CN103433047A - Preparation method for samarium oxide-modified supported iron oxide microwave catalyst and application for of same in sterilization and algae killing - Google Patents

Preparation method for samarium oxide-modified supported iron oxide microwave catalyst and application for of same in sterilization and algae killing Download PDF

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CN103433047A
CN103433047A CN2013103813767A CN201310381376A CN103433047A CN 103433047 A CN103433047 A CN 103433047A CN 2013103813767 A CN2013103813767 A CN 2013103813767A CN 201310381376 A CN201310381376 A CN 201310381376A CN 103433047 A CN103433047 A CN 103433047A
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catalyst
active carbon
microwave
iron oxide
modified load
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CN2013103813767A
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Chinese (zh)
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温龙平
蒋应康
魏鹏飞
张丽亚
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无锡优胜美迪环保科技有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The invention provides a preparation method for a samarium oxide-modified supported iron oxide microwave catalyst and an application for of the same in sterilization and algae killing. The method comprises the following steps of: using active carbon as a supporter for the catalyst, soaking the active carbon in the mixed solution of Sm(NO3)3 and Fe(NO3)3, then obtaining the microwave catalyst after ultrasonic treatment and roasting. Compared with the prior art, the microwave catalyst provided by the invention is simple in method, strong in operability and strong in algae removal capacity, has killing and degradation effects on algae and a degradation effect on algal toxins, and cannot bring secondary pollution to environment due to no use of heavy metal materials.

Description

The preparation of samarium oxide modified load iron oxide microwave catalyst and the application in sterilization algae removal thereof

Technical field

The present invention relates to a kind of preparation method of catalyst, relate in particular to a kind of preparation of samarium oxide modified load iron oxide microwave catalyst and the application in sterilization algae removal thereof.

Background technology

Body eutrophication is the great environmental problem that current countries in the world face.One of them serious consequence of body eutrophication is the generation of blue-green alga bloom.The generation of wawter bloom can reduce the availability of water resource, gives daily life and produces and bring huge negative effect, and the part blue-green algae can enter water body by secretion algae toxin in the process of self metabolism, and water resource is caused to serious pollution.The method of administering at present blue algae mainly is divided into: Physical (flocculating setting), chemical method (chemistry is killed method, the light degradation method), bioanalysis (the molten algae of microorganism, microorganism bite algae and water plant suppresses) and Synthetic logos.

Physical be take flocculating setting as main, is mainly to add flocculant frond is flocculated to water bottom, then salvages or hold back removal.This kind of method workload is large, is applicable to small water.

Physico-chemical process: coagulant precipitation, dosing air supporting.But all there are a series of defects such as time-consuming, expensive and operating difficulties, and can not fundamentally solve the body eutrophication problem.

Ultrasonic algae removing: mainly utilize hyperacoustic void effect, destroy the algae wall, kill frustule.This method is easy and simple to handle, efficient, but is difficult to solve the problem that the algae toxin discharges.

Chemistry is killed method: mainly by potassium permanganate or copper sulphate etc., suppress the growth of the medicament inhibition blue-green algae of blue-green algae metabolism, the while is by means of the flocculation sedimentation algae of metal ion.The algae removal medicament added may cause heavy metal pollution by water body, to the water body other biological, also can bring harm.

The light degradation method is mainly to kill and wound Cells of Blue-green Algae by ultraviolet light or by means of the sensitising agent catalytic oxidation, the method for degraded algae toxin.Easy and simple to handle, treatment effeciency is high, produces and has the probability of toxic byproduct less.This kind of method may be limited to the penetration capacity of light.

The molten algae of microorganism: by biting algae fungi, bacterium or virus " parasitism " in the blue-green algae body, kill Cells of Blue-green Algae.Microorganism bites algae: introduce fish or the shellfish that bites algae in water body.Water plant suppresses: water plant suppresses blue-green algae by allelopathy.Utilize biological treatment to process blue-green algae and will consider that whether species to be introduced work the mischief to the ecological balance of water body.

