CN103350998A - Method for preparing activated carbon through adopting white paeony root straws - Google Patents
Method for preparing activated carbon through adopting white paeony root straws Download PDFInfo
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- CN103350998A CN103350998A CN2013102988622A CN201310298862A CN103350998A CN 103350998 A CN103350998 A CN 103350998A CN 2013102988622 A CN2013102988622 A CN 2013102988622A CN 201310298862 A CN201310298862 A CN 201310298862A CN 103350998 A CN103350998 A CN 103350998A
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- root
- herbaceous peony
- activated carbon
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- straws
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Abstract
The invention discloses a method for preparing activated carbon through adopting white paeony root straws, which can be used for preparing activated carbon through impregnation, activation, washing and drying. The method includes the following steps: drying white paeony root straws, cutting the straws into small segments of 1-2 cm in length; performing impregnation, wherein during the impregnation, phosphoric acid solution with the mass concentration of 10-60% is taken as activator, the ratio of the mass (g) of white paeony root straws to the volume (ml) of the activator is 1:10-15, the impregnation time is 24-96 h, the heating activation temperature is 300-600 DEG C, and the activation time is 1-3 h; washing the obtained activated carbon after activation through distilled water until the PH value reaches 6-7, and then drying the activated carbon to obtain the white paeony root straw activated carbon. According to the invention, the activated carbon is prepared through white paeony root straws in virtue of the chemical methods, the preparing process is simple, the cost is low, environmental protection and high yield are realized; white paeony root straw activated carbon with larger specific surface area and stronger adsorbing capacity can be prepared through adopting the method.
Description
Technical field
The present invention relates to a kind of manufacture method of gac, particularly the method for the standby gac of a kind of root of herbaceous peony straw.
Background technology
Gac has special microlitic structure, flourishing minute aperture, higher specific surface area and adsorptive power, has been widely used in national defence, chemical industry, oil, weaving, food, medicine, nuclear industry, urban construction, environment protection and human lives's all respects.Contain a large amount of harmful, toxic substances in trade effluent, sanitary wastewater, municipal effluent, if the unprocessed rivers and lakes that just drain into will inevitably cause the pollution to environment, for the processing of these pollutents, industrial employing acticarbon takes off processing.Along with expanding economy, countries in the world are also increasing to the demand of gac, and the development prospect of gac is boundless.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing the standby gac of root of herbaceous peony straw, realize the recycling of root of herbaceous peony stalk waste material.
The present invention utilizes the method for the standby gac of a kind of root of herbaceous peony straw for achieving the above object, comprises the steps:
A. root of herbaceous peony stalk is removed dust impurity, 80 ~ 110
oThe C oven dry utilizes scissors to block into the segment of 1 ~ 2 cm;
B. after the resulting root of herbaceous peony stalk of step a being flooded in phosphoric acid solution, with for subsequent use behind its suction filtration.Activator phosphoric acid solution mass concentration is 10～60 %, and pretreated root of herbaceous peony stalk quality (g) is 1:10 ~ 15 with volume (ml) ratio of activator, and dipping time is 24 ~ 96 h;
C. the root of herbaceous peony stalk of suction filtration moves in the retort furnace after will flooding, and heat-activated, activation temperature are 300 ~ 600
oC, soak time are 1 ~ 3 h;
D. the root of herbaceous peony stalk after the activation is washed with distilled water to PH=6 ~ 7,100
oDry 5 h obtain root of herbaceous peony straw-stem active charcoal under the C.
The raw material sources of preparation gac are very extensive, be raw material from wood chip, coal, pitch, shell etc., the various contenting carbon materials such as the agriculture and forestry by-product that gets up to development in recent years, refinery coke, resol and many industrial wastes (waste tire, coal tar) that contain charcoal etc., the preparation of gac has had more novel preparation method on traditional preparation method's basis.
It is that raw material prepares gac that the present invention fully utilizes discarded root of herbaceous peony stalk, has both protected ecotope, has improved again the critical role of Chinese medicinal materials in economy.Also widened simultaneously the source channel of gac, to satisfy both at home and abroad to the ever-increasing market requirement of gac.Therefore have higher economy and social value.
Description of drawings
The specific surface area figure of gac when Fig. 1 activator is 50 % phosphoric acid solution
The specific surface area figure of gac when Fig. 2 activator is 30 % phosphoric acid solution
Embodiment
Below in conjunction with specific embodiment flesh and blood of the present invention is carried out further description.
The present invention is further elaborated below in conjunction with specific embodiment.But these embodiment only are not used in for explanation the present invention and limit the scope of the invention.
Yield among the embodiment of the present invention is the ratio of product quality and raw materials quality, and its formula is:
M wherein
Product, m
Raw materialBe expressed as respectively the quality of product and raw material.
Measure methylene blue adsorption value: with reference to the GB (mensuration of GB/T 12496.10-1999 wood activated charcoal methylene blue adsorption value.）
Embodiment 1
Root of herbaceous peony stalk is cleaned, removed behind dust and the impurity 80
oDry under the C, blocking is the section of 1 ~ 2 cm.Impregnated in the phosphoric acid solution of 30 % mass concentrations 20
oDipping 48 h under the C, impregnating ratio is 1:10.Behind the suction filtration, be placed in the retort furnace, in temperature 400
oActivation 3 h take out under the C condition, are washed with distilled water to PH=6 ~ 7,100
oDry 5 h obtain root of herbaceous peony straw-stem active charcoal under the C, and yield is 56 %, and measuring methylene blue adsorption value is 9.6 ml/0.1g.
Embodiment 2
Root of herbaceous peony stalk is cleaned, removed behind dust and the impurity 100
oDry under the C, blocking is the section of 1 ~ 2 cm.Impregnated in the phosphoric acid solution of 40 % mass concentrations 20
oDipping 72 h under the C, impregnating ratio is 1:15.Behind the suction filtration, be placed in the retort furnace, in temperature 500
oCharing 3 h under the C condition take out, and are washed with distilled water to PH=6 ~ 7,100
oDry 5 h obtain root of herbaceous peony straw-stem active charcoal under the C, and yield is 45 %, and measuring methylene blue adsorption value is 11.6 ml/0.1g.
Embodiment 3
Root of herbaceous peony stalk is cleaned, removed behind dust and the impurity 100
oDry under the C, blocking is the section of 1 ~ 2 cm.Impregnated in the phosphoric acid solution of 30 % mass concentrations 20
oDipping 48 h under the C, impregnating ratio is 1:10.Behind the suction filtration, be placed in the retort furnace, in temperature 300
oCharing 3 h under the C condition take out, and are washed with distilled water to PH=6 ~ 7,100
oDry 5 h obtain root of herbaceous peony straw-stem active charcoal under the C, and yield is 47 %, and measuring methylene blue adsorption value is 14.7 ml/0.1g.
Embodiment 4
Root of herbaceous peony stalk is cleaned, removed behind dust and the impurity 110
oDry under the C, blocking is the section of 1 ~ 2 cm.Impregnated in the phosphoric acid solution of 50 % mass concentrations 20
oDipping 72 h under the C, impregnating ratio is 1:15.Behind the suction filtration, be placed in the retort furnace, in temperature 400
oActivation 3 h take out under the C condition, are washed with distilled water to PH=6 ~ 7,100
oDry 5 h obtain root of herbaceous peony straw-stem active charcoal under the C, and its specific surface area (shown in Figure 1) can reach 677.7 m
2/ g(table 1), yield is 58 %, and measuring methylene blue adsorption value is 18.4 ml/0.1g(tables 1).
Table 1
| The sample sequence number | Surface-area (m 2/g） | Methylene blue adsorption value (ml/0.1g) |
| 1 | 677.7 | 18.4 |
| 2 | 353.4 | 8.7 |
Simultaneous test:
Root of herbaceous peony stalk is cleaned, removed behind dust and the impurity 110
oDry under the C, blocking is the section of 1 ~ 2 cm.Impregnated in the phosphoric acid solution of 30 % mass concentrations 20
oDipping 72 h under the C, impregnating ratio is 1:15.Behind the suction filtration, be placed in the retort furnace, in temperature 400
oActivation 3 h take out under the C condition, are washed with distilled water to PH=6 ~ 7,100
oDry 5 h obtain root of herbaceous peony straw-stem active charcoal under the C, and its specific surface area (Fig. 2) can reach 353.4 m
2/ g(table 1), yield is 48 %, and measuring methylene blue adsorption value is 8.7 ml/0.1g(tables 1).
The present invention utilizes the standby gac specific surface area of root of herbaceous peony straw large (Fig. 1), and yield is higher, has higher adsorptive power (table 1), surpasses national standard (mensuration of GB/T 12496.10-1999 wood activated charcoal methylene blue adsorption value).
Claims (4)
1. the method for the standby gac of root of herbaceous peony straw is characterized in that comprising the steps:
A. selecting root of herbaceous peony stalk is raw material, after the removal of impurities, 80 ~ 110
oThe C oven dry utilizes scissors to block into the segment of 1 ~ 2 cm;
B. the root of herbaceous peony stalk after will blocking floods in activator, and used activator is phosphoric acid solution, after the normal temperature activation, with for subsequent use behind its suction filtration;
C. the root of herbaceous peony stalk behind the dipping moves in the retort furnace heat-activated;
D. the root of herbaceous peony stalk after the activation is washed with distilled water to PH=6 ~ 7,100
oDry 5 h obtain root of herbaceous peony straw-stem active charcoal under the C.
2. the standby gac of a kind of root of herbaceous peony straw according to claim 1 is characterized in that the described raw material of step 1 (a) is the genuine root of herbaceous peony stalk of Bozhou City.
3. a kind of root of herbaceous peony straw according to claim 1 is for gac, it is characterized in that, the described activator phosphoric acid solution of step 1 (b) mass concentration is 10 ~ 60 %, pretreated root of herbaceous peony stalk quality (g) is 1:10 ~ 15 with volume (ml) ratio of activator, and soak time is 24 ~ 96 h.
4. the standby gac of a kind of root of herbaceous peony straw according to claim 1 is characterized in that the described activation temperature of step 1 (c) is 300 ~ 600
oC, soak time are 1 ~ 3 h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107539989A (en) * | 2017-08-04 | 2018-01-05 | 西南科技大学 | The recoverying and utilizing method and soil of monkshood stalk or the restorative procedure of water body |
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| CN101049930A (en) * | 2007-03-28 | 2007-10-10 | 淮阴师范学院 | Method for preparing active carbon from stalk of wheat |
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| JPS5187193A (en) * | 1975-01-30 | 1976-07-30 | Asahi Chemical Ind | |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107539989A (en) * | 2017-08-04 | 2018-01-05 | 西南科技大学 | The recoverying and utilizing method and soil of monkshood stalk or the restorative procedure of water body |
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Inventor after: Xia Youfu Inventor after: Wang Wenjian Inventor after: Li Tao Inventor after: Xie Yingjian Inventor before: Xia Youfu |
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Free format text: CORRECT: INVENTOR; FROM: XIA YOUFU TO: XIA YOUFU WANG WENJIAN LI TAO XIE YINGJIAN |
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Application publication date: 20131016 |