CN109867283A - A kind of preparation method of phosphoric acid method granular activated carbon - Google Patents
A kind of preparation method of phosphoric acid method granular activated carbon Download PDFInfo
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- CN109867283A CN109867283A CN201711246664.6A CN201711246664A CN109867283A CN 109867283 A CN109867283 A CN 109867283A CN 201711246664 A CN201711246664 A CN 201711246664A CN 109867283 A CN109867283 A CN 109867283A
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- activated carbon
- granular activated
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- phosphoric acid
- impregnating ratio
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Abstract
The invention discloses a kind of preparation methods of phosphoric acid method granular activated carbon; it is raw material, H3PO4 for activator that the present invention, which is used using cedar sawdust; using single factor analysis and orthogonal experimental design method; the various preparation factors of granular activated carbon pore structure and iodine sorption value, methylene blue and intensity; it has been determined that phosphoric acid prepares the optimum process condition of granular activated carbon: phosphoric acid concentration 70%; impregnating ratio is 180%; kneading temperature is 170 DEG C; kneading time is 60min; activation temperature is 350 DEG C, activation time 210min.Obtained granular activated carbon iodine sorption value is 1020.04mg/g, methylene blue adsorption value 225mg/g, intensity 88.73%, BET specific surface area 1486.48m2/g。
Description
Technical field
The present invention relates to active carbon fields, wherein a kind of involved preparation method of phosphoric acid method granular activated carbon.
Background technique
In the prior art, stalk is the subsidiary product of agricultural production, as agricultural production big country, the annual stalk in China
Yield can achieve 700,000,000~800,000,000 tons, in addition forestry waste such as bamboo branch, sawdust, afforestation lop etc., it is useless to produce agricultural per year
Gurry is up to 1,000,000,000 tons or more.As the big province of National Agricultural, the agriculture and forestry organic waste material generated every year reaches more than one hundred million tons in Sichuan.It is every to ripen in summer
The information of crop straw burning is just constantly transmitted in autumn harvest, various regions, and city is shrouded by gray haze, occurs a large amount of PM2.5 suspended matter in air
Equal substances, visibility sharply decline, and cause trip difficult.Crop straw burning remains incessant after repeated prohibition, and to solve the problems, such as crop straw burning, answer
This finds a way out in advance for stalk, and more wastes is allowed to become resource.
Summary of the invention
The present invention to solve the above-mentioned problems, to provide a kind of preparation method of phosphoric acid method granular activated carbon.
It is raw material, H3PO4 for activator that the present invention, which is used using cedar sawdust, using single factor analysis and orthogonal
The various preparation factors of method, granular activated carbon pore structure and iodine sorption value, methylene blue and intensity have determined phosphoric acid preparation
The optimum process condition of grain active carbon: phosphoric acid concentration is 70 %, and impregnating ratio 180%, kneading temperature is 170 DEG C, and kneading time is
60min, activation temperature are 350 DEG C, activation time 210min.Obtained granular activated carbon iodine sorption value is 1020.04mg/g,
Methylene blue adsorption value is 225mg/g, intensity 88.73%, BET specific surface area 1486.48m2/g.
The influence of impregnating ratio and charcoal activation temperature to granular activated carbon absorption property is bigger, and kneading temperature and impregnating ratio
Influence to granular activated carbon intensity is bigger.Since the intensity of granular activated carbon improves becoming in decline with impregnating ratio
Gesture, and the amplitude declined is larger, therefore proposes to prepare granular activated carbon using multiplicity reactivation agent method.
The impregnating ratio of phosphoric acid and sawdust can be reduced using composite activating agent, to improve the intensity of granular activated carbon.Together
When composite activating agent granular activated carbon absorption property can be improved.Therefore it can be made that absorption property is good, intensity using the method
High granular activated carbon.
Specific embodiment
The preferred embodiments of the present invention will be described in detail, so that advantages and features of the invention can be easier to by ability
Field technique personnel understanding, so as to make a clearer definition of the protection scope of the present invention.
It is raw material, H3PO4 for activator that the present invention, which is used using cedar sawdust, using single factor analysis and orthogonal
The various preparation factors of method, granular activated carbon pore structure and iodine sorption value, methylene blue and intensity have determined phosphoric acid preparation
The optimum process condition of grain active carbon: phosphoric acid concentration is 70 %, and impregnating ratio 180%, kneading temperature is 170 DEG C, and kneading time is
60min, activation temperature are 350 DEG C, activation time 210min.Obtained granular activated carbon iodine sorption value is 1020.04mg/g,
Methylene blue adsorption value is 225mg/g, intensity 88.73%, BET specific surface area 1486.48m2/g.
The influence of impregnating ratio and charcoal activation temperature to granular activated carbon absorption property is bigger, and kneading temperature and impregnating ratio
Influence to granular activated carbon intensity is bigger.Since the intensity of granular activated carbon improves becoming in decline with impregnating ratio
Gesture, and the amplitude declined is larger, therefore proposes to prepare granular activated carbon using multiplicity reactivation agent method.
The impregnating ratio of phosphoric acid and sawdust can be reduced using composite activating agent, to improve the intensity of granular activated carbon.Together
When composite activating agent granular activated carbon absorption property can be improved.Therefore it can be made that absorption property is good, intensity using the method
High granular activated carbon.It for those skilled in the art, still can be to technology documented by foregoing embodiments
Scheme is modified or equivalent replacement of some of the technical features, all within the spirits and principles of the present invention, institute
Any modification, equivalent substitution, improvement and etc. of work, should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of preparation method of phosphoric acid method granular activated carbon, it is raw material, H3PO4 for activator that the present invention, which is used using cedar sawdust,
Using single factor analysis and orthogonal experimental design method, granular activated carbon pore structure and iodine sorption value, methylene blue and intensity
Various preparation factors, be determined that phosphoric acid prepares the optimum process condition of granular activated carbon: phosphoric acid concentration is 70 %, and impregnating ratio is
180%, kneading temperature is 170 DEG C, kneading time 60min, and activation temperature is 350 DEG C, activation time 210min, obtained
Granular activated carbon iodine sorption value is 1020.04mg/g, and methylene blue adsorption value 225mg/g, intensity 88.73%, BET compares table
Area is 1486.48m2/g.
2. the influence of impregnating ratio according to claim 1 and charcoal activation temperature to granular activated carbon absorption property is bigger,
And the influence of kneading temperature and impregnating ratio to granular activated carbon intensity is bigger, since the intensity of granular activated carbon is with impregnating ratio
Raising be in downward trend, and the amplitude declined is larger, therefore proposes using multiplicity reactivation agent method to prepare granular activated carbon.
3. the impregnating ratio according to claim 1 that phosphoric acid and sawdust can be reduced using composite activating agent, thus raising
The intensity of grain active carbon, while granular activated carbon absorption property can be improved in composite activating agent, therefore can be made using the method
Obtain the granular activated carbon that absorption property is good, intensity is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711246664.6A CN109867283A (en) | 2017-12-01 | 2017-12-01 | A kind of preparation method of phosphoric acid method granular activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711246664.6A CN109867283A (en) | 2017-12-01 | 2017-12-01 | A kind of preparation method of phosphoric acid method granular activated carbon |
Publications (1)
| Publication Number | Publication Date |
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| CN109867283A true CN109867283A (en) | 2019-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711246664.6A Withdrawn CN109867283A (en) | 2017-12-01 | 2017-12-01 | A kind of preparation method of phosphoric acid method granular activated carbon |
Country Status (1)
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| CN (1) | CN109867283A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713183A (en) * | 2019-08-15 | 2020-01-21 | 中国林业科学研究院林产化学工业研究所 | Molded granular activated carbon prepared from fast growing wood processing residues and preparation method thereof |
| CN112723585A (en) * | 2020-11-25 | 2021-04-30 | 浙江海拓环境技术有限公司 | Hypophosphite treatment reactor for realizing iodine recycling, and facility and method thereof |
-
2017
- 2017-12-01 CN CN201711246664.6A patent/CN109867283A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713183A (en) * | 2019-08-15 | 2020-01-21 | 中国林业科学研究院林产化学工业研究所 | Molded granular activated carbon prepared from fast growing wood processing residues and preparation method thereof |
| CN112723585A (en) * | 2020-11-25 | 2021-04-30 | 浙江海拓环境技术有限公司 | Hypophosphite treatment reactor for realizing iodine recycling, and facility and method thereof |
| CN112723585B (en) * | 2020-11-25 | 2022-08-19 | 浙江海拓环境技术有限公司 | Hypophosphite treatment reactor for realizing iodine recycling, and facility and method thereof |
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Application publication date: 20190611 |