Microwave catalysis oxidation technique (Microwave Induced Oxidation Process, MIOP): the microwave (Microwave that is mainly 300MHz-3000GHz by means of frequency range, MW) and microwave absorption, in local TRANSIENT HIGH TEMPERATURE, the organic process of degradation selectivity of producing of microwave absorption.Document: [Li, P.; Zhang, L.; Wang, W.; Su, J.; Feng, L., Rapid catalytic microwave method to damage Microcystis aeruginosa with FeCl3-loaded active carbon.Environ Sci Technol2011,45 (10), 4521-6] a kind of green new method of quick improvement blue-green alga bloom is provided, the method shows the immobilized FeCl of having 3the seed activity ature of coal column-shaped active carbon energy that can absorb microwave produce hot localised points on the surface of active carbon, simultaneously by means of the catalytic performance of the catalyst of metal, the oxidative degradation microcystic aeruginosa.As everyone knows, active carbon (Active Carbon is called for short AC) is a kind of catalyst carrier commonly used, and it has the specific area of super large.Yet said method is by the simple surface impregnation Fe at active carbon 3+, Fe 3+be easy to separate out from the surface of active carbon, thus the service life (only can use continuously five times) of reducing catalyst, and simultaneously, immobilized have a FeCl 3the microwave catalysis oxidation of seed activity ature of coal column-shaped active carbon mediation whether the algae toxin is had to removal effect or unknown.Chinese patent: publication number CN1602996A discloses a kind of activated carbon fiber method for preparing catalyst of the tin modification of the iron for microwave induced oxidation process, microwave catalyst after the modification is wherein disclosed than active carbon, catalytic efficiency has improved 5~10 times, extended service life, experiment is reused more than 10 times, its clearance remains on more than 80%, has reduced the consumption of catalyst, and its consumption is only 1/10th of granulated carbon.

Summary of the invention

The object of the present invention is to provide a kind of preparation method that can microwave energy absorbing rare-earth oxidation samarium modified load iron oxide microwave catalyst, this preparation method is simple, strong operability.

For reaching aforementioned purpose, the preparation method of a kind of samarium oxide modified load of the present invention iron oxide microwave catalyst, the method adopts the carrier of active carbon as catalyst, and described active carbon is immersed in to Sm (NO 3) 3and Fe (NO 3) 3in mixed solution, then after ultrasonic and roasting, obtain microwave catalyst.

According to a specific embodiment of the present invention, the concrete steps of the method are:

(1) Activated Carbon Pretreatment: described active carbon is heated by cleaning and obtains uniform activated carbon granule in boiling water, and then by described activated carbon granule dry for standby;

(2) pretreated active carbon in (1) is immersed in to Sm (NO 3) 3and Fe (NO 3) 3mixed solution in, then add urea, wherein active carbon, Fe 3+, Sm 3+with the weight ratio of urea be 1:(1~2): (1~3): (6~10);

(3) said mixture is carried out to ultrasonic processing, then take out and carry out drying under 100~120 ℃, obtain catalyst precursor;

(4) catalyst precursor step (3) obtained roasting scheduled time under the protective atmosphere of predetermined temperature, be prepared into modified load iron oxide microwave catalyst.

According to a specific embodiment of the present invention, between described step (1) and step (2), also comprise the active carbon pre-oxidation step.

According to a specific embodiment of the present invention, described active carbon pre-oxidation step is: preparation, containing the mixed solution of the hydrogen peroxide of 10% nitric acid and 10%, is immersed in 1h in this mixed solution by pretreated active carbon, then takes out under 105 ℃ and dries 4h.

According to a specific embodiment of the present invention, in described step (1), described active carbon is the ature of coal column-shaped active carbon, the particle diameter of described active carbon is 0.5-1mm, described active carbon is removed comparatively tiny granulated carbon component by washed with de-ionized water heat 30min in boiling water after, obtain the comparatively activated carbon granule of homogeneous, the bake out temperature of described activated carbon granule is 105 ℃, and drying time is 24h.

According to a specific embodiment of the present invention, active carbon, Fe in described step (2) 3+, Sm 3+with the weight ratio of urea be 1:1.5:2.5:8.

According to a specific embodiment of the present invention, in step (3), described ultrasonic time is 1h, and be 2h drying time.

According to a specific embodiment of the present invention, in step (4), described protective atmosphere is vacuum or nitrogen, and sintering temperature is 300 ℃, and roasting time is 4h.

Another object of the present invention is to provide a kind of catalyst, this catalyst is to be made by said method, and this catalyst is mainly used in sterilizing, trade effluent improvement and the soil remediation etc. of catalyzing oxidizing degrading blue-green algae and algae toxin, domestic water and drinking water.

Beneficial effect of the present invention: the present invention, by activated carbon surface is carried out to the chemical modification processing, strengthens its absorbability to microwave, and method is simple, strong operability, prepared catalyst is stronger except the algae ability, not only frond is had and kills and wounds and degradation, and the algae toxin is also had to degradation; Because the present invention does not use heavy metal material, can not bring secondary pollution to environment, not only can be for frond be processed, can also be for the sterilizing of domestic water and drinking water, trade effluent improvement, soil remediation etc.

