CN105295938B - The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil - Google Patents
The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil Download PDFInfo
- Publication number
- CN105295938B CN105295938B CN201510645721.2A CN201510645721A CN105295938B CN 105295938 B CN105295938 B CN 105295938B CN 201510645721 A CN201510645721 A CN 201510645721A CN 105295938 B CN105295938 B CN 105295938B
- Authority
- CN
- China
- Prior art keywords
- charcoal
- sodium alginate
- soil
- heavy metal
- cadmium
- 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.)
- Active
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of heavy metal deactivators of bioavailability of cadmium in reduction soil, are mixed by the component of following weight percent meter：Charcoal 70-90%, modified sodium alginate 10-30%.The present invention not only has the function of in-situ passivation heavy metal-polluted soil, but also can also improve soil texture, increase soil porosity, greatly improves soil pH value, has both the function of repairing acidified soil.
Description
Technical field
The present invention relates to a kind of heavy metal deactivator, more particularly to a kind of heavy metal reducing bioavailability of cadmium in soil
Passivator.
Background technology
Due to industrializing the accelerated development with urbanization, China part agricultural land soil various degrees cadmium (Cd) pollution
Risk.It is reported that in China's topsoil soils Cd average input rate be annual 0.004mg/kg, be high risk heavy metal element it
One.Harmful heavy metal accumulation to a certain extent, not only results in soil degradation, crop yield and quality decline in soil, and
And directly poisonous plant or human health may be endangered by food chain approach.
Have many reports to the research of heavy metal pollution of soil recovery technique at present, various countries researcher successively explores
Deep ploughing, casting method, heavy metal pollution of soil, thermal desorption method, heat treating process, electrochemical process and chemical flush method, chemical in situ deactivation method etc.
Various physical/chemical restorative procedures.There is certain limitation in view of the above method, ideal reclamation activities could not be become,
It is not widely applied.Such as casting method and heavy metal pollution of soil, because soil is up to 150,000 kg per acre, freight volume is huge, and cost is too
Height, and it is mishandling can cause secondary pollution, consider from economy and method angle, it is impossible to become mainstream recovery technique.It is existing
It is the in-situ passivation method of heavy metal-polluted soil in most common physical/chemical restorative procedure, and has preliminarily formed clay mineral, phosphate fertilizer
The alkalinity such as substance, iron and manganese oxides, silicon element substance, trace-element fertilizer, iron and manganese oxides substance, organic materials and multiple
Close the other soil heavy metal passivants of eight major class such as passivator.This method is that passivator is added in contaminated soil, passes through change
Heavy metal effective concentration in the soil or redox state, to reduce the effective concentration of heavy metal in the soil, drop
The low toxicity to organism.In-situ passivation recovery technique is a kind of controlling area-source pollution technology of economical and efficient, due to operation side
Just quick with effect, so that it is had not replaceable effect in contaminated soil governance process, meets China's sustainable agriculture hair
The needs of exhibition, by the more and more extensive concern of soil, environmentalist.For example, utilizing industrial waste and agriculture waste in recent years
Object (such as red mud, rape stalk, maize straw) reduces the biological effectiveness of Cd in soil, Jin Erfang as in-situ passivation agent
Only its research shifted into food chain has been reported.Its principle is by changing the existence of heavy metal in the soil, making
It is changed into stable state by activated state, to reduce its toxic action.Charcoal be biomass in the case where limiting Oxygen Condition through heat
A kind of highly stable solid matter that solution charing generates.The raw material sources for preparing charcoal are extensive, such as agricultural wastes, bamboo wood
Forest, shell etc..As a kind of novel absorption material, molecule is fine and closely woven porous, and surface area is huge, has superpower adsorption energy
Power is widely used in fields such as environmental protection, soil geology and atmospheric science.It is usually used in purification of water quality, sky in daily life
Gas deodorization, damping be fresh-keeping and room health care etc..
Invention content
The purpose of the present invention is to provide a kind of heavy metal deactivators of bioavailability of cadmium in reduction soil, not only have
The function of in-situ passivation heavy metal-polluted soil, and soil texture can also be improved, increase soil porosity, greatly improve soil
Earth pH value has both the function of repairing acidified soil.
The technical solution adopted by the present invention to solve the technical problems is：
The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil is mixed by the component of following weight percent meter
It is made：Charcoal 70-90%, modified sodium alginate 10-30%.
The present invention gives full play to the good characteristic of charcoal, uses it to prepare heavy metal deactivator, by proper ratio by its
It is applied to soil with the mixing of common chemical nitrogen fertilizer, the effect for inhibiting fertilizer nitrogen volatilization, realizing nitrogen sustained release can be played, to slow
Solving agricultural non-point source pollution has highly important scientific meaning.
The present invention is compounded using charcoal and modified sodium alginate, and charcoal can be passivated absorption heavy metal, modified alginic acid
Sodium more can directly be reacted with heavy metal adsorption, so as to reduce the bio-available Zn concentration of cadmium in soil, to reduce plant to cadmium
Uptake.
Preferably, the charcoal by bamboo charcoal, pecan shell charcoal and peanut shell charcoal according to 3:2:1 weight ratio mixing and
At.
Inventor is combined with particular kind of charcoal by the discovery that studies for a long period of time, especially selects pecan shell
The charcoal of the waste processing of this Hangzhou local characteristic of charcoal, the combination of these three charcoals is comprehensive to work, in the hole of the charcoal of formation
Gap, specific surface area etc. can preferably be passivated, adsorbing heavy metal cadmium.
Preferably, the charcoal uses after dilute alkaline soln is handled.
Preferably, dilute alkaline soln processing is specially：Charcoal is placed in the sodium hydroxide of a concentration of 0.3-0.7mol/L
In solution, it is heated to 30-40 DEG C, heat-insulation soaking 5-8h, clean with distilled water flushing after taking-up, drying.The present invention will be by that will give birth to
Object charcoal passes through specific dilute alkaline soln treatment process, concentration, processing time and the temperature of alkali is controlled, to change the table of charcoal
Face functional group, improve charcoal passivation, adsorbing heavy metal cadmium ability.
Preferably, the preparation method of the bamboo charcoal is：By bamboo in oxygen-free environment, 90- is cracked at 500-700 DEG C
120min and obtain；The preparation method of the pecan shell charcoal is：By pecan shell in oxygen-free environment, cracked at 500-600 DEG C
90-120min and obtain；The preparation method of the peanut shell charcoal is：By peanut shell in oxygen-free environment, cracked at 350-500 DEG C
90-120min and obtain.For the different charcoal of the present invention using different specific temperature cracking production, the charcoal of formation can be more preferable
Ground passivation, adsorbing heavy metal cadmium.
Preferably, steps are as follows for the preparation method of the modified sodium alginate：
(1) by the sodium alginate sodium alginate soln soluble in water that mass concentration 5-10% is made；
(2) hydrogen peroxide is added into sodium alginate soln, is heated to 45-50 DEG C, insulation reaction 3-5h under ultrasound condition；
(3) activated carbon is added into step (2) treated sodium alginate soln, activated carbon dosage is step (2) processing
The 3-5% of sodium alginate soln weight afterwards stirs 1-3h, crosses and filters out activated carbon, and the mass concentration of 6-8 times of volume is added in filtrate
95% ethyl alcohol, alcohol precipitation 8-10h, after suction filtration alcohol hypostasis；Activated carbon processing can remove partial impurities.
(4) alcohol hypostasis is dissolved in water and the alcohol hypostasis solution of mass concentration 10-15% is made, and adjust pH to 6.0-6.5, it will
Alcohol hypostasis solution is uniformly mixed with the liquor zinci chloridi of mass concentration 30-50%, is heated to 55-65 DEG C, is kept the temperature under stirring condition
15-18h, centrifugation are reacted, supernatant obtains modified sodium alginate after being concentrated in vacuo, being freeze-dried.Alcohol hypostasis (oligosaccharides) and metal
Salt (zinc chloride) chelatropic reaction, obtains oligosaccharides-metal complex, that is, modified sodium alginate, and removing heavy metal cadmium effect is good.
The present invention (45-50 DEG C) degradation under hydrogen peroxide, specific temperature by sodium alginate, while being aided with supersound process, have
Helping the fracture degradation of macromolecular sodium alginate, auxiliary sodium alginate is degraded to oligosaccharides, is ready for next step degradation reaction,
The oligosaccharides degree of polymerization prepared is better, and conducive to the oligosaccharides-metal complex prepared below, removing heavy metal cadmium effect is more preferable.
Preferably, dioxygen water consumption is the 8-10% of sodium alginate soln total volume in step (2), dioxygen water quality is dense
Degree is 10-20%.
Preferably, in step (4) alcohol hypostasis solution and liquor zinci chloridi volume ratio=1:0.5-1.
The beneficial effects of the invention are as follows：
1, not only have the function of in-situ passivation heavy metal-polluted soil, but also soil texture can also be improved, increase soil aperture
Degree, greatly improves soil pH value, has both the function of repairing acidified soil, is suitable for the rice of various soil parent materials development
Soil is a kind of multifunctional broad-spectrum type environment-friendly products.
2, raw material sources of the present invention are extensive, and preparation method is simple, easy to spread using convenience, have significant ring
Border benefit and economic benefit.
Specific implementation mode
Below by specific embodiment, technical scheme of the present invention will be further explained in detail.
In the present invention, if not refering in particular to, used raw material and equipment etc. are commercially available or commonly used in the art.
Method in following embodiments is unless otherwise instructed the conventional method of this field.
Embodiment 1：
The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil is mixed by the component of following weight percent meter
It is made：Charcoal 70%, modified sodium alginate 30%.
Charcoal uses after dilute alkaline soln is handled, and dilute alkaline soln processing is specially：Charcoal is placed in a concentration of
In the sodium hydroxide solution of 0.3mol/L, 30 DEG C, heat-insulation soaking 8h are heated to, clean with distilled water flushing after taking-up, drying.
Charcoal is by bamboo charcoal, pecan shell charcoal and peanut shell charcoal according to 3:2:1 weight ratio mixes.The bamboo charcoal
Preparation method is：By bamboo in oxygen-free environment, cracks 120min at 500 DEG C and obtain；The preparation method of the pecan shell charcoal
For：By pecan shell in oxygen-free environment, cracks 120min at 500 DEG C and obtain；The preparation method of the peanut shell charcoal is：It will spend
Raw shell cracks 120min at 350 DEG C and obtains in oxygen-free environment.
Steps are as follows for the preparation method of the modified sodium alginate：
(1) by sodium alginate (commercially available) sodium alginate soln soluble in water that mass concentration 5% is made.
(2) hydrogen peroxide that mass concentration is 10% is added into sodium alginate soln, dioxygen water consumption is that sodium alginate is molten
The 10% of liquid total volume is heated to 45 DEG C, (ultrasonic power 150W) insulation reaction 5h under ultrasound condition.
(3) activated carbon is added into step (2) treated sodium alginate soln, activated carbon dosage is step (2) processing
The 3% of sodium alginate soln weight afterwards stirs 1h, crosses and filters out activated carbon, and 95% second of mass concentration of 6 times of volumes is added in filtrate
Alcohol, alcohol precipitation 8h, after suction filtration alcohol hypostasis.
(4) alcohol hypostasis is dissolved in water and the alcohol hypostasis solution of mass concentration 10% is made, and adjust pH to 6.0, according to volume
Than=1:Alcohol hypostasis solution is uniformly mixed by 1 proportioning with the liquor zinci chloridi of mass concentration 30%, is heated to 55 DEG C, stirring bar
Insulation reaction 18h under part, centrifugation, supernatant obtain modified sodium alginate after being concentrated in vacuo, being freeze-dried.
Embodiment 2：
The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil is mixed by the component of following weight percent meter
It is made：Charcoal 90%, modified sodium alginate 10%.
Charcoal uses after dilute alkaline soln is handled, and dilute alkaline soln processing is specially：Charcoal is placed in a concentration of
In the sodium hydroxide solution of 0.7mol/L, 40 DEG C, heat-insulation soaking 5h are heated to, clean with distilled water flushing after taking-up, drying.
Charcoal is by bamboo charcoal, pecan shell charcoal and peanut shell charcoal according to 3:2:1 weight ratio mixes.The bamboo charcoal
Preparation method is：By bamboo in oxygen-free environment, cracks 90min at 700 DEG C and obtain；The preparation method of the pecan shell charcoal
For：By pecan shell in oxygen-free environment, cracks 90min at 600 DEG C and obtain；The preparation method of the peanut shell charcoal is：It will spend
Raw shell cracks 90min at 500 DEG C and obtains in oxygen-free environment.
Steps are as follows for the preparation method of the modified sodium alginate：
(1) by sodium alginate (commercially available) sodium alginate soln soluble in water that mass concentration 10% is made.
(2) hydrogen peroxide that mass concentration is 20% is added into sodium alginate soln, dioxygen water consumption is that sodium alginate is molten
The 8% of liquid total volume is heated to 50 DEG C, insulation reaction 3h under ultrasound condition.
(3) activated carbon is added into step (2) treated sodium alginate soln, activated carbon dosage is step (2) processing
The 5% of sodium alginate soln weight afterwards stirs 3h, crosses and filters out activated carbon, and 95% second of mass concentration of 8 times of volumes is added in filtrate
Alcohol, alcohol precipitation 10h, after suction filtration alcohol hypostasis.
(4) alcohol hypostasis is dissolved in water and the alcohol hypostasis solution of mass concentration 15% is made, and adjust pH to 6.5, according to volume
Than=1:Alcohol hypostasis solution is uniformly mixed by 0.5 proportioning with the liquor zinci chloridi of mass concentration 50%, is heated to 65 DEG C, stirring
Under the conditions of insulation reaction 15h, centrifugation, supernatant after being concentrated in vacuo, being freeze-dried modified sodium alginate.
Embodiment 3：
The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil is mixed by the component of following weight percent meter
It is made：Charcoal 80%, modified sodium alginate 20%.
Charcoal uses after dilute alkaline soln is handled, and dilute alkaline soln processing is specially：Charcoal is placed in a concentration of
In the sodium hydroxide solution of 0.5mol/L, 35 DEG C, heat-insulation soaking 6h are heated to, clean with distilled water flushing after taking-up, drying.
Charcoal is by bamboo charcoal, pecan shell charcoal and peanut shell charcoal according to 3:2:1 weight ratio mixes.The bamboo charcoal
Preparation method is：By bamboo in oxygen-free environment, cracks 100min at 600 DEG C and obtain；The preparation method of the pecan shell charcoal
For：By pecan shell in oxygen-free environment, cracks 100min at 550 DEG C and obtain；The preparation method of the peanut shell charcoal is：It will spend
Raw shell cracks 100min at 400 DEG C and obtains in oxygen-free environment.
Steps are as follows for the preparation method of the modified sodium alginate：
(1) by sodium alginate (commercially available) the sodium alginate soln soluble in water that mass concentration 8% is made
(2) hydrogen peroxide that mass concentration is 15% is added into sodium alginate soln, dioxygen water consumption is that sodium alginate is molten
The 9% of liquid total volume is heated to 50 DEG C, insulation reaction 4h under ultrasound condition.
(3) activated carbon is added into step (2) treated sodium alginate soln, activated carbon dosage is step (2) processing
The 4% of sodium alginate soln weight afterwards stirs 2h, crosses and filters out activated carbon, and 95% second of mass concentration of 7 times of volumes is added in filtrate
Alcohol, alcohol precipitation 9h, after suction filtration alcohol hypostasis.
(4) alcohol hypostasis is dissolved in water and the alcohol hypostasis solution of mass concentration 12% is made, and adjust pH to 6.0, according to volume
Than=1:Alcohol hypostasis solution is uniformly mixed by 0.8 proportioning with the liquor zinci chloridi of mass concentration 40%, is heated to 60 DEG C, stirring
Under the conditions of insulation reaction 16h, centrifugation, supernatant after being concentrated in vacuo, being freeze-dried modified sodium alginate.
