol/L and 0.02mol/L, then joins in this solution by 20g bagasse powder, mixing suspension with
The speed of 150 revs/min (25 DEG C) vibration in water bath with thermostatic control vibration case obtains biomass suspension in 24 hours.Separately take 0.25mol/
The Na of L2CO3The NaOH solution mixed in equal amounts of solution and 0.80mol/L obtains alkali liquor.Biomass suspension and alkali liquor are dropwisely added
In reaction vessel, reaction vessel is placed in thermostat water bath holding reaction temperature 60 DEG C, uses motor stirrer in course of reaction
It is stirred under 300 revs/min, and makes the reaction in reaction vessel by adjusting the rate of addition of biomass suspension and alkali liquor
PH value of solution is maintained at about 10, the most continuously stirred reaction 60 minutes after completion of dropwise addition.By reacted suspension at 90 DEG C aging
24 hours, then the precipitate obtained is filtered, and clean 3 times with ultra-pure water.Then material is dried 24 hours at 80 DEG C,
Obtain hydrotalcite-modified biological material.
Prepared hydrotalcite-modified biological material is put into pyrolysis in tube-type atmosphere furnace fire, pyrolytic process keeps gas
The quartz ampoule of atmosphere stove seals, and in pipe, flow velocity with 400mL/min is passed through N simultaneously2, keep detesting of whole pyrolytic process with this
Oxygen condition, the heating schedule of tube furnace is set as: rise to 475 DEG C from room temperature with the heating rate heating of 5 DEG C/min, and at this
Persistently it is pyrolyzed under temperature conditions 4 hours, then starts Temperature fall process, temperature-fall period keeps N2Continue with identical flow velocity
It is passed through, after being cooled to room temperature, takes out the thermal decomposition product i.e. obtaining hydrotalcite-modified biological material.
The thermal decomposition product outward appearance of above-mentioned prepared hydrotalcite-modified biological material is black, and this is owing to biomass are hot
Solve carbonization.Being placed under scanning electron microscope observation, its surface texture is as shown in Figure 1, it can be seen that carbon particles surface distributed
Substantial amounts of brucite.Material is observed under transmission electron microscope, as shown in Figure 2, it can be seen that the stratified pieces Rotating fields of brucite.
Embodiment 2:
The hydrotalcite-modified biological material of the present invention processes quadracycline in water body, comprises the following steps:
Take respectively 20mol/L, 50mol/L, 100mol/L, 200mol/L, 500mol/L quadracycline solution 30mL in
In conical flask, after each conical flask adds the hydrotalcite-modified biological material of 0.02g, it is placed in water-bath constant temperature oscillator,
React under the conditions of 25 DEG C.After 180min, each conical flask takes 10mL solution respectively and is centrifuged, by 0.45 μm filter membrane after being centrifuged
Filter, take filtrate in centrifuge tube.Employing ultraviolet-visible spectrophotometer detects after reacting at three temperature at 357nm
Solution concentration.Result is as shown in table 1:
Table 1: the adsorbance data of the different quadracycline talc modified biological materials of initial concentration Water Under
As shown in Table 1, under the conditions of different quadracycline initial concentrations, hydrotalcite-modified biological material is in water body
Quadracycline all has relatively high absorption capacity.Under conditions of initial concentration is 20mg/L, this adsorbent has 15.86mg/g
Adsorbance, and with initial concentration increase and increase, under conditions of 500mg/L, the adsorbance of this adsorbent reaches
253.40mg/g。
Embodiment 3:
The thermal decomposition product of the hydrotalcite-modified biological material of the present invention processes quadracycline in water body, including following step
Rapid:
Take respectively 20mol/L, 50mol/L, 100mol/L, 200mol/L, 500mol/L quadracycline solution 30mL in
In conical flask, after each conical flask adds the thermal decomposition product of the hydrotalcite-modified biological material of 0.02g, it is placed in constant temperature water bath and shakes
Swing in device, react under the conditions of 25 DEG C.After 180min, each conical flask takes 10mL solution respectively and is centrifuged, and passes through after being centrifuged
0.45 μm membrane filtration, takes filtrate in centrifuge tube.Ultraviolet-visible spectrophotometer is used to detect at 347nm three temperature
Reacted solution concentration under degree.Result is as shown in table 2:
Table 2: the absorption of the thermal decomposition product of the different quadracycline talc modified biological materials of initial concentration Water Under
Amount data
As shown in Table 2, after the pyrolysis of hydrotalcite-modified biological material, its adsorbance significantly increases.At initial concentration it is
Under conditions of 20mg/L, this adsorbent has the adsorbance of 19.55mg/g, and increases with initial concentration and increase, to 500mg/L
Under conditions of the adsorbance of this adsorbent reach 398.87mg/g.
Embodiment 4:
The thermal decomposition product of the hydrotalcite-modified biological material of the present invention processes quadracycline in water body, including following step
Rapid:
The quadracycline of the 20mg/L that the thermal decomposition product of hydrotalcite-modified for 0.02g biological material is joined 20mL is molten
In liquid, it is placed in water-bath constant temperature oscillator, reacts under the conditions of 25 DEG C.Take 10mL solution respectively at different somes interval time to enter
Row is centrifugal, by 0.45 μm membrane filtration after being centrifuged, takes filtrate in centrifuge tube.Ultraviolet-visible spectrophotometer is used to exist
Detection reacted solution concentration at three temperature at 347nm.Adsorbance result under different time is as shown in Figure 3.
From the figure 3, it may be seen that the thermal decomposition product of hydrotalcite-modified biological material to the adsorbance of quadracycline in water body with
The increase of time to be continuously increased.Between 10min to 120min, adsorbance quickly increases, and starts to reach after 180min
To saturated.This illustrates that the thermal decomposition product of hydrotalcite-modified biological material can process the hydrochloric acid Fourth Ring in water body by quick adsorption
Element.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
With present inventive concept without the various process programs of substantial differences all in protection scope of the present invention.
Claims (9)
1. the hydrotalcite-modified biological material removing quadracycline in water body and thermal decomposition product thereof, it is characterised in that
Utilize brucite that biomass are modified, and by pyrolysis charring, improve stability and the absorbability of material.
2. a kind of hydrotalcite-modified biological material removing quadracycline in water body as claimed in claim 1 and
The preparation method of thermal decomposition product, comprises the following steps:
(1) preparation of hydrotalcite-modified biological material
Biomass raw material after clean drying is pulverized, and the sieve of 0.3mm excessively obtains powdered biomass.Taking mol ratio is 3:1's
Divalent metal salt and trivalent metal salt join in appropriate amount of deionized water so that divalent metal salt and trivalent metal salt in solution
Concentration is respectively 0.06mol/L and 0.02mol/L.Again appropriate powdered biomass is joined in this solution, the amount of biomass
(kg) ratio with divalent metal salt and the mole of trivalent metal salt is 2:3:1.Mix the speed that suspension is with 150 revs/min
In water bath with thermostatic control vibration case, (25 DEG C) vibration obtains biomass suspension in 24 hours.Separately take the Na of 0.25mol/L2CO3Solution and
The NaOH solution mixed in equal amounts of 0.80mol/L obtains alkali liquor.Biomass suspension and alkali liquor are added dropwise in reaction vessel, instead
Answer container to be placed in thermostat water bath holding reaction temperature 60 DEG C, course of reaction is entered with motor stirrer under 300 revs/min
Row stirring, and make the reaction solution pH in reaction vessel be maintained at 10 left sides by adjusting the rate of addition of biomass suspension and alkali liquor
The right side, the most continuously stirred reaction 60 minutes after completion of dropwise addition.By reacted suspension at 90 DEG C aging 24 hours, then will obtain
Precipitate filter, and with ultra-pure water clean 3 times.Then material is dried 24 hours at 80 DEG C, obtain hydrotalcite-modified life
Material.
(2) it is pyrolyzed hydrotalcite-modified biological material
The hydrotalcite-modified biological material that (1) prepares is put into pyrolysis in tube-type atmosphere furnace fire, pyrolytic process keeps gas
The quartz ampoule of atmosphere stove seals, and in pipe, flow velocity with 400mL/min is passed through N simultaneously2, keep detesting of whole pyrolytic process with this
Oxygen condition, the heating schedule of tube furnace is set as: rise to 475 DEG C from room temperature with the heating rate heating of 5 DEG C/min, and at this
Persistently it is pyrolyzed under temperature conditions 4 hours, then starts Temperature fall process, temperature-fall period keeps N2Continue with identical flow velocity
It is passed through, after being cooled to room temperature, takes out the thermal decomposition product i.e. obtaining hydrotalcite-modified biological material.
3. the hydrotalcite-modified biological material of quadracycline and pyrolysis thereof in a removal water body as claimed in claim 2
The preparation method of product, it is characterised in that the biomass such as the raw material selection agricultural wastes of charcoal and solid waste.
4. the hydrotalcite-modified biological material of quadracycline and pyrolysis thereof in a removal water body as claimed in claim 2
The preparation method of product, it is characterised in that divalent metal salt and the mol ratio of trivalent metal salt in the preparation of described composite
For 3:1.
5. the hydrotalcite-modified biological material of quadracycline and pyrolysis thereof in a removal water body as claimed in claim 2
The preparation method of product, it is characterised in that the amount (kg) of biomass and the ratio of the mole of divalent metal salt and trivalent metal salt
Value is 2:3:1.
6. the hydrotalcite-modified biological material of quadracycline and pyrolysis thereof in a removal water body as claimed in claim 2
The preparation method of product, it is characterised in that in course of reaction, pH value of solution is maintained at about 10.
7. the hydrotalcite-modified biological material of quadracycline and pyrolysis thereof in a removal water body as claimed in claim 2
The preparation method of product, it is characterised in that in the preparation of described composite, the heating rate of tube furnace is 5 DEG C/min, the highest
Temperature is 475 DEG C, and is persistently pyrolyzed under this temperature conditions 4 hours.
8. the hydrotalcite-modified biological material of quadracycline and pyrolysis thereof in a removal water body as claimed in claim 2
The purposes of product, it is characterised in that remove quadracycline in water body with described material.
Purposes the most according to claim 8, it is characterised in that the hydrotalcite-modified biomass that the inventive method prepares
Material and thermal decomposition product thereof all have higher removal ability to the quadracycline in water body.Hydrotalcite-modified biological material
Prepare the most cheap, be the adsorbent of a kind of Cheap highly effective.The pyrolysis of hydrotalcite-modified biological material significantly improves
Its absorbability, has higher application potential.
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| CN111229161A (en) * | 2020-01-22 | 2020-06-05 | 青岛农业大学 | Using CuFeO2Method for adsorbing oxytetracycline by/BC composite magnetic material |
| CN113121043A (en) * | 2019-12-30 | 2021-07-16 | 湖北金汉江精制棉有限公司 | Purified cotton wastewater recycling system |
| CN115025749A (en) * | 2022-06-07 | 2022-09-09 | 江苏大学 | Preparation method and application of modified hydrotalcite-like adsorbent material |
| CN116173900A (en) * | 2022-09-30 | 2023-05-30 | 北京神舟茂华环保科技有限公司 | Hydrotalcite-like composite material supported by biochar structure |
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| CN106995223A (en) * | 2017-04-07 | 2017-08-01 | 华南农业大学 | A kind of piggery wastewater advanced treating and resource recycling method |
| CN106995223B (en) * | 2017-04-07 | 2020-01-17 | 华南农业大学 | Pig farm wastewater advanced treatment and resource recycling method |
| CN108970577A (en) * | 2018-07-17 | 2018-12-11 | 西北农林科技大学 | A kind of mesoporous carbon nanosheet of Co/N codope and preparation method and application |
| CN108970577B (en) * | 2018-07-17 | 2021-05-11 | 西北农林科技大学 | Application of Co/N Co-doped mesoporous carbon nanosheet |
| CN113121043A (en) * | 2019-12-30 | 2021-07-16 | 湖北金汉江精制棉有限公司 | Purified cotton wastewater recycling system |
| CN111229161A (en) * | 2020-01-22 | 2020-06-05 | 青岛农业大学 | Using CuFeO2Method for adsorbing oxytetracycline by/BC composite magnetic material |
| CN115025749A (en) * | 2022-06-07 | 2022-09-09 | 江苏大学 | Preparation method and application of modified hydrotalcite-like adsorbent material |
| CN115025749B (en) * | 2022-06-07 | 2024-06-07 | 江苏大学 | Preparation method and application of modified hydrotalcite-like adsorbent material |
| CN116173900A (en) * | 2022-09-30 | 2023-05-30 | 北京神舟茂华环保科技有限公司 | Hydrotalcite-like composite material supported by biochar structure |
| CN116173900B (en) * | 2022-09-30 | 2023-07-21 | 北京神舟茂华环保科技有限公司 | Hydrotalcite-like composite material supported by biochar structure |
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Application publication date: 20161109 |