The accompanying drawing explanation

Fig. 1 is cooling and reflux device schematic diagram of the present invention;

Fig. 2 be under the different disposal condition algae solution at the light absorption value at wavelength 680nm place;

Fig. 3 is the concentration of chlorophyll-a under the different disposal condition;

Fig. 4 is the impacts of the access times of the catalyst for preparing of the present invention on the concentration of chlorophyll-a.

The specific embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Alleged " embodiment " or " embodiment " refers to special characteristic, structure or the characteristic that can be contained at least one implementation of the present invention herein.Different local in this manual " in one embodiment " that occur not all refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.

The experimental subjects of applying in the present invention is microcystic aeruginosa (microcystis aeroginosa) and Escherichia coli (Escherichia coli, E.coli) KRX bacterial strain, and described microcystic aeruginosa derives from Chinese University of Science and Technology's school of life and health sciences.Microcystic aeruginosa is to raise in the BG11 culture medium, and temperature is controlled at 28 ℃, time 24h, and wherein solar radiation is 12 hours, dark 12 hours.Manually rock culture medium every day 4 times.Described Escherichia coli, by sterile working, are raised in the Ampicillin+LB culture medium, and 37 ℃ of cultivations, when colony growth enters logarithmic phase, carry out correlation test.

In the present invention, described active carbon rises for Gongyi City's space the ature of coal column-shaped active carbon that scavenging material Co., Ltd provides.

Refer to Fig. 1, it is cooling and reflux device schematic diagram of the present invention.As shown in Figure 1, it microwave emitter 5 that comprises microwave reactor 1, is positioned at the round-bottomed flask 2 of microwave reactor 1 and is positioned at microwave reactor 1 inwall.Described microwave reactor 1 is positioned on the micro-wave oven (not shown), the bottle mouth position of described round-bottomed flask 2 is provided with cooling device 6, the lower end of described cooling device 6 offers water inlet 61, and upper end offers delivery port 62, in experimentation, by 6 pairs of round-bottomed flasks of cooling device 2, is undertaken cooling.The microwave field that the present invention produces by means of microwave emitter 5 by microwave catalyst 3 is processed microcystic aeruginosa solution 4.

Embodiment 1

The step of this embodiment 1 is as follows: (1) Activated Carbon Pretreatment: the ature of coal column-shaped active carbon that by particle diameter, is at first 0.5~1mm left and right heats 30min in boiling water, then remove comparatively tiny granulated carbon component with the deionized water washing, obtain the comparatively activated carbon granule of homogeneous, take out in 105 ℃ of oven dry 24h, be stored in drier standby; (2) by pretreated activated carbon granule incipient impregnation at Sm (NO 3) 3and Fe (NO 3) 3mixed solution in, then add urea, wherein active carbon, Fe 3+, Sm 3+with the weight ratio of urea be 1:(1~2): (1~3): (6~10); (3) by said mixture ultrasonic immersing 1h, then take out dry 2h under 100~120 ℃, obtain catalyst precursor; (4) catalyst precursor step (3) obtained, under vacuum or nitrogen protection, in 300 ℃ of lower roastings 4 hours, is prepared into modified load iron oxide microwave catalyst.In another embodiment, described active carbon, Fe 3+, Sm 3+with the weight ratio of urea can also be 1:1:1:6,1:2:3:7,1:2:2:9,1:2:3:10 or 1:1.5:2.5:8.

Embodiment 2

The step of this embodiment is as follows: (1) Activated Carbon Pretreatment: the ature of coal column-shaped active carbon that by particle diameter, is at first 0.5~1mm left and right heats 30min in boiling water, then remove comparatively tiny granulated carbon component with the deionized water washing, obtain the comparatively activated carbon granule of homogeneous, take out in 105 ℃ of oven dry 24h, be stored in drier standby; (2) active carbon pre-oxidation: preparation, containing the mixed solution of the hydrogen peroxide of 10% nitric acid and 10%, is immersed in 1h in this mixed solution by pretreated activated carbon granule, takes out and dry 4h under 105 ℃; (3) by the active carbon incipient impregnation after pre-oxidation at Sm (NO 3) 3and Fe (NO 3) 3mixed solution in, then add urea, wherein active carbon, Fe 3+, Sm 3+with the weight ratio of urea be 1:(1~2): (1~3): (6~10); (4) by said mixture ultrasonic immersing 1h, then take out dry 2h under 100~120 ℃, obtain catalyst precursor; (5) catalyst precursor step (3) obtained, under vacuum or nitrogen protection, in 300 ℃ of lower roasting 4h, is prepared into modified load iron oxide microwave catalyst.In another embodiment, described active carbon, Fe 3+, Sm 3+with the weight ratio of urea can also be 1:1:1:6,1:2:3:7,1:2:2:9,1:2:3:10 or 1:1.5:2.5:8.

Embodiment 3

As shown in Figure 1, taking out 1g from the microwave catalyst of embodiment 2 preparations joins in the round-bottomed flask 2 of the 100ml that fills 50ml microcystic aeruginosa dilution 4, the nominal operation frequency of then regulating micro-wave oven is 2.45GHZ, and microwave treatment time is 0,1,2,3,4min.In experiment, adopt magnetic stirring apparatus fully to stir.In this embodiment, (model is MM721AAU-PW to the micro-wave oven that described micro-wave oven is 700W family expenses U.S., operating frequency is 2.45GHZ), in other embodiments, model and operating frequency to micro-wave oven do not limit, as long as the microwave field that can make microwave catalyst 3 produce by means of microwave emitter 5 is processed microcystic aeruginosa solution 4.The present invention does not limit the model of described round-bottomed flask.

Microcystic aeruginosa solution after the catalyst treatment below prepared by the present invention is detected.Annotate: for the ease of distinguishing, in the present invention, by blank group echo, be Cont.; Simple active carbon is labeled as AC; Simple modified catalyst is labeled as Catalyst; Simple microwave labeling is MW; Microwave+active carbon is labeled as MW+AC; Microwave+modified catalyst note is designated as MW+Catalyst.

One: the detection of algae removal efficiency

Use microwell plate spectrophotometer (ELX800, Bio-Tek Instruments.Inc., USA) to be detected each Comparative Examples and embodiment, testing result is shown in Fig. 2.Wherein, process the light absorption value OD of front microcystic aeruginosa suspension at wavelength 680nm place 680be 0.5.The consumption of the simple active carbon wherein, used in test process is 5 times of independent modified catalyst.

As shown in Figure 2, the OD of Comparative Examples 1, Comparative Examples 2 and 3 pairs of microcystic aeruginosa suspension of Comparative Examples 680almost without affecting (not shown).And embodiments of the invention 3 samarium oxide modification iron oxide bearing active carbon microwave catalyst are after microwave auxiliary lower processed 3 minutes, algae liquid OD 680reduced by 80.0%.

Two, the microcystic aeruginosa solution after processing is carried out to the Chl-a(chlorophyll a) extracting and the light absorption value of value measure

Assay method is referring to document: [Wellburn, A.R.; Gounaris, I.; Fassler, L.; Lichtenthaler, H.K., Changes in Plastid Ultrastructure and Fluctuations of Cellular Isoprenoid and Carbohydrate Compounds during Continued Etiolation of Dark-Grown Oat Seedlings.Physiol Plantarum1983,59 (3), 347-354.].Experimental result is as Fig. 3.As shown in Figure 3, Comparative Examples 1, Comparative Examples 2 and the Comparative Examples 3 chl-a(chlorophyll a on microcystic aeruginosa suspension) almost without affecting (not shown).Samarium oxide modification iron oxide bearing active carbon microwave catalyst prepared by the present invention after microwave auxiliary lower processed 4 minutes, chl-a(chlorophyll a in microcystic aeruginosa solution) concentration reduced by 90.9%.

Three, the microwave catalyst that adopts the present invention to prepare is to algae phycotoxin MC-LR and the MC-RR mensuration of degrading

This strain microcystic aeruginosa is for producing strain, by high performance liquid chromatography (High Performance Liquid Chromatography HPLC; Agilent1100) determine that MC-RR standard items (ALX-350-043, Alexis) retention time is 4.87min, MC-LR(ALX-350-012, Alexis) retention time of standard items is 11.82min.Adopt MC-LR, the MC-RR of 70% methyl alcohol, 5% acetic acid organic system extraction process front and back, adopt HPLC to carry out quantitatively MC-LR, the MC-RR of extracting.Experimental result shows, this system processing blue-green algae solution 3 minutes, and the efficiency of removing MC-LR, two kinds of algae toxin of MC-RR is respectively 78.3%, 82.0%.Microwave catalysis oxidation is except can killing and wounding the degraded blue-green algae, and algae phycotoxin MC-LR and MC-RR can also degrade.

Embodiment 4

The microwave catalyst that embodiment 2 is obtained, adopts the method identical with embodiment 3, processes continuously microcystic aeruginosa solution 4min14 time that is about 5.5mg/L containing Chl-a, measures the content of processing front and back microcystic aeruginosa solution C hl-a.The results are shown in Figure 4, as shown in Figure 4, microwave catalyst has stability preferably, uses continuously 11 times, and catalytic efficiency still remains on (annotate, in Fig. 4, Control1 is the space management contrast, and Test1 is microwave and microwave catalyst coupling) more than 80%; Use continuously after 14 times, the regeneration rear catalyst is used 11 times more continuously, and catalytic efficiency still remains on (annotate: in Fig. 4, Control2 is the space management contrast, and Test2 is microwave and Microwave Senstizer coupling) more than 80%.

Embodiment 5

The microwave catalyst of embodiment 2 preparations is taken out to 1g to add in the round-bottomed flask in Fig. 1, round-bottomed flask inside fills 1000 E.coli/mL of concentration, volume is 50mL Escherichia coli solution (water is physiological saline), detect MW, MW+Catalyst mode according to the experiment condition in embodiment 3 and process Escherichia coli number change after 10s, 20s, calculate colibacillary fragmentation effect.Ask for an interview table 1, it kills and wounds E.coli efficiency for Different treatments.

Table 1

? 10s 20s Catalyst 0.01% 0.05% MW 10.36% 16.34% MW+Catalyst 95.74% 100%

As shown in Table 1, add the microwave catalyst United microwave to process at 10s, the Escherichia coli killing rate is 95.74%; Simple Microwave Treatment 10s, colibacillary killing-efficiency is only 10.36%.This embodiment detects Escherichia coli quantity by the limiting dilution rubbing method, and wherein the specific practice of limiting dilution rubbing method is as follows:

Get n and prop up the test tube that the 2ml sterilized water is housed, numbering is from 10 -1~10 -n, the viable bacteria concentration of the concrete numerical basis bacteria suspension of n and determining.In this experiment, n generally gets 9 and gets final product.Under sterile working, draw 0.2ml with aseptic pipette from the fluid nutrient medium bacteria suspension, put into numbering 10 -1test tube in, use the 1mL pipettor to mix, purpose is that the bacteria suspension in pipette is all washed down and mixed, and makes 10 -1bacterium liquid.Inhale 10 of 0.2ml with pipettor -1bacteria suspension, put into numbering 10 -2mix in test tube, repeat above operation and make 10 -2bacteria suspension.The rest may be inferred, until number 10 -7test tube, make different dilution bacteria suspensions.Respectively from 10 -5, 10 -6, 10 -7take out 100ul in the bacterium liquid of three groups of dilutions, be coated on the LB culture medium solid plate with ammonia benzyl antibiotic resistance, growth 48h, calculate colibacillary clump count, and calculate corresponding bacterium liquid bacterial concentration.Each concentration at least is coated with three flat boards.

The present invention, by activated carbon surface is carried out to the chemical modification processing, strengthens its absorbability to microwave, and method is simple, strong operability, except the algae ability is stronger, prepared catalyst is stronger except the algae ability, not only frond is had and kills and wounds and degradation, the algae toxin is also had to degradation; Because the present invention does not use heavy metal material, can not bring secondary pollution to environment, not only can be for frond be processed, can also be for the sterilizing of domestic water and drinking water, trade effluent improvement, soil remediation etc.

Above-mentioned explanation has fully disclosed the specific embodiment of the present invention.It is pointed out that being familiar with any change that the person skilled in art does the specific embodiment of the present invention does not all break away from the scope of claims of the present invention.Correspondingly, the scope of claim of the present invention also is not limited only to previous embodiment.

Claims (10)

1. the preparation method of a samarium oxide modified load iron oxide microwave catalyst is characterized in that: the method adopts the carrier of active carbon as catalyst, and described active carbon is immersed in to Sm (NO 3) 3and Fe (NO 3) 3in mixed solution, then after ultrasonic and roasting, obtain microwave catalyst.
2. the preparation method of samarium oxide modified load iron oxide microwave catalyst according to claim 1, it is characterized in that: the concrete steps of the method are:
(1) Activated Carbon Pretreatment: described active carbon is heated by cleaning and obtains uniform activated carbon granule in boiling water, and then by described activated carbon granule dry for standby;
(2) pretreated active carbon in (1) is immersed in to Sm (NO 3) 3and Fe (NO 3) 3mixed solution in, then add urea, wherein active carbon, Fe 3+, Sm 3+with the weight ratio of urea be 1:(1~2): (1~3): (6~10);
(3) said mixture is carried out to ultrasonic processing, then take out and carry out drying under 100~120 ℃, obtain catalyst precursor;
(4) catalyst precursor step (3) obtained roasting scheduled time under the protective atmosphere of predetermined temperature, be prepared into modified load iron oxide microwave catalyst.
3. the preparation method of samarium oxide modified load iron oxide microwave catalyst according to claim 2, is characterized in that: between described step (1) and step (2), also comprise the active carbon pre-oxidation step.
4. the preparation method of samarium oxide modified load iron oxide microwave catalyst according to claim 3, it is characterized in that: described active carbon pre-oxidation step is: preparation is containing the mixed solution of the hydrogen peroxide of 10% nitric acid and 10%, pretreated active carbon is immersed in to 1h in this mixed solution, then takes out under 105 ℃ and dry 4h.
5. the preparation method of samarium oxide modified load iron oxide microwave catalyst according to claim 2, it is characterized in that: in described step (1), described active carbon is the ature of coal column-shaped active carbon, the particle diameter of described active carbon is 0.5-1mm, described active carbon is removed comparatively tiny granulated carbon component by washed with de-ionized water heat 30min in boiling water after, obtain the comparatively activated carbon granule of homogeneous, the bake out temperature of described activated carbon granule is 105 ℃, and drying time is 24h.
6. the preparation method of samarium oxide modified load iron oxide microwave catalyst according to claim 2, is characterized in that: active carbon, Fe in described step (2) 3+, Sm 3+with the weight ratio of urea be 1:1.5:2.5:8.
7. the preparation method of samarium oxide modified load iron oxide microwave catalyst according to claim 2, it is characterized in that: in step (3), described ultrasonic time is 1h, and be 2h drying time.
8. the preparation method of samarium oxide modified load iron oxide microwave catalyst according to claim 2, it is characterized in that: in step (4), described protective atmosphere is vacuum or nitrogen, and sintering temperature is 300 ℃, and roasting time is 4h.
9. a catalyst, it is characterized in that: it is to be made by the method as claim 1 to 8.
10. the application of catalyst in sterilization algae removal, it is characterized in that: this catalyst as claimed in claim 9.
CN2013103813767A 2013-08-28 2013-08-28 Preparation method for samarium oxide-modified supported iron oxide microwave catalyst and application for of same in sterilization and algae killing CN103433047A (en)

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Citations (6)

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Publication number Priority date Publication date Assignee Title
CN1602996A (en) * 2004-08-06 2005-04-06 哈尔滨工业大学 Process for preparing Fe-Sn modified active carbon fibre catalyst for microwave induced oxidation
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CN101791549A (en) * 2010-03-30 2010-08-04 东南大学 Method for preparing formed selective catalytic reduction denitration catalyst by using ultrasonic mixing sedimentation method
CN101972622A (en) * 2010-09-30 2011-02-16 华中师范大学 Carbon-based catalyst-based blue algae microwave treatment method
CN102992444A (en) * 2012-12-25 2013-03-27 湘潭大学 Method for degrading organic wastewater by adopting active carbon-based microwave catalyst
CN103071489A (en) * 2011-10-25 2013-05-01 上海纳米技术及应用国家工程研究中心有限公司 Supported active carbon catalytic material capable of eliminating formaldehyde at room temperature and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1602996A (en) * 2004-08-06 2005-04-06 哈尔滨工业大学 Process for preparing Fe-Sn modified active carbon fibre catalyst for microwave induced oxidation
CN101116819A (en) * 2007-07-05 2008-02-06 武汉科技大学 Microwave inducing catalyst and method for preparing the same
CN101791549A (en) * 2010-03-30 2010-08-04 东南大学 Method for preparing formed selective catalytic reduction denitration catalyst by using ultrasonic mixing sedimentation method
CN101972622A (en) * 2010-09-30 2011-02-16 华中师范大学 Carbon-based catalyst-based blue algae microwave treatment method
CN103071489A (en) * 2011-10-25 2013-05-01 上海纳米技术及应用国家工程研究中心有限公司 Supported active carbon catalytic material capable of eliminating formaldehyde at room temperature and preparation method thereof
CN102992444A (en) * 2012-12-25 2013-03-27 湘潭大学 Method for degrading organic wastewater by adopting active carbon-based microwave catalyst

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Application publication date: 20131211