CN1500736A - Preparing Method for magnetic active carbon used for water treatment - Google Patents
Preparing Method for magnetic active carbon used for water treatment Download PDFInfo
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- CN1500736A CN1500736A CNA02149357XA CN02149357A CN1500736A CN 1500736 A CN1500736 A CN 1500736A CN A02149357X A CNA02149357X A CN A02149357XA CN 02149357 A CN02149357 A CN 02149357A CN 1500736 A CN1500736 A CN 1500736A
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Abstract
The present invention provides the preparation process of magnetic active carbon and belongs to the field of water processing technology. The magnetic active carbon has relatively great specific surface area and excellent adsorption performance, and is easy to separate magnetically to recover. The present invention provides the application of magnetic active carbon in water processing to eliminate organic matter and inorganic arsenic.
Description
The present invention relates to a kind of be used for water treatment, have than bigger serface and good adsorption properties, be easy to preparation method with the convenient tool magnetic active carbon that reclaims of magnetism separate method.
Powdered carbon is because granularity is little, pore structure is flourishing, has huge specific surface area, has fast, the capacity advantages of higher of rate of adsorption when being used as sorbing material, and powdered carbon preparation technology is comparatively simple, raw material sources are extensive, price is relatively low, so be widely used in fields such as chemical industry, environmental protection; In water treatment, can be used for removing the organic or inorganic pollutent in the water.
But the granularity just because of powdery carbon is little, makes it be difficult to Separation and Recovery in water treatment applications, causes the wasting of resources and secondary pollution easily, influences treatment effect, increases running cost, makes its application be subjected to very big restriction.For addressing this problem, give magnetic with gac, carrying out Separation and Recovery with magnetism separate method is a kind of simple and feasible method.But the magnetic charcoal of preparation all is with Fe at present
3O
4Fe for magneticsubstance
3O
4--the gac mixture, its preparation will be a raw material with ferrous salt, and ferrous very unstable, easily by the dioxygen oxidation in the air or in the water, so at Fe
3O
4--severe reaction conditions in the preparation process of gac mixture is difficult for accurately control.And Fe
3O
4But itself stablizes oxidation by air inadequately, and its magnetic is weakened gradually.
The present invention seeks to, provide be easy to prepare, the MnFe of stable performance
2O
4, CuFe
2O
4As magneticsubstance, preparation magnetic adsorbent MFe
2O
4--gac mixture (M=Mn, method Cu), and the application of this sorbent material in water treatment.MnFe
2O
4, Cu Fe
2O
4Itself as sorbent material many organism and inorganics are had very strong adsorptive power, the magnetic adsorbent that forms with the compound back of gac has more excellent performance.
The concrete grammar that the present invention prepares magnetic active carbon is: vitriol, hydrochloride or nitrate with Mn (or Cu) and Fe are raw material, and being made into mol ratio is Mn (or Cu): Fe=1: 2 solution, add gac, and stir, dripping alkali liquid is to pH6-11 simultaneously.Continue to stir 30-60 minute, and placed then that 90-100 ℃ of water-bath left standstill, ageing 1-4 hour.Outwell upper water solution, water (preferably deionized water) repetitive scrubbing carries out solid-liquid separation with magnetic separation or filter method, until washing neutrality; Or earlier be transferred to neutrality with sour, alkali, wash with water again to no negatively charged ion and detect.Above-mentioned gained solid adsorbent 50-60 ℃ of following low temperature baking 1-3 hour, is removed most of moisture content, be warmed up to 120 ℃ of bakings 8-24 hour again.Or at 120 ℃ of bakings 1-2 hour, N again
2Protection in 400-500 ℃ of heating 1-2 hour, promptly obtains the magnetic active carbon sorbent material down.
Copper involved in the present invention, manganese, molysite can be can be water-soluble, can sedimentary any corresponding salt by alkali, comprise vitriol, hydrochloride, nitrate, acetate etc.
