CN103272834A - Application of selaginella pulvinata maxim to remediation of soil contaminated by heavy metals lead and zinc - Google Patents
Application of selaginella pulvinata maxim to remediation of soil contaminated by heavy metals lead and zinc Download PDFInfo
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- CN103272834A CN103272834A CN2013102064802A CN201310206480A CN103272834A CN 103272834 A CN103272834 A CN 103272834A CN 2013102064802 A CN2013102064802 A CN 2013102064802A CN 201310206480 A CN201310206480 A CN 201310206480A CN 103272834 A CN103272834 A CN 103272834A
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Abstract
The invention discloses application of selaginella pulvinata maxim to remediation of soil contaminated by heavy metals lead and zinc. Selaginella pulvinata maxim is planted in the soil contaminated by heavy metals lead and zinc. By utilizing the characteristic that selaginella pulvinata maxim enriches the heavy metals lead and zinc, selaginella pulvinata maxim is planted in the soil contaminated by lead and zinc and can absorb and accumulate the heavy metals lead and zinc and transfer most of the heavy metals lead and zinc onto the ground to achieve the aim of remedying the soil contaminated by the heavy metal lead. Selaginella pulvinata maxim does not need special management in the growth process, so the cost is lower and the operability is strong. A new variety resource is provided for the plant remediation method of the soil contaminated by heavy metals. Meanwhile, selaginella pulvinata maxim has higher medicinal values and has the functions of preventing and treating cancers, resisting inflammation and viruses, easing pains, reducing blood pressure and blood sugar and improving the human immunity.
Description
Technical field
The present invention relates to the recovery technique field of heavy metal pollution in the environment, particularly a kind of plant shape Selaginella tamariscina is in the application of the plumbous zinc pollution soil of remediating heavy metal.
Background technology
" natural source " and " non-natural source " is main source plumbous in the environment.The lead of natural source mainly is discharged in the atmospheric environment by natural phenomenas such as crustal movement, volcano eruption, tsunami and forest fires.Plumbous mean concentration in rainwater reaches 34 μ g/kg.The lead of non-natural source mainly comprises burnt gas, paint, coating, pigment, colored glaze, medicine, cosmetics, the chemical reagent of the exploitation, smelting, The Storage Battery Industry in China, glass work, powder metallurgy in heavy metal mine and the three wastes, fuel oil and bunker coal that relevant enterprise produces and contains the production of leadwork and use etc., but its primary pollution source is fuel oil and industrialness pollutions such as plumbous smeltings, battery.The annual non-plumbous naturally discharge capacity in the whole world reaches 34.92 ten thousand tons at present.Compare with the lead of natural source, the discharge capacity of non-natural source lead is apparently higher than the lead of natural source, and wherein, what discharge capacity was the highest is the burning of doped fuel, also is the main factor that causes lead contamination.
Parent rock is the main source of zinc in the natural soil, and the average content of zinc is about 80mg/kg in the lithosphere, and in zinc pollution soil, zinc content can be up to several thousand even several ten thousand mg/kg.Zinc in the soil is except from the rock matrix, also from atmospheric sedimentation, agricultural sludge garbage, agricultural chemicals, tailings of lead-zinc ore etc.The main source of zinc then is the smelting of coal and other fossil fuel and non-ferrous metal in the atmosphere.In addition, volcanic eruption and aerosol dust also can cause zinc pollution.And the soil around the soil in some geologic anomaly areas and the plumbous zinc ore also usually is subjected to the pollution of zinc.
Heavy metal lead zinc causes the pollution of soil and water body by all means, and by plant human beings'health is constituted a threat to.Therefore, plumbous zinc pollution soil is carried out ecological recovery and seem very important and urgent.
Phytoremediation technology refers to utilize heavy metal accumulation or super enriching plant excess from contaminated soil to absorb, accumulate one or more heavy metal elements, afterwards with phytomass (mainly being overground part) results and concentrated the processing, and then repeat said process so that heavy metal in soil content is reduced to acceptable level, because its operating cost is low, easy and simple to handle, do not cause secondary pollution, economy and ecological benefits are better, become the environmental friendliness technology of administering contaminated soil.
The enrichment that can be used for remediating lead-contaminated soil or the super enriching plant of finding has garden sorrel, Pinnate Beggarticks, vetiver, leaf mustard, white, the little squama sedge in Shandong etc. at present.However, the plant variety that can be used for remediating lead-contaminated soil is still extremely limited.
Cushion Selaginella tamariscina (Selaginella pulvinata Maxim) is commonly called as " nine dead whorlleaf stonecrop herbs ", and perennial herb is the herb of fern Selaginaceae (selaginellaceae) Selaginella (selaginella) plant cushion Selaginella tamariscina.It generally is grown in the rock seam of bare hills and mountains and arid more, and is extremely drought-resistant, also cold-resistant.In the weather arid, sprig is just rolled, and cuddles up in a heap, to keep the moisture in the body.In case obtain rainwater, temperature raises, and the sprig that crispaturas can open and flat coming.Be to go through the GB medicinal material that edition Chinese Pharmacopoeia 2010 editions records, the effect of tool activating blood to promote menstruation is used for through closing dysmenorrhoea, abdominal mass lump in the abdomen, injury from falling down.Modern pharmacology and clinical research show, Rock lily plant has cancer preventing and treating, anti-inflammatory, antiviral, analgesia, hypotensive, hypoglycemic and strengthen effect such as immune function of human body.
Summary of the invention
Main purpose of the present invention provides a kind of new application of plant variety cushion Selaginella tamariscina in the plumbous zinc pollution soil of remediating heavy metal.
In order to realize the foregoing invention purpose, the technical solution used in the present invention is as follows:
The cushion Selaginella tamariscina is characterized in that in the application of the plumbous zinc pollution soil of remediating heavy metal, and the cushion Selaginella tamariscina is planted in heavy metal lead zinc pollution soil, plumbous, zinc major part can be transported to aerial part, has the essential characteristic of lead, zinc super enriching plant.
2, cushion Selaginella tamariscina according to claim 1 is characterized in that in the application of the plumbous zinc pollution soil of remediating heavy metal: directly sow with the direct transplanting of described cushion Selaginella tamariscina or with cushion Selaginella tamariscina seed and plant in heavy metal lead zinc pollution soil.
3, cushion Selaginella tamariscina according to claim 1 is characterized in that in the application of the plumbous zinc pollution soil of remediating heavy metal: the aerial part that the cushion Selaginella tamariscina of plantation is carried out the periodical reaping plant.
The application of cushion Selaginella tamariscina in the plumbous zinc pollution soil of remediating heavy metal, it is characterized in that, plantation cushion Selaginella tamariscina (Selaginella pulvinata Maxim) in the mine soil that contains heavy metal lead zinc and pollution soil, absorb mine soil in a large number and pollute heavy metal lead, zinc in the soil by cushion Selaginella tamariscina root, and it is transferred to aerial part, thereby realize removing the purpose of heavy metal lead, zinc in the contaminated soil.
Cushion Selaginella tamariscina vitality is vigorous, is easy to survive, and can directly transplant or seed is directly sowed growth; Can survive under the natural conditions, in its whole growth process, not need to carry out special management.Treat can carry out periodical reaping when aerial part forms certain biomass, heavy metal lead, zinc are along with the harvesting of aerial part is removed in a large number; And do not need annual plantation, can effectively reduce the content of heavy metal lead in the contaminated soil, zinc, thereby the plumbous zinc pollution soil of remediating heavy metal.
Cushion Selaginella tamariscina among the present invention for year sward basis, is the herb of fern Selaginaceae (selaginellaceae) Selaginella (selaginella) plant cushion Selaginella tamariscina.Through experimental study, prove that it mainly has enriched character to heavy metal lead, zinc.The present invention takes full advantage of the cushion Selaginella tamariscina to the enriched character of heavy metal lead, zinc, directly sow to the soil of heavