CN102992316A - Rice-husk-based active carbon processing technology - Google Patents
Rice-husk-based active carbon processing technology Download PDFInfo
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- CN102992316A CN102992316A CN2011102645623A CN201110264562A CN102992316A CN 102992316 A CN102992316 A CN 102992316A CN 2011102645623 A CN2011102645623 A CN 2011102645623A CN 201110264562 A CN201110264562 A CN 201110264562A CN 102992316 A CN102992316 A CN 102992316A
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- active carbon
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Abstract
The invention discloses a rice-husk-abased active carbon processing technology. The technology provided by the invention mainly comprises raw material washing, carbonization, and active carbon activation treatment. Main steps comprise: (1) rice husks are screened, rinsed and bake-dried; (2) the rice husks are carbonized; and (3) rice-husk-based active carbon is subjected to an activation treatment. When active carbon is produced with the method provided by the invention, active carbon production cost can be greatly reduced, and applications of active carbon in fields such as scientific research and environmental protection are promoted.
Description
Technical field
The present invention relates to a kind of complete processing of gac, relate in particular to a kind of complete processing of rice husk matrix activated carbon.
Background technology
Gac is large because of its specific surface area, loading capacity is high, is the sorbing material of commonly using.Its raw materials for production mainly contain non-renewable mineral coal, timber, shell etc., and these raw material supplies are limited, have restricted on the one hand the industrial scale of gac; Also be that gac is made the higher major reason of sorbent material cost on the other hand, and then restricted its application in field of waste water treatment.Therefore, seeking gac raw material cheap and easy to get, reduce the Activated Carbon Production cost, is the important measures that advance gac to use at field of Environment Protection.
Summary of the invention
The complete processing that the purpose of this invention is to provide a kind of rice husk matrix activated carbon, this method have solved the problem that current Activated Carbon Production cost is high, application is restricted.The cost that application the present invention produces gac can reduce greatly, can further promote it in the application of the aspects such as scientific research.
The complete processing of rice husk matrix activated carbon of the present invention may further comprise the steps:
A. raw material is processed, and uses the sodium hydroxide solution of 0.3-0.8 mol/L to soak 24 hours on the rice husk of cleaning, and then is washed till neutral and oven dry with pure water;
B. 35 mesh sieves are pulverized the rice husk of above-mentioned oven dry and cross in carbonization and activation, then mix at 1: 3 according to mass ratio with 85% phosphoric acid, then directly put into retort furnace 200-250 ℃ constant temperature 1 hour, are warming up to 500-600 ℃ of constant temperature 90 minutes again;
C. cleaning, drying after above-mentioned retort furnace cooling, are washed till pH ≈ 6 with firing product with pure water, put at last 120 ℃ of air dry ovens and dry, and can make finished product.
Use the complete processing of rice husk matrix activated carbon of the present invention, the beneficial effect that can reach is: the production cost of gac reduces greatly, the use of scientific research preferably, field of Environment Protection.
Embodiment
Below method of the present invention and feature are described, institute only gives an actual example and to be used for explanation the present invention, is not be used to limiting scope of the present invention.
A kind of complete processing of rice husk matrix activated carbon comprises the steps:
A. raw material is processed, and the sodium hydroxide solution of clean rice husk with 0.5 mol/L soaked 24 hours, then is washed till neutral and oven dry with pure water;
B. 35 mesh sieves are pulverized the rice husk of above-mentioned oven dry and cross in carbonization and activation, then mix at 1: 3 according to mass ratio with 85% phosphoric acid, then directly put into 220 ℃ of constant temperature of retort furnace 1 hour, are warming up to 550 ℃ of constant temperature 90 minutes again;
C. cleaning, drying after above-mentioned retort furnace cooling, are washed till pH ≈ 6 with firing product with pure water, put at last 120 ℃ of air dry ovens and dry, and can make finished product.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. the complete processing of a rice husk matrix activated carbon is characterized in that may further comprise the steps:
A. raw material is processed.Use the sodium hydroxide solution of 0.3-0.8 mol/L to soak 24 hours on the rice husk of cleaning, then be washed till neutral and oven dry with pure water;
B. carbonization and activation.The rice husk of above-mentioned oven dry is pulverized and crossed 35 mesh sieves, then mix at 1: 3 according to mass ratio with 85% phosphoric acid, then directly put into retort furnace 200-250 ℃ constant temperature 1 hour, be warming up to again 500-600 ℃ of constant temperature 90 minutes;
C. clean, drying.After above-mentioned retort furnace cooling, firing product is washed till pH ≈ 6 with pure water, put at last 120 ℃ of air dry ovens and dry, can make finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102645623A CN102992316A (en) | 2011-09-08 | 2011-09-08 | Rice-husk-based active carbon processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102645623A CN102992316A (en) | 2011-09-08 | 2011-09-08 | Rice-husk-based active carbon processing technology |
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| CN102992316A true CN102992316A (en) | 2013-03-27 |
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| CN2011102645623A Pending CN102992316A (en) | 2011-09-08 | 2011-09-08 | Rice-husk-based active carbon processing technology |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566880A (en) * | 2013-09-29 | 2014-02-12 | 安徽金叶炭素科技有限公司 | Rice hull modified active carbon adsorption desulfurizing agent and preparation method thereof |
| CN103936006A (en) * | 2014-04-21 | 2014-07-23 | 北京理工大学 | Method for preparing porous activated carbon material from rice bran |
| CN104150481A (en) * | 2014-08-25 | 2014-11-19 | 安徽工业大学 | Method for preparing mesoporous carbon material used for super capacitor from two carbon sources at the same time |
| CN105329879A (en) * | 2015-11-11 | 2016-02-17 | 安徽陆林农业科技开发有限公司 | Flax stem carbon preparing method |
| CN106984283A (en) * | 2017-02-16 | 2017-07-28 | 南京师范大学常州创新发展研究院 | The method for preparing biomass absorbent material under cryogenic conditions using rice husk |
-
2011
- 2011-09-08 CN CN2011102645623A patent/CN102992316A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566880A (en) * | 2013-09-29 | 2014-02-12 | 安徽金叶炭素科技有限公司 | Rice hull modified active carbon adsorption desulfurizing agent and preparation method thereof |
| CN103566880B (en) * | 2013-09-29 | 2016-01-27 | 安徽金叶炭素科技有限公司 | A kind of rice husk modified activated carbon adsorption desulfurizing agent and preparation method thereof |
| CN103936006A (en) * | 2014-04-21 | 2014-07-23 | 北京理工大学 | Method for preparing porous activated carbon material from rice bran |
| CN104150481A (en) * | 2014-08-25 | 2014-11-19 | 安徽工业大学 | Method for preparing mesoporous carbon material used for super capacitor from two carbon sources at the same time |
| CN105329879A (en) * | 2015-11-11 | 2016-02-17 | 安徽陆林农业科技开发有限公司 | Flax stem carbon preparing method |
| CN106984283A (en) * | 2017-02-16 | 2017-07-28 | 南京师范大学常州创新发展研究院 | The method for preparing biomass absorbent material under cryogenic conditions using rice husk |
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Application publication date: 20130327 |