CN103213982B - Method for preparing activated carbon by carrying out microwave irradiation on banana straws - Google Patents
Method for preparing activated carbon by carrying out microwave irradiation on banana straws Download PDFInfo
- Publication number
- CN103213982B CN103213982B CN201310153494.2A CN201310153494A CN103213982B CN 103213982 B CN103213982 B CN 103213982B CN 201310153494 A CN201310153494 A CN 201310153494A CN 103213982 B CN103213982 B CN 103213982B
- Authority
- CN
- China
- Prior art keywords
- activated carbon
- banana stem
- quality
- calcium chloride
- zinc chloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 235000018290 Musa x paradisiaca Nutrition 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000010902 straw Substances 0.000 title abstract 3
- 240000005561 Musa balbisiana Species 0.000 title 1
- 241000234295 Musa Species 0.000 claims abstract description 25
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000011592 zinc chloride Substances 0.000 claims abstract description 11
- 235000005074 zinc chloride Nutrition 0.000 claims abstract description 11
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000001110 calcium chloride Substances 0.000 claims abstract description 9
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 9
- 238000002791 soaking Methods 0.000 claims abstract description 7
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000008367 deionised water Substances 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 3
- 229910052740 iodine Inorganic materials 0.000 claims description 3
- 239000011630 iodine Substances 0.000 claims description 3
- 229960000907 methylthioninium chloride Drugs 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 238000004061 bleaching Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910021641 deionized water Inorganic materials 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000009969 flowable effect Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a method for preparing activated carbon by carrying out microwave irradiation on banana straws. The method comprises the steps of: cutting air-dried banana straws into small sections, soaking with zinc chloride/calcium chloride mixing solution, fishing up and drying without water drops, performing microwave irradiation, soaking with acid solution, taking out for draining, bleaching with deionized water and drying, cooling to room temperature, and crushing to obtain activated carbon. The activated carbon prepared by using the method achieves the methylthionine chloride decolorizing capacity of 16-25mL/0.1g which is greatly higher than that of the national standard high-quality activated carbon. Furthermore, wastes of agricultural products are utilized, so that the added value of the agricultural products can be improved, the environment protection pressure can be effectively reduced, and the method is simple in technique, short in flow and favorable for popularization.
Description
Technical field
The present invention relates to a kind of microwave exposure banana stem and prepare the method for gac.
Background technology
Banana is a kind of very important subtropical fruit, has special economic worth.After annual results banana, the stem stalk of banana just becomes waste material.Because any of several broadleaf plants stem stalk fiber is long, contain large quantity of moisture, not perishable, composing environment pollutes.How banana stem waste material is carried out to comprehensive exploitation, to improve the added value of farm crop, be the problem that a lot of researchists inquire into always.
Gac has flourishing pore texture, owing to having huge surface-area and good absorption property, at a lot of industrial sphere of lifes, is used widely, and progressively comes into daily life.See theoretically, any carbonaceous material can be served as gac raw material, but due to raw material and the very large difference of production technique existence, industrial main raw materials is superpolymer.Along with activated carbon application scope constantly expands, not only need to have cheap, the general greatly and widely gac of consumption, also need high quality, possess the gac of special purpose, also require the production development of gac to energy-conservation, efficient and environmental protection future development, gac has huge development potentiality.
In industrial production, the selection of raw material is extremely important.Should consider raw material taste, consider that again can raw material supply meet industrialized needs, also should consider its economic benefit.Current most of shell and agriculture and forestry organic waste material are often dropped field, or are burned and cause topsoil, and this not only destroys ecotope, and has wasted operational resource, unfavorable to China's sustained economic development.Therefore, need constantly to find the new raw material sources of gac, inquire into novel process, increase new variety, expand the Application Areas of gac.
Microwave Radiation in Manufacturing is widely applied preparing gac field.It is by heated object internal dipole molecule high-frequency reciprocating power, produce internal friction heat and heated temperature of charge is raise, must any heat transfer process, just can make material inside and outside portion heat simultaneously, heat up simultaneously, rate of heating is fast, evenly, only needs part or 1/tens heats of traditional heating mode just can reach heating object.Based on the feature of microwave heating, the present invention in the gac preparation of banana stem, utilizes banana stem production gac both quick, energy-conservation in the hope of reaching applied microwave technology, is more convenient for realizing automatization control.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method that microwave exposure banana stem is prepared gac, to reduce environmental pollution, low-carbon emission, improves the added value of agricultural byproducts, is beneficial to sustained economic development.