The used alkali of adjust pH of the present invention comprises sodium hydroxide, potassium hydroxide, ammoniacal liquor, yellow soda ash, salt of wormwood etc.And last pH value should transfer to 6-11, best 8-10, otherwise will influence the magnetic of sorbent material.
The used gac of the present invention can be wooden, coconut husk, ature of coal or other material powdery that make, any aperture, granular or activated carbon fiber, wherein preferred mesopore or the powdered activated carbon of macropore.
In the magnetic active carbon that the present invention makes,, can obtain to contain magneticsubstance MnFe according to adding amounts of activated carbon
2O
4Or Cu Fe
2O
4Weight percent be 10-50%, gac 90%-50%.Magneticsubstance is many more, and then magnetic response performance is good more, and the easy more magnetic that carries out separates; And gac is many more, and then adsorptive power is strong more.
The prepared magnetic active carbon of the present invention has good magnetic responsiveness, can separate, reclaim with magnetism separate method; Also have huge surface-area, the organic or inorganic pollutent is had good adsorption property, can be used for feeding water or the purifying treatment of sewage.
Characteristics of the present invention are, preparation technology is simple, and prepared magnetic active carbon has that rate of adsorption is fast, capacity big, be easy to advantage such as recoverys, has the purification of water quality usefulness of excellence.
Embodiment
The preparation of example 1, magnetic active carbon powder: get 0.01mol MnSO
4With 0.02mol Fe (NO
3)
3, be dissolved in the 150ml water, add 5g wood activated charcoal (100-200 order, BET specific surface area 750m
2/ g), stirring fast and dripping concentration down is the NaOH solution of 4mol/l, until H=8-10.Continuation was stirred 30 minutes, moved to then to heat in the water-bath to switch to 90-100 ℃, left standstill, is incubated 2 hours.Ageing through 2 hours, the existing magnetic response preferably of gained compound adsorbent this moment, the top big water gaging that inclines adds the 200ml deionized water again, stirs, washing 10 minutes, carry out solid-liquid separation with magnetic separation or filter method, solid adsorbent continues to add deionized water wash 3-4 time, isolate sorbent material after, be placed in the baking oven in 50-60 ℃ of baking 2 hours down, be warming up to 120 ℃ of bakings 24 hours again, promptly get the magnetic active carbon powder.Wherein contain MnFe
2O
430%, BET specific surface area 500-600m
2/ g.
Example 2, contain 30%CuFe
2O
4The preparation of magnetic active carbon powder: with CuSO
45H
2O replaces MnSO
4, other operation is the same; When heat, adopt N
2Protection can obtain target compound, BET specific surface area 500-600m in 2 hours 450 ℃ of bakings down
2/ g.
The application in wastewater treatment of example 3, magnetic active carbon: certain waste water from dyestuff, mainly contain Acid Red B 200mg/l, H5.2 gets 1 liter of waste water, adds 5g and contains MnFe
2O
425% magnetic active carbon powder sorbent material mixes and carries out the magnetic separation after 30 minutes, records water outlet Acid Red B concentration less than 5mg/l.Sorbent material can recycle after heating rises again.
Example 4, certain arsenic-containing waste water contain arsenic (V) 10mg/l, and H5.2 gets 1 liter of waste water, add 5g and contain CuFe
2O
430% magnetic active carbon powder sorbent material mixes and carries out the magnetic separation after 60 minutes, and the concentration that records water outlet arsenic is less than 10 μ g/l.
Claims (8)
1, a kind ofly has, is easy to the preparation of the convenient magnetic active carbon that reclaims of magnetism separate method and the application method in water treatment thereof than bigger serface and good adsorption properties.
2, described according to claim 1, it is characterized in that prepared magnetic active carbon is MnFe
2O
4Or Cu Fe
2O
4With the mixture of gac, particularly with the mixture of powdered carbon.
3, described according to claim 2, it is characterized in that Mn Fe
2O
4Or Cu Fe
2O
4With the mixture of gac be with the corresponding metal salts solution with after gac mixes, add the alkali neutralization, get through ageing, washing, oven dry again.
4, described according to claim 3, it is characterized in that, used metal-salt be the vitriol, hydrochloride, nitrate, acetate of copper, manganese, iron etc. can be water-soluble, can sedimentary any corresponding salt by alkali.
5, described according to claim 3, it is characterized in that, transfer the used alkali of pH value to comprise sodium hydroxide, potassium hydroxide, ammoniacal liquor, yellow soda ash, salt of wormwood.
6, described according to claim 3, it is characterized in that mixed solution is neutralized to PH6-11, preferably 8-10; 90-100 ℃ of ageing bath temperature, time 1-4 hour; Bake out temperature 50-60 ℃ of following low temperature baking 1-3 hour, is removed most of moisture content earlier then, is warmed up to 120 ℃ of bakings 8-24 hour again; Or 120 ℃ of bakings 1-2 hour, the N2 protection was heated 1-2 hour in 400-500 ℃ down again.
7, described according to claim 1, it is characterized in that prepared magnetic adsorbent can be removed inorganicss such as organism in the water and arsenic, chromium, cadmium.
8, described according to claim 7, it is characterized in that prepared magnetic adsorbent can separate, reclaim with after the water that contains pollutent mixes with magnetism separate method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02149357 CN1234451C (en) | 2002-11-13 | 2002-11-13 | Preparing Method for magnetic active carbon used for water treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02149357 CN1234451C (en) | 2002-11-13 | 2002-11-13 | Preparing Method for magnetic active carbon used for water treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1500736A true CN1500736A (en) | 2004-06-02 |
| CN1234451C CN1234451C (en) | 2006-01-04 |
Family
ID=34233616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02149357 Expired - Fee Related CN1234451C (en) | 2002-11-13 | 2002-11-13 | Preparing Method for magnetic active carbon used for water treatment |
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| CN (1) | CN1234451C (en) |
Cited By (23)
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| CN100352541C (en) * | 2005-11-10 | 2007-12-05 | 上海自来水市北科技有限公司 | Preparation method of iron carrying active carbon dearsenic adsorber |
| CN100386141C (en) * | 2005-07-20 | 2008-05-07 | 上海自来水市北科技有限公司 | Composite absorption material for removing arsenic from water and its prepn. method |
| CN101818338A (en) * | 2010-04-15 | 2010-09-01 | 东北林业大学 | Method for preparing nickel radical magnetic active carbon by non-palladium activation method |
| CN101481163B (en) * | 2009-03-03 | 2011-05-25 | 同济大学 | Method for removing perchlorate ion in water and preparation of adsorption material |
| CN102078797A (en) * | 2010-12-16 | 2011-06-01 | 浙江天蓝环保技术有限公司 | Modified magnetic catalyst for demercuration of flue gas as well as preparation method and application thereof |
| CN102462845A (en) * | 2010-11-09 | 2012-05-23 | 中国矿业大学(北京) | Preparation method of magnetic target carrier, magnetic target carrier medicine system and application method thereof |
| CN102614830A (en) * | 2012-03-30 | 2012-08-01 | 重庆大学 | Method for preparing coal-based manganese magnetic activated carbon |
| CN103007881A (en) * | 2012-12-10 | 2013-04-03 | 衢州学院 | Magnetically separated bamboo charcoal-based wastewater treatment agent and preparation method and application thereof |
| CN103007882A (en) * | 2012-12-13 | 2013-04-03 | 同济大学 | Preparation method of Fe3O4@MnO2/active carbon magnetic compound adsorption material |
| CN103055813A (en) * | 2013-01-11 | 2013-04-24 | 福建工程学院 | Preparation method of formed magnetic black carbon |
| CN103506065A (en) * | 2013-10-23 | 2014-01-15 | 中国科学院烟台海岸带研究所 | Magnetic heavy metal adsorbent with casing-core structure and preparation method thereof |
| CN103611496A (en) * | 2013-11-12 | 2014-03-05 | 南京工业大学 | Magnetic carbon-based adsorbent and application thereof |
| CN104874349A (en) * | 2015-05-14 | 2015-09-02 | 河南师范大学 | Preparation method of three-dimensional mesoporous Fe3O4-C nano adsorption material |
| CN104907042A (en) * | 2015-05-14 | 2015-09-16 | 河南师范大学 | Preparation method for carbon-Fe3O4 magnetic active carbon |
| CN105170620A (en) * | 2015-09-30 | 2015-12-23 | 河南行知专利服务有限公司 | Method for restoring heavy metal contaminated soil through cooperation of magnetic activated carbon and activating agent |
| CN105521768A (en) * | 2016-01-13 | 2016-04-27 | 福建汉祥纺织科技有限公司 | Drinking water purifying agent with arsenic removing function and preparation method thereof |
| CN105923963A (en) * | 2016-06-16 | 2016-09-07 | 中国科学院南京地理与湖泊研究所 | In-situ activity coverage repairing method for persistent organic pollutants in deposited matters |
| CN106268646A (en) * | 2016-10-13 | 2017-01-04 | 沈阳建筑大学 | A kind of PAC Fe3O4/MnO2 magnetic active carbon and preparation method thereof |
| CN106943998A (en) * | 2017-04-14 | 2017-07-14 | 成都信息工程大学 | A kind of preparation method for being used to remove to remove water the magnetic active carbon of Methylene Blue |
| CN107790193A (en) * | 2017-10-30 | 2018-03-13 | 贵州理工学院 | A kind of high frequency magnetic field auxiliary ball-milling preparation method of sewage disposal catalyst |
| CN109626375A (en) * | 2019-01-17 | 2019-04-16 | 齐鲁工业大学 | A kind of additive Mn magnetism charcoal and its preparation and the application in dark ferment for hydrogen production |
| CN109704339A (en) * | 2019-01-17 | 2019-05-03 | 齐鲁工业大学 | A method of dark fermentation and hydrogen production performance is improved using additive Mn magnetism charcoal |
| CN112387249A (en) * | 2020-11-11 | 2021-02-23 | 内蒙古科技大学 | Porous biochar/zinc ferrite composite material and preparation method and application thereof |
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2002
- 2002-11-13 CN CN 02149357 patent/CN1234451C/en not_active Expired - Fee Related
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| CN100386141C (en) * | 2005-07-20 | 2008-05-07 | 上海自来水市北科技有限公司 | Composite absorption material for removing arsenic from water and its prepn. method |
| CN100352541C (en) * | 2005-11-10 | 2007-12-05 | 上海自来水市北科技有限公司 | Preparation method of iron carrying active carbon dearsenic adsorber |
| CN101481163B (en) * | 2009-03-03 | 2011-05-25 | 同济大学 | Method for removing perchlorate ion in water and preparation of adsorption material |
| CN101818338A (en) * | 2010-04-15 | 2010-09-01 | 东北林业大学 | Method for preparing nickel radical magnetic active carbon by non-palladium activation method |
| CN102462845A (en) * | 2010-11-09 | 2012-05-23 | 中国矿业大学(北京) | Preparation method of magnetic target carrier, magnetic target carrier medicine system and application method thereof |
| CN102462845B (en) * | 2010-11-09 | 2015-07-01 | 中国矿业大学(北京) | Preparation method of magnetic target carrier, magnetic target carrier medicine system and application method thereof |
| CN102078797A (en) * | 2010-12-16 | 2011-06-01 | 浙江天蓝环保技术有限公司 | Modified magnetic catalyst for demercuration of flue gas as well as preparation method and application thereof |
| CN102614830B (en) * | 2012-03-30 | 2013-10-02 | 重庆大学 | Method for preparing coal-based manganese magnetic activated carbon |
| CN102614830A (en) * | 2012-03-30 | 2012-08-01 | 重庆大学 | Method for preparing coal-based manganese magnetic activated carbon |
| CN103007881A (en) * | 2012-12-10 | 2013-04-03 | 衢州学院 | Magnetically separated bamboo charcoal-based wastewater treatment agent and preparation method and application thereof |
| CN103007882A (en) * | 2012-12-13 | 2013-04-03 | 同济大学 | Preparation method of Fe3O4@MnO2/active carbon magnetic compound adsorption material |
| CN103055813A (en) * | 2013-01-11 | 2013-04-24 | 福建工程学院 | Preparation method of formed magnetic black carbon |
| CN103506065A (en) * | 2013-10-23 | 2014-01-15 | 中国科学院烟台海岸带研究所 | Magnetic heavy metal adsorbent with casing-core structure and preparation method thereof |
| CN103506065B (en) * | 2013-10-23 | 2015-10-21 | 中国科学院烟台海岸带研究所 | A kind of Magnetic heavy metal adsorbent with casing-core structure and preparation method thereof |
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| CN103611496B (en) * | 2013-11-12 | 2016-08-17 | 南京工业大学 | A kind of magnetic carbon-supported catalyst and application |
| CN104874349A (en) * | 2015-05-14 | 2015-09-02 | 河南师范大学 | Preparation method of three-dimensional mesoporous Fe3O4-C nano adsorption material |
| CN104907042A (en) * | 2015-05-14 | 2015-09-16 | 河南师范大学 | Preparation method for carbon-Fe3O4 magnetic active carbon |
| CN105170620B (en) * | 2015-09-30 | 2018-07-03 | 江苏省中成建设工程总公司 | A kind of method of magnetic active carbon collaboration activator restoration of soil polluted by heavy metal |
| CN105170620A (en) * | 2015-09-30 | 2015-12-23 | 河南行知专利服务有限公司 | Method for restoring heavy metal contaminated soil through cooperation of magnetic activated carbon and activating agent |
| CN105521768A (en) * | 2016-01-13 | 2016-04-27 | 福建汉祥纺织科技有限公司 | Drinking water purifying agent with arsenic removing function and preparation method thereof |
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| CN106268646A (en) * | 2016-10-13 | 2017-01-04 | 沈阳建筑大学 | A kind of PAC Fe3O4/MnO2 magnetic active carbon and preparation method thereof |
| CN106943998A (en) * | 2017-04-14 | 2017-07-14 | 成都信息工程大学 | A kind of preparation method for being used to remove to remove water the magnetic active carbon of Methylene Blue |
| CN107790193A (en) * | 2017-10-30 | 2018-03-13 | 贵州理工学院 | A kind of high frequency magnetic field auxiliary ball-milling preparation method of sewage disposal catalyst |
| CN107790193B (en) * | 2017-10-30 | 2020-07-14 | 贵州理工学院 | High-frequency magnetic field assisted ball milling preparation method of catalyst for sewage treatment |
| CN109626375A (en) * | 2019-01-17 | 2019-04-16 | 齐鲁工业大学 | A kind of additive Mn magnetism charcoal and its preparation and the application in dark ferment for hydrogen production |
| CN109704339A (en) * | 2019-01-17 | 2019-05-03 | 齐鲁工业大学 | A method of dark fermentation and hydrogen production performance is improved using additive Mn magnetism charcoal |
| CN109626375B (en) * | 2019-01-17 | 2021-05-28 | 齐鲁工业大学 | Manganese-doped magnetic carbon, preparation thereof and application thereof in hydrogen production by dark fermentation |
| CN112387249A (en) * | 2020-11-11 | 2021-02-23 | 内蒙古科技大学 | Porous biochar/zinc ferrite composite material and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN1234451C (en) | 2006-01-04 |
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