CN102441562A - Method for promoting broad bean in restoring and treating cadmium-polluted soil by using citric acid - Google Patents
Method for promoting broad bean in restoring and treating cadmium-polluted soil by using citric acid Download PDFInfo
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Abstract
The invention discloses a method for promoting broad bean in restoring and treating cadmium-polluted soil by using citric acid. The method is characterized in that: the method comprises steps that: broad bean is planted in soil containing cadmium pollutants, and a citric acid aqueous solution is applied to the soil; when the broad bean plants pod or are mature, the broad bean plants are harvested or integrally removed from the polluted soil; a next batch of broad bean can be planted on the soil; a citric acid aqueous solution is applied to the soil; when the broad bean plants pod or are mature, the broad bean plants are harvested or integrally removed from the polluted soil; the process is repeated until the cadmium content in the soil reaches an environment safety standard. With the method provided by the invention, the cadmium absorbing and enriching capacities of broad bean can be developed. The cadmium-polluted soil restoring method is characterized by low investment, low maintenance cost, low project quantity, and low requirement on management technology. When the cadmium-polluted soil is restored by using broad bean, the fertility of the soil can be improved with the nitrogen fixation effect of broad bean. Therefore, good environment benefit, social benefit and economic benefit are brought in.
Description
Technical field
The invention belongs to the regeneration of contaminated soil, relate to a kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair.Be specially adapted to the repairing and treating of cadmium (Cd) contaminated soil.
Background technology
Current, China's regional agriculture ecological deterioration phenomenon increases the weight of gradually, and the whole nation suffers the cultivated area of heavy metal pollution in various degree near 2,000 ten thousand hm
2, account for 1/5 of cultivated area, wherein more general with cadmium (Cd) pollution, nearly 1,000 ten thousand hm of contaminated area
2, secondly be Pb, Zn, Cu, Hg etc.; And there is in the food such as grain, vegetables, fruit in many places content of beary metal such as Cd, Cr, As, Pb exceed standard and near critical value.Wherein great majority are all owing to the trade effluent irrigation causes.Like old dirty irrigated area, suburb, Guangzhou, the content of Cd is up to 228mg/kg in the soil, and average content is 6.68mg/kg; The scholar irrigated area is opened in Shenyang has 2533hm
2The soil suffers the pollution of Cd, and wherein severe contamination accounts for 13%.
In contaminated by heavy metals soil environment; Generally, heavy metal at first can jeopardize edaphon, coercing of heavy metal; The micro organism quantity of incompatibility heavy metal environment can violently reduce; Even extinction, the microorganism that adapts to the heavy metal environment then can survive, and becomes the soil dominant bacteria gradually.Secondly be exactly toxic action to crops; Its influence is: be exactly some tissues and the function of destroying plant on the one hand; Thereby reduce the yield and quality of plant, for example cadmium content exceeds standard and can destroy the chlorophyll structure of plant leaf blade and finally cause the plant decline in the soil;
Big, the difficult degradation of heavy metal element toxicity can directly act on human body through drinking water or domestic water after getting into water body environment, also can be absorbed by the aquatic animals and plants enrichment, gets into food chain and endangers the person poultry safety.Cadmium mainly is accumulated in liver, kidney, pancreas, thyroid gland and the bone after food chain gets into human body, can cause Itai-itai diseases in addition, and cadmium also can cause illnesss such as anaemia, hypertension, ephritis and endocrinopathy.It is impaired that the acute poisoning of cadmium mainly shows as respiratory system, and the slow poisoning of cadmium mainly is to cause the renal tubule pathology.
Characteristics to conventional process heavy metal and nucleic pollution method; After the eighties in 20th century; Phytoremediation technology becomes the focus of scientist research, compares with traditional processing method, has small investment, easy to operate, the characteristics that do not cause secondary pollution, safety.Extraordinary plant is screened and cultivated to phytoremediation exactly; Particularly target contaminant is had the plant of extraordinary absorption and accumulation ability, be planted on the contaminated soil, utilize root system of plant to absorb the pollutant in the soil; The results plant is removed the purpose of polluting to reach.The heavy metal pollution phytoremediation technology can be divided into plant extract, plant stability, rhizosphere filtration and phytovolatilization four parts by the mechanism and the process of its reparation.
In the prior art, in the radioactive pollution phytoremediation technology research of plant extract more relatively, the test of engineering is also carried out.Plant extract is meant that the hyperaccumulative plant that utilizes certain radionuclide transports out with the nucleic in the soil; But enrichment also is transported to root system of plant absorption site and position, ground; Treat to handle again after the plant results; Continuous this kind of plant of plantation can make that the content of radionuclide is reduced to acceptable level in the soil.But the employing plant extract because plant growth rate is slow, causes the efficient of plant extract very low.
Summary of the invention
The object of the invention is intended to overcome deficiency of the prior art, through planting enriching plant and using citric acid, a kind of method of utilizing citric acid promotion broad bean cadmium pollution soil repair that speed is fast, cost is low, effective of administering is provided.
Content of the present invention is: a kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair; It is characterized in that comprising: in containing the soil of cadmium contaminants, plant broad bean; And in soil, apply aqueous citric acid solution; When the plant broad bean grows into the fruit the or during maturity period of bearing pods, plant broad bean harvesting or whole is removed from contaminated soil.
In the content of the present invention: said plant broad bean integral body is removed from contaminated soil after; Plant the next group broad bean again, and in soil, apply aqueous citric acid solution, when the plant broad bean grows into the fruit the or during maturity period of bearing pods; Plant broad bean integral body is removed from contaminated soil; Repeat said process, the cadmium content in soil reaches environmental safety standard, thereby thoroughly removes the cadmium that exceeds standard in the soil.
In the content of the present invention: the amount of application of said aqueous citric acid solution can be per 666.7 square metres of soil application concentration aqueous citric acid solution 350L that is 2.5～20mmol/L.
The aqueous citric acid solution of said 180L can be divided into and being manured into soil for 1～2 time, and be 0～5 day the blanking time of adjacent administered twice; Be disposable applying, or used once in per 1～5 day, in 2 times, used.The time that applies for the first time aqueous citric acid solution can be plant broad bean after planting one month, is applied to plant broad bean rhizosphere scope.
The concentration of said pollutant in soil cadmium can be for containing cadmium (compound of cadmium contaminants is with the cadmium metering) 10～15 milligrams (mean value) in every kilogram of soil.That is: when cadmium content in the soil during in this scope, the said aqueous citric acid solution that applies has the effect of best promotion broad bean cadmium pollution soil repair.
In the content of the present invention: will gather in or the whole broad bean of from contaminated soil, removing can adopt the method for burning to carry out harmless treatment (burning the residual solids that contains cadmium in back can further adopt prior art modes such as reclaiming metal, landfill to handle).
In the content of the present invention: the application rate and the type of seeding of said plant broad bean are equal to prior art.
Said broad bean (the Latin formal name used at school: Vicia faba Linn), another name: lima bean, Buddhist beans, lima bean, river beans, Japan's beans, broad bean; For annual or year this plant of sward more, belong to legume, stem is square, and the center is empty, and floral white has purple plague purpura, the fruit of bearing pods; Seed is edible; China's broad bean cultivated area is extensive, is many with Sichuan, Yunnan, Jiangsu, Hubei and other places.
Compared with prior art, the present invention has following characteristics and beneficial effect:
(1) the present invention is inventor's process long term studies, creatively filters out, and under the processing of citric acid, can obviously improve the ability of broad bean Absorbed Cadmium; Broad bean is planted in the soil of cadmium pollution, uses the chelating agent citric acid, can promote broad bean to absorb the cadmium in the soil, permanently solve the Cadmium Pollution in Soils problem;
(2) the present invention is through planting broad bean in the soil of cadmium pollution; After using citric acid, absorb the cadmium in the contaminated soil in a large number by the broad bean root system, and cadmium is transported to stem, leaf, the pod of broad bean; When broad bean grows into pod phase or maturity period; Whole strain of broad bean or aerial part are gathered in the crops from contaminated soil, thereby the purpose of cadmium pollution thing in the contaminated soil is removed in realization, the nitrogen fixation through broad bean in cadmium pollution soil repair is increase soil fertility;
(3) adopt the present invention; Can make broad bean bring into play absorption, accumulation ability better to cadmium; Cadmium pollution soil repair has small investment and maintenance cost is low, quantities is little; That administrative skill requires is low, improvement method cost, workable, do not destroy the ambient soil structure, do not cause secondary pollution; Soil remediation is effective, and characteristics practical, that in cadmium pollution soil repair, increase soil fertility through the nitrogen fixation of broad bean have good benefits in environment, social benefit and economic benefit.