The present invention solves the problems of the technologies described above with following technical scheme:
Step of preparation process:
1. get air-dry banana stem, be dried, be cut to the segment of length 3-5cm, with volumetric ratio 6-8 zinc chloride/calcium chloride mixed liquid dipping doubly, soaking temperature is controlled at 40-50 DEG C, and the time is 40-48h;
2. take out and dry to without after dripping, put into crucible and carry out microwave exposure, irradiation power is 750w-1000w, and the time is 25-40 minute;
3. be cooled to after room temperature, with the dilute hydrochloric acid immersion 1-4h of mass concentration 2-5%;
4., after taking-up drains, by washed with de-ionized water, making its pH value is 7;
5. by the material rebake 3-5h obtaining, temperature is controlled at 110-120 DEG C;
6. be cooled to room temperature, obtain Powdered Activated Carbon.
After raw material banana stem natural wind dry doubling is dry, require to reach following quality index: quality is than moisture≤12%; Quality is than volatility≤70%; Quality is than fixed carbon >=15%; Quality is than ash content≤3%.
Soaking banana stem volumetric molar concentration used is zinc chloride 3mol/L, and calcium chloride is 1mol/L.
Require the zinc chloride quality of soaking banana stem than purity >=90%, calcium chloride quality is than purity >=95%; Within the time of zinc chloride and calcium chloride mixed liquid dipping banana stem, each stirring once in the time of 12h and 36h, each 3-5 minute.
The active carbon finished products of making, iodine sorption value reaches the standard-required of GB/T12496.8-1999, and methylene blue adsorption value reaches the technical requirements of GB/T12491.10-1999.
Prepare gac by method of the present invention, the gac of gained, at Methylene blue adsorption 16-25mL/0.1g, is much higher than national standard high grade activated carbon.And utilized the waste of agricultural-food, and improve the added value of agricultural-food, effectively reduce the pressure of protection of the environment, and technique is simpler, flow process is short, is beneficial to popularization.
Embodiment
The present invention is the compound method of making powdered carbon that banana stem is soaked of the inner heating of a kind of microwave exposure, application zinc chloride and calcium chloride solution.Feature of the present invention be quick, energy-conservation, be convenient to automatization control, substantially overcome that traditional efficiency of utilization while only using zinc chloride process is low, labour intensity large, the problem of work under bad environment, blowdown wretched insufficiency; The method of the Activated Carbon Production of be that a kind of technical requirements is low, high production, disposal of pollutants are less, meanwhile, also for solving banana waste material outlet, improve comprehensive benefit a kind of new approach be provided.
The present invention proposes to utilize banana stem for raw material, utilizes Fuzzy Hierarchy Method to control and produces activated carbon process parameter, produces gac with single stage method carbonization, and the gac of making meets national technical standard.
Embodiment 1:
Embodiment 2:
Embodiment 3:
The leading indicator of the activated carbon product of embodiment 1 is:
| CTC adsorptive value (%) | 100-140% |
| Benzene absorption (%) | 45-65% |
| Iodine sorption value (mg/g) | 1100-1300 |
| Specific surface area (m 2/g） | 1400-2400 |
| Apparent density (g/ml) | 0.33-0.38 |
| Point of ignition (DEG C) | 400-450 |
| Intensity (%) | 95-99.9% |
| Ash content (%) | 3-6 |
| Moisture is less than (%) | 5 |
| Granularity (mesh) scope | 1-4mm |
Claims (1)
1. microwave exposure banana stem is prepared a method for gac, it is characterized in that step of preparation process is:
(1) get air-dry banana stem, be dried, be cut to the segment of length 3-5cm, with volumetric ratio 6-8 zinc chloride/calcium chloride mixed liquid dipping doubly, soaking temperature is controlled at 40-50 DEG C, and the time is 40-48h;
(2) take out and dry to without after dripping, put into crucible and carry out microwave exposure, irradiation power is 750w-1000w, and the time is 25-40 minute;
(3) be cooled to after room temperature, with the dilute hydrochloric acid immersion 1-4h of volumetric concentration 2-5%;
(4), after taking-up drains, by washed with de-ionized water, making its pH value is 7;
(5) by the material rebake 3-5h obtaining, temperature is controlled at 110-120 DEG C;
(6) be cooled to room temperature, obtain Powdered Activated Carbon;
Wherein:
After raw material banana stem natural wind dry doubling is dry, require to reach following quality index: quality is than moisture≤12%; Quality is than volatility≤70%; Quality is than fixed carbon >=15%; Quality is than ash content≤3%;
Soaking banana stem volumetric molar concentration used is zinc chloride 3mol/L, and calcium chloride is 1mol/L;
Require to soak zinc chloride purity >=90% of banana stem, calcium chloride purity >=95%; Within the time of zinc chloride and calcium chloride mixed liquid dipping banana stem, each stirring once in the time of 12h and 36h, each 3-5 minute;
The active carbon finished products of making, iodine sorption value reaches the standard-required of GB/T12496.8-1999, and methylene blue adsorption value reaches the technical requirements of GB/T12491.10-1999.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310153494.2A CN103213982B (en) | 2013-04-28 | 2013-04-28 | Method for preparing activated carbon by carrying out microwave irradiation on banana straws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310153494.2A CN103213982B (en) | 2013-04-28 | 2013-04-28 | Method for preparing activated carbon by carrying out microwave irradiation on banana straws |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103213982A CN103213982A (en) | 2013-07-24 |
| CN103213982B true CN103213982B (en) | 2014-12-03 |
Family
ID=48812213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310153494.2A Expired - Fee Related CN103213982B (en) | 2013-04-28 | 2013-04-28 | Method for preparing activated carbon by carrying out microwave irradiation on banana straws |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103213982B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922433B (en) * | 2014-03-13 | 2016-01-20 | 北京工业大学 | The method of Reactive Brilliant Blue KN-R dyestuff in waste water removed by a kind of nut-shell biomass charcoal sorbent material |
| CN104724703A (en) * | 2015-03-20 | 2015-06-24 | 福州大学 | Method for preparing adsorptive activated carbon from Musaceae plants |
| CN107262030A (en) * | 2017-06-28 | 2017-10-20 | 桂林理工大学 | A kind of preparation method of modified banana stalk biomass carbon |
| CN108033447B (en) * | 2017-12-07 | 2021-06-15 | 吉林大学 | Preparation method of porous biomass carbon, porous biomass carbon and application |
| CN108940202A (en) * | 2018-08-02 | 2018-12-07 | 广东石油化工学院 | Application of the banana stem active carbon in absorption Amoxicillin |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289183A (en) * | 2008-06-04 | 2008-10-22 | 天津大学 | Method for preparing starch based active carbon microballoons with high specific surface area |
| CN102826548A (en) * | 2012-09-26 | 2012-12-19 | 玉林师范学院 | Banana tree base activated carbon and preparation method thereof |
-
2013
- 2013-04-28 CN CN201310153494.2A patent/CN103213982B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289183A (en) * | 2008-06-04 | 2008-10-22 | 天津大学 | Method for preparing starch based active carbon microballoons with high specific surface area |
| CN102826548A (en) * | 2012-09-26 | 2012-12-19 | 玉林师范学院 | Banana tree base activated carbon and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103213982A (en) | 2013-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103213982B (en) | Method for preparing activated carbon by carrying out microwave irradiation on banana straws | |
| US10633588B2 (en) | Preparation and use of slow-release iron-based biochar soil heavy metal passivator | |
| CN109264716B (en) | Easily-controlled preparation process of biomass framework carbon with micropore-mesopore structure and high specific surface area | |
| CN103318885A (en) | Method for preparing activated carbon from pomelo peels | |
| CN103121677B (en) | Method for preparing activated carbon by using banana tree trunk | |
| CN102633259A (en) | Preparation method for jute-based active carbon | |
| CN109320374A (en) | A kind of production method of charcoal base slow-release compound fertilizer | |
| CN111215031B (en) | Preparation method of high-purity biochar | |
| CN106744789A (en) | A kind of utilization lignin prepares porous charcoal and the application in ultracapacitor | |
| CN107459042A (en) | A kind of method that template-free method prepares three-dimensional multistage duct activated carbon | |
| CN104140334B (en) | The production method of vermiculite compression Nutrition Soil | |
| CN106862585A (en) | It is a kind of to prepare CaCO by template of egg-shell meal3The method of Ag composites | |
| CN106673896A (en) | Lotus leaf carbon based fertilizer and preparation method thereof | |
| CN106865523A (en) | A kind of preparation method and applications of the improvement hydro-thermal charcoal of alleviation rice field ammonia volatilization discharge | |
| CN102826548A (en) | Banana tree base activated carbon and preparation method thereof | |
| CN106865543B (en) | A kind of cotton stalk anaerobic steam charing method | |
| CN103318884A (en) | Method for preparing activated carbon from cassava stalks | |
| CN106431751A (en) | Biochar fertilizer capable of reducing heavy metal pollution of soil and preparation method thereof | |
| CN104109041B (en) | The production method of illite/smectite mixed layer clay compression Nutrition Soil | |
| CN108855033A (en) | The method for preparing porous nano-sheet three-dimensional zinc oxide catalysis material as template using shaddock endothelium | |
| CN104109042A (en) | Production method of compressed nutrition soil of illite smectite mixed-layer clay tailing | |
| CN102838114A (en) | Method for fast preparing straw-based active carbon | |
| CN104150974A (en) | Soil conditioner for preventing and treating tobacco bacterial wilt and application thereof | |
| CN104109039B (en) | The production method of sepiolite compression nutrition soil | |
| CN103262691B (en) | Method for accelerating germination of shiny-leaved yellowhorn |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |