CN105797681A - Preparing method for micron/nano water-dispersible biochar - Google Patents
Preparing method for micron/nano water-dispersible biochar Download PDFInfo
- Publication number
- CN105797681A CN105797681A CN201610233102.7A CN201610233102A CN105797681A CN 105797681 A CN105797681 A CN 105797681A CN 201610233102 A CN201610233102 A CN 201610233102A CN 105797681 A CN105797681 A CN 105797681A
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- Prior art keywords
- charcoal
- water
- nano
- biochar
- dispersible
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- 238000000034 method Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000003610 charcoal Substances 0.000 claims description 79
- 239000006185 dispersion Substances 0.000 claims description 27
- 238000002360 preparation method Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005119 centrifugation Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000010902 straw Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000007603 infrared drying Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000002525 ultrasonication Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 3
- 239000000575 pesticide Substances 0.000 abstract description 3
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000005067 remediation Methods 0.000 abstract description 2
- 238000003900 soil pollution Methods 0.000 abstract description 2
- 239000000383 hazardous chemical Substances 0.000 abstract 1
- 239000011858 nanopowder Substances 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005899 aromatization reaction Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003738 black carbon Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
- Colloid Chemistry (AREA)
Abstract
The invention relates to a preparing method for micron/nano water-dispersible biochar.The preparing method includes the steps that blocky biochar is prepared through a pyrolysis method, smashed and ground into micron/nano powder, then put into water, ultrasonically treated and separated centrifugally to obtain the upper-lower layer micron/nano dispersible biochar stable and uniform.The prepared micron/nano water-dispersible biochar is low in cost, simple in process, easy to operate, good in stability and capable of being dispersed uniformly and has industrial application prospects.The prepared micron/nano water-dispersible biochar has good application prospects and potential application value in traditional application fields such as remediation of soil pollution, adsorption of heavy metal, pesticide and other hazardous substances and micro-element fertilizer and newly-developing fields such as a fuel cell, a capacitor and sensing analysis as an electrode modifying material.
Description
Technical field
The invention belongs to biological material application, relate to the preparation method that a kind of micro-/ nano water dispersibles charcoal.
Background technology
Charcoal (biochar) is the product formed after biomass imperfect combustion thermal cracking under anoxic conditions, broadly belongs to a kind of " black carbon ".Common charcoal includes Linesless charcoal, bamboo charcoal, straw charcoal, rice hull carbon etc..Charcoal has low solubility, the characteristic of high carboxylic esterification and aromatization structure, porosity, bigger serface, strong absorption affinity, resistance to oxidation and antibiont capacity of decomposition so that it is all have important using value in fields such as industrial or agricultural, the energy and environment.
Charcoal mainly applies two aspects: the carbon being to increase soil converges, and resists climate change, slows down greenhouse effect, alleviates climate crisis；Two are an up soil fertility, increase crop yield, reduce the pollution of heavy metal-polluted soil and pesticide, so as to have wide prospect in soil pollution reparation is applied.Recently, charcoal causes the extensive concern of the detection analysis fields such as fuel cell, capacitor equal energy source field and sensor as new material.But, charcoal is generally insoluble not to be melted, not there is solution machinability, be hardly formed uniform dispersion, in addition, it is big that charcoal also has particle diameter, the defects such as specific surface area is little, and absorbability is weak, filming performance difference, therefore, charcoal is modified preparing novel nano dispersible charcoal and be particularly important.Especially the scattered charcoal of micro-/ nano moisture can also reduce cost further.Although our previously passed dispersant and stabilizer improve the water of charcoal micro-/receive dispersibility, but the introducing of ektogenic adds its cost, how to directly obtain water and dispersibles micro-/charcoal of receiving and remain a problem.
Summary of the invention
It is an object of the invention to provide a kind of with low cost, technique is simple, the micro-/ nano water of mass production easy and simple to handle, easy dispersibles charcoal preparation method.
The preparation method that the micro-/ nano water of the present invention dispersibles charcoal, comprises the following steps:
(1) preparation of charcoal: adopt limit oxygen intensification carbonizatin method, after arbor or shrub or bamboo or the air-dry dry in the sun of straw, blast drier is dried, then pulverize in the container loading airtight full nitrogen, heat and keep 3-4 hour after 580-620 DEG C, take out and obtain charcoal (arbor charcoal, shrub arbor charcoal, bamboo charcoal, straw biological charcoal) after cooling；
(2) ultrasonication: the ratio obtaining charcoal and redistilled water after taking the mixing of 1-10g charcoal 100ml redistilled water is 1:100-1:10, adds in ultrasonic and circulated extraction machine, and circulation is extracted 1-5 hour, obtains charcoal water mixed dispersion liquid；
(3) centrifugation: take ultrasonic after charcoal water mixed dispersion liquid, use low speed centrifuge centrifugation, obtain up/down two-layer charcoal aqueous dispersion；
(4) concentration is dried: poured into respectively in container by the up/down two-layer charcoal aqueous dispersion obtained after centrifugal, it is placed in infrared drying oven, drying obtains up/down two-layer micro-/ nano water and dispersibles charcoal powder body, charcoal powder diameter after treatment is in the scope of several nanometers to ten microns, and the particle diameter of the upper strata powder finally given is less than lower floor；
(5) preparation of the aqueous dispersions of charcoal: weigh the upper and lower layer charcoal of 1-6mg respectively, be made into the water mixed liquid of 2ml with distilled water, obtain 0.5-3mg/ml charcoal aqueous dispersions, forms the charcoal aqueous dispersions that is uniformly dispersed after ultrasonic 30min.
Micro-/ nano water prepared by preparation method of the present invention dispersibles charcoal, the particle diameter on upper strata is less than the particle diameter of lower floor, up/down two-layer micro-/ nano water dispersibles charcoal powder body all can form aqueous dispersion, upper strata can form the aqueous dispersion of stable and uniform, and lower floor can be only formed uniform aqueous dispersion, and sink gradually over time, up/down two-layer micro-/ nano water dispersibles charcoal can be again dispersed by stirring or shaking.
The preparation method that the micro-/ nano water of the present invention dispersibles charcoal, there is the advantages such as with low cost, technique is simple, easy and simple to handle, easy mass production, prepared micro-/ nano water dispersibles charcoal and can be preferably applied for the noxious substance such as heavy metal and pesticide, in the tradition application such as soil remediation, micro-fertilizer, it is possible to as modified electrode materials application in emerging fields such as fuel cell, the storage of capacitor equal energy source and sensing analyses.
Accompanying drawing explanation
Fig. 1 is that micro-/ nano water dispersibles charcoal upper strata (A) and lower floor (B) electronic scanner microscope figure；
Fig. 2 is that micro-/ nano water dispersibles charcoal upper strata (A) and lower floor (B) transmission electron microscope figure.
Detailed description of the invention
The preparation method that a kind of micro-/ nano water dispersibles charcoal, comprises the following steps:
(1) preparation of charcoal: adopt limit oxygen intensification carbonizatin method, dries arbor or shrub or bamboo or the air-dry dry in the sun of straw 12 hours at 90 DEG C of blast driers after one day；Then pulverize in the tank loading airtight full nitrogen, in Muffle furnace, heat after 600 DEG C maintenance 3 hours；Take out and obtain charcoal (arbor charcoal, shrub arbor charcoal, bamboo charcoal, straw biological charcoal) after cooling.
(2) ultrasonication: the ratio obtaining charcoal and redistilled water after taking the mixing of 1-10g charcoal 100mL redistilled water is 1:100-1:10, add in ultrasonic and circulated extraction machine, ultrasonic power is 900W, and circulation obtains charcoal water mixed dispersion liquid after extracting 1-5 hour.
(3) centrifugation: take ultrasonic after charcoal water mixed dispersion liquid, use the 4000 revs/min of centrifugations of low speed centrifuge rotating speed, obtain up/down two-layer charcoal aqueous dispersion.
(4) concentration is dried: is poured in heavy-walled glass bottle by the charcoal water mixed liquid obtained after centrifugal respectively, is placed in infrared drying oven, dries and obtains up/down two-layer micro-/ nano water and dispersible charcoal powder body.
(5) preparation of the aqueous dispersions of charcoal: weigh the upper and lower layer charcoal of 1-6mg respectively, be made into the water mixed liquid of 2mL with distilled water, obtain 0.5-3mg/mL charcoal aqueous dispersions, forms the charcoal aqueous dispersions that is uniformly dispersed after ultrasonic 30min.Upper strata charcoal aqueous dispersion has reasonable dispersion stabilization (can maintain at least two weeks), and lower floor's charcoal dispersion stabilization is poor.Sinking gradually over time, stirring or concussion can be again dispersed (just can see that precipitation after 1 hour).
Claims (3)
1. the preparation method that a micro-/ nano water dispersibles charcoal, it is characterised in that: it comprises the following steps:
(1) preparation of charcoal: after arbor or shrub or bamboo or the air-dry dry in the sun of straw, dries in blast drier, then pulverizes in the container loading airtight full nitrogen, heats and keep 3-4 hour after 580-620 DEG C, take out after cooling and obtain charcoal；
(2) ultrasonication: the ratio obtaining charcoal and redistilled water after taking the above-mentioned charcoal 100ml redistilled water mixing of 1-10g is 1:100-1:10, adds in ultrasonic and circulated extraction machine, and circulation is extracted 1-5 hour, obtains charcoal water mixed dispersion liquid；
(3) centrifugation: take ultrasonic after charcoal water mixed dispersion liquid, use low speed centrifuge centrifugation, obtain up/down two-layer charcoal aqueous dispersion；
(4) concentration is dried: is poured into respectively in container by the up/down two-layer charcoal aqueous dispersion obtained after centrifugal, is placed in infrared drying oven, dries and obtains up/down two-layer micro-/ nano water and dispersible charcoal powder body.
2. the preparation method that micro-/ nano water according to claim 1 dispersibles charcoal, it is characterised in that: described low speed centrifuge adopts 4000 revs/min of centrifugations of rotating speed.
3. the preparation method of the aqueous dispersions of a charcoal, it is characterized in that: weigh the upper and lower layer charcoal 1-6mg that preparation method as claimed in claim 1 prepares respectively, the water mixed liquid of 2ml it is made into distilled water, obtain 0.5-3mg/ml charcoal aqueous dispersions, after ultrasonic 30min, form the charcoal aqueous dispersions that is uniformly dispersed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233102.7A CN105797681B (en) | 2016-04-15 | 2016-04-15 | The preparation method of the dispersible charcoal of micro-/ nano water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233102.7A CN105797681B (en) | 2016-04-15 | 2016-04-15 | The preparation method of the dispersible charcoal of micro-/ nano water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105797681A true CN105797681A (en) | 2016-07-27 |
| CN105797681B CN105797681B (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610233102.7A Active CN105797681B (en) | 2016-04-15 | 2016-04-15 | The preparation method of the dispersible charcoal of micro-/ nano water |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505023A (en) * | 2018-11-21 | 2019-03-22 | 广东柏堡龙股份有限公司 | A kind of function intensified modification biological charcoal/polyester complex fiber and preparation method thereof |
| CN112827469A (en) * | 2021-01-08 | 2021-05-25 | 江西农业大学 | Preparation method of litsea cubeba nuclear-based magnetic activated carbon and application of litsea cubeba nuclear-based magnetic activated carbon in dye wastewater treatment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949212A (en) * | 2014-04-11 | 2014-07-30 | 上海交通大学 | Preparation method of biomass-based magnetic biochar |
| CN105259234A (en) * | 2015-11-06 | 2016-01-20 | 江西农业大学 | Preparation method for sensitive electrode based on pond pine charcoal |
-
2016
- 2016-04-15 CN CN201610233102.7A patent/CN105797681B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949212A (en) * | 2014-04-11 | 2014-07-30 | 上海交通大学 | Preparation method of biomass-based magnetic biochar |
| CN105259234A (en) * | 2015-11-06 | 2016-01-20 | 江西农业大学 | Preparation method for sensitive electrode based on pond pine charcoal |
Non-Patent Citations (2)
| Title |
|---|
| DENGJUN WANG ET AL.: "Transport of Biochar Particles in Saturated Granular Media: Effects of Pyrolysis Temperature and Particle Size", 《ENVIRONMENTAL SCIENCE & TECHNOLOGY》 * |
| WENYAN LI ET AL.: "Enhancement of water solubility and mobility of phenanthrene by natural soil nanoparticles", 《ENVIRONMENTAL POLLUTION》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505023A (en) * | 2018-11-21 | 2019-03-22 | 广东柏堡龙股份有限公司 | A kind of function intensified modification biological charcoal/polyester complex fiber and preparation method thereof |
| CN112827469A (en) * | 2021-01-08 | 2021-05-25 | 江西农业大学 | Preparation method of litsea cubeba nuclear-based magnetic activated carbon and application of litsea cubeba nuclear-based magnetic activated carbon in dye wastewater treatment |
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| Publication number | Publication date |
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| CN105797681B (en) | 2018-07-13 |
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Inventor after: Wen Yangping Inventor after: Liu Guangbin Inventor after: Li Linjian Inventor after: Wang Xiaoqiang Inventor after: Liao Xiaoning Inventor after: Li Mingfang Inventor before: Wen Yangping Inventor before: Liu Guangbin Inventor before: Li Linjian Inventor before: Wang Xiaoqiang Inventor before: Liao Xiaoning Inventor before: Li Mingfang |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200927 Address after: 330000 room 452, building 1, No. 5, changnanyuan 5th Road, Changnan Industrial Park, Qingyunpu District, Nanchang City, Jiangxi Province Patentee after: Jiangxi praefeng Ecological Technology Co.,Ltd. Address before: 1101 No. 330045 Jiangxi city of Nanchang province Zhimin Road Economic Development Zone Patentee before: JIANGXI AGRICULTURAL University |
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Denomination of invention: Preparation method of micro / nano water dispersible biochar Effective date of registration: 20220126 Granted publication date: 20180713 Pledgee: Jiangxi branch of Bank of China Ltd. Pledgor: Jiangxi praefeng Ecological Technology Co.,Ltd. Registration number: Y2022980001204 |
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Date of cancellation: 20230328 Granted publication date: 20180713 Pledgee: Jiangxi branch of Bank of China Ltd. Pledgor: Jiangxi praefeng Ecological Technology Co.,Ltd. Registration number: Y2022980001204 |
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