CN101502804A - Adsorption-catalyst for processing wastewater containing phenyl hydrate as well as production method and use - Google Patents
Adsorption-catalyst for processing wastewater containing phenyl hydrate as well as production method and use Download PDFInfo
- Publication number
- CN101502804A CN101502804A CNA2008101905706A CN200810190570A CN101502804A CN 101502804 A CN101502804 A CN 101502804A CN A2008101905706 A CNA2008101905706 A CN A2008101905706A CN 200810190570 A CN200810190570 A CN 200810190570A CN 101502804 A CN101502804 A CN 101502804A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- absorption
- active carbon
- phenol
- carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Catalysts (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to an adsorbent-catalyst for treating phenol-containing wastewater, which is characterized in that with Cu as an active component, K, Zn or Ce as an auxiliary component and active carbon as a carrier, the catalyst comprises the following components in percentage by weight: 1 to 5 percent of the Cu, 1 to 5 percent of the auxiliary component and 85 to 98 percent of the active carbon; and the surface area of the active carbon is 500 to 1,500 m<2>/g. The catalyst is prepared by adopting an equivalent-volume co-impregnation method. The phenol-containing wastewater is adsorbed by the adsorbent-catalyst using the active carbon as the carrier, dried under normal temperature and injected with oxidizing gas to react. The adsorbent-catalyst has the advantages of good adsorption performance, mild catalytic oxidation condition, low energy consumption, simple process, simple operation, catalytic oxidation in situ, and no secondary pollution generation.
Description
The present invention is for dividing an application, and former number of patent application is 200510048218.5, and the applying date is on December 21st, 2005.
Technical field
The invention belongs to a kind of absorption-catalyst and application process thereof, relating in particular to a kind of is the multicomponent absorption-Preparation of catalysts and the using method of main active component with the transition metal.
Background technology
The source of wastewater containing phenol is very extensive.Coke-oven plant, oil plant, petrochemical industry, gas generating station, plastic molding and processing plant, resin processing plant, insulating material factory, wood preserving plant, pharmaceutical factory and Fibre Plant etc. all produce wastewater containing phenol.The importance of phenol in water pollutes owing to it to the high toxicity of aquatic life be difficult to biodegradation.Phenol content in all strict restriction environment in countries in the world.The maximum permissible concentration of volatile phenol is distributed as in China's regulation water body: drinking water 0.002mg/l, agricultural water 1.0mg/l, industrial wastewater discharge standard 0.5mg/l.This shows that the wastewater containing phenol source is wide, harm is big, standard is tight.How handling effectively and utilizing wastewater containing phenol is problem that has universal significance in the environmental pollution field.
At present, the adsorption technology based on the good absorption property of active carbon has a wide range of applications at organic wastewater and exhaust-gas treatment field.The adsorption capacity of active carbon is big, and high and low concentration waste water is all had removal effect preferably.But after in a single day the adsorption capacity of active carbon reaches capacity, just need handle so that utilize again it.Regeneration techniques commonly used is heat regeneration in the industry at present.In the hot regenerative process, the active carbon that adsorbs after saturated will be handled under 800-850 ℃ high temperature, and energy consumption is big; Simultaneously, high-temperature operation makes that the adsorption capacity loss late of active carbon is big, a charcoal absorption capacitance loss of every regeneration 5-15%; In addition, high-temperature operation also makes active carbon can not carry out in-situ regeneration, needs specific regenerating unit, thereby increases disposal cost and cause a certain amount of active carbon loss in transportation; At last, the pollutant of desorption also needs post processing, complex process in the heating process.
Summary of the invention
The object of the present invention is to provide a kind of active height, what the simple processing of technology contained phenol organic wastewater is absorption-catalyst and preparation method's and methods for using them of carrier with the active carbon.
It is active component that absorption-catalyst provided by the invention contains with transition metal Cu, with a kind of among K, Zn and the Ce is helper component, it is characterized in that it is carrier with the active carbon, the percentage by weight of its component is: Cu1%-10%, helper component 1%-5%, active carbon 85%-98%, and the surface area of active carbon is 500-1500m
2/ g.
Dry method catalyst for catalytic oxidation preparation method provided by the invention adopts the equal-volume co-impregnation, the nitrate mixed solution equal-volume of copper nitrate and K, Zn or Ce is total to the Immesion active carbon carrier, placed 2-6 hours in room temperature, then 50-100 ℃ of dryings 6-24 hours, calcined 2-6 hours under 200-500 ℃ of inert atmospheres at last, obtaining with the active carbon is the absorption-catalyst of carrier.
Dry method catalytic oxidation absorption-catalyst using method provided by the invention is in containing phenol organic wastewater by being the absorption-catalyst of carrier with the active carbon, and is dry at normal temperatures after absorption finishes, and feeds oxidizing gas, and air speed is 500-2000h
-1, be 200-350 ℃ in reaction temperature, reaction 1-3h, cycle applications afterwards.
The present invention has compared following advantage with prior art:
1. absorption-catalyst has the good adsorption performance.Can effectively adsorb poisonous and harmful compositions such as phenol in wastewater.
2. the catalytic oxidation mild condition is carried out under the low-temperature atmosphere-pressure, need not a large amount of water body heating pressurizations, energy consumption is low, occupation area of equipment is little, and is simple to operate, but in-situ catalytic oxidation, do not produce secondary pollution, it is not high to be particularly suitable for concentration of treatment, but toxicity is big, is unsuitable for the waste water of biochemical treatment, and the waste water of handling can reuse, has saved a large amount of water for industrial uses.
3. the adsorbed phenol initial temperature low activity height of absorbent charcoal based absorption-catalyst oxidation that supports of transition metal, the height that adsorption capacity is recovered behind the catalytic oxidation can use continuously, easily generates in batch on a large scale and uses, and cost is low.
Specific embodiment embodiment 1.
The Cu5Zn1/AC Preparation of catalysts:
The copper nitrate solution of getting 4.5g zinc nitrate adding 100ml0.78mol/l is mixed with dipping solution, is 800m with 100 grams, 40-60 order specific areas
2The activated carbon granule of/g is poured in the maceration extract and is stirred; room temperature was placed 4 hours; dried 6 hours down in 110 ℃; calcined 12 hours down in 300 ℃ of argon shields again; naturally cool to room temperature and make catalyst A, the weight of metal component is in the catalyst A: Cu5%, Zn1%; active carbon is 94%, is labeled as Cu5Zn1/AC.
The use of Cu5Zn1/AC absorption-catalyst:
The organic wastewater 50ml that will contain 500ppm phenol is by being equipped with the adsorption column of 0.5gCu5Zn1/AC absorption-catalyst, and absorption finishes the waste water that the back discharging is cleaned, the Cu5Zn1/AC absorption-catalyst of dry adsorbing phenol at normal temperatures; Give in the dried Cu5Zn1/AC absorption-catalyst and feed oxidizing gas (5% oxygen), air speed is 1000h
-1, and temperature risen to 300 ℃; 300 ℃ of following constant temperature catalytic oxidations 1.5 hours.Catalytic oxidation reduces the temperature to room temperature after finishing in oxidizing atmosphere;
Experimental result: the phenol in the waste water can get 100% removal, it is 100% phenol in the 500mg/l organic wastewater that Cu5Zn1/AC absorption-catalyst after the regeneration can adsorb the 50ml phenol concentration once more, online Mass Spectrometer Method repeatedly in the cyclic process pollutant catalyzing oxidizing degrading product be CO
2And H
2O.
Embodiment 2.
The Cu4Zn2/AC Preparation of catalysts:
The copper nitrate solution of getting 9g zinc nitrate adding 100ml 0.62mol/l is mixed with dipping solution, is 800m with 100 grams, 40-60 order specific areas
2The activated carbon granule of/g is poured in the maceration extract and is stirred; room temperature was placed 4 hours; dried 6 hours down in 110 ℃; calcined 12 hours down in 300 ℃ of argon shields again; naturally cool to room temperature and make catalyst B, the weight of metal component is in the catalyst B: Cu4%, Zn2%; active carbon is 94%, is labeled as Cu4Zn2/AC.
The use of Cu4Zn2/AC absorption-catalyst:
The organic wastewater 50ml that contains 1500ppm phenol is by being equipped with the adsorption column of 0.5gCu4Zn2/AC absorption-catalyst, and absorption finishes the waste water that the back discharging is cleaned, the Cu4Zn2/AC absorption-catalyst of dry adsorbing phenol at normal temperatures; Give in the dried Cu4Zn2/AC absorption-catalyst and feed oxidizing gas (5% oxygen), air speed is 1500h
-1, and temperature risen to 300 ℃; 300 ℃ of following constant temperature catalytic oxidations 2 hours.Catalytic oxidation reduces the temperature to room temperature after finishing in oxidizing atmosphere.
Experimental result: the phenol in the waste water can get 100% removal, it is 100% phenol in the 1000mg/l organic wastewater that Cu4Znl/AC absorption-catalyst after the regeneration can adsorb the 50ml phenol concentration once more, online Mass Spectrometer Method repeatedly in the cyclic process pollutant catalyzing oxidizing degrading product be CO
2And H
2O.
Embodiment 3
The Cu5Ce1/AC Preparation of catalysts:
The copper nitrate solution of getting 3.1g cerous nitrate adding 100ml 0.78mol/l is mixed with dipping solution, is 800m with 100 grams, 40-60 order specific areas
2The activated carbon granule of/g is poured in the maceration extract and is stirred; room temperature was placed 6 hours; dried 12 hours down in 110 ℃; calcined 24 hours down in 250 ℃ of argon shields again; naturally cool to room temperature and make catalyst C, the weight of metal component is among the catalyst C: Cu5%, Ce1%; active carbon is 94%, is labeled as Cu5Ce1/AC.
The use of Cu5Ce1/AC absorption-catalyst:
The organic wastewater 50ml that contains 1500ppm phenol is by being equipped with the adsorption column of 0.5gCu5Ce1/AC absorption-catalyst, and absorption finishes the waste water that the back discharging is cleaned, the Cu5Ce1/AC absorption-catalyst of dry adsorbing phenol at normal temperatures; Give in the dried Cu5Ce1/AC absorption-catalyst and feed oxidizing gas (5% oxygen), air speed is 1000h
-1, and temperature risen to 250 ℃; 250 ℃ of following constant temperature catalytic oxidations 1.5 hours.Catalytic oxidation reduces the temperature to room temperature after finishing in oxidizing atmosphere.
Experimental result: the phenol in the waste water can get 100% removal, it is 100% phenol in the 1000mg/l organic wastewater that Cu5Ce1/AC absorption-catalyst can adsorb the 50ml phenol concentration once more, online Mass Spectrometer Method repeatedly in the cyclic process pollutant catalyzing oxidizing degrading product be CO
2And H
2O.
Embodiment 4
The Cu1Ce5/AC Preparation of catalysts:
The copper nitrate solution of getting 15.5g cerous nitrate adding 100ml0.16mol/l is mixed with dipping solution, is 800m with 100 grams, 40-60 order specific areas
2The activated carbon granule of/g is poured in the maceration extract and is stirred; room temperature was placed 6 hours; dried 12 hours down in 110 ℃; calcined 24 hours down in 250 ℃ of argon shields again; naturally cool to room temperature and make catalyst D, the weight of metal component is among the catalyst D: Cu1%, Ce5%; active carbon is 94%, is labeled as Cu1Ce5/AC.
The use of Cu1Ce5/AC absorption-catalyst:
The organic wastewater 50ml that contains 500ppm phenol is by being equipped with the adsorption column of 0.5gCu1Ce5/AC absorption-catalyst, and absorption finishes the waste water that the back discharging is cleaned, the Cu1Ce5/AC absorption-catalyst of dry adsorbing phenol at normal temperatures; Give in the dried Cu1Ce5/AC absorption-catalyst and feed oxidizing gas (5% oxygen), air speed is 1000h
-1, and temperature risen to 250 ℃; 250 ℃ of following constant temperature catalytic oxidations 1.5 hours.Catalytic oxidation reduces the temperature to room temperature after finishing in oxidizing atmosphere.
Experimental result: the phenol in the waste water can get 100% removal, it is 100% phenol in the 500mg/l organic wastewater that Cu1Ce5/AC absorption-catalyst can adsorb the 50ml phenol concentration once more, online Mass Spectrometer Method repeatedly in the cyclic process pollutant catalyzing oxidizing degrading product be CO
2And H
2O.
Embodiment 5.
The Cu8K1/AC Preparation of catalysts:
The copper nitrate solution of getting 2.6g potassium nitrate adding 100ml1.25mol/l is mixed with dipping solution, is 1000m with 100 grams, 40-60 order specific areas
2The activated carbon granule of/g is poured in the maceration extract and is stirred; room temperature was placed 6 hours; dried 24 hours down in 110 ℃; calcined 12 hours down in argon shield again; naturally cool to room temperature and make catalyst E, the weight of metal component is among the catalyst E: Cu8%, K1%; active carbon is 91%, is labeled as Cu8K1/AC.
The use of Cu8K1/AC absorption-catalyst:
The organic wastewater 50ml that contains 500ppm phenol is by being equipped with the adsorption column of 0.5gCu8K1/AC absorption-catalyst, and absorption finishes the waste water that the back discharging is cleaned, the Cu8K1/AC absorption-catalyst of dry adsorbing phenol at normal temperatures; Give in the dried Cu8K1/AC absorption-catalyst and feed oxidizing gas (5% oxygen), air speed is 2000h
-1, and temperature risen to 300 ℃; 300 ℃ of following constant temperature catalytic oxidations 2 hours.Catalytic oxidation reduces the temperature to room temperature after finishing in oxidizing atmosphere.
Experimental result: the phenol in the waste water can get 100% removal, it is 100% phenol in the 500mg/l organic wastewater that Cu8K1/AC absorption-catalyst can adsorb the 50ml phenol concentration once more fully, online Mass Spectrometer Method repeatedly in the cyclic process pollutant catalyzing oxidizing degrading product be CO
2And H
2O.
Comparative Examples 1
The Cu5/AC Preparation of catalysts:
Getting the copper nitrate solution 100ml of 0.78mol/l, is 1000m with 100 grams, 40-60 order specific areas
2The activated carbon granule of/g is poured in the maceration extract and is stirred; room temperature was placed 4 hours; dried 6 hours down in 110 ℃; calcined 12 hours down in 250 ℃ of argon shields again; naturally cool to room temperature and make single component catalyst; the weight of metal component is in the catalyst: Cu5%, active carbon is 95%, is labeled as Cu5/AC.
The use of Cu5/AC absorption-catalyst:
The organic wastewater 50ml that contains 1500ppm phenol is by being equipped with the adsorption column of 0.5gCu5/AC absorption-catalyst, and absorption finishes the waste water that the back discharging is cleaned, the Cu5/AC absorption-catalyst of dry adsorbing phenol at normal temperatures; Give in the dried Cu5/AC absorption-catalyst and feed oxidizing gas (5% oxygen), air speed is 1000h
-1, and temperature risen to 250 ℃; 250 ℃ of following constant temperature catalytic oxidations 2 hours.Catalytic oxidation reduces the temperature to room temperature after finishing in oxidizing atmosphere.Experimental result: the phenol in the waste water can get 100% removal, it is 99.9% phenol in the 1000mg/l organic wastewater that regeneration back Cu5/AC absorption-catalyst can adsorb the 50ml phenol concentration once more, online Mass Spectrometer Method repeatedly in the cyclic process pollutant catalyzing oxidizing degrading product be mainly CO
2And H
2O has the effusion of phenol and benzene.
Comparative Examples 2
The Cu1/AC Preparation of catalysts:
Getting the copper nitrate solution 100ml of 0.16mol/l, is 1000m with 100 grams, 40-60 order specific areas
2The activated carbon granule of/g is poured in the maceration extract and is stirred; room temperature was placed 4 hours; dried 6 hours down in 110 ℃; calcined 12 hours down in 250 ℃ of argon shields again; naturally cool to room temperature and make single component catalyst; the weight of metal component is in the catalyst: Cu 1%, and active carbon is 99%, is labeled as Cu1/AC.
The use of Cu1/AC absorption-catalyst:
The organic wastewater 50ml that contains 1500ppm phenol is by being equipped with the adsorption column of 0.5gCu1/AC absorption-catalyst, and absorption finishes the waste water that the back discharging is cleaned, the Cu1/AC absorption-catalyst of dry adsorbing phenol at normal temperatures; Give in the dried Cu1/AC absorption-catalyst and feed oxidizing gas (5% oxygen), air speed is 1000h
-1, and temperature risen to 250 ℃; 250 ℃ of following constant temperature catalytic oxidations 2 hours.Catalytic oxidation reduces the temperature to room temperature after finishing in oxidizing atmosphere.Experimental result: the phenol in the waste water can get 100% removal, it is 99.9% phenol in the 1000mg/l organic wastewater that regeneration back Cu1/AC absorption-catalyst can adsorb the 50ml phenol concentration once more, online Mass Spectrometer Method repeatedly in the cyclic process pollutant catalyzing oxidizing degrading product be mainly phenol and benzene, a spot of CO is arranged
2And H
2O overflows.
Claims (3)
1, a kind of processing wastewater containing phenol absorption-catalyst is characterized in that with Cu being active component, and Ce is a helper component, with the active carbon is carrier, and its percentage by weight consists of: Cu 1%-10%, Ce 1%-5%, active carbon 85%-98%, and the surface area of active carbon is 500-1500m
2/ g.
2, a kind of according to claim 1 processing wastewater containing phenol absorption-method for preparing catalyst, it is characterized in that copper nitrate and cerous nitrate mixed solution equal-volume are total to the Immesion active carbon carrier, placed 2-6 hours in room temperature, then 50-100 ℃ of dryings 6-24 hours, calcined 2-6 hours under 200-500 ℃ of inert atmospheres at last, obtaining with the active carbon is the absorption-catalyst of carrier.
3, a kind of according to claim 1 processing wastewater containing phenol absorption-catalyst application process, it is characterized in that containing phenol organic wastewater by being the absorption-catalyst of carrier with the active carbon, after absorption finishes, dry at normal temperatures, feed oxidizing gas, air speed is 500-2000h
-1, be 200-350 ℃ in reaction temperature, reaction 1-3h, cycle applications afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101905706A CN101502804B (en) | 2005-12-21 | 2005-12-21 | Adsorption-catalyst for processing wastewater containing phenyl hydrate as well as production method and use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101905706A CN101502804B (en) | 2005-12-21 | 2005-12-21 | Adsorption-catalyst for processing wastewater containing phenyl hydrate as well as production method and use |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100482185A Division CN100528346C (en) | 2005-12-21 | 2005-12-21 | Adsorption-catalyst for treating phenol containing waste-water, preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101502804A true CN101502804A (en) | 2009-08-12 |
| CN101502804B CN101502804B (en) | 2010-12-15 |
Family
ID=40975255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101905706A Expired - Fee Related CN101502804B (en) | 2005-12-21 | 2005-12-21 | Adsorption-catalyst for processing wastewater containing phenyl hydrate as well as production method and use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101502804B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492433A (en) * | 2014-12-18 | 2015-04-08 | 太原科技大学 | Adsorption catalyst based on activated carbon felt base as well as preparation method and application of adsorption catalyst |
| CN110208061A (en) * | 2019-06-21 | 2019-09-06 | 辽宁石油化工大学 | Phenol and make to acquire the method that phenol is stabilized in a kind of quantitative collection water environment |
| CN110404521A (en) * | 2019-07-31 | 2019-11-05 | 西北大学 | The adsorbent and its preparation method and application of selective absorption methylene blue |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5063196A (en) * | 1989-06-23 | 1991-11-05 | Calgon Carbon Corporation | Chromium-free impregnated activated carbon for adsorption of toxic gases and/or vapors |
| CN1180986C (en) * | 2001-12-31 | 2004-12-22 | 中国科学院大连化学物理研究所 | Method of treating oil field waste water by electric-multiphase catalytic reaction and its special equipment |
| CN1287893C (en) * | 2003-12-11 | 2006-12-06 | 中国科学院山西煤炭化学研究所 | Method of regenerating activated charcoal for processing phenolic waste water |
-
2005
- 2005-12-21 CN CN2008101905706A patent/CN101502804B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492433A (en) * | 2014-12-18 | 2015-04-08 | 太原科技大学 | Adsorption catalyst based on activated carbon felt base as well as preparation method and application of adsorption catalyst |
| CN110208061A (en) * | 2019-06-21 | 2019-09-06 | 辽宁石油化工大学 | Phenol and make to acquire the method that phenol is stabilized in a kind of quantitative collection water environment |
| CN110404521A (en) * | 2019-07-31 | 2019-11-05 | 西北大学 | The adsorbent and its preparation method and application of selective absorption methylene blue |
| CN110404521B (en) * | 2019-07-31 | 2022-01-28 | 西北大学 | Adsorbent for selectively adsorbing methylene blue and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101502804B (en) | 2010-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100528346C (en) | Adsorption-catalyst for treating phenol containing waste-water, preparation method and application thereof | |
| CN102247746B (en) | Formaldehyde elimination agent and preparation method thereof | |
| CN102580525A (en) | Method for using activated carbon load copper oxide composite catalyst to absorb nitrogenous oxide | |
| CN102423688A (en) | Preparation method for walnut shell active carbon adsorbent for purifying low concentration phosphine | |
| CN100354041C (en) | Catalyst for treating benzene series organic waste-gas or waste-water by using low temp. and dry method, prepn. method and application thereof | |
| CN111229209B (en) | Lotus leaf source charcoal-loaded manganese oxide low-temperature SCR (selective catalytic reduction) flue gas denitration catalyst and preparation method and application thereof | |
| CN111229208B (en) | Lotus leaf-source biochar-loaded metal oxide low-temperature SCR (selective catalytic reduction) flue gas denitration catalyst and preparation method and application thereof | |
| CN104190358B (en) | NOx adsorber | |
| CN104492433A (en) | Adsorption catalyst based on activated carbon felt base as well as preparation method and application of adsorption catalyst | |
| CN101695651A (en) | Copper and iron-loaded modified activated carbon absorbent and method for preparing same | |
| CN102500362A (en) | Catalyst for removing H2S from gas by catalytic oxidation, preparation method and application | |
| CN111068666A (en) | Sepiolite supported noble metal formaldehyde room-temperature oxidation catalyst and preparation method thereof | |
| CN114259978A (en) | Preparation process of efficient coal-fired flue gas demercuration adsorbent and product thereof | |
| CN101502804B (en) | Adsorption-catalyst for processing wastewater containing phenyl hydrate as well as production method and use | |
| CN103736455A (en) | Copper-iron modified metal organic skeleton adsorbent and preparation method thereof | |
| CN105233866A (en) | Method for regenerating (RE/HZSM-5) catalysts for resolving methanethiol gas | |
| CN101264996B (en) | Method for treating aniline waste water by absorption-low temperature dry method | |
| CN1287893C (en) | Method of regenerating activated charcoal for processing phenolic waste water | |
| KR20090104774A (en) | Activated carbon catalyst | |
| CN107081169B (en) | Preparation method of renewable catalyst for efficiently catalytically decomposing methyl mercaptan | |
| CN106607005A (en) | Nitrogen-containing compound solid adsorbent and preparation method thereof | |
| CN108786802A (en) | A kind of room temperature purify the air of a room pollutant method for preparing catalyst and its application | |
| CN102824892B (en) | A kind of remove dioxin in waste gas generated by burning garbage adsorbent, preparation method and application thereof | |
| KR20100107765A (en) | Activated carbon for adsorption tower and the manufacturing method thereof | |
| KR101538000B1 (en) | The method of oxidizing hazardous compounds by the mixture containing manganese |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20131221 |