Description of drawings
Fig. 1 is broad bean individual plant cadmium content and a comparison diagram in the control soil under the citric acid treatment;
Fig. 2 is broad bean cadmium content and a comparison diagram in the slight pollution soil under the citric acid treatment;
Fig. 3 is broad bean cadmium content and a comparison diagram in the serious pollution soil under the citric acid treatment.
The specific embodiment
Embodiment given below intends so that the present invention is described further; But can not be interpreted as it is restriction to protection domain of the present invention; The technical staff in this field to some nonessential improvement and adjustment that the present invention makes, still belongs to protection scope of the present invention according to the content of the invention described above.
Embodiment 1: the characteristic of broad bean Absorbed Cadmium in control soil
This test is carried out in Xinan Science and Technology Univ.'s life science and engineering college's east six laboratory buildings; The broad bean seed of participating in the experiment is purchased the Yun Chuan seeds company in Mianyang, and control soil is a yellow soil, soil is put in lucifuge ventilation natural air drying after; Impurities removing, smash to pieces and sieve the back subsequent use.Artificially do not add cadmium.Broad bean time started of growing seedlings is on September 28th, 2010; When treating that seedling grows to 1 month; Be colonizated in the plastic tub (diameter 33cm, high 26cm) that 8.5kg soil (physicochemical property of soil is seen table 1) is housed, evenly be sprayed in the basin with the form of the aqueous solution after 1 day variable concentrations citric acid (concrete concentration see table 2); Regularly water according to growth needs, grow and carry out sample analysis after 140 days.
Table 1 soil physical chemistry character
Table 2 citric acid treatment concentration
Result of the test shows: can find out that from Figure of description 1 in not adding the control soil of cadmium, broad bean is used citric acid can both significantly improve its cadmium than the contrast of not using citric acid uptake.When using the citric acid of 5mmol/L; Broad bean individual plant cadmium content reaches maximum 216 μ g/ strains, and (this processing broad bean total dry weight is 105.57mg; I.e. conversion is 2046.04mg/kg for the cadmium content of per dry wt); Calculate according to 1 basin, 3 strain broad bean seedlings, 1 season will be extracted the cadmium of 648 μ g, than 10.62 times of the uptakes of its cadmium of contrast raising of not using citric acid.
Embodiment 2: the characteristic of broad bean Absorbed Cadmium in slight pollution soil
This test is carried out in Xinan Science and Technology Univ.'s life science and engineering college's east six laboratory buildings, and the broad bean seed of participating in the experiment is purchased the Yun Chuan seeds company in Mianyang, and the slight pollution concentration of soil is that (cadmium is with Cd (NO for 10 mg/kg cadmiums
3)
24H
2O is the cadmium source); Broad bean time started of growing seedlings is on September 28th, 2010, when treating that seedling grows to 1 month, is colonizated in plastic tub (the diameter 33cm that 8.5kg cadmium pollution soil (physicochemical property of soil is seen table 1) is housed; High 26cm) in; Evenly be sprayed on the form of variable concentrations citric acid (concrete concentration is seen table 2) in the basin after 1 day, regularly water, grow and carry out sample analysis after 140 days according to growth needs with the aqueous solution.
Result of the test shows: can find out from Figure of description 2; In slight pollution soil; Broad bean is used citric acid can significantly improve the uptake of its cadmium than the contrast of not using citric acid, and testing in the set concentration range each concentration, to handle differences not remarkable, but broad bean is when using the citric acid of 5mmol/L; The broad bean cadmium content reaches maximum 3959.33 μ g/ strains, and (this processing broad bean total dry weight is 93.16mg; I.e. conversion for the cadmium content of per dry wt up to 42496.78mg/kg), calculate according to 1 basin, 3 strain broad bean seedlings, will extract the cadmium of 11.878mg 1 season; Account for 13.97% of cadmium content in the soil, improve 11.27 times of the uptakes of its cadmium than the contrast of not using citric acid.Though the broad bean cadmium content did not reach maximum but not remarkable with the citric acid treatment difference of 5mmol/L when broad bean was used the citric acid of 2.5mmol/L, from the citric acid treatment of cost consideration 2.5mmol/L for promoting the suitable treatment of broad bean Absorbed Cadmium.
Embodiment 3: the characteristic of broad bean Absorbed Cadmium in serious pollution soil
This test is carried out in Xinan Science and Technology Univ.'s life science and engineering college's east six laboratory buildings, and the broad bean seed of participating in the experiment is purchased the Yun Chuan seeds company in Mianyang, and soil serious pollution concentration is that (cadmium is with Cd (NO for 15 mg/kg cadmiums
3)
24H
2O is the cadmium source); Broad bean time started of growing seedlings is on September 28th, 2010, when treating that seedling grows to 1 month, is colonizated in plastic tub (the diameter 33cm that 8.5kg cadmium pollution soil (physicochemical property of soil is seen table 1) is housed; High 26cm) in; Evenly be sprayed on the form of variety classes variable concentrations citric acid (concrete concentration is seen table 2) in the basin after 1 day, regularly water, grow and carry out sample analysis after 140 days according to growth needs with the aqueous solution.
Result of the test shows: can find out from Figure of description 3; In serious pollution soil; Broad bean is used citric acid can both significantly improve the uptake of its cadmium than the contrast of not using citric acid, and it is not remarkable to test interior each concentration processing differences of set concentration range, when broad bean is used the citric acid of 5mmol/L; Broad bean cadmium content and all reach maximum 4969.51 μ g/ strains (this processing broad bean total dry weight is 96.21mg; I.e. conversion for the cadmium content of per dry wt up to 51652.74mg/kg), calculate according to 1 basin, 3 strain broad bean seedlings, will extract the cadmium of 14.909mg 1 season; Account for 17.54% of cadmium in the soil, improve 12.24 times of the uptakes of its cadmium than the contrast of not using citric acid.Though the broad bean cadmium content did not reach maximum but not remarkable with the citric acid treatment difference of 5mmol/L when broad bean was used the citric acid of 2.5mmol/L, from the citric acid treatment of cost consideration 2.5mmol/L for promoting the suitable treatment of broad bean Absorbed Cadmium.
Embodiment 4: broad bean Cd transhipment coefficient and concentration coefficient under the citric acid treatment
This test is carried out in Xinan Science and Technology Univ.'s life science and engineering college's east six laboratory buildings; The broad bean seed of participating in the experiment is purchased the Yun Chuan seeds company in Mianyang; Soil contrast concentration, slight pollution concentration and serious pollution concentration are respectively: contrast (natural soil; Artificially do not add cadmium), (cadmium is with Cd (NO for 10mg/kg cadmium and 15mg/kg cadmium
3)
24H
2O is the cadmium source); Broad bean time started of growing seedlings is on September 28th, 2010, when treating that seedling grows to 1 month, is colonizated in plastic tub (the diameter 33cm that 8.5kg cadmium pollution soil (physicochemical property of soil is seen table 1) is housed; High 26cm) in; Evenly be sprayed on the form of variety classes variable concentrations chelating agent (concrete concentration is seen table 2) in the basin after 1 day, regularly water, grow and after 140 days plant root division, stem, leaf and four parts of fruit are carried out sampling analysis according to growth needs with the aqueous solution.The calculating of transporting coefficient and concentration coefficient according to the Cd content of Different Organs at last.
The transhipment coefficient is the overground part constituent content and the ratio of underground part constituent content, be used for estimating plant with certain element from transportation and the accumulation ability of underground part to overground part.The plant that the transhipment coefficient is big is big to the uptake of overground part organ metastasis from root system.The transhipment coefficient of general super enriching plant requires more than 1.Its computing formula is:
Content of beary metal/plant root content of beary metal in transhipment coefficient=plant shoot organ.
