CN101028590A - Magnetic expanded graphite for absorbing greasy dirt in water area and its production - Google Patents
Magnetic expanded graphite for absorbing greasy dirt in water area and its production Download PDFInfo
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- CN101028590A CN101028590A CN 200710036814 CN200710036814A CN101028590A CN 101028590 A CN101028590 A CN 101028590A CN 200710036814 CN200710036814 CN 200710036814 CN 200710036814 A CN200710036814 A CN 200710036814A CN 101028590 A CN101028590 A CN 101028590A
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- expanded graphite
- magnetic
- ferrite
- water
- expandable graphite
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Abstract
A magnetic expanded graphite for adsorbing the oily sewage in a water region is prepared from expanded graphite particles as carrier through depositing a ferrite layer on their surfaces chemically or physically. After said magnetic expanded graphite particles are spread on the water surface in oil polluted region, a mixture system of magnetic expanded graphite and oily sewage is formed, and then can be collected under the action of magnetic field.
Description
Technical field
The invention belongs to oil pollution of waters control, administer technical field, be specifically related to a kind of absorption magnetic expandable graphite that is used for oil pollution of waters and preparation method thereof.
Background technology
In modern society, oil occupies extremely important status as the energy.Yet, in exploitation, processing, transportation and the use of oil, a considerable amount of Oil spills arranged, discard in rivers and maritime waters, environment is caused great threat.Administer the waters oil pollution and become the task of top priority.Removing oil pollution of waters dyes and is unusual difficulty.The improvement of oil pollution has chemical method and physical method in the world at present.
Chemical method:, adopt emulsification dispersion, oil-collecting or coagulate oily method improvement by pollution condition.To the oil film of thickness less than 1 millimeter, it is effective adopting chemical detergent cleaning water body greasy dirt to dye.Yet the medicine that chemical debridement methods consumption is a large amount of also may produce secondary pollution.
Physical method: comprise the oil fence, contamination removing ship and attached retracting device and oil absorption material.These methods are with the variation of sea situation and meteorological condition, and it is bigger to reclaim capacity variation, when condition of work is abominable, because the upheaval of the motion of ocean current, wave rises and falls, make the greasy dirt of water surface be easy to drift with the tide, and enlarge contaminated area.
Summary of the invention
The object of the present invention is to provide a kind of magnetic expandable graphite of adsorbing the waters oil contaminants and preparation method thereof that is used to.
The magnetic expandable graphite that is used to adsorb the waters oil contaminants that the present invention proposes, as carrier, ferrite layer is deposited on expanded graphite surface or inner, promptly obtains required magnetic expandable graphite with expanded graphite, wherein, expanded graphite and ferrite mass ratio are 1: 1～1: 5.
Among the present invention, described ferrite is meant spinel type ferrite or hexaplanar magneto-plumbite type ferrite (ferrite that obtains etc. mixes as nickel, cobalt, manganese, barium, strontium, zinc and above each elements compounding).
The present invention proposes is used to adsorb the preparation method of the magnetic expandable graphite of waters oil contaminants, can adopt chemical method or physical method.
Among the present invention, described chemical method be in coprecipitation, citrate sol-gel method or the sintering process etc. any.
Among the present invention, described physical method is adhesion process, mix in technology etc. any.
The present invention with the magnetic expandable graphite spreading that makes in the greasy dirt surface, can form magnetic expandable graphite-greasy dirt mixed system with greasy dirt, under the effect of magnetic field, thereby magnetic expandable graphite-fluid mixed system reaches oil pollution of waters control, administers purpose to the magnetic direction motion.
The chemical composition of expanded graphite is a carbon, can not cause secondary pollution to environment.After magnetic expandable graphite was adsorbed, collects simultaneously, through oil removal treatment, the basic no change of its magnetic properties still can be reused.The greasy dirt that adopts magnetic adsorptive material to administer water environment dyes sustainable development requirements such as meeting the ecological economy, recycling economy.Expanded graphite has the good adsorption ability to oils in the water, uses it for the processing aspect that greasy dirt dyes, and good effect is arranged, and can be applicable to the processing of oil spilling and the advanced treating of oily waste water.As a kind of novel oil absorption material, expanded graphite has better performance than Polyurethane and active carbon when handling oil slick and handle in the water micro oil.
