CN105056884B - A kind of preparation method of absorbent charcoal material for drink water purifying - Google Patents
A kind of preparation method of absorbent charcoal material for drink water purifying Download PDFInfo
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- CN105056884B CN105056884B CN201510434719.0A CN201510434719A CN105056884B CN 105056884 B CN105056884 B CN 105056884B CN 201510434719 A CN201510434719 A CN 201510434719A CN 105056884 B CN105056884 B CN 105056884B
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Abstract
The invention discloses a kind of preparation methods of the absorbent charcoal material for drink water purifying, by adsorbing modifier, cryogenic freezing processing and supercritical water treatment, improve the pore-size distribution in activated carbon.Compared with prior art, the catalysis material of the present invention increases middle hole number and ratio in activated carbon, the ability for adsorbing small molecule organic compound is stronger using modified activated carbon as carrier, there is a small amount of macropore to exist in pore-size distribution simultaneously, also have certain adsorption capacity to bacterium and microorganism.In addition the adsorbent also has the characteristics that good moldability, can also be processed into various specific shapes, easy to install and use.
Description
Technical field
The present invention relates to a kind of active carbon adsorption materials of energy deepling purification of drinking water and preparation method thereof, belong to Water warfare
Technical field.
Background technology
With increasingly sharpening in water pollution, the content of organics in urban drinking water source significantly improves, and most domestic
Waterworks still using conventional water-purifying process, can only achieve the organic pollution of the low concentration in water source 40% removal
Rate, it is difficult to ensure that drinking water it is safe and reliable, therefore the further treatment technique of drinking water is widely paid close attention to.
Absorbent charcoal material is a kind of important amorphous carbon cellulosic material, is black porosu solid, and chemical property is stablized, hole
Structure is flourishing, has huge specific surface area, is a kind of excellent adsorbent, has abundant pore passage structure and huge ratio table
Area has been widely used in every field.Activated carbon derives from a wealth of sources, can utilize any such as timber of the substance containing carbon,
Sawdust, coal, shell, bone etc. are prepared as raw material.Since activated carbon has special microstructure, hole is flourishing, has pole
Strong adsorption function, regenerating easily and derives from a wealth of sources, therefore activated carbon obtains in terms of the advanced treating of drinking water in recent years
It is widely applied.
Activated carbon adsorption processing water technology is to be introduced from foreign countries in the sixties in last century, its application and development in recent years is lifted
Huge progress.The major pollutants nitrobenzene of water pollution in Songhuajiang River accident in 2005 is gone using conventional water technology
Except rate only has 2-5%, but nitrobenzene is easily handled by activated carbon, is taken in emergency processing by active carbon powder and activity
The method that charcoal particle is jointly processed by absorption, achieves success.
But since the size distribution of activated carbon is concentrated mainly on micropore area, and micropore for organic macromolecule and
Size is less than normal for microorganism, it is difficult to play suction-operated, therefore the particle that activated carbon is ground into very little is usually needed to use
Active carbon particle is either bonded together use.Although Powdered Activated Carbon adsorption effect is fine, it can be difficult to processing, it has not been convenient to
It uses；Secondary pollution easily is caused to water quality again using binding agent.Therefore change the pore-size distribution of activated carbon, improving its performance is
Current research hotspot.
CN104761018A discloses the method that water process is carried out using activated carbon, includes the following steps：In water process work
Activated carbon is selected to carry out water process in skill；The activated carbon is selected according to following standard：Select iodine sorption value be more than 950mg/g and
The adsorptive value of methylene blue is more than the activated carbon of 200mg/g；Or selection aperture is straight not less than the organic molecule in water process
The activated carbon that 1.7 times of diameter.
CN103752269A discloses a kind of modified activated carbon and preparation method thereof.The modified activated carbon is to the Cr in water body
(VI) ion has very high adsorption capacity, while has adsorption capacity height, has to the heavy metal-containing polluted water of high concentration good
Treatment effect.The activated carbon of the invention is modified by the multi-step chemical to original activity charcoal so that activated carbon surface is grafted
The functional group of functionalization, so as to greatly improve adsorption capacity of the activated carbon for Cr.
CN101125691A discloses a kind of method that water process is carried out using active carbon fibre peacekeeping ozone oxidization combination.
Reactor bottom setting single-layer or multi-layer passes through modified activated carbon fibre, and activated carbon fibre dosage is 1-50g/L in reactor,
Concentration of ozone gas is 5-12mg/L, processing time 5-90min.Modification to activated carbon fibre is that activated carbon is placed on charing
Re-activation is carried out in stove, activation process is in addition to vapor, it is also an option that one in carbon dioxide, ammonia and metallic salt
It plants or two kinds as activator, improve the ratio in the aperture on activated carbon surface more than 0.7-2.5nm.
Invention content
The purpose of the present invention is to provide a kind of acticarbon of the separating formaldehyde from air and preparation method thereof,
Adsorbent provided by the invention can effectively absorb the formaldehyde in air at room temperature, and adsorption capacity is big, and service life is long.
A kind of preparation method of absorbent charcoal material for drink water purifying, includes the following steps：
1) aqueous solution for the soluble nitrate that mass concentration is 10-20% is prepared；2) activated carbon is immersed in step 1)
10-24h in obtained aqueous solution；3) 1-24h will be freezed in a low temperature of -30 DEG C to -10 DEG C impregnated of the activated carbon of aqueous solution；
4) it is warming up to 120-150 DEG C of dry 1-3h；5) 1-3h is activated under condition of supercritical water；6) with water after dioxygen water washing under room temperature
It washes；7) it is dried to obtain modified active high-area carbon；The soluble nitrate be one kind in sodium nitrate, potassium nitrate, calcium nitrate or
A variety of, preferably soluble nitrate is calcium nitrate.
The middle hole number of the modified active high-area carbon accounts for more than 30% total duct quantity.
The absorbent charcoal carrier comes from plant or coal processes, and preferably described absorbent charcoal carrier comes from smokelessly
Prepared by coal calcination, the burn tinctuer in preparation process is 25-40%, and preferably burn tinctuer is 25-30%；The preparation of more preferable activated carbon
Include the following steps：Anthracite removes impurity and is ground into the particle that grain size is 0.01-0.1mm；Add in polymethacrylates
Stirring molding, calcines 10-24h at 100-150 DEG C, 5-12h is calcined at 800-900 DEG C, in 750-800 DEG C and vapor item
1-24h is activated under part to get to the absorbent charcoal carrier.
The present invention also provides a kind of modified activated carbon prepared using the method and using at the modified activated carbon
The method for managing water, especially drinking water.
In general, in water referring to organic pollution molecular diameter all in 1-50nm, that is, belong to hole division
In mesoporous (diameter 2-50nm) range, and common activated carbon its distribution of pores is substantially all in micropore (diameter is less than 2nm)
Range, therefore common activated carbon processing Organic substance in water and the effect of bacterium and bad.The present invention passes through to activated carbon
Processing be improved, be added significantly to the quantity of mesoporous hole in activated carbon, and containing a small amount of macropore hole, improve work
Property charcoal is to the adsorption effect of the harmful substances such as Organic substance in water molecule and virus and bacteria.Carried by active carbon structural reform disclosed by the invention
It does not need to add additional loaded article into method, avoids the secondary pollution to water body.Certainly, carried by active carbon disclosed by the invention
Body can also be used as carrier material, in advance substance of the absorption with specific function, to reach better effect.
The present invention handles activated carbon using freezing, occurs what volume expansion was dissolved in water simultaneously after icing using water
Crystal is precipitated in nitrate part so that partial pore duct caves in so that and borehole enlargement forms the mesoporous duct of bigger,
It is even a small amount of to form macropore duct；Simultaneously crystallization nitric acid salt crystal be partly retained in duct during drying, with
Under condition of supercritical water afterwards, physicochemical reaction occurs, further improves the pore passage structure of activated carbon.In addition in activity
In the modification of charcoal, add in suitable calcium and also contribute to increase middle hole number in activated carbon.
Compared with prior art, catalysis material of the invention is increased using modified activated carbon as carrier in activated carbon
Middle hole number and ratio, the ability for adsorbing small molecule organic compound is stronger, while also has a small amount of macropore to deposit in pore-size distribution
Also there is certain adsorption capacity to bacterium and microorganism.In addition the adsorbent also has the characteristics that good moldability, can also process
It is easy to install and use into various specific shapes.
Specific embodiment
It is further illustrated the present invention below by embodiment
Embodiment 1
Anthracite removes impurity and is ground into the particle that grain size is 0.01-0.1mm；Polymethacrylates is added in stir into
Type calcines 10h at 120 DEG C, and 12h is calcined at 800 DEG C, is activated under 800 DEG C and water vapor conditions for 24 hours to get to activity
Charcoal；Prepare the aqueous solution for the calcium nitrate that mass concentration is 20%；10h in the aqueous solution that activated carbon is immersed in；It will dipping
The activated carbon of aqueous solution freezes 5h in a low temperature of -30 DEG C；It is warming up to 120 DEG C of dry 3h；It is activated under condition of supercritical water
3h；With being washed after dioxygen water washing under room temperature；It is dried to obtain modified active high-area carbon；
Embodiment 2
Use burn tinctuer for 30% active carbon from coal；Calcium nitrate and sodium nitrate prepare mass concentration according to 3: 1 ratio
For 25% aqueous solution, 10h in the aqueous solution that activated carbon is immersed in；By impregnated of the activated carbon of aqueous solution at -20 DEG C
In a low temperature of freeze 10h；It is warming up to 150 DEG C of dry 2h；3h is activated under condition of supercritical water；With after dioxygen water washing under room temperature
Washing；It is dried to obtain modified active high-area carbon；
Comparative example 1
Without the normal activated carbon of modification
Comparative example 2
By the activated carbon of supercritical water treatment
Water treatmenting performance evaluation comparison is carried out to the activated carbon that modified activated carbon disclosed by the invention and other methods are handled,
Static Adsorption 1h is carried out using the aqueous solution of the 100ppm concentration of different material, the results are shown in table below
| Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | |
| Heavy metal | 98.2 | 96.5 | 63.0 | 82.7 |
| Benzoic acid | 99.1 | 98.9 | 45.9 | 63.8 |
| COD | 96.3 | 91.5 | 40.6 | 55.8 |
The adsorbent that can be seen that the present invention from adsorption test data preferably integrates absorption property, especially to organic
Object impurity has good adsorption effect.
Claims (3)
1. a kind of preparation method of absorbent charcoal material for drink water purifying, includes the following steps：
1) aqueous solution for the soluble nitrate that mass concentration is 10-20% is prepared；2) activated carbon is immersed in step 1)
10-24h in obtained aqueous solution；3) 1- will be freezed in a low temperature of -30 DEG C to -10 DEG C impregnated of the activated carbon of aqueous solution
24h；4) it is warming up to 120-150 DEG C of dry 1-3h；5) 1-3h is activated under condition of supercritical water；6) dioxygen water washing is used under room temperature
After wash；7) it is dried to obtain the absorbent charcoal material for drink water purifying；The soluble nitrate be sodium nitrate, potassium nitrate,
It is one or more in calcium nitrate；
For the activated carbon source in anthracite, it is 25-40% to calcine the burn tinctuer in preparation process；It is described to be derived from anthracitic work
The preparation of property charcoal includes the following steps：Anthracite removes impurity and is ground into the particle that grain size is 0.01-0.1mm；It adds in poly-
Methacrylate stirring molding, calcines 10-24h at 100-150 DEG C, 5-12h is calcined at 800-900 DEG C,
Activation 1-24h is to get to the activated carbon under 750-800 DEG C and water vapor conditions.
2. a kind of absorbent charcoal material prepared using the method as described in claim 1.
A kind of 3. method that water process is carried out using absorbent charcoal material as claimed in claim 2.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277287A (en) * | 2016-08-31 | 2017-01-04 | 江苏兴海环保科技有限公司 | A kind of preparation method for cultivating microorganism carrier |
| CN106277361A (en) * | 2016-08-31 | 2017-01-04 | 江苏兴海环保科技有限公司 | A kind of preparation method for water treatment carrier of giving up |
| CN110092433A (en) * | 2019-04-24 | 2019-08-06 | 湖南大学 | A method of it is leaked based on regulation activity charcoal medium with reducing pathogenic bacteria in drinking water |
| CN110240233B (en) * | 2019-06-18 | 2022-04-22 | 江苏居安环境工程有限公司 | Preparation method and application of modified bamboo charcoal |
| CN111389366B (en) * | 2020-04-20 | 2022-04-26 | 南华大学 | Modification method of activated carbon, modified activated carbon and application thereof |
| CN113244885A (en) * | 2021-04-25 | 2021-08-13 | 龙岩市华研活性炭科技有限公司 | Modified activated carbon for aquarium filtration and adsorption and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708587A (en) * | 2014-01-03 | 2014-04-09 | 长沙皓龙环保科技有限公司 | Preparation method of composite electrode for removing arsenic in water based on electro-adsorption and method for removing arsenic |
| CN103752269A (en) * | 2014-01-23 | 2014-04-30 | 河海大学 | Modified active carbon and preparation method thereof |
| CN104709906A (en) * | 2013-12-17 | 2015-06-17 | 中国科学院过程工程研究所 | Preparation method of three dimensional graded porous activated carbon material |
-
2015
- 2015-07-23 CN CN201510434719.0A patent/CN105056884B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709906A (en) * | 2013-12-17 | 2015-06-17 | 中国科学院过程工程研究所 | Preparation method of three dimensional graded porous activated carbon material |
| CN103708587A (en) * | 2014-01-03 | 2014-04-09 | 长沙皓龙环保科技有限公司 | Preparation method of composite electrode for removing arsenic in water based on electro-adsorption and method for removing arsenic |
| CN103752269A (en) * | 2014-01-23 | 2014-04-30 | 河海大学 | Modified active carbon and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Enhancement of the methylene blue adsorption rate for ultramicroporous carbon fiber by addition of mesopores;Song Lei et al.;《carbon》;20060411;第44卷;第1884-1890页 * |
| 中孔结构对活性炭吸附卷烟烟气中有机物的影响;宋磊等;《环境科学学报》;20140228;第34卷(第2期);第350页第2.2.1节 * |
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Inventor after: Cao Xiaojuan Inventor before: Xi Haifeng |
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Effective date of registration: 20170831 Address after: 226600 Nantong City, Haian Province, Haian Town, Pingqiao village, Group No. three, No. 10, No. Applicant after: Cao Xiaojuan Address before: 226600 No. 208 Jianghai West Road, Haian County, Jiangsu, Nantong Applicant before: NANTONG MINGWU E-COMMERCE CO., LTD. |
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Effective date of registration: 20180522 Address after: 511517 one of Chuangxing two road 10, high tech Industrial Development Zone, Qingyuan, Guangdong. Applicant after: Qingyuan Huaxin drink Co., Ltd. Address before: 226600 No. 10, group three, Pingqiao village, Haian Town, Haian, Nantong, Jiangsu. Applicant before: Cao Xiaojuan |
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