CN102744109B - Environment-friendly aggregate with gas-liquid pollutant purifying function and preparation technology thereof - Google Patents
Environment-friendly aggregate with gas-liquid pollutant purifying function and preparation technology thereof Download PDFInfo
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- CN102744109B CN102744109B CN201210244931.7A CN201210244931A CN102744109B CN 102744109 B CN102744109 B CN 102744109B CN 201210244931 A CN201210244931 A CN 201210244931A CN 102744109 B CN102744109 B CN 102744109B
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Abstract
The invention belongs to the technical field of functional ceramics preparation, and particularly relates to environment-friendly aggregate with a gas-liquid pollutant purifying function and a preparation technology thereof. The environment-friendly aggregate with a gas-liquid pollutant purifying function is characterized by being prepared from photocatalysis material, alkaline solution and aggregate; the photocatalysis material and the alkaline solution are mixed to obtain a mixture; and the aggregate is soaked in the mixture and calcined to obtain the environment-friendly aggregate. The environment-friendly aggregate provided by the invention has lasting and efficient degradation effect on multiple organic and inorganic pollutants, is environment-friendly and has no secondary pollution.
Description
Technical field
The invention belongs to function ceramics preparing technical field, be specifically related to a kind of environment-friendly type with gas-liquid purifying pollutant function and gather materials and preparation technology.
Background technology
Along with the fast development of China's economy and urbanization, problem of environmental pollution is day by day serious.In atmosphere pollution, the pollution problem that vehicular emission causes is particularly outstanding.According to statistics, by 2011, China's motor vehicle total amount reached 2.2 hundred million, and vehicular emission thing total amount exceedes 5,600 ten thousand tons, the wherein NO of motor vehicle exhaust emission
x, PM exceedes 85% of this type of total amount of pollutants discharge in atmosphere, CH and CO exceed 70% of this type of total amount of pollutants discharge in atmosphere, have brought very big harm to health and urban environment.Except atmosphere pollution, the pollution of China's water resource is also very serious.According to People's Republic of China's national economy and social development statistical communique in 2011, in 398 water quality monitoring sections of China's seven large water systems, I～III class water quality section ratio only accounts for 56.3%, and bad V class water quality section ratio accounts for 15.3%.
At present, about the research that reduces automotive emissions mainly concentrates on the technical fields such as engine modifications, fossil fuel modification and automotive emission system catalytic purification, to reduce discharge of poisonous waste amount in motor-vehicle tail-gas, but still have quite a few harmful substance (NO
x, CO etc.) be discharged into endlessly in atmospheric environment, therefore outside purified treatment just seems particularly important.
The road air purifying material polluters such as vehicle exhaust of effectively degrading, research in the past mainly concentrate on the coating on catalysis material road pavement top layer, with the mode such as ground surface material blend, though these modes make road surface possess certain photocatalytic activity in the early stage, be difficult to keep its long-effect active.
Processing at present water pollution removes outside sewage treatment plant focuses on, mainly contain methods such as throwing in chemical agent, charcoal absorption, biomembrane, artificial swamp, microbial method, the first measure easily causes secondary pollution, charcoal absorption can only absorbed portion pollutant and only absorption do not degrade, rear three's cost is higher, and the kind of processing pollutant is also existed to very large restriction.
The functional aggregate that this invention relates under illumination condition, can continue, degrade efficiently atmosphere and water pollutant, while is due to the characteristic of its porous, it can adsorb solid suspended particles and each organic-inorganic pollutant, improve catalytic degradation efficiency, because of its loose structure, can also reach to a certain extent the object of sqouynd absorption lowering noise and blocking-up heat bridge.
Summary of the invention
The object of the invention is to provide a kind of environment-friendly type with gas-liquid purifying pollutant function to gather materials and preparation technology.
The present invention solves its technical problem by the following technical solutions: the environment-friendly type with gas-liquid purifying pollutant function is gathered materials, it is characterized in that it by catalysis material, aqueous slkali and gather materials being prepared from, catalysis material and aqueous slkali are mixed to get mixture, gather materials to immerse after mixture calcining and obtain environment-friendly type and gather materials.
It is take gather materials (porous material) as matrix, and catalysis material is loaded article, and aqueous slkali is surface interface inorganic agent and decentralized medium.
The preparation technology that above-mentioned a kind of environment-friendly type with gas-liquid purifying pollutant function is gathered materials, is characterized in that it comprises the steps:
(1) clean gathering materials: will gather materials and be placed in the ultrasonic cleaning of ultrasonic cleaning instrument, clean rear taking-up, dries, for subsequent use;
(2) prepare surperficial interface treating agent: preparation aqueous slkali is as surface interface inorganic agent;
(3) homogenous disperse loaded article: take catalysis material and insert in joined aqueous slkali, making its concentration is 1 ~ 5g/L, ultrasonic dispersion half an hour, makes it dispersed, obtains mixture, for subsequent use;
(4) negative pressure of vacuum: getting gathers materials is placed in the full water machine of vacuum, vacuumizes (vacuum is-0.090 ~-0.098MPa), then injects mixture, and the amount of mixture is gathered materials and is as the criterion with submergence, and negative pressure of vacuum is soaked the 24h that gathers materials;
(5) take out and gather materials, dry, then through 300 ~ 600 ℃ of calcining 1 ~ 3h, heating rate is 3 ~ 10 ℃/min, the environment-friendly type that obtains having gas-liquid purifying pollutant function (the supported active TiO that gathers materials
2the environment-friendly type with gas-liquid purifying pollutant function gather materials).
Described gathering materials is that any one or two kinds in 300 ~ 900 grades of haydites, porous ceramics are by the mixing of any proportioning.
Haydite used is haydites of book structure, clay haydite, lytag, garbage ceramsites, coal gangue haydite, biological sludge haydite or bed mud haydite.
Described aqueous slkali is sodium hydroxide solution, potassium hydroxide solution or ammonia spirit (aqueous solution, decentralized medium is water), and the concentration of sodium hydroxide solution, potassium hydroxide solution is 10
-4~ 10
-1mol/L, the pH value of ammonia spirit is 10 ~ 13.
Described catalysis material is selected active TiO
2, ZnO, WO
3, BiVO
4in any one.
Described active TiO
2for any one in Degussa P25, Hombikat UV100, Anatase, Millennium PC100, Ishihara ST-01.
Being dried in step (5) is dry 3 ~ 6h at 105 ℃.
In step (1), the power of ultrasonic cleaning instrument is 300W, and scavenging period is 10 ~ 50 minutes.
In step (3), ultrasonic power is 300W.
Advantage of the present invention and beneficial effect:
1. a kind of environment-friendly type with gas-liquid purifying pollutant function provided by the invention is gathered materials, environmental friendliness, and manufacturing process is easy.
2. environment-friendly type provided by the invention renewable the recycling of gathering materials, and to environment non-secondary pollution.
3. the full water negative pressure infusion method of vacuum that the present invention adopts can make catalysis material go deep in porous aggregate hole, has increased its catalytic surface long-pending, and at the sustainable degraded gas-liquid pollutant after cracking or top layer wearing and tearing that gathers materials; There is gas-liquid purifying pollutant function, so as to solve harmful gas in atmosphere, solid material is many, the with serious pollution problem of Inland Water.
4. the present invention has been owing to having carried out basification to gathering materials, and makes its surface form more defect, catalysis material and the combination between (matrix) of gathering materials more firm.
5. what the present invention adopted gathers materials due to its porous character, and it can reduce noise in road application process, and sound-absorbing effect is obvious.
6. what the present invention adopted gathers materials due to its porous character, and it also has certain insulation, soundproof effect when indoor being applied to.
7. what the present invention adopted gathers materials due to its porous character, and it can strengthen the absorption property to gas, intrinsic pest in application process, has improved photocatalysis efficiency.
8. environment-friendly type provided by the invention is gathered materials and be can be mass, practical.
9. environment-friendly type provided by the invention is gathered materials, and can, by selecting different ranks that it is suspended in water body, strengthen its detergent power to water body.
Accompanying drawing explanation
Fig. 1 is a certain hole SEM figure of functional aggregate prepared by the embodiment of the present invention 1.Fig. 1 explanation gather materials hole inside, top layer all load one deck photochemical catalyst.
Fig. 2 is a certain functional aggregate surface SEM figure prepared by the embodiment of the present invention 1.Fig. 2 illustrates that the top layer that gathers materials is all covered by photochemical catalyst.
The specific embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not only confined to the following examples.
embodiment 1:
Choose the porous shale haydite (gathering materials) of 300 grades, be placed in ultrasonic cleaning instrument ultrasonic cleaning (power of ultrasonic cleaning instrument is 300W, and scavenging period is 50 minutes), clean rear taking-up, in 105 ℃ of oven dry, the haydite after being cleaned; Weighing sodium hydroxide, soluble in water, compound concentration is 10
-1the sodium hydroxide solution of mol/L; Taking Degussa P25(is that catalysis material is selected active TiO
2) insert institute above and join in sodium hydroxide solution, making Degussa P25 concentration is 1g/L, ultrasonic dispersion half an hour, makes it dispersed, obtains mixture A; The haydite of getting after cleaning is placed in the full water machine of vacuum, vacuumizes (vacuum is-0.094MPa), then injects mixture A, and the amount of mixture A is as the criterion with submergence haydite, and negative pressure of vacuum is soaked haydite 24h; Taking out haydite, in 105 ℃ of dry 6h, then is 3 ℃/min through 600 ℃ of calcining 1h(heating rates), the environment-friendly type must with gas-liquid purifying pollutant function is gathered materials and (or is claimed supported active TiO
2the environment-friendly type haydite with gas-liquid purifying pollutant function).
Take 125W high-pressure sodium lamp as light source, gas chromatograph (GC 9650), spectrophotometric are counted testing equipment, and test is gathered materials to C respectively
6h
6and the degradation efficiency of methylene blue.Evaluation results is in table one.
embodiment 2:
Choose the periporate flyash haydite (gathering materials) of 500 grades, be placed in ultrasonic cleaning instrument ultrasonic cleaning (power of ultrasonic cleaning instrument is 300W, and scavenging period is 40 minutes), clean rear taking-up, in 105 ℃ of oven dry, the haydite after being cleaned; The ammonia spirit that preparation pH value is 10; Taking ZnO(is catalysis material) insert institute above and join in ammonia spirit, making ZnO concentration is 2g/L, ultrasonic dispersion half an hour, makes it dispersed, this mixture called after B; The haydite of getting after cleaning is placed in the full water machine of vacuum, vacuumizes (vacuum is-0.098MPa), then injects B, and the amount of B is as the criterion with submergence haydite, and negative pressure of vacuum is soaked haydite 24h; Taking out haydite, in 105 ℃ of dry 3h, then is 5 ℃/min through 300 ℃ of calcining 3h(heating rates), the environment-friendly type must with gas-liquid purifying pollutant function gather materials (or weighing-appliance has the environment-friendly type haydite of gas-liquid purifying pollutant function).
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
embodiment 3:
Choose the adobe haydite (gathering materials) of 700 grades, be placed in ultrasonic cleaning instrument ultrasonic cleaning (power of ultrasonic cleaning instrument is 300W, and scavenging period is 30 minutes), clean rear taking-up, in 105 ℃ of oven dry, the haydite after being cleaned; Take potassium hydroxide, soluble in water, compound concentration is 10
-4the potassium hydroxide solution of mol/L; Take WO
3(being catalysis material) inserted above and joined in potassium hydroxide solution, makes WO
3concentration is 5g/L, ultrasonic dispersion half an hour, makes it dispersed, this mixture called after C; The haydite of getting after cleaning is placed in the full water machine of vacuum, vacuumizes (vacuum is-0.096MPa), then injects C, and the amount of C is as the criterion with submergence haydite, and negative pressure of vacuum is soaked haydite 24h; Taking out haydite, in 105 ℃ of dry 4h, then is 8 ℃/min through 450 ℃ of calcining 2h(heating rates), obtain the environment-friendly type that tool has gas-liquid purifying pollutant function gather materials the environment-friendly type haydite of gas-liquid purifying pollutant function (or claim to have).
The photocatalysis performance evaluation method that this gathers materials with embodiment 1. evaluation results in table one.
embodiment 4:
Choose the garbage ceramsites (gathering materials) of 800 grades, be placed in ultrasonic cleaning instrument ultrasonic cleaning (power of ultrasonic cleaning instrument is 300W, and scavenging period is 20 minutes), clean rear taking-up, in 105 ℃ of oven dry, the haydite after being cleaned; Take potassium hydroxide, soluble in water, compound concentration is 10
-3the potassium hydroxide solution of mol/L; Take BiVO
4(being catalysis material) inserted above and joined in potassium hydroxide solution, makes BiVO
4concentration is 4g/L, ultrasonic dispersion half an hour, makes it dispersed, this mixture called after D; The haydite of getting after cleaning is placed in the full water machine of vacuum, vacuumizes (vacuum is-0.090MPa), then injects D, and the amount of D is as the criterion with submergence haydite, and negative pressure of vacuum is soaked haydite 24h; Taking out haydite, in 105 ℃ of dry 4h, then is 10 ℃/min through 400 ℃ of calcining 2h(heating rates), the environment-friendly type must with gas-liquid purifying pollutant function gather materials (or weighing-appliance has the environment-friendly type haydite of gas-liquid purifying pollutant function).
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
embodiment 5:
Choose the porous ceramics (gathering materials) of 900 grades, be placed in ultrasonic cleaning instrument ultrasonic cleaning (power of ultrasonic cleaning instrument is 300W, and scavenging period is 10 minutes), clean rear taking-up, in 105 ℃ of oven dry, gathering materials after being cleaned; The ammonia spirit that preparation pH value is 13; Taking Hombikat UV100(is catalysis material) insert institute above and join in ammonia spirit, making its concentration is 3g/L, ultrasonic dispersion half an hour, makes it dispersed, this mixture called after E; Get and be placed in the full water machine of vacuum gathering materials after cleaning, vacuumize (vacuum is-0.096MPa), then inject E, the amount of E is gathered materials with submergence and is as the criterion, and negative pressure of vacuum is soaked the 24h that gathers materials; Taking-up is gathered materials, and in 105 ℃ of dry 5h, then is 10 ℃/min through 400 ℃ of calcining 2h(heating rates), the environment-friendly type must with gas-liquid purifying pollutant function is gathered materials.
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
embodiment 6:
Substantially the same manner as Example 1, difference is: the porous shale haydite (gathering materials) of 300 grades is replaced by the coal gangue haydite of 900 grades.
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
embodiment 7:
Substantially the same manner as Example 1, difference is: the porous shale haydite (gathering materials) of 300 grades is replaced by the biological sludge haydite of 300 grades.
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
embodiment 8:
Substantially the same manner as Example 1, difference is: the porous shale haydite (gathering materials) of 300 grades is replaced by the bed mud haydite of 900 grades.
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
embodiment 9:
Substantially the same manner as Example 5, difference is: Hombikat UV100(is catalysis material) replaced by Anatase.
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
embodiment 10:
Substantially the same manner as Example 5, difference is: Hombikat UV100(is catalysis material) replaced by Millennium PC100.
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
embodiment 11:
Substantially the same manner as Example 5, difference is: Hombikat UV100(is catalysis material) replaced by Ishihara ST-01.
The photocatalysis performance evaluation method that this gathers materials is with embodiment 1, and evaluation result is in table one.
Remarks: 1. CO herein
2amount is the 80min degraded C that gathers materials
6h
6institute's growing amount, gather materials consumption take 100 grams of 300 grades of haydites of book structure as standard, it is example number that other example aggregate quality used all utilizes volume mass conversion formula mi=ρ i × m1/ ρ 1(i) calculate, wherein mi is example i aggregate quality used, ρ i is the example i apparent density of gathering materials used;
2. the time is the degradable 200ml that gathers materials, 10mg/L methylene blue solution time used herein, and the consumption that gathers materials is take 25 grams of 300 grades of haydites of book structure as standard, and the consumption conversion of gathering materials of other example is the same.
Table one illustrates that environment-friendly type of the present invention gathers materials and have gas-liquid purifying pollutant function.
Claims (7)
1. there is the preparation technology that the environment-friendly type of gas-liquid purifying pollutant function is gathered materials, it is characterized in that it comprises the steps:
(1) clean gathering materials: will gather materials and be placed in the ultrasonic cleaning of ultrasonic cleaning instrument, clean rear taking-up, dries, for subsequent use;
(2) prepare surperficial interface treating agent: preparation aqueous slkali is as surface interface inorganic agent;
(3) homogenous disperse loaded article: take catalysis material and insert in joined aqueous slkali, making its concentration is 1 ~ 5g/L, ultrasonic dispersion half an hour, makes it dispersed, obtains mixture, for subsequent use;
(4) negative pressure of vacuum: getting gathers materials is placed in the full water machine of vacuum, vacuumizes, and then injects mixture, and the amount of mixture is gathered materials and is as the criterion with submergence, and negative pressure of vacuum is soaked the 24h that gathers materials;
(5) take out and gather materials, dry, then through 300 ~ 600 ℃ of calcining 1 ~ 3h, heating rate is 3 ~ 10 ℃/min, the environment-friendly type that obtains having gas-liquid purifying pollutant function is gathered materials.
2. the preparation technology that the environment-friendly type with gas-liquid purifying pollutant function according to claim 1 is gathered materials, is characterized in that: described gathering materials is that any one or two kinds in 300 ~ 900 grades of haydites, porous ceramics are by the mixing of any proportioning.
3. the preparation technology that a kind of environment-friendly type with gas-liquid purifying pollutant function according to claim 2 is gathered materials, is characterized in that: haydite used is haydites of book structure, clay haydite, lytag, garbage ceramsites, coal gangue haydite, biological sludge haydite or bed mud haydite.
4. the preparation technology that the environment-friendly type with gas-liquid purifying pollutant function according to claim 1 is gathered materials, it is characterized in that: described aqueous slkali is sodium hydroxide solution, potassium hydroxide solution or ammonia spirit, the concentration of sodium hydroxide solution, potassium hydroxide solution is 10
-4~ 10
-1mol/L, the pH value of ammonia spirit is 10 ~ 13.
5. the preparation technology that the environment-friendly type with gas-liquid purifying pollutant function according to claim 1 is gathered materials, is characterized in that: described catalysis material is selected active TiO
2, ZnO, WO
3, BiVO
4in any one.
6. the preparation technology that the environment-friendly type with gas-liquid purifying pollutant function according to claim 5 is gathered materials, is characterized in that: described active TiO
2for any one in Degussa P25, Hombikat UV100, Anatase, Millennium PC100, Ishihara ST-01.
7. the preparation technology that the environment-friendly type with gas-liquid purifying pollutant function according to claim 1 is gathered materials, is characterized in that: being dried in step (5) is dry 3 ~ 6h at 105 ℃.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377729A (en) * | 2001-04-05 | 2002-11-06 | 上海欧臣环境高科技有限责任公司 | Purifying material capable of removing organic gas in air and its preparing method |
| JP2005111355A (en) * | 2003-10-07 | 2005-04-28 | Meidensha Corp | Photocatalyst, photocatalyst-carried ceramic porous body, decomposition cleaning method for toxic substance and gas cleaning device |
| CN101817696A (en) * | 2010-03-29 | 2010-09-01 | 岳阳瑞塔光电科技有限公司 | Preparation method of nano titanium dioxide thin film materials loaded on surface of ceramic body |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377729A (en) * | 2001-04-05 | 2002-11-06 | 上海欧臣环境高科技有限责任公司 | Purifying material capable of removing organic gas in air and its preparing method |
| JP2005111355A (en) * | 2003-10-07 | 2005-04-28 | Meidensha Corp | Photocatalyst, photocatalyst-carried ceramic porous body, decomposition cleaning method for toxic substance and gas cleaning device |
| CN101817696A (en) * | 2010-03-29 | 2010-09-01 | 岳阳瑞塔光电科技有限公司 | Preparation method of nano titanium dioxide thin film materials loaded on surface of ceramic body |
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