CN105858659A - Peanut shell activated carbon capable of adsorbing formaldehyde and preparation method thereof - Google Patents
Peanut shell activated carbon capable of adsorbing formaldehyde and preparation method thereof Download PDFInfo
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- CN105858659A CN105858659A CN201610215004.0A CN201610215004A CN105858659A CN 105858659 A CN105858659 A CN 105858659A CN 201610215004 A CN201610215004 A CN 201610215004A CN 105858659 A CN105858659 A CN 105858659A
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- 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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Abstract
The invention relates to a peanut shell activated carbon capable of adsorbing formaldehyde and a preparation method thereof. The preparation method comprises the following steps: activating the raw material peanut shell by using a zinc chloride solution, carbonizing in a muffle furnace, and carrying out modification treatment by using sodium carbonate and a sodium bisulfite saturated solution to obtain the peanut shell activated carbon with favorable formaldehyde adsorbability, wherein the carbon (C) element content in the peanut shell activated carbon is greater than or equal to 45%, the nitrogen (N) element content is greater than or equal to 1.02%, and the sulfur (S) element content is greater than or equal to 1.25%. The preparation method has the advantages of wide raw material sources, low price, simple preparation technique and high operability, and enhances the utilization ratio of the peanut shell resources. The peanut shell activated carbon is in a porous structure, and the impurities in the activated carbon micropores are removed to some extend. Thus, the peanut shell activated carbon has the advantages of large specific area, high surface oxygen-containing functional group content and favorable chemical adsorbability; and the formaldehyde removal rate is up to 85-92%.
Description
Technical field
The invention belongs to technical field of active carbon, be specifically related to a kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance and preparation method thereof.
Background technology
Now, along with the universal of interior decoration and the increase of tightness, room air pollution becomes increasingly severe, particularly has the formaldehyde gas of toxicity and carcinogenecity to human body, ambient concentration generally exceeds standard, so the pollution of formaldehyde gas and administering method are of great interest.Administering method for indoor formaldehyde gas has much both at home and abroad, but all there is certain drawback, such as chemical reaction method and need to consume substantial amounts of chemical reagent, and cost is high, and toxic, carrier is not easily recycled；Heat catalytic oxidation method needs higher temperature, should not be in indoor use；Photocatalysis oxidation technique processing speed is slower.And the characteristics such as activated carbon adsorption is economical, ready availability, stability, ease for operation and environmental friendliness, it has also become process a kind of important method of indoor formaldehyde at present.The surface texture properties of activated carbon and surface chemical property determine its absorption property, and activated carbon has preferable adsorption effect to the compound that non-polar compound, saturated bond compound and molecular weight are bigger, and the adsorption effect for formaldehyde isopolarity molecule is poor.Therefore, a kind of adsorbent that indoor formaldehyde is had stronger absorption property is developed significant.
Activated carbon (AC) has the pore structure of prosperity and huge specific surface area, and the Organic substance in gas, solution and the granule such as inorganic matter and colloid are had stronger absorbability.Graphite microcrystalline structure that it is formed by carbon is piled up and is formed, and is mainly composed of carbon, additionally contains a small amount of hydrogen, oxygen, nitrogen etc., and the organic groups such as carboxyl, phenolic hydroxyl group and ester group are often contained on surface.Activated carbon has enough chemical stability, mechanical strength, acidproof, alkaline-resisting, heat-resisting, in field extensive application such as medicine, chemical industry and environmental protection.The conventional raw material preparing activated carbon has timber and coal resources etc., and the Activated Carbon Production prepared in this way is relatively costly.
China is the first big country of peanut production in the world, and annual production reaches more than 15,000,000 tons, accounts for about the 40% of Gross World Product.In Pericarppium arachidis hypogaeae, topmost composition is crude fibre, and its content is more than 65%, also has some crude protein, crude fat, mineral etc..Pericarppium arachidis hypogaeae is the by-product of peanut production, accounting for the 30% of Semen arachidis hypogaeae total amount, these by-products are in addition to a small amount of raw material being used as roughage and manufacture fibre board, and remaining a big chunk is all dropped or burns as fuel, not only cause the great wasting of resources, and environmental pollution can be caused.