Pot experiment is carried out using the heavy metal deactivator of the present invention
Experiment sets 5 processing.Take the present invention heavy metal deactivator, be respectively set 0.5% (T1), 1.0% (T2),
2.5% (T3), 5.0% (T4) four pitch-based spheres are uniformly mixed with the advance topsoil for acquiring and crossing 2mm sieves, are loaded
Enter basin.2.0kg is loaded per basin.It is Xiaoqinling Nature Reserve for studying object.The identical Xiaoqinling Nature Reserve of growing way will have been planted in advance to be transplanted respectively to reality
It tests in basin, starts to test.Wherein Cd concentration uses CdCl2Solution external source is allocated, unified allocation of resources to the initial cadmium concentration 50mg/ of soil
kg.Conventional fertilizer application is according to N:P2O5:K2O=2:1:1.2 implement, and the sowing amount of N presses 180kg/hm2, wherein nitrogen, phosphorus and potassium fertilizer respectively by
Urea, normal superphosphate and potassium chloride provide.The pure soil control (being indicated with CK) for not adding heavy metal deactivator is set simultaneously.Often
A processing is repeated 4 times.It is poured with deionized water, pedotheque, harvest Xiaoqinling Nature Reserve are dried in acquisition experiment basin after 3 months
Sample cadmium concentration is analyzed in dry-cure.1 is the results are shown in Table, as shown in Table 1, soil is effective after adding the heavy metal deactivator of the present invention
State Cd concentration is substantially reduced relative to control group, and the total Cd concentration of Xiaoqinling Nature Reserve is significantly reduced relative to control group.
1 different disposal soil available cadmium concentration of table and the total cadmium concentration of Xiaoqinling Nature Reserve
| Processing | Soil available cadmium concentration (mg/kg) | The total Cd concentration (mg/kg) of Xiaoqinling Nature Reserve |
| CK | 20.5±0.99 | 47.8±3.22 |
| T1 | 18.7±1.16 | 32.1±1.54 |
| T 2 | 17.5±0.81 | 29.4±3.76 |
| T 3 | 16.2±1.23 | 25.9±2.23 |
| T 4 | 15.6±1.60 | 21.7±4.17 |
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, on the premise of not exceeding the technical scheme recorded in the claims also other variations and modifications.
Claims (4)
1. a kind of heavy metal deactivator reducing bioavailability of cadmium in soil, which is characterized in that by following weight percent meter
Component be mixed：Charcoal 70-90%, modified sodium alginate 10-30%；
The charcoal is mixed by bamboo charcoal, pecan shell charcoal and peanut shell charcoal according to 3: 2: 1 weight ratio；Charcoal is through dilute
It is used after alkaline solution treatment：Charcoal is placed in the sodium hydroxide solution of a concentration of 0.3-0.7mol/L, is heated to 30-40
DEG C, heat-insulation soaking 5-8h, clean with distilled water flushing after taking-up, drying；
Steps are as follows for the preparation method of the modified sodium alginate：
(1) by the sodium alginate sodium alginate soln soluble in water that mass concentration 5-10% is made；
(2) hydrogen peroxide is added into sodium alginate soln, is heated to 45-50 DEG C, insulation reaction 3-5h under ultrasound condition；
(3) activated carbon is added into step (2) treated sodium alginate soln, activated carbon dosage is that treated for step (2)
The 3-5% of sodium alginate soln weight stirs 1-3h, crosses and filters out activated carbon, and the mass concentration 95% of 6-8 times of volume is added in filtrate
Ethyl alcohol, alcohol precipitation 8-10h, after suction filtration alcohol hypostasis；
(4) alcohol hypostasis is dissolved in water and the alcohol hypostasis solution of mass concentration 10-15% is made, and adjust pH to 6.0-6.5, by alcohol precipitation
Object solution is uniformly mixed with the liquor zinci chloridi of mass concentration 30-50%, is heated to 55-65 DEG C, insulation reaction under stirring condition
15-18h, centrifugation, supernatant obtain modified sodium alginate after being concentrated in vacuo, being freeze-dried.
2. a kind of heavy metal deactivator reducing bioavailability of cadmium in soil according to claim 1, which is characterized in that
The preparation method of the bamboo charcoal is：By bamboo in oxygen-free environment, cracks 90-120min at 500-700 DEG C and obtain；The mountain core
The preparation method of peach shell charcoal is：By pecan shell in oxygen-free environment, cracks 90-120min at 500-600 DEG C and obtain；The flower
The preparation method of raw shell charcoal is：By peanut shell in oxygen-free environment, cracks 90-120min at 350-500 DEG C and obtain.
3. a kind of heavy metal deactivator reducing bioavailability of cadmium in soil according to claim 1, it is characterised in that：
Dioxygen water consumption is the 8-10% of sodium alginate soln total volume in step (2), and hydrogen peroxide mass concentration is 10-20%.
4. a kind of heavy metal deactivator reducing bioavailability of cadmium in soil according to claim 3, it is characterised in that：
Volume ratio=1 of alcohol hypostasis solution and liquor zinci chloridi in step (4): 0.5-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510645721.2A CN105295938B (en) | 2015-10-08 | 2015-10-08 | The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510645721.2A CN105295938B (en) | 2015-10-08 | 2015-10-08 | The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105295938A CN105295938A (en) | 2016-02-03 |
| CN105295938B true CN105295938B (en) | 2018-11-06 |
Family
ID=55193787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510645721.2A Active CN105295938B (en) | 2015-10-08 | 2015-10-08 | The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105295938B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694904B (en) * | 2016-03-02 | 2019-04-09 | 潍坊奥丰作物病害防治有限公司 | A kind of biological agent adjusting rehabilitating soil curing heavy metal |
| CN105838380A (en) * | 2016-04-22 | 2016-08-10 | 广西喷施宝股份有限公司 | Soil restoration conditioner for treating cadmium pollution |
| CN106190141A (en) * | 2016-07-04 | 2016-12-07 | 时科生物科技（上海）有限公司 | A kind of bamboo charcoal soil conditioner and preparation method thereof |
| CN106381150A (en) * | 2016-08-16 | 2017-02-08 | 中国海洋大学 | An acidic charcoal modifier for modifying saline-alkali soil and a preparing method thereof |
| CN106967442B (en) * | 2017-05-15 | 2020-05-01 | 江西省农业科学院土壤肥料与资源环境研究所 | Soil cadmium passivator and preparation method and application thereof |
| CN109401755A (en) * | 2017-08-18 | 2019-03-01 | 中国科学院沈阳应用生态研究所 | A kind of straw biological charcoal method of modifying for heavy-metal contaminated soil reparation |
| CN107824612B (en) * | 2017-11-04 | 2018-09-28 | 江西夏氏春秋环境股份有限公司 | A kind of Fe3O4The preparation method of base charcoal soil passivator |
| CN107955615A (en) * | 2017-11-20 | 2018-04-24 | 湖南农业大学 | A kind of biology drop cadmium agent |
| MY190046A (en) | 2019-07-04 | 2022-03-23 | Incitec Fertilizers Pty Ltd | Improved fertiliser |
| CN113773849A (en) * | 2021-09-23 | 2021-12-10 | 湖南国重环境科技有限责任公司 | Slow-release heavy metal fixing agent, preparation method thereof and application thereof in remediation of heavy metal contaminated farmland soil |
| CN114181323B (en) * | 2021-12-14 | 2022-07-26 | 舟山市食品药品检验检测研究院 | Method for enriching and purifying heavy metals in seawater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359816A (en) * | 2012-03-29 | 2013-10-23 | 江南大学 | Method for synthesizing modified sodium alginate flocculating agent and application of flocculating agent |
| CN104043403A (en) * | 2014-05-07 | 2014-09-17 | 杭州师范大学 | Adsorption plate used for soil heavy metal cadmium adsorption and preparation method and application thereof |
| CN104946620A (en) * | 2015-04-24 | 2015-09-30 | 南开大学 | Immobilized microbial inoculant for restoring petroleum-hydrocarbon-polluted alkaline-saline soil and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000308878A (en) * | 1999-04-27 | 2000-11-07 | Yuushin Kk | Device and method for improving polluted soil |
| JP5837734B2 (en) * | 2009-08-06 | 2015-12-24 | 公立大学法人秋田県立大学 | Heavy metal absorption promoter for plant and soil purification method |
-
2015
