CN106430180A - Activated carbon prepared on basis of hyperaccumulator biomass as well as preparation method and application - Google Patents
Activated carbon prepared on basis of hyperaccumulator biomass as well as preparation method and application Download PDFInfo
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- CN106430180A CN106430180A CN201610834454.8A CN201610834454A CN106430180A CN 106430180 A CN106430180 A CN 106430180A CN 201610834454 A CN201610834454 A CN 201610834454A CN 106430180 A CN106430180 A CN 106430180A
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- activated carbon
- preparation
- biomass
- dried
- heavy metal
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Cultivation Of Plants (AREA)
- Carbon And Carbon Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses activated carbon prepared on the basis of hyperaccumulator biomass. The activated carbon is prepared through the following steps: 1) Ni or/and Pb heavy metal enriched plant biomass is dried and broken; 2) granules obtained after breaking and a potassium carbonate aqueous solution are heated and stirred for activation, and the heating temperature is 50-90 DEG C; 3) the activated granules are heated to 800-900 DEG C from room temperature within 150-200 min in an argon atmosphere, kept for 100-120 min and cooled to the room temperature within 150-200 min, and the biomass is carbonized; 4) the carbonized biomass is dried, and a sodium borohydride solution is added dropwise in an ice-water bath for reduction; 5) a product is washed until the pH is neutral and is dried, and the activated carbon is prepared. The invention further discloses a preparation method of the biological activated carbon. The biological activated carbon can be used for soil improvement.
Description
Technical field
The present invention relates to a kind of high performance active carbon based on the preparation of over-accumulated plant Biomass.
The invention still further relates to the preparation method of above-mentioned activated carbon.
The invention still further relates to application in improved soil for the above-mentioned activated carbon right.
Background technology
In recent years, Heavy Metals In Environment problem increasingly increases, and seriously threatens animal and health, causes people's
Extensive concern.Compared with traditional physics and chemical remediation technology, phytoremediation technology is so that it is with low cost, to environmental disturbances
Little, easy and simple to handle, green, in situ and be easy to the advantages of accept for the public, cause the extensive concern of people, become current environment
The study hotspot in the field such as science and pollution ecology.Wherein, plant extract recovery technique utilizes in plant extract environment
Pollutant are simultaneously enriched in and can be gathered in position it is considered to be one of maximally efficient phytoremediation strategy.Plant extract is repaired
Heavy metal pollution of soil typically adopts two class plants：Super enriching plant and the mcroorganism amount rank vegetation, super enriching plant is generally raw
Thing amount is less, and the heavy metal accumulation ability of the mcroorganism amount rank vegetation is relatively low, and comparative study finds, mcroorganism amount fast-growing
Plant has the repair ability close with super enriching plant, has been even more than the repair ability of some super enriching plants.Absorb
The super enriching plant of heavy metal or the rank vegetation are removed by harvesting to after reaching the function of phytoremediation, how to solve a huge sum of money
The process disposal and resource problem that belong to enriching plant biomass are the important directions studied now.
Content of the invention
It is an object of the invention to provide a kind of high performance active carbon based on the preparation of over-accumulated plant Biomass.
It is yet another object of the invention to provide a kind of method preparing above-mentioned activated carbon.
For achieving the above object, the present invention provide activated carbon, be obtained by following methods：
1) plant biomass of enrichment of N i or/and Pb heavy metal is dried and crush；
2) granule after crushing is activated with wet chemical heated and stirred, and heating-up temperature is 50 DEG C -90 DEG C；
3) granule after activating, in argon gas atmosphere, rises to 800-900 DEG C from room temperature in 150-200min, keeps 100-
It is down to room temperature, by biomass carbonization in 120min, 150-200min；
4) charcoal after carbonization is dried, Deca sodium borohydride solution reduction under ice-water bath；
5) being washed to pH is that neutral post-drying is obtained activated carbon.
In described activated carbon, the plant of enrichment of N i or/and Pb heavy metal adds ferrous chloride in growth course, and
One of rhamnolipid and peroxophosphoric acid sodium.
In described activated carbon, potassium carbonate mass fraction is 30%-60%.
In described activated carbon, sodium borohydride solution concentration is 15-20mM.
The present invention provide the method preparing above-mentioned activated carbon be：
1) plant biomass of enrichment of N i or/and Pb heavy metal is dried and crush；
2) granule after crushing is activated with wet chemical heated and stirred, and heating-up temperature is 50 DEG C -90 DEG C；
3) granule after activating, in argon gas atmosphere, rises to 800-900 DEG C from room temperature in 150-200min, keeps 100-
It is down to room temperature, by biomass carbonization in 120min, 150-200min；
4) charcoal after carbonization is dried, Deca sodium borohydride solution reduction under ice-water bath；
5) being washed to pH is that neutral post-drying is obtained activated carbon.
In described preparation method, the plant of enrichment of N i or/and Pb heavy metal adds ferrous chloride in growth course, with
And one of rhamnolipid and peroxophosphoric acid sodium.
In described preparation method, potassium carbonate mass fraction is 30%-60%.
In described preparation method, sodium borohydride solution concentration is 15-20mM.
The present invention adopts the activated carbon of heavy metal accumulation plant biomass preparation, can effectively affect soil moisture and exist
Form, charcoal hole path improves soil moisture flow behavior, can discharge moisture in arid season, adjusts soil water-containing
Rate；The charcoal of preparation, in plum rain season, can pin moisture, slow down rainwater to soil erosion, retain nutrient substance in soil；
The charcoal of preparation can discharge moisture and nutrient substance, through root system of plant in growing process, improves plant growing
Speed and yield；Charcoal affects the microbial activity in soil.Heavy metal effectively can be latched in life by the charcoal of preparation
In thing Carbon fibe structure, not only avoid heavy metal element and be re-released into forming " secondary pollution " in environment, formed after activation
Possesses the green new material of the additional functions such as high strong capacitive, catalysis.Soil beneficial microbe colony activity recovery, makes soil have
Machine matter lifts 0.2-0.3% every year, and the organic health standards reaching 3% compared with traditional fertilization mode shorten 50 years.
Specific embodiment
The present invention is directed to the pollution of the heavy metal such as Ni or Pb in soil, adds 5mg/L-50mg/L's in growing process
Ferrous chloride and rhamnolipid or peroxophosphoric acid sodium, the plant biomass of the heavy metal such as enrichment of N i or Pb is dried to absolutely dry, according to need
Whole plant body is broken into the granule of particle diameter 3-5mm；
Plant granule after broken is activated for 30%-60% wet chemical heated and stirred with mass fraction,
Soak time 24h, heating-up temperature is 50 DEG C -90 DEG C, and the response time is 1h；
Plant granule after activation is placed in tubular type Muffle furnace, under conditions of logical full argon in tubular type Muffle furnace,
In 200min from room temperature 20 DEG C rise to 900 DEG C, keep being reduced to 20 DEG C from 900 DEG C in 900 DEG C of 120min, 200min, will give birth to
Material carbonization；
Charcoal is dried, in the environment of low temperature (ice-water bath), Deca concentration reduces for 20mM sodium borohydride solution；Go
Ion water washing is obtained the charcoal of activation to pH close to neutrality post-drying.
5) deionized water wash is obtained the charcoal of activation to pH close to neutrality post-drying.
The present embodiment adopts the charcoal of heavy metal accumulation plant biomass preparation, can effectively affect soil moisture and deposit
In form, charcoal hole path improves soil moisture flow behavior, can discharge moisture in arid season, adjusts soil and contains
Water rate is stablized in 20%-50%；The charcoal of preparation, in plum rain season, can pin moisture, slow down rainwater to soil erosion, protect
Stay nutrient substance in soil；The charcoal of preparation can discharge moisture and nutrient substance, through plant in growing process
Root system, improves 1.5-3.5 times of plant growth rate and yield 1.5-3.5 times；Charcoal affects the microbial activity in soil.System
Standby charcoal effectively can latch in heavy metal in charcoal fibre structure, not only avoid heavy metal element and again discharge
Form " secondary pollution " in environment, in soil, beneficial viable bacteria amount lifts 1～2 order of magnitude, reaches 10.0～11.0lg CFU/
g.
Claims (9)
1. a kind of activated carbon based on the preparation of over-accumulated plant biomass, is obtained by following methods：
1) plant biomass of enrichment of N i or/and Pb heavy metal is dried and crush；
2) granule after crushing is activated with wet chemical heated and stirred, and heating-up temperature is 50 DEG C -90 DEG C；
3) granule after activating, in argon gas atmosphere, rises to 800-900 DEG C from room temperature in 150-200min, keeps 100-
It is down to room temperature, by biomass carbonization in 120min, 150-200min；
4) charcoal after carbonization is dried, Deca sodium borohydride solution reduction under ice-water bath；
5) being washed to pH is that neutral post-drying is obtained activated carbon.
2. activated carbon according to claim 1, wherein, the plant of enrichment of N i or/and Pb heavy metal adds in growth course
Plus ferrous chloride, and one of rhamnolipid and peroxophosphoric acid sodium.
3. activated carbon according to claim 1, wherein, potassium carbonate mass fraction is 30%-60%.
4. activated carbon according to claim 1, wherein, sodium borohydride solution concentration is 15-20mM.
5. the preparation method of activated carbon described in claim 1：
1) plant biomass of enrichment of N i or/and Pb heavy metal is dried and crush；
2) granule after crushing is activated with wet chemical heated and stirred, and heating-up temperature is 50 DEG C -90 DEG C；
3) granule after activating, in argon gas atmosphere, rises to 800-900 DEG C from room temperature in 150-200min, keeps 100-
It is down to room temperature, by biomass carbonization in 120min, 150-200min；
4) charcoal after carbonization is dried, Deca sodium borohydride solution reduction under ice-water bath；
5) being washed to pH is that neutral post-drying is obtained activated carbon.
6. preparation method according to claim 5, wherein, the plant of enrichment of N i or/and Pb heavy metal is in growth course
Add ferrous chloride, and one of rhamnolipid and peroxophosphoric acid sodium.
7. preparation method according to claim 5, wherein, potassium carbonate mass fraction is 30%-60%.
8. preparation method according to claim 5, wherein, sodium borohydride solution concentration is 15-20mM.
9. application in improved soil for the activated carbon described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834454.8A CN106430180A (en) | 2016-09-20 | 2016-09-20 | Activated carbon prepared on basis of hyperaccumulator biomass as well as preparation method and application |
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| CN201610834454.8A CN106430180A (en) | 2016-09-20 | 2016-09-20 | Activated carbon prepared on basis of hyperaccumulator biomass as well as preparation method and application |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833691A (en) * | 2017-03-20 | 2017-06-13 | 华中农业大学 | Heavy metal cuts retracting device and method with energy element in heavy metal cutting |
| CN108002359A (en) * | 2017-11-03 | 2018-05-08 | 复旦大学 | A kind of method of hydrothermal liquefaction recycling heavy metal pollution rehabilitation plant |
| CN109368639A (en) * | 2018-12-05 | 2019-02-22 | 宁波设会物联网科技有限公司 | A kind of preparation method of environmental protection and the asphalt-base spherical activated carbon with pore structure |
| CN110898825A (en) * | 2019-12-13 | 2020-03-24 | 南京农业大学 | Heavy metal super-enriched biomass charcoal catalyst and preparation method and application thereof |
| CN111054312A (en) * | 2020-01-15 | 2020-04-24 | 中新曜昂环境修复(江苏)有限公司 | Preparation method of duckweed charcoal loaded nano zero-valent iron and method for repairing Pb pollutant soil |
| CN112159666A (en) * | 2020-10-10 | 2021-01-01 | 天津华勘环保科技有限公司 | Composite biological cleaning agent for nickel-polluted soil |
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| CN103484125A (en) * | 2013-10-14 | 2014-01-01 | 厦门大学 | Soil improvement agent and improvement method of heavy metal lead-contaminated soil |
| CN104841685A (en) * | 2015-05-20 | 2015-08-19 | 绍兴文理学院 | Method for stabilizing treatment of plants adsorbing or absorbing heavy metals |
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2016
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| CN103484125A (en) * | 2013-10-14 | 2014-01-01 | 厦门大学 | Soil improvement agent and improvement method of heavy metal lead-contaminated soil |
| CN104841685A (en) * | 2015-05-20 | 2015-08-19 | 绍兴文理学院 | Method for stabilizing treatment of plants adsorbing or absorbing heavy metals |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833691A (en) * | 2017-03-20 | 2017-06-13 | 华中农业大学 | Heavy metal cuts retracting device and method with energy element in heavy metal cutting |
| CN108002359A (en) * | 2017-11-03 | 2018-05-08 | 复旦大学 | A kind of method of hydrothermal liquefaction recycling heavy metal pollution rehabilitation plant |
| CN109368639A (en) * | 2018-12-05 | 2019-02-22 | 宁波设会物联网科技有限公司 | A kind of preparation method of environmental protection and the asphalt-base spherical activated carbon with pore structure |
| CN110898825A (en) * | 2019-12-13 | 2020-03-24 | 南京农业大学 | Heavy metal super-enriched biomass charcoal catalyst and preparation method and application thereof |
| CN111054312A (en) * | 2020-01-15 | 2020-04-24 | 中新曜昂环境修复(江苏)有限公司 | Preparation method of duckweed charcoal loaded nano zero-valent iron and method for repairing Pb pollutant soil |
| CN112159666A (en) * | 2020-10-10 | 2021-01-01 | 天津华勘环保科技有限公司 | Composite biological cleaning agent for nickel-polluted soil |
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Application publication date: 20170222 |