CN107011906A - A kind of hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent and preparation method thereof - Google Patents
A kind of hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent and preparation method thereof Download PDFInfo
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- CN107011906A CN107011906A CN201710183479.0A CN201710183479A CN107011906A CN 107011906 A CN107011906 A CN 107011906A CN 201710183479 A CN201710183479 A CN 201710183479A CN 107011906 A CN107011906 A CN 107011906A
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- 239000002689 soil Substances 0.000 title claims abstract description 70
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 54
- 239000003610 charcoal Substances 0.000 title claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 48
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002028 Biomass Substances 0.000 claims abstract description 33
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 23
- 239000000292 calcium oxide Substances 0.000 claims abstract description 20
- 210000003608 fece Anatomy 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000010813 municipal solid waste Substances 0.000 claims description 9
- 244000144972 livestock Species 0.000 claims description 8
- 244000144977 poultry Species 0.000 claims description 8
- 238000010411 cooking Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 238000003763 carbonization Methods 0.000 claims description 3
- 238000009418 renovation Methods 0.000 abstract description 24
- 238000002161 passivation Methods 0.000 abstract description 10
- 238000001027 hydrothermal synthesis Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 12
- 125000000524 functional group Chemical group 0.000 description 11
- 229910052793 cadmium Inorganic materials 0.000 description 10
- 229910052745 lead Inorganic materials 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 8
- 238000000197 pyrolysis Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000010871 livestock manure Substances 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000010902 straw Substances 0.000 description 4
- 244000178993 Brassica juncea Species 0.000 description 3
- -1 aldehyde radical Chemical class 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000005067 remediation Methods 0.000 description 3
- 235000005855 Brassica juncea var. subintegrifolia Nutrition 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 238000010335 hydrothermal treatment Methods 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
- 125000000686 lactone group Chemical group 0.000 description 2
- 235000009973 maize Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000011332 Brassica juncea Nutrition 0.000 description 1
- 235000014700 Brassica juncea var napiformis Nutrition 0.000 description 1
- 244000089742 Citrus aurantifolia Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006606 decarbonylation reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000004016 soil organic matter Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/06—Calcium compounds, e.g. lime
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention combines that China heavy metal pollution of soil is serious and present situation of rural area abandoned biomass enormous amount, a kind of new technology for being applied to prepare environment-friendly hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent by raw material of abandoned biomass is established, is comprised the following steps：1) abandoned biomass hydro-thermal process is converted into hydro-thermal charcoal；2) a certain amount of quick lime is added in hydro-thermal charcoal it is sufficiently mixed and produces.The hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent that the present invention is prepared using abandoned biomass can realize the efficient in-situ passivation of various heavy in soil simultaneously, effectively block heavy metal to enter the path of crop；The renovation agent has green, environmental protection, lower-price characteristic simultaneously.
Description
Technical field
Disposed the present invention relates to abandoned biomass processing, belong to the solid waste of environmental protection and comprehensive utilization of resources field
Thing recycling new technology, is particularly suitable for the height of the abandoned biomass such as the stalk, feces of livestock and poultry, rubbish from cooking of enormous amount
Added value recycling.
Background technology
The waste residue that industrial and mining enterprises largely discharge, the sewage irrigation of Agricultural Activities and livestock and poultry cultivation etc. have resulted in China
The serious heavy metal pollution of farmland arable soil.Cause food-safety problems such as " cadmium rice " " heavy metal vegetables " by polluting arable land
Seriously threaten the healthy of the mankind.At present, the in-situ immobilization of the heavy metal pollution arable soil of engineer applied is mainly used
The method of phytoremediation, exist repair time it is long the shortcomings of, in addition, the plant of heavy metal accumulation processing disposal there is also secondary
The risk of environmental pollution.It is China to find renewable, cheap, the efficient quick restoration of soil polluted by heavy metal of soil in-situ renovation agent
One of significant challenge faced.On the other hand, China produces a large amount of abandoned biomass such as stalk, feces of livestock and poultry, food waste rubbish every year
Rubbish etc., it is not in time or incorrect processing has had resulted in serious environmental pollution.Biomass energy is can uniquely to provide to contain
The regenerative resource of carbon products in kind.Abandoned biomass is converted into charing functional material time field to use, with important reality
Meaning.The present invention prepares hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent by raw material of reproducible abandoned biomass,
While improving soil remediation efficiency, reduction soil-repairing agent production cost also for a large amount of abandoned biomass have found one it is capable it
Effective high value added utilization technology.
The content of the invention
The present invention is serious for China's heavy metal pollution of soil, existing heavy-metal contaminated soil in-situ immobilization agent efficiency is low,
The present situations such as time length, with reference to the resourceful advantage of China's abandoned biomass, establish one kind using abandoned biomass as raw material system
The new technology of standby hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent.Concrete technology includes：By abandoned biomass with certain
Under the conditions of be converted into hydro-thermal charcoal, hydro-thermal charcoal and quick lime are mixed according to certain ratio.
A kind of preparation method of hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent, it is characterised in that：By waste biomass
Matter is converted into hydro-thermal charcoal by hydro-thermal charing, then mixes hydro-thermal charcoal according to a certain percentage with quick lime, prepares described
Heavy-metal contaminated soil in-situ immobilization agent.
Described hydro-thermal carbonization is first to mix abandoned biomass with water, carries out hydro-thermal charing process, is prepared into
The weight ratio of hydro-thermal charcoal, abandoned biomass butt weight and water is 1:1-1:10.
In described hydro-thermal charing process step, hydrothermal temperature is 180-220 DEG C, and hydrothermal conditions are 40-90min.
Described hydro-thermal charcoal is with quick lime with 1:1-10:1 is sufficiently mixed.
Described abandoned biomass is stalk, feces of livestock and poultry and/or rubbish from cooking etc..
The hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent that above-mentioned preparation method is prepared.
Thus obtained soil in-situ renovation agent can realize the efficient in-situ passivation of various heavy in contaminated soil, have
Effect blocks heavy metal into the path of crop.The preparation effect of the technique is by hydro-thermal charcoal preparation temperature, hydro-thermal charcoal preparation time, life
The influence of the factors such as the addition of lime.
Advantages of the present invention is as follows：
Biomass water heat treatment is converted into hydro-thermal charcoal.In abandoned biomass hydrothermal treatment process, part is organic in biomass
The hydrolysis dissolution of matter causes hydro-thermal charcoal to have pore structure；Other hydro-thermal process can introduce abundant polarity in hydro-thermal carbon surface simultaneously
Functional group's (such as phenolic hydroxyl group, carboxyl, aldehyde radical, lactone group), these polar functional groups can not only be sent out with the heavy metal in soil
Raw coordination chelatropic reaction, and also with the heavy metal ion in soil oxygen can occur for some functional groups such as aldehyde radical with reproducibility
Change reduction reaction so as to change the occurrence patterns of heavy metal in soil, realize the in-situ passivation of heavy metal.In addition, polar functional group
The interface interaction of hydro-thermal charcoal and soil can be strengthened, exchanged beneficial to matter and energy occurs between hydro-thermal charcoal and soil.Although
Abandoned biomass is prepared into pyrolysis charcoal as the report of soil-repairing agent by pyrolysis charring, but is due to be pyrolyzed
Thoroughly it is dehydrated and decarbonylation reaction in journey, causes the polar functional group on the surface of pyrolysis charcoal very rare, therefore, pyrolysis life
Thing charcoal only exists very weak physical action, and nonpolar pyrolysis charcoal and soil polar interfacial with heavy metal in soil
Effect is very faint, therefore, and pyrolysis charcoal heavy metal contaminated soil remediation effect is very limited.At hydro-thermal process and pyrolysis
Influence of the reason to biological surface functional group is as shown in Figure 1.
The mixed proportion of abandoned biomass (butt) and water is preferably 1 in water-heat process:1-1:Between 10.Water addition is too
It is low can because hydro-thermal reaction system self-generated pressure is too small and it is biomass carbonated not thorough to cause, and too high water addition can cause
The energy consumption of hydrothermal treatment process is greatly increased.
The temperature of hydro-thermal process is preferably between 180 degree between 220 degree, and processing time is 40-90 minutes.Too low temperature
The too short time not exclusively hydro-thermal charcoal pore structure can be caused undeveloped because of biomass carbonated reaction and surface functional group does not enrich；
And too high reaction temperature and too long of reaction time can cause biomass to cause hydro-thermal charcoal yield too because of excessive carbonization reaction
Low, pore structure is caved in and surface functional group comes off.Additionally, it is preferred that under the conditions of the nothing of carbon in the hydro-thermal charcoal for preparing determine
Type degree is very high, so, into soil after the agraphitic carbon of high activity in hydro-thermal charcoal can be rapidly converted into soil
Organic matter.
Quick lime is added in hydro-thermal charcoal.Although existing quick lime is as the report of heavy metal soil-repairing agent, its principle
The purpose of reduction metal active is reached by the acidity of quick lime reduction soil.But it is due to that soil has certain buffering
Property, so needing to add substantial amounts of quick lime to reach the purpose of reduction heavy metal activity.Although by adding quick lime reduction
The environmental risk of heavy metal, but a large amount of strong basicity external source quick limes can change soil microbial community and cause soil fertility
Decline.It is environment-friendly and the renovation agent bulk composition that the present invention is used is prepared by renewable, green abandoned biomass.This hair
Bright middle addition quick lime can reach following purpose simultaneously：(1) quick lime appropriate can be reduced by improving the alkalescence of soil
The reactivity of heavy metal in soil, reaches the purpose of soil remediation；(2) quick lime appropriate can promote hydro-thermal charcoal to metal
Passivation.Avtive spot in hydro-thermal carbon surface polar functional group is largely combined with proton, adds hydrogen-oxygen after quick lime
Radical ion can occur to combine and make it that functional group's coordination activity site is exposed with proton, increase it and chelated with heavy metal ion
The ability of coordination.(3) alkalescence of quick limes enables to lactone group of hydro-thermal carbon surface etc. to occur dissociation and increase heavy metal
Coordination activity site, so as to improve heavy metal-passivated ability.The effect of quick lime is as shown in Figure 2.
The mixed proportion of hydro-thermal charcoal and quick lime is 1:1-10:Between 1.Rush of the too low quick lime addition to hydro-thermal charcoal
Enter and act on unobvious, and there is destruction Soil Microorganism group, cause what soil fertility declined in too high quick lime addition
Risk.
Abandoned biomass can be stalk, feces of livestock and poultry, rubbish from cooking etc. in the present invention, and according to this renovation agent counterweight
The repairing effect that the principle of metal passivation can be seen that this renovation agent is not directed to a certain specific heavy metal, i.e., with broad-spectrum high efficacy
The characteristics of.
Present disclosure is expanded on further with reference to Figure of description and embodiment.
Brief description of the drawings
Fig. 1 hydro-thermal process influences schematic diagram with pyrolysis processing on biological surface functional group.
Fig. 2 quick limes are added to improving hydro-thermal charcoal heavy metal passivation effect schematic diagram.
The technological process of production schematic diagram of Fig. 3 hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent.
Embodiment
It is in situ that the present invention prepares hydro-thermal charcoal base heavy-metal contaminated soil using agricultural stalk, feces of livestock and poultry and rubbish from cooking etc.
Renovation agent.Agricultural stalk includes maize straw, straw, Cotton Stalk, straw etc..Feces of livestock and poultry includes pig manure, chicken manure, cow dung etc..
Embodiment 1
1. material prepares
It is standby by pig manure crushed after being dried to 5mm is less than.Pedotheque includes actual contaminated soil and simulating pollution soil
Two kinds, wherein simulating pollution soil prepares (Cd and Pb concentration point by adding target contaminant Cd and Pb into uncontaminated soil
Wei 5mg/kg and 1000mg/kg)；Cd and Pb concentration is respectively 7.2mg/kg and 346mg/kg in actual contaminated soil.
2. the preparation of renovation agent
1) by pig manure (butt) and water with 1：It is put into after 5 ratio mixing in hydrothermal reaction kettle.
2) reactor is heated to 200 DEG C and kept for 60 minutes；Then cooled down by electric fan and inner loop after water cooling
Carry out separation of solid and liquid and obtain hydro-thermal charcoal；
3) hydro-thermal charcoal and quick lime are according to 4:1 ratio mixing, mechanical agitation produces the heavy metal polluted soil after 2 hours
Earth in-situ immobilization agent.
3. passivation of the renovation agent to heavy metal in soil
1) humidity is kept to exist after the renovation agent of addition 5% into 100g simulating pollutions soil and actual contaminated soil respectively
60% carries out biochemical culture 14 days in 25 DEG C.
2) NH of the soil 1mol/l after biochemical culture4NO3Solution carries out 2 hours (soil/solution=2/5) of extraction.
3) centrifuged after extracting, supernatant liquor, which is crossed after film, determines Cd and Pb ion concentrations therein.
4) contaminated soil for being not added with renovation agent is carried out as control experiment.
The deactivation rate of metal is calculated according to below equation
Ir (%)=100-Mr/Mc x100
MIRefer to NH in addition renovation agent and control experiment respectively with Mc4NO3The Cd and Pb of solution extraction quality.
Cd and Pb ion concentrations are determined by ICP-OES in extract, analysis result such as table 1.
4. renovation agent can utilize the influence of heavy metal to plant in soil
1) 600ml plastics are inserted after being sufficiently mixed after the renovation agent (3%) that 3 grams are added in 300 grams of simulating pollution soil
Placed 2 days in basin；
2) it is put into after the eastern juncea seeds (Brassica juncea) of 8 water being uniformly sprinkled into each basin in lighting box in 25
DEG C incubated (illumination in 24 hours, daily quantitative watering).
3) 4 seedling are only retained in (the 6th day) each plastic tub after emerging, remaining seedling removes.
4) plant after harvest is cultivated 5 weeks.
5) root of plant and it will be separately from other sections after plant is thoroughly cleaned with deionized water；Two parts are dry through 105 DEG C
After dry 24 hours, the content of Cd and Pb ions therein is analyzed.
Plant clears up (digestion solution：2ml 65%HNO3+2ml H2O2) after heavy metal therein determined by ICP-OES contained
Amount.Measurement result such as table 2.
Embodiment 2
Except replacing pig manure with maize straw.
In renovation agent preparation process 2) in 220 DEG C of processing 80 minutes it is outer, remaining is same as Example 1.
Renovation agent to plant in soil can using in the influence step of heavy metal except be put into soil in 1) 5% reparation
Outside agent, remaining is same as Example 1.
Analysis result such as Tables 1 and 2.
Embodiment 3
Except replacing pig manure with rubbish from cooking.
In renovation agent preparation process 1) in rubbish from cooking (butt) and water with 1：5 ratio mixing；2) 220 DEG C of processing 60 in
Outside minute, remaining is same as Example 1.
Renovation agent is to adding 7% renovation agent in 1) in the passivation of heavy metal in soil in addition to, remaining and the phase of embodiment 1
Together.
Renovation agent to plant in soil can using in the influence step of heavy metal except be put into 1) soil 15% reparation
Outside agent, remaining is same as Example 1.
Analysis result such as Tables 1 and 2.
Passivation of the renovation agent of table 1 to heavy metal in soil.
The content analysis result of heavy metal in the leaf mustard root of table 2 and cauline leaf.
The renovation agent prepared as can be seen from Table 1 by adding 5% present invention into contaminated soil realizes contaminated soil
In two heavy metal species while efficient passivation.Cd and Pb highest deactivation rate is 94% and 96% respectively.
The renovation agent prepared as can be seen from Table 2 by adding the present invention into heavy-metal contaminated soil can be reduced effectively
Leaf mustard root and the intake of cauline leaf part heavy metal.Add the best results of 15% renovation agent, root Pb and Cd intake
Reduced rate be up to 88% and 84%, and cauline leaf part Pb and the reduced rate of Cd intakes are up to 96% and 86%.
Claims (6)
1. a kind of preparation method of hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent, it is characterised in that：By abandoned biomass
By hydro-thermal charing be converted into hydro-thermal charcoal, then hydro-thermal charcoal is mixed according to a certain percentage with quick lime, prepare described in
Heavy-metal contaminated soil in-situ immobilization agent.
2. the preparation method of hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent according to claim 1, it is characterized in that：
Described hydro-thermal carbonization is that abandoned biomass and water are mixed into the hot charing process of water-filling first, and abandoned biomass is turned
Turn into hydro-thermal charcoal, the weight ratio of abandoned biomass butt weight and water is 1:1-1:10.
3. the preparation method of hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent according to claim 1 or 2, its feature
It is：In described hydro-thermal charing process step, hydrothermal temperature is 180-220 DEG C, and hydrothermal conditions are 40-90min.
4. the preparation side of the hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent according to claim 1-3 any one
Method, it is characterized in that：Hydro-thermal charcoal is with quick lime with 1:1-10:1 is sufficiently mixed.
5. the preparation side of the hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent according to claim 1-4 any one
Method, it is characterized in that：Described abandoned biomass is stalk, feces of livestock and poultry and/or rubbish from cooking etc..
6. the hydro-thermal charcoal base heavy-metal contaminated soil in-situ immobilization agent that claim 1-5 any one preparation methods are prepared.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191572A (en) * | 2018-02-02 | 2018-06-22 | 中国科学院生态环境研究中心 | A kind of method that abandoned biomass prepares charcoal base organic fertilizer |
| CN110434163A (en) * | 2019-06-11 | 2019-11-12 | 上海大学 | The method of the modified hydro-thermal charcoal removal heavy metal-polluted soil of electrochemical in-situ |
| CN110523767A (en) * | 2019-09-05 | 2019-12-03 | 安徽科技学院 | A method of pulp thickening heavy metal-polluted soil is carbonized using feces of livestock and poultry hydro-thermal |
| CN110563486A (en) * | 2019-08-08 | 2019-12-13 | 天津大学 | Phosphorus-rich hydrothermal carbon prepared from water body restoration plants and grass gathering and preparation method |
| CN111154491A (en) * | 2020-01-19 | 2020-05-15 | 南京林业大学 | Preparation and application of heavy metal polluted acid soil remediation-improvement material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921109A (en) * | 2016-06-01 | 2016-09-07 | 湖南农业大学 | Biological carbon prepared from tobacco stems as well as preparation method and application thereof |
| CN106111687A (en) * | 2016-06-17 | 2016-11-16 | 广东省农业科学院农业资源与环境研究所 | The application in heavy-metal contaminated soil is improved of a kind of charcoal based composition and use thereof in packaging |
-
2017
- 2017-03-24 CN CN201710183479.0A patent/CN107011906A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921109A (en) * | 2016-06-01 | 2016-09-07 | 湖南农业大学 | Biological carbon prepared from tobacco stems as well as preparation method and application thereof |
| CN106111687A (en) * | 2016-06-17 | 2016-11-16 | 广东省农业科学院农业资源与环境研究所 | The application in heavy-metal contaminated soil is improved of a kind of charcoal based composition and use thereof in packaging |
Non-Patent Citations (1)
| Title |
|---|
| 乔玉辉等: "《设施农田土壤重金属污染控制原理与技术》", 31 October 2016, 中国农业大学出版社 * |
Cited By (6)
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| CN110434163A (en) * | 2019-06-11 | 2019-11-12 | 上海大学 | The method of the modified hydro-thermal charcoal removal heavy metal-polluted soil of electrochemical in-situ |
| CN110563486A (en) * | 2019-08-08 | 2019-12-13 | 天津大学 | Phosphorus-rich hydrothermal carbon prepared from water body restoration plants and grass gathering and preparation method |
| CN110523767A (en) * | 2019-09-05 | 2019-12-03 | 安徽科技学院 | A method of pulp thickening heavy metal-polluted soil is carbonized using feces of livestock and poultry hydro-thermal |
| CN110523767B (en) * | 2019-09-05 | 2021-09-03 | 安徽科技学院 | Method for extracting soil heavy metals by using livestock and poultry manure hydrothermal carbonization waste liquid |
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