Summary of the invention
In order to make full use of the Pericarppium arachidis hypogaeae gone out of use, the present invention provides Activated Carbon Made from Peanut Shells that a kind of raw material sources are extensive, cheap, technique is simple, workable, formaldehyde adsorption property is good and preparation method thereof.
A kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance, with Pericarppium arachidis hypogaeae as raw material, activated by activator, and carbonization in Muffle furnace, Activated Carbon Made from Peanut Shells is prepared again through modifier modification, carbon element content >=45% in described Activated Carbon Made from Peanut Shells, nitrogen element content >=1.02%, sulfur content >=1.25%.
The operation of the Activated Carbon Made from Peanut Shells that preparation has formaldehyde adsorption performance is as follows:
(1) preparation of Activated Carbon Made from Peanut Shells crude product
Pericarppium arachidis hypogaeae is pulverized, mixes with the liquor zinci chloridi of mass concentration 20% 60%；Carbonization in Muffle furnace, obtains Activated Carbon Made from Peanut Shells crude product；
(2) modification of Activated Carbon Made from Peanut Shells product
First modified with saturated sodium carbonate solution, more modified with saturated sodium sulfite solution, obtain Activated Carbon Made from Peanut Shells.
Further technical scheme is as follows:
The concrete operations of the Activated Carbon Made from Peanut Shells that preparation has formaldehyde adsorption performance are as follows:
(1) preparation of Activated Carbon Made from Peanut Shells crude product
Pericarppium arachidis hypogaeae is sorted, cleans, dry under the conditions of temperature 100 DEG C, pulverize, cross 20 mesh sieves；Being mixed by the liquor zinci chloridi of Pericarppium arachidis hypogaeae and mass concentration 20% 60% by mass volume ratio 1:1 3,30 DEG C of water-baths activate 12 24h；In Muffle furnace under the conditions of temperature 200 600 DEG C, carbonization 1 5h；It is cooled to room temperature, first carries out pickling, then to be washed with distilled water to pH value be 57, dry, grind, cross 80 mesh sieves, obtain Activated Carbon Made from Peanut Shells crude product；
(2) modification of Activated Carbon Made from Peanut Shells product
Being mixed with saturated sodium carbonate liquor by Activated Carbon Made from Peanut Shells crude product by mass volume ratio 1:5 10,30 DEG C seal modified 1 1.5h；Removing unnecessary saturated sodium carbonate solution, mixed with saturated sodium sulfite solution by Activated Carbon Made from Peanut Shells crude product by mass volume ratio 1:5 10,30 DEG C seal modified 1 1.5h；Distilled water wash is 79 to pH value, dries, grinds, crosses 80 mesh sieves, obtains Activated Carbon Made from Peanut Shells.
Described pickling is to clean with the hydrochloric acid solution of 3mol/L.
Described saturated sodium carbonate liquor is the saturated sodium carbonate liquor of preparation under conditions of 25 DEG C.
Described saturated sodium sulfite solution is the saturated sodium sulfite solution of preparation under conditions of 25 DEG C.
Described being modified as under the rotating speed of 100 150r/min shakes modification.
The Advantageous Effects of the present invention is embodied in the following aspects:
1, the activated carbon of the present invention is with Pericarppium arachidis hypogaeae as raw material, and wide material sources are cheap, and preparation technology is simple, workable, improves the utilization rate of Pericarppium arachidis hypogaeae resource.
2, Activated Carbon Made from Peanut Shells prepared by the present invention is vesicular texture, impurity in activated carbon capillary has been removed, specific surface area is bigger, surface oxygen functional group content is big, modified by sodium carbonate and sodium sulfite, activated carbon surface has loaded sodium sulfite, can react with the formaldehyde in air and generate Alpha-hydroxy sodium sulfonate, thus adding the chemisorbed performance of activated carbon so that formaldehyde adsorption property is greatly improved.
3, carbon (C) constituent content >=45% in Activated Carbon Made from Peanut Shells prepared by the inventive method, nitrogen (N) constituent content >=1.02%, sulfur (S) constituent content >=1.25%.
Accompanying drawing explanation
Fig. 1 is the microstructure Electronic Speculum figure of the Activated Carbon Made from Peanut Shells crude product in embodiment 1.
Fig. 2 is the microstructure Electronic Speculum figure of the Activated Carbon Made from Peanut Shells in embodiment 1.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1
The concrete preparation process of a kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance is as follows:
(1) take 500g Pericarppium arachidis hypogaeae raw material, it is sorted, cleans, then dry in 100 DEG C of baking ovens, after pulverizing with pulverizer, cross 20 mesh sieves；Take the Pericarppium arachidis hypogaeae after 10g pulverizes and add the liquor zinci chloridi mix homogeneously of 20mL mass concentration 40%, 30 DEG C of water-baths activate 12h；It is subsequently placed in Muffle furnace and carries out carbonization, carbonization temperature 500 DEG C, carbonization time 4h, it is cooled to after room temperature clean with the hydrochloric acid of 3mol/L, then to be washed with distilled water to pH value be 5, dry, grind, cross 80 mesh sieves, obtain Activated Carbon Made from Peanut Shells crude product；The microstructure Electronic Speculum of Activated Carbon Made from Peanut Shells crude product is shown in Fig. 1.
(2) take 15g Activated Carbon Made from Peanut Shells crude product to be placed in the conical flask of 250mL, it is subsequently adding the saturated sodium carbonate liquor of 100mL, (saturated sodium carbonate liquor is prepared under the conditions of 25 DEG C, Activated Carbon Made from Peanut Shells crude product is 15:100 with the mass volume ratio of saturated sodium carbonate liquor), it is placed on after sealing in the shaking table of 30 DEG C, under the rotating speed of 140r/min, shakes 1h；Pour out unnecessary saturated sodium carbonate solution, add the saturated sodium sulfite solution of 100mL, (saturated sodium sulfite solution is prepared under the conditions of 25 DEG C, Activated Carbon Made from Peanut Shells crude product is 15:100 with the mass volume ratio of saturated sodium sulfite solution), it is placed on after sealing in the shaking table of 30 DEG C, under the rotating speed of 140r/min, continues concussion 1h, be washed with distilled water to pH value and be 8, dry, grind, cross 80 mesh sieves, both having obtained Activated Carbon Made from Peanut Shells, the microstructure Electronic Speculum of Activated Carbon Made from Peanut Shells is shown in Fig. 2.
In the Activated Carbon Made from Peanut Shells of the present invention, carbon (C) constituent content is 45.61%, and nitrogen (N) constituent content is 1.25%, and sulfur (S) constituent content is 1.54%.
The formalin of 50mL 10% is placed so that concentration of formaldehyde therein controls at 1.071mg/m in the exsiccator of a diameter of 200mm3, take the made Activated Carbon Made from Peanut Shells of this preparation method of 1g and put into exsiccator, in using haze Powerleader source portable domestic indoor survey methylene oxide detecting instrument record exsiccator, content of formaldehyde is along with the change of adsorption time.
After measured, the Activated Carbon Made from Peanut Shells of the present invention is after absorption 2h so that the content of formaldehyde in exsiccator drops to 0.104mg/m3, formaldehyde clearance reaches 90.29%.
Embodiment 2
The concrete preparation process of a kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance is as follows:
(1) take 500g Pericarppium arachidis hypogaeae raw material, it is sorted, cleans, dry in 100 DEG C of baking ovens, after pulverizing with pulverizer, cross 20 mesh sieves；Take the Pericarppium arachidis hypogaeae after 10g pulverizes and add the liquor zinci chloridi mix homogeneously of 20mL mass concentration 30%, 30 DEG C of water-baths activate 12h；It is subsequently placed in Muffle furnace and carries out carbonization, carbonization temperature 400 DEG C, carbonization time 2h, it is cooled to after room temperature clean with the hydrochloric acid of 3mol/L, then to be washed with distilled water to pH value be 5.5, dry, grind, cross 80 mesh sieves, obtain Activated Carbon Made from Peanut Shells crude product；
(2) take 15g Activated Carbon Made from Peanut Shells crude product to be placed in the conical flask of 250mL, be subsequently adding the saturated sodium carbonate liquor of 100mL, be placed on after sealing in the shaking table of 30 DEG C, under the rotating speed of 150r/min, shake 1.5h；Pour out unnecessary saturated sodium carbonate solution, add the saturated sodium sulfite solution of 100mL, be placed on after sealing in the shaking table of 30 DEG C, under the rotating speed of 150r/min, continue concussion 1.5h, it is washed with distilled water to pH value be 8, dry, grind, cross 80 mesh sieves, both obtains Activated Carbon Made from Peanut Shells.