- 2015-10-08 CN CN201510645721.2A patent/CN105295938B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359816A (en) * | 2012-03-29 | 2013-10-23 | 江南大学 | Method for synthesizing modified sodium alginate flocculating agent and application of flocculating agent |
| CN104043403A (en) * | 2014-05-07 | 2014-09-17 | 杭州师范大学 | Adsorption plate used for soil heavy metal cadmium adsorption and preparation method and application thereof |
| CN104946620A (en) * | 2015-04-24 | 2015-09-30 | 南开大学 | Immobilized microbial inoculant for restoring petroleum-hydrocarbon-polluted alkaline-saline soil and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| Assessment of the ecological security of immobilized enzyme remediation process with biological indicators of soil health;Ying Zhang等;《Environ Sci Pollut Res》;20130307;第20卷(第8期);5773–5780 * |
| 不同稻秆炭和竹炭施用水平对小青菜产量、品质以及土壤理化性质的影响;刘玉学等;《植物营养与肥料学报》;20131125;第19卷(第6期);1438 － 1444 * |
| 生物炭对土壤外源镉形态及花生籽粒富集镉的影响;曹莹等;《生态环境学报》;20150418;第24卷(第4期);摘要 * |
| 生物炭对废水中重金属吸附研究进展;蒋艳艳等;《湖北农业科学》;20130705;第52卷(第13期);2984-2988 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105295938A (en) | 2016-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105295938B (en) | The heavy metal deactivator of bioavailability of cadmium in a kind of reduction soil | |
| CN108251118A (en) | Charcoal, heavy metal-polluted soil stabilization agent and preparation method thereof | |
| CN105524623B (en) | Preparation and use methods of slow-release type iron-based biochar soil heavy metal passivator | |
| CN105713619B (en) | Method for preparing iron silicon sulfur multi-element composite biochar soil heavy metal conditioner | |
| CN104663065A (en) | Method for improving saline alkali soil in use of biomass charcoal | |
| CN108262022B (en) | A kind of modification biological charcoal and preparation method thereof | |
| CN109678626B (en) | Soil conditioner for mercury-polluted farmland remediation and preparation method and application thereof | |
| CN111100645A (en) | Biochar-based composition and preparation method and application thereof | |
| CN113527000A (en) | Compound agent for passivation remediation of heavy metal contaminated farmland soil and application thereof | |
| CN104817378A (en) | Bamboo biomass charcoal based urea and preparation method thereof | |
| CN108117168A (en) | The purposes of water quality cleansing agent containing biological enzyme | |
| CN104829326A (en) | Chinese medicine residue biomass charcoal-based urea, and preparation method thereof | |
| CN104904574A (en) | Method for controlling accumulation of heavy metal in turfgrass by means of siduron and carbon nano tube interlayer | |
| CN110125161A (en) | A kind of heavy metal soil-repairing agent and method cooperateing with compost based on magnesia-montmorillonite composite material | |
| CN108689776A (en) | The method of charcoal base manure, preparation method and rehabilitating soil | |
| CN109796005A (en) | Application of the cyclodextrin metal organic frame carbon material in water process and fertilizer slow release | |
| CN110982536A (en) | Heavy metal polluted farmland soil remediation agent, preparation method and remediation method thereof | |
| CN103011973A (en) | Manufacture method of synergic type nitrogen-phosphorus-potassium mixed fertilizer with slow release and loss control effect | |
| CN1765851A (en) | Salt-resistant multielement drip irrigation fertilizer and preparation method thereof | |
| CN107325820B (en) | Soil remediation agent suitable for landscape ecosystem | |
| CN104119194B (en) | The production method of calcium carbonate slag compression Nutrition Soil | |
| CN105925270B (en) | It is a kind of improve salt-soda soil fertility soil conditioner and its application | |
| CN110373199A (en) | A kind of composite soil renovation agent and preparation method thereof and restorative procedure | |
| CN109971488B (en) | Paddy field soil cadmium pollution passivator and preparation method and application thereof | |
| CN104789227A (en) | Soil heavy metal passivation agent applicable to water-flooding environment and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |