CN106925222A - Hydrogen peroxide cooperates with raising charcoal oxy radical technique with ultraviolet irradiation - Google Patents
Hydrogen peroxide cooperates with raising charcoal oxy radical technique with ultraviolet irradiation Download PDFInfo
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- CN106925222A CN106925222A CN201710290605.2A CN201710290605A CN106925222A CN 106925222 A CN106925222 A CN 106925222A CN 201710290605 A CN201710290605 A CN 201710290605A CN 106925222 A CN106925222 A CN 106925222A
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- hydrogen peroxide
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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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- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
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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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3204—Inorganic carriers, supports or substrates
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Abstract
The present invention relates to the technique that a kind of hydrogen peroxide and ultraviolet irradiation collaboration improve biological carbon materials oxy radical, it is characterized mainly in that：With hydrogen peroxide dipping after biological carbon materials sieving, the clean drying that will prepare, filtered after magnetic agitation, keep biology carbon surface still to remain with hydrogen peroxide presence.Then biological carbon materials are divided on temperature controlled electric heating plate, ultraviolet radioactive light irradiation in 10 380 nm wave-length coverages, charcoal temperature is kept in irradiation process at 200 DEG C, irradiation time is 24 h, and every 12 h stirs charcoal 1 time, and hydrogen peroxide of spraying again, keep biological carbon surface to there is atomizing hydrogen peroxide all the time.After ultraviolet irradiation terminates, drying.The technique can significantly improve the oxy radical quantity of biological carbon materials.
Description
Technical field
The invention belongs to biological carbon materials technical field of modification, it is related to a kind of hydrogen peroxide and ultraviolet irradiation collaboration to improve biological
The technique of charcoal oxy radical.
Background technology
In recent years, charcoal is used as a kind of New Types of Environmental Materials, because with preparing wide material sources, low production cost, right
The characteristics of contaminant removal capacity is strong, as the powerful mean in the prevention and cure of pollution of soil, water body and non-air ambient medium.As
A kind of and completely different material of activated carbon, activated carbon relies primarily on huge specific surface area and physical absorption is produced to pollutant, raw
The chemical functional group that thing charcoal relies primarily on its surface of distribution forms new chemical bond with pollutant, so as to produce pollutant removal to imitate
Really, and between this chemical functional group and pollutant the chemical bond for being formed is sufficiently stable, therefore, charcoal is to pollutant
Removal effect it is more stable.Substantial amounts of research confirms, to the chemical function of the height of contaminant removal capacity and biological carbon materials
Group, especially oxy radical（Carboxyl, lactone group, phenolic hydroxyl group）Quantity is related.However, non-modified biological carbon materials table
Face oxy radical negligible amounts, this turns into restriction factor of the restriction charcoal in pollutant prevention and control application, therefore, improve biological
Charcoal oxy radical quantity turns into technical problem urgently to be resolved hurrily.
Forefathers attempt being modified Carbon Materials treatment with wet chemical, so as to increase the organo-functional group number of material surface
Amount.Chinese application number 201110409394.2 discloses one kind diazo reagent treatment activated carbon, so as in activated carbon surface
Fixed nitrogen-containing functional group.The method introduces outer source ion in generating process, and production cost is high.Chinese application number
201380042335.3 disclose a kind of method for increasing surface alkalinty functional group to improve activated carbon hydrophily, but the method
Tedious process, it is many using chemical reagent, easily produce secondary pollution problem.Obviously, in order to obtain more oxy radicals, it is necessary to seek
Look for other technological break-throughs.Non-patent literature 1 and 2（[1] Ding Wenchuan, Quan Guoqing, Zeng Xiaolan, Luo Wanshen, Li Xiaoyu, Li Qiao, harmony
Firm ultraviolet irradiations are introduced into influence [J] the ACTA Scientiae Circumstantiaes of oxygen-containing functional group to benzene in charcoal adsorbed gas and water,
2017,(02):657-663. [2] Li Qiao, Yong Yi, Ding Wenchuan, Hou Jiang, Gao Yutao, Zeng Xiaolan ultraviolet radiation modified charcoals of
To Dynamic Adsorption [J] environmental sciences of VOCs, 2016, (06):2065-2072.）Report biological carbon materials are ultraviolet in 365 nm
After light irradiation, oxy radical quantity can be significantly improved.Meanwhile, also there are some researches prove hydrogen peroxide can significantly improve oxygen-containing group
Group's quantity.Therefore, it can, using hydrogen peroxide and ultraviolet irradiation collaboration treatment charcoal, increase biological carbon materials oxy radical number
Amount.
We have invented a kind of aftertreatment technology that biological carbon materials are carried out with hydrogen peroxide and ultraviolet irradiation collaboration treatment, should
Technique obtain biological carbon materials oxy radical quantity, be significantly higher than independent dioxygen water process or independent ultraviolet irradiation treatment and
Unmodified treatment.Present invention process operation is simple, and processing procedure pollutes without chemical reagent, with low cost, and substantially, technique is easy for effect
In large-scale promotion.
The content of the invention
The purpose of the present invention is by hydrogen peroxide and the combined modified effect of ultraviolet, there is provided one kind improves biological carbon materials table
The technique of face oxy radical content.
Hydrogen peroxide of the invention cooperates with raising charcoal oxy radical technique with ultraviolet, comprises the following steps.
（1）The biological carbon materials that will be prepared cross 60 mesh sieves, clean and use after drying hydrogen peroxide dipping, wherein hydrogen peroxide and make
It is 30% with concentration, the concentration of charcoal is 1%-20%（w/v）.
（2）The mixture of charcoal and hydrogen peroxide is heated up to 40-80 DEG C, the magnetic agitation 3-36 under 200 rpm rotating speeds
H, filtering keeps biological carbon surface still to remain with hydrogen peroxide presence, if surface has dried, need to be by the hydrogen peroxide of 30% concentration again
It is sprayed to biological carbon surface.
（3）Biological carbon materials are divided on temperature controlled electric heating plate, thickness control is heated up to 100-500 within 3 mm
DEG C scope.
（4）At the cm of biological carbon materials vertical direction 50, ultraviolet radiation lamp, ultraviolet radioactive main spectral line wave-length coverage are placed
It is 10-380 nm, radiant power 4-150 w, irradiation time is 12-48 h, and in irradiation process, charcoal is stirred 1 by every 12 h
It is secondary, and hydrogen peroxide of spraying again, keep biological carbon surface to there is atomizing hydrogen peroxide all the time.
（5）After ultraviolet irradiation terminates, biological carbon materials are collected into kraft paper bag, 60 DEG C dry to constant weight in baking oven
Afterwards, that is, oxy radical charcoal high is obtained.
Signified biological carbon materials of the invention are with mineral（Coal, graphite）, plant residue（Trunk, branches and leaves, fruit, straw
Stalk）And debirs（Sludge, plastics, discarded paper）It is raw material, the stable armaticity prepared by low temperature pyrolysis technology is consolidated
Body.
Charcoal and the use ratio of hydrogen peroxide are 1%-20% in the present invention（w/v）, it is preferably in a proportion of 5%-20%（w/v）,
Most preferred ratio is 10%.
Charcoal and 40-80 DEG C of hydrogen peroxide blend temperature range, most preferably preferably 60-80 DEG C, 60 DEG C, magnetic in the present invention
The time range of power stirring is 3-36 h, most preferably preferably 12-36 h, 24 h.
The temperature range of temperature controlled electric heating plate is controlled at 100-500 DEG C in the present invention, preferably 100-300 DEG C, most preferably
200℃。
In the present invention ultraviolet radioactive main spectral line wave-length coverage be 10-380 nm, preferably 150--380 nm, most preferably
254 nm。
Ultraviolet radiation lamp power bracket is 4-150 w, most preferably preferably 50-150 w, 100 w in the present invention.
Time of ultraviolet irradiation scope is 12-48 h, most preferably preferably 12-24 h, 24 h in the present invention.
Know-why of the invention is that hydrogen peroxide oxidation effect and the grafting of ultraviolet light are acted on.First, hydrogen peroxide can be with oxygen
Surface group in metaplasia thing carbon surface and internal voids, increases carboxyl acidic-group in biological carbon materials surface and internal voids
Quantity.Secondly, the cardinal principle of ultraviolet radiation graft method is radical polymerization mechanism, is mainly existed using ultraviolet light-initiated monomer
Biological carbon surface carries out glycerol polymerization, so as to cause these polarity oxy radical quantity increase of carboxyl, hydroxyl, lactone group.In addition,
Hydrogen peroxide can also form hydroxyl radical free radical under ultraviolet light, and the oxidability of hydroxyl radical free radical is extremely strong, can increase life
Thing carbon surface is aoxidized, and forms more oxy radicals.
Compared with prior art, the present invention has the advantages that.
（1）What the present invention was used only uses hydrogen peroxide, without other chemical reagent are used, will not be introduced to biological carbon materials
External source ionic soil.
（2）Processing cost of the present invention is cheap, easy to operate, safe and reliable without large scale equipment auxiliary, proper scaleization behaviour
Make.
（3）The hydrogen peroxide and ultraviolet that the present invention is used are generally acknowledged green oxidation technology, and technique does not produce secondary pollution,
Technological means green is friendly.
（4）Compared with hydrogen peroxide being used alone or ultraviolet irradiation is used alone, the present invention utilizes hydrogen peroxide and ultraviolet irradiation
Biological carbon materials oxy radical prepared by collaboration treatment is significantly improved.
（5）The uv photo initiated grafting glycerol polymerization chain to be formed that is modified is bonded with biological carbon materials surface chemistry and connects, and can stablize and continue
The oxy radical that holding surface graft modification is obtained.
Brief description of the drawings
Fig. 1 is oxy radical quantity in embodiment 1, embodiment 2, reference examples 1, reference examples 2 and untreated biological carbon materials
In comparing.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
The biological carbon materials that will be prepared cross 60 mesh sieves, and hydrogen peroxide dipping is used after cleaning drying, and the concentration of hydrogen peroxide is
30%, the concentration of charcoal is 10%（w/v）.The mixture of charcoal and hydrogen peroxide is heated up to 60 DEG C, under 200 rpm rotating speeds
The h of magnetic agitation 24, filtering keeps biological carbon surface still to remain with hydrogen peroxide presence.If surface has dried, need to be by 30% concentration
Hydrogen peroxide is sprayed to biological carbon surface again.Biological carbon materials are divided on temperature controlled electric heating plate, thickness control 3 mm with
It is interior, it is heated up to 200 DEG C.At the cm of biological carbon materials vertical direction 50, ultraviolet radiation lamp, ultraviolet radioactive main spectral line wavelength are placed
Scope is 254 nm, and radiant power 100w, irradiation time is 24 h.In irradiation process, every 12 h stirs charcoal 1 time, and
Spray again hydrogen peroxide, keep biological carbon surface to there is atomizing hydrogen peroxide all the time.After ultraviolet irradiation terminates, biological carbon materials are received
Collection in kraft paper bag, in baking oven 60 DEG C dry to constant weight after, that is, oxy radical charcoal high is obtained.
Embodiment 2
The biological carbon materials that will be prepared cross 60 mesh sieves, and hydrogen peroxide dipping is used after cleaning drying, and the concentration of hydrogen peroxide is
30%, the concentration of charcoal is 20%（w/v）.The mixture of charcoal and hydrogen peroxide is heated up to 40 DEG C, under 200 rpm rotating speeds
The h of magnetic agitation 12, filtering keeps biological carbon surface still to remain with hydrogen peroxide presence.If surface has dried, need to be by 30% concentration
Hydrogen peroxide is sprayed to biological carbon surface again.Biological carbon materials are divided on temperature controlled electric heating plate, thickness control 3 mm with
It is interior, it is heated up to 200 DEG C.At the cm of biological carbon materials vertical direction 50, ultraviolet radiation lamp, ultraviolet radioactive main spectral line wavelength are placed
Scope is 185 nm, and the w of radiant power 100, irradiation time is 36 h.In irradiation process, every 12 h stirs charcoal 1 time, and
Spray again hydrogen peroxide, keep biological carbon surface to there is atomizing hydrogen peroxide all the time.After ultraviolet irradiation terminates, biological carbon materials are received
Collection in kraft paper bag, in baking oven 60 DEG C dry to constant weight after, that is, oxy radical charcoal high is obtained.
Comparative example 1
The biological carbon materials that will be prepared cross 60 mesh sieves, and hydrogen peroxide dipping is used after cleaning drying, and the concentration of hydrogen peroxide is
30%, the concentration of charcoal is 10%（w/v）.The mixture of charcoal and hydrogen peroxide is heated up to 60 DEG C, under 200 rpm rotating speeds
The h of magnetic agitation 24, filtration drying.
Comparative example 2
At the cm of biological carbon materials vertical direction 50, ultraviolet radiation lamp is placed, ultraviolet radioactive main spectral line wave-length coverage is 254 nm,
Radiant power 100w, irradiation time is 24 h.In irradiation process, every 12 h stirs charcoal 1 time.After ultraviolet irradiation terminates,
Biological carbon materials are collected into kraft paper bag, dry for standby.
Analysis comparative example 1（Independent dioxygen water process）, comparative example 2（Independent ultraviolet irradiation）, untreated and embodiment 1
With the oxy radical result of biological carbon materials in embodiment 2（Fig. 1）, it can be observed that, using hydrogen peroxide and ultraviolet irradiation
After collaboration improves charcoal oxy radical technique, carboxyl, lactone group, phenolic hydroxyl group and total oxy radical quantity all substantially increase,
Higher than comparative example 1（Independent dioxygen water process）, comparative example 2（Independent ultraviolet irradiation）, untreated and embodiment 1 and embodiment 2.
This shows that the present invention can effectively improve biological carbon materials oxy radical quantity.
Although example of the invention is described in detail, for practical operation personnel, it is possible to understand that do not departing from
Under principle of the invention and spirit various changes, modification can be carried out to example.
Claims (6)
1. hydrogen peroxide cooperates with raising biological carbon materials oxy radical technique with ultraviolet irradiation, is characterized mainly in that：By what is prepared
Hydrogen peroxide dipping is used after biological carbon materials sieving, clean drying, is filtered after magnetic agitation, keep biology carbon surface still to remain with double
Oxygen water is present, and then divides on temperature controlled electric heating plate biological carbon materials, the ultraviolet radioactive in 10-380 nm wave-length coverages
Light irradiation, keeps charcoal temperature at 200 DEG C in irradiation process, irradiation time is 24 h, and period, every 12 h stirs charcoal
1 time, and hydrogen peroxide of spraying again, keep biological carbon surface to there is atomizing hydrogen peroxide all the time, after ultraviolet irradiation terminates, drying is
Can.
2. according to claim 1,40-80 DEG C of charcoal and hydrogen peroxide blend temperature range, preferably 60-80 DEG C, most preferably
It it is 60 DEG C, the time range of magnetic agitation is 3-36 h, most preferably preferably 12-36 h, 24 h.
3. according to claim 1, the temperature range of temperature controlled electric heating plate is controlled at 100-500 DEG C, preferably 100-300 DEG C,
Most preferably 200 DEG C.
4. according to claim 1, ultraviolet radioactive main spectral line wave-length coverage be 10-380 nm, preferably 150--380 nm,
Most preferably 254 nm.
5. according to claim 1, ultraviolet radiation lamp power bracket be 4-150 w, preferably 50-150 w, most preferably
100 w。
6. according to claim 1, time of ultraviolet irradiation scope is 12-48 h, most preferably preferably 12-24 h, 24 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290605.2A CN106925222A (en) | 2017-04-28 | 2017-04-28 | Hydrogen peroxide cooperates with raising charcoal oxy radical technique with ultraviolet irradiation |
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| CN201710290605.2A CN106925222A (en) | 2017-04-28 | 2017-04-28 | Hydrogen peroxide cooperates with raising charcoal oxy radical technique with ultraviolet irradiation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107573161A (en) * | 2017-09-20 | 2018-01-12 | 界首市家丰家庭农场 | A kind of preparation method of charcoal base inhibition composite fertilizer |
| CN109772875A (en) * | 2019-01-08 | 2019-05-21 | 浙江省农业科学院 | A kind of method of soil improvement |
| CN109926023A (en) * | 2019-04-09 | 2019-06-25 | 安徽科技学院 | Ozone cooperates with ultraviolet light irradiation and improves charcoal oxygen-containing group technique |
| CN110327882A (en) * | 2019-07-11 | 2019-10-15 | 江西省科学院 | The preparation method and application of multidigit activation and modified reed-south reed charcoal |
| CN110773128A (en) * | 2019-11-29 | 2020-02-11 | 中国电建集团成都勘测设计研究院有限公司 | Photo-thermal synergistic modification method of biomass charcoal |
| CN111349445A (en) * | 2020-04-02 | 2020-06-30 | 汤彪 | Slow-release repairing agent for soil pollution and preparation method thereof |
-
2017
- 2017-04-28 CN CN201710290605.2A patent/CN106925222A/en active Pending
Non-Patent Citations (2)
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| 丁文川等: "紫外辐照引入含氧官能团对生物炭吸附气体和水中苯的影响", 《环境科学学报》 * |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107573161A (en) * | 2017-09-20 | 2018-01-12 | 界首市家丰家庭农场 | A kind of preparation method of charcoal base inhibition composite fertilizer |
| CN109772875A (en) * | 2019-01-08 | 2019-05-21 | 浙江省农业科学院 | A kind of method of soil improvement |
| CN109926023A (en) * | 2019-04-09 | 2019-06-25 | 安徽科技学院 | Ozone cooperates with ultraviolet light irradiation and improves charcoal oxygen-containing group technique |
| CN110327882A (en) * | 2019-07-11 | 2019-10-15 | 江西省科学院 | The preparation method and application of multidigit activation and modified reed-south reed charcoal |
| CN110327882B (en) * | 2019-07-11 | 2020-03-27 | 江西省科学院 | Preparation method and application of multiposition activated and modified reed-triarrhena sacchariflora biochar |
| CN110773128A (en) * | 2019-11-29 | 2020-02-11 | 中国电建集团成都勘测设计研究院有限公司 | Photo-thermal synergistic modification method of biomass charcoal |
| CN111349445A (en) * | 2020-04-02 | 2020-06-30 | 汤彪 | Slow-release repairing agent for soil pollution and preparation method thereof |
| CN111349445B (en) * | 2020-04-02 | 2021-07-09 | 山东省神农生态科技股份有限公司 | Slow-release repairing agent for soil pollution and preparation method thereof |
| CN113372919A (en) * | 2020-04-02 | 2021-09-10 | 汤彪 | Slow-release repairing agent for soil pollution |
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Application publication date: 20170707 |