The ratio of respective element content in the constituent content that concentration coefficient is meant a certain position of plant and the soil, it is reflecting soil to a certain extent--the complexity of migration of element in the botanical system, it reflected plant with element absorption, transfer to the ability in the body.Concentration coefficient shows that more greatly the ability of plants enriched element is strong more.The concentration coefficient of general super enriching plant is more than 1.Its computing formula is:
Content of beary metal in concentration coefficient=plant shoot organ/heavy metal in soil content.
Broad bean Cd transhipment coefficient under table 3 citric acid treatment
Can know from table 3: under citric acid treatment; Broad bean Cd transhipment coefficient is no matter in slight pollution soil still is serious pollution soil; Along with the increase of soil pollution degree, the transhipment coefficient of broad bean all increases thereupon, and the transhipment coefficient of in this test citric acid concentration scope, using citric acid is all greater than 1; Under citric acid treatment, along with the increase of citric acid concentration, broad bean Cd content demonstrates increases earlier the trend that afterwards reduces.When citric acid concentration is 5mmol/L, slight pollution soil still in serious pollution soil broad bean Cd transhipment coefficient all reach maximum.Particularly Cd transports coefficient up to 6.895 in serious pollution soil.
Broad bean Cd concentration coefficient under table 4 citric acid treatment
Can know from table 4: under citric acid treatment, no matter in slight pollution soil still was serious pollution soil, along with the increase of soil pollution degree, the concentration coefficient of broad bean all increased broad bean Cd concentration coefficient thereupon; Under citric acid treatment, along with the increase of citric acid concentration, broad bean Cd concentration coefficient demonstrates increases earlier the trend that afterwards reduces.When citric acid concentration is 5mmol/L, slight pollution soil still in serious pollution soil broad bean Cd concentration coefficient all reach maximum.Particularly in serious pollution soil the Cd concentration coefficient up to 4.35.
Can find out that from top result citric acid has very strong facilitation for the cadmium that improves in the broad bean extraction soil.Therefore, citric acid can promote the absorption of broad bean to cadmium, thereby shortens the repair time of cadmium pollution soil, is significant for the phytoremediation of cadmium pollution soil.
Embodiment 5:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair; Comprise: in containing the soil of cadmium contaminants, plant broad bean; And in soil, apply aqueous citric acid solution; When the plant broad bean grows into the fruit the or during maturity period of bearing pods, plant broad bean harvesting or whole is removed from contaminated soil.
Embodiment 6:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair; Comprise: in containing the soil of cadmium contaminants, plant broad bean; And in soil, apply aqueous citric acid solution; When the plant broad bean grows into the fruit the or during maturity period of bearing pods, plant broad bean harvesting or whole is removed from contaminated soil; Plant the next group broad bean again, and in soil, apply aqueous citric acid solution, when the plant broad bean grows into the fruit the or during maturity period of bearing pods, plant broad bean integral body is removed from contaminated soil, repeat said process, the cadmium content in soil reaches environmental safety standard.
Embodiment 7:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair, the amount of application of aqueous citric acid solution is the aqueous citric acid solution 350L that per 666.7 square metres of soil application concentration are 2.5mmol/L; Other omits with embodiment 5 or embodiment 6.
Embodiment 8:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair, the amount of application of aqueous citric acid solution is the aqueous citric acid solution 350L that per 666.7 square metres of soil application concentration are 20mmol/L; Other omits with embodiment 5 or embodiment 6.
Embodiment 9:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair, the amount of application of aqueous citric acid solution is the aqueous citric acid solution 350L that per 666.7 square metres of soil application concentration are 10mmol/L; Other omits with embodiment 5 or embodiment 6.
Embodiment 10:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair, the amount of application of aqueous citric acid solution is the aqueous citric acid solution 350L that per 666.7 square metres of soil application concentration are 5mmol/L; Other omits with embodiment 5 or embodiment 6.
Embodiment 11:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair, the amount of application of aqueous citric acid solution is the aqueous citric acid solution 350L that per 666.7 square metres of soil application concentration are 15mmol/L.
Embodiment 12:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair, the amount of application of aqueous citric acid solution is the aqueous citric acid solution 350L that per 666.7 square metres of soil application concentration are 6mmol/L.
Embodiment 13:
A kind of method of utilizing citric acid to promote the broad bean cadmium pollution soil repair, the amount of application of aqueous citric acid solution is the aqueous citric acid solution 350L that per 666.7 square metres of soil application concentration are arbitrary concentration among 2.5～20mmol/L.
In the foregoing description: the aqueous citric acid solution of said 180L is divided into and is manured into soil for 1～2 time, and be 0～5 day the blanking time of adjacent administered twice; Promptly can disposablely apply, used once, and in 2 times, used in perhaps per 1～5 day; The time that applies for the first time aqueous citric acid solution can be plant broad bean after planting one month, is applied to plant broad bean rhizosphere scope.
The concentration that the foregoing description is specially adapted to said pollutant in soil cadmium is to contain 10～15 milligrams of cadmiums (compound of cadmium contaminants is with the cadmium metering) in every kilogram of soil.That is: when cadmium content in the soil during in this scope, the aqueous citric acid solution that applies has the effect of best promotion broad bean cadmium pollution soil repair.
In the foregoing description: will gather in or the whole broad bean of from contaminated soil, removing adopts the method for burning to carry out harmless treatment (burning the residual solids that contains cadmium in back can further adopt prior art modes such as reclaiming metal, landfill to handle).
In the foregoing description: the application rate and the type of seeding of said plant broad bean are equal to prior art.
In the foregoing description: each raw material that is adopted is the commercially available prod.
In the foregoing description: the technological parameter in each step and each amounts of components numerical value etc. are scope, and any point is all applicable.
The not concrete same prior art of narrating of technology contents in content of the present invention and the foregoing description.
The invention is not restricted to the foregoing description, content of the present invention is said all can implement and have said good result.
Claims (6)
1. method of utilizing citric acid to promote the broad bean cadmium pollution soil repair; It is characterized in that comprising: in containing the soil of cadmium contaminants, plant broad bean; And in soil, apply aqueous citric acid solution; When the plant broad bean grows into the fruit the or during maturity period of bearing pods, plant broad bean harvesting or whole is removed from contaminated soil.
2. by the said method of utilizing citric acid to promote the broad bean cadmium pollution soil repair of claim 1; It is characterized in that also comprising: said plant broad bean integral body is removed from contaminated soil after, plant the next group broad bean again, and in soil, apply aqueous citric acid solution; When the plant broad bean grows into the fruit the or during maturity period of bearing pods; Plant broad bean integral body is removed from contaminated soil, repeated said process, the cadmium content in soil reaches environmental safety standard.
3. by claim 1 or the 2 said methods of utilizing citric acid to promote the broad bean cadmium pollution soil repair, it is characterized in that: the amount of application of said aqueous citric acid solution is the aqueous citric acid solution 350L that per 666.7 square metres of soil application concentration are 2.5～20mmol/L.
4. by the said method of utilizing citric acid to promote the broad bean cadmium pollution soil repair of claim 3, it is characterized in that: the aqueous citric acid solution of said 350L is divided into and is manured into soil for 1～2 time, and be 0～5 day the blanking time of adjacent administered twice.
5. by the said method of utilizing citric acid to promote the broad bean cadmium pollution soil repair of claim 3, it is characterized in that: the concentration of said pollutant in soil cadmium is to contain 10～15 milligrams of cadmiums in every kilogram of soil.
6. by claim 1 or the 2 said methods of utilizing citric acid to promote the broad bean cadmium pollution soil repair, it is characterized in that also comprising: will gather in or the whole broad bean of from contaminated soil, removing adopts the method for burning to carry out harmless treatment.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203353A (en) * | 2013-01-22 | 2013-07-17 | 华南农业大学 | Method for restoring moderately Cd-contaminated soil by using vine and melon vegetables and light eluting agent |
| CN103340414A (en) * | 2013-07-12 | 2013-10-09 | 普洱永吉生物技术有限责任公司 | Method for removing cadmium in rice protein |
| CN103706629A (en) * | 2013-12-20 | 2014-04-09 | 四川农业大学 | Method for removing cadmium in contaminated soil through watermelon peel leaching |
| CN105290103A (en) * | 2015-11-23 | 2016-02-03 | 湖南农业大学 | Method for utilizing cadmium-resisting fungus aspergillus aculeatus for promoting festuca arundinacea to remedy cadmium contaminated soil |
| CN107674679A (en) * | 2017-08-21 | 2018-02-09 | 武汉和尔环保科技有限公司 | A kind of cadmium pollution soil renovation agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372016A (en) * | 2008-10-16 | 2009-02-25 | 昆明理工大学 | Plant repair method for treating soil having combined pollution of arsenic, lead and cadmium |
| CN101780466A (en) * | 2010-02-11 | 2010-07-21 | 仲恺农业工程学院 | Method for restoring soil polluted by heavy metal cadmium by using mesquite |
| CN102114490A (en) * | 2011-03-04 | 2011-07-06 | 中国科学院华南植物园 | Phytoremediation method for cadmium polluted farmland |
-
2011
- 2011-10-31 CN CN2011103357430A patent/CN102441562A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372016A (en) * | 2008-10-16 | 2009-02-25 | 昆明理工大学 | Plant repair method for treating soil having combined pollution of arsenic, lead and cadmium |
| CN101780466A (en) * | 2010-02-11 | 2010-07-21 | 仲恺农业工程学院 | Method for restoring soil polluted by heavy metal cadmium by using mesquite |
| CN102114490A (en) * | 2011-03-04 | 2011-07-06 | 中国科学院华南植物园 | Phytoremediation method for cadmium polluted farmland |
Non-Patent Citations (3)
| Title |
|---|
| 沈莉萍: "螯合剂和泥炭对苎麻吸收土壤镉的影响", 《环境科学》, vol. 30, no. 9, 30 September 2009 (2009-09-30), pages 2767 - 2772 * |
| 钟钼芝: "螯合剂对铀镉污染土壤中蚕豆幼苗生理特性影响", 《农业环境科学学报》, vol. 30, no. 4, 30 April 2011 (2011-04-30), pages 639 - 644 * |
| 黄亮: "柠檬酸、草酸和乙酸对污泥中镉、铅、铜和锌的去除效果", 《应用生态学报》, vol. 19, no. 3, 31 March 2008 (2008-03-31), pages 641 - 646 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203353A (en) * | 2013-01-22 | 2013-07-17 | 华南农业大学 | Method for restoring moderately Cd-contaminated soil by using vine and melon vegetables and light eluting agent |
| CN103203353B (en) * | 2013-01-22 | 2015-09-30 | 华南农业大学 | Rattan melon vegetables and light-duty eluent is utilized to repair the method for moderate Cd contaminated soil |
| CN103340414A (en) * | 2013-07-12 | 2013-10-09 | 普洱永吉生物技术有限责任公司 | Method for removing cadmium in rice protein |
| CN103340414B (en) * | 2013-07-12 | 2015-05-20 | 普洱永吉生物技术有限责任公司 | Method for removing cadmium in rice protein |
| CN103706629A (en) * | 2013-12-20 | 2014-04-09 | 四川农业大学 | Method for removing cadmium in contaminated soil through watermelon peel leaching |
| CN103706629B (en) * | 2013-12-20 | 2017-01-25 | 四川农业大学 | Method for removing cadmium in contaminated soil through watermelon peel leaching |
| CN105290103A (en) * | 2015-11-23 | 2016-02-03 | 湖南农业大学 | Method for utilizing cadmium-resisting fungus aspergillus aculeatus for promoting festuca arundinacea to remedy cadmium contaminated soil |
| CN107674679A (en) * | 2017-08-21 | 2018-02-09 | 武汉和尔环保科技有限公司 | A kind of cadmium pollution soil renovation agent |
| CN107674679B (en) * | 2017-08-21 | 2020-12-04 | 武汉和尔环保科技有限公司 | Cadmium-polluted soil remediation agent |
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Application publication date: 20120509 |