The specific embodiment
Further specify the present invention below in conjunction with specific embodiment.
Embodiment 1: adopt the citrate gel sol gel process to prepare magnetic expandable graphite, its step is as follows:
1, makes ferrite with citric acid complex ferric nitrate, barium nitrate: Ba (NO in molar ratio
3)
2: Fe (NO
3)
3: citric acid=take by weighing raw material at 1: 12: 19, add dissolved in distilled water, splashing into ammoniacal liquor regulator solution pH value is 7, promptly gets required ferrite;
2, will add expanded graphite in step (1) the gained ferrite, control expanded graphite and ferrite mass ratio are 1: 5;
3. gained solution in the step (2) being placed 90 ℃ of stirred in water bath 4～5h, is the colloid shape of thickness to liquid;
4. place 120 ℃ baking oven to dry by the fire 4h the colloidal sol that obtains in the step (3), obtain desiccant gel;
5. step (4) gained gel is placed in the Muffle furnace and be heated to 850 ℃ with 60 ℃/h heating rate, cooling naturally promptly gets required magnetic expandable graphite behind the insulation 2h.
Embodiment 2: adopt coprecipitation to prepare magnetic expandable graphite, its step is as follows:
1, prepares FeCl respectively
36H
2O, FeCl
24H
2O, NaOH solution;
2, the FeCl that step (1) is prepared
36H
2O, FeCl
24H
2O solution is poured in the NaOH solution, adds expanded graphite, and expanded graphite and ferrite mass ratio are 1: 3, evenly is stirred to reaction and finishes under the temperature about 80 ℃;
3, the stirring liquid that step (2) is obtained neutralizes Fe with HCl
3O
4Precipitation is wrapped in the expanded graphite surface;
4, the product water that step (3) is obtained cleans, centrifuge separates, vacuum drying, promptly gets required expanded graphite.
Embodiment 3: adopt the adhesion process method to prepare magnetic expandable graphite, its step is as follows:
1, in 1: 1: 0.1 ratio (mass ratio) take by weighing (measuring) expanded graphite, ferrite powder and styrene-propene yogurt liquid respectively;
2, step (1) gained ferrite powder and even stirring of styrene-propene yogurt liquid are obtained mixture;
3, with after step (2) mixture coagulates, the sclerosis, pulverize, promptly get required magnetic expandable graphite through ball mill.
Claims (5)
1, a kind of magnetic expandable graphite that is used for adsorbing oil dirt on water, it is characterized in that: as carrier, ferrite layer is deposited on expanded graphite surface or inner, promptly obtains required magnetic expandable graphite with expanded graphite, wherein, expanded graphite and ferrite mass ratio are 1: 1～1: 5.
2, the magnetic expandable graphite that is used for adsorbing oil dirt on water according to claim 1 is characterized in that described ferrite is meant spinel type ferrite or hexaplanar magneto-plumbite type ferrite.
3, a kind of preparation method who is used for the magnetic expandable graphite of adsorbing oil dirt on water as claimed in claim 1 is characterized in that adopting chemical method or physical method that ferrite is deposited in expanded graphite surface or the internal pore structure.
4, according to the described preparation method who is used for the magnetic expandable graphite of adsorbing oil dirt on water of claim 3, it is characterized in that chemical method be in coprecipitation, citrate sol-gel method or the sintering process any.
5,, it is characterized in that physical method is adhesion process or mixes in the technology any according to the described preparation method who is used for the magnetic expandable graphite of adsorbing oil dirt on water of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710036814 CN101028590A (en) | 2007-01-25 | 2007-01-25 | Magnetic expanded graphite for absorbing greasy dirt in water area and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710036814 CN101028590A (en) | 2007-01-25 | 2007-01-25 | Magnetic expanded graphite for absorbing greasy dirt in water area and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101028590A true CN101028590A (en) | 2007-09-05 |
Family
ID=38714248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710036814 Pending CN101028590A (en) | 2007-01-25 | 2007-01-25 | Magnetic expanded graphite for absorbing greasy dirt in water area and its production |
Country Status (1)
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962230A (en) * | 2010-10-08 | 2011-02-02 | 同济大学 | Method for preparing biological expanded graphite for in-situ repair of petroleum polluted water body |
| CN102240537A (en) * | 2011-06-28 | 2011-11-16 | 中国科学技术大学 | Method for preparing organic dye absorbent |
| CN103055815A (en) * | 2013-01-23 | 2013-04-24 | 浙江师范大学 | Magnetically separable ferrite/expanded graphite wastewater treating agent as well as preparation method and application |
| CN103127909A (en) * | 2013-03-06 | 2013-06-05 | 四川农业大学 | Preparation method of strong magnetism expanded graphite and application thereof |
| CN103372417A (en) * | 2012-04-28 | 2013-10-30 | 夏华松 | Environment-friendly magnetic expanded graphite and preparation method thereof |
| CN103506083A (en) * | 2012-06-29 | 2014-01-15 | 中原工学院 | Preparation method of hemp fiber/expanded graphite composite fiber adsorbing material |
| CN103506095A (en) * | 2012-06-29 | 2014-01-15 | 中原工学院 | Preparation method of kendir fiber/expanded graphite composite fiber adsorbing material |
| CN104258819A (en) * | 2014-09-17 | 2015-01-07 | 上海大学 | Preparation method of magnetic grapefruit peel oil absorption material |
| CN105463543A (en) * | 2015-12-04 | 2016-04-06 | 北京化工大学 | Preparing method and application of zinc/expanded graphite composite |
| CN106732453A (en) * | 2016-12-12 | 2017-05-31 | 墨宝股份有限公司 | A kind of adsorption composite material of magnetic expansion and preparation method thereof |
| CN110980724A (en) * | 2019-12-31 | 2020-04-10 | 东华大学 | Magnetic graphite oxide and preparation method and application thereof |
-
2007
- 2007-01-25 CN CN 200710036814 patent/CN101028590A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962230B (en) * | 2010-10-08 | 2012-02-29 | 同济大学 | Method for preparing biological expanded graphite for in-situ repair of petroleum polluted water body |
| CN101962230A (en) * | 2010-10-08 | 2011-02-02 | 同济大学 | Method for preparing biological expanded graphite for in-situ repair of petroleum polluted water body |
| CN102240537A (en) * | 2011-06-28 | 2011-11-16 | 中国科学技术大学 | Method for preparing organic dye absorbent |
| CN103372417A (en) * | 2012-04-28 | 2013-10-30 | 夏华松 | Environment-friendly magnetic expanded graphite and preparation method thereof |
| CN103506083B (en) * | 2012-06-29 | 2015-12-09 | 中原工学院 | The preparation method of a kind of hemp/expanded graphite composite fibre sorbing material |
| CN103506083A (en) * | 2012-06-29 | 2014-01-15 | 中原工学院 | Preparation method of hemp fiber/expanded graphite composite fiber adsorbing material |
| CN103506095A (en) * | 2012-06-29 | 2014-01-15 | 中原工学院 | Preparation method of kendir fiber/expanded graphite composite fiber adsorbing material |
| CN103055815A (en) * | 2013-01-23 | 2013-04-24 | 浙江师范大学 | Magnetically separable ferrite/expanded graphite wastewater treating agent as well as preparation method and application |
| CN103055815B (en) * | 2013-01-23 | 2016-08-03 | 浙江师范大学 | One can Magneto separate ferrite/expanded graphite waste water treating agent and preparation method and application |
| CN103127909A (en) * | 2013-03-06 | 2013-06-05 | 四川农业大学 | Preparation method of strong magnetism expanded graphite and application thereof |
| CN104258819A (en) * | 2014-09-17 | 2015-01-07 | 上海大学 | Preparation method of magnetic grapefruit peel oil absorption material |
| CN105463543A (en) * | 2015-12-04 | 2016-04-06 | 北京化工大学 | Preparing method and application of zinc/expanded graphite composite |
| CN106732453A (en) * | 2016-12-12 | 2017-05-31 | 墨宝股份有限公司 | A kind of adsorption composite material of magnetic expansion and preparation method thereof |
| CN110980724A (en) * | 2019-12-31 | 2020-04-10 | 东华大学 | Magnetic graphite oxide and preparation method and application thereof |
| CN110980724B (en) * | 2019-12-31 | 2022-11-25 | 东华大学 | Magnetic graphite oxide and preparation method and application thereof |
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