In the Activated Carbon Made from Peanut Shells of the present invention, C element content is 47.72%, and N element content is 1.28%, and S constituent content is 1.46%.
The formalin of 50mL 10% is placed so that concentration of formaldehyde therein controls at 1.035mg/m in the exsiccator of a diameter of 200mm3, take the made Activated Carbon Made from Peanut Shells of this preparation method of 1g and put into exsiccator, in using haze Powerleader source portable domestic indoor survey methylene oxide detecting instrument record exsiccator, content of formaldehyde is along with the change of adsorption time.
After measured, the Activated Carbon Made from Peanut Shells of the present invention is after absorption 2h so that the content of formaldehyde in exsiccator drops to 0.152
mg/m3, formaldehyde clearance reaches 85.31%.
The other the same as in Example 1.
Embodiment 3
The concrete preparation process of a kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance is as follows:
(1) take 500g Pericarppium arachidis hypogaeae raw material, it is sorted, cleans, then dry in 100 DEG C of baking ovens, after pulverizing with pulverizer, cross 20 mesh sieves；Take the Pericarppium arachidis hypogaeae after 10g pulverizes and add the liquor zinci chloridi mix homogeneously of 25mL mass concentration 40%, 30 DEG C of water-baths activate 14h；It is subsequently placed in Muffle furnace and carries out carbonization, carbonization temperature 600 DEG C, carbonization time 2h, it is cooled to after room temperature clean with the hydrochloric acid of 3mol/L, then is washed with distilled water to pH value and is 6, dries, grinds, crosses 80 mesh sieves, obtain Activated Carbon Made from Peanut Shells crude product；
(2) take 15g Activated Carbon Made from Peanut Shells crude product to be placed in the conical flask of 250mL, be subsequently adding the saturated sodium carbonate liquor of 120mL, be placed on after sealing in the shaking table of 30 DEG C, under the rotating speed of 120r/min, shake 1.2h；Pour out unnecessary saturated sodium carbonate solution, add the saturated sodium sulfite solution of 120mL, be placed on after sealing in the shaking table of 30 DEG C, concussion 1.2h is continued under the rotating speed of 120r/min, being washed with distilled water to pH value is 8.5, dries, grinds, crosses 80 mesh sieves, had both obtained Activated Carbon Made from Peanut Shells.
In the Activated Carbon Made from Peanut Shells of the present invention, C element content is 46.83%, and N element content is 1.22%, and S constituent content is 1.48%.
The formalin of 50mL 10% is placed so that concentration of formaldehyde therein controls at 1.049mg/m in the exsiccator of a diameter of 200mm3, take the made Activated Carbon Made from Peanut Shells of this preparation method of 1g and put into exsiccator, in using haze Powerleader source portable domestic indoor survey methylene oxide detecting instrument record exsiccator, content of formaldehyde is along with the change of adsorption time.
After measured, the Activated Carbon Made from Peanut Shells of the present invention is after absorption 2h so that the content of formaldehyde in exsiccator drops to 0.122mg/m3, formaldehyde clearance reaches 88.37%.
Claims (7)
1. an Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance, it is characterized in that, it is with Pericarppium arachidis hypogaeae as raw material, activated by activator, and carbonization in Muffle furnace, then prepare Activated Carbon Made from Peanut Shells, carbon element content >=45% in described Activated Carbon Made from Peanut Shells through modifier modification, nitrogen element content >=1.02%, sulfur content >=1.25%.
2. the method for the preparation a kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance described in claim 1, it is characterised in that preparation manipulation is as follows:
(1) preparation of Activated Carbon Made from Peanut Shells crude product
Pericarppium arachidis hypogaeae is pulverized, mixes with the liquor zinci chloridi of mass concentration 20% 60%；Carbonization in Muffle furnace, obtains Activated Carbon Made from Peanut Shells crude product；
(2) modification of Activated Carbon Made from Peanut Shells product
First modified with saturated sodium carbonate solution, more modified with saturated sodium sulfite solution, obtain Activated Carbon Made from Peanut Shells.
Preparation the most according to claim 2 has the method for the Activated Carbon Made from Peanut Shells of formaldehyde adsorption performance, it is characterised in that concrete operations are as follows:
(1) preparation of Activated Carbon Made from Peanut Shells crude product
Pericarppium arachidis hypogaeae is sorted, cleans, dry under the conditions of temperature 100 DEG C, pulverize, cross 20 mesh sieves；Being mixed by the liquor zinci chloridi of Pericarppium arachidis hypogaeae and mass concentration 20% 60% by mass volume ratio 1:1 3,30 DEG C of water-baths activate 12 24h；In Muffle furnace under the conditions of temperature 200 600 DEG C, carbonization 1 5h；It is cooled to room temperature, first carries out pickling, then to be washed with distilled water to pH value be 57, dry, grind, cross 80 mesh sieves, obtain Activated Carbon Made from Peanut Shells crude product；
(2) modification of Activated Carbon Made from Peanut Shells product
Being mixed with saturated sodium carbonate liquor by Activated Carbon Made from Peanut Shells crude product by mass volume ratio 1:5 10,30 DEG C seal modified 1 1.5h；Removing unnecessary saturated sodium carbonate solution, mixed with saturated sodium sulfite solution by Activated Carbon Made from Peanut Shells crude product by mass volume ratio 1:5 10,30 DEG C seal modified 1 1.5h；Distilled water wash is 79 to pH value, dries, grinds, crosses 80 mesh sieves, obtains Activated Carbon Made from Peanut Shells.
A kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance the most according to claim 3, it is characterised in that described pickling is to clean with the hydrochloric acid solution of 3mol/L.
5. according to a kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance described in Claims 2 or 3, it is characterised in that described saturated sodium carbonate liquor is the saturated sodium carbonate liquor of preparation under conditions of 25 DEG C.
6. according to a kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance described in Claims 2 or 3, it is characterised in that described saturated sodium sulfite solution is the saturated sodium sulfite solution of preparation under conditions of 25 DEG C.
A kind of Activated Carbon Made from Peanut Shells with formaldehyde adsorption performance the most according to claim 3, it is characterised in that described in be modified as under the rotating speed of 100 150r/min concussion modification.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610215004.0A CN105858659A (en) | 2016-04-08 | 2016-04-08 | Peanut shell activated carbon capable of adsorbing formaldehyde and preparation method thereof |
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| CN201610215004.0A CN105858659A (en) | 2016-04-08 | 2016-04-08 | Peanut shell activated carbon capable of adsorbing formaldehyde and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115843A (en) * | 2017-05-23 | 2017-09-01 | 江苏大学 | A kind of preparation method and applications for coming from peanut shell modified activated carbon |
| CN107866207A (en) * | 2017-11-07 | 2018-04-03 | 常州布奇纺织有限公司 | A kind of preparation method of permanent seal cooling formaldehyde adsorbent |
| CN115991474A (en) * | 2022-11-04 | 2023-04-21 | 塔里木大学 | Preparation method, product and application of cotton stalk activated carbon |
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| CN101717072A (en) * | 2009-12-07 | 2010-06-02 | 北京化工大学 | Method for storing hydrogen and carbon dioxide by active carbon microballoons |
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2016
- 2016-04-08 CN CN201610215004.0A patent/CN105858659A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101717072A (en) * | 2009-12-07 | 2010-06-02 | 北京化工大学 | Method for storing hydrogen and carbon dioxide by active carbon microballoons |
Non-Patent Citations (2)
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| 孔海平等: "利用花生壳制备活性炭及其性能的测定", 《河南化工》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115843A (en) * | 2017-05-23 | 2017-09-01 | 江苏大学 | A kind of preparation method and applications for coming from peanut shell modified activated carbon |
| CN107866207A (en) * | 2017-11-07 | 2018-04-03 | 常州布奇纺织有限公司 | A kind of preparation method of permanent seal cooling formaldehyde adsorbent |
| CN115991474A (en) * | 2022-11-04 | 2023-04-21 | 塔里木大学 | Preparation method, product and application of cotton stalk activated carbon |
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Application publication date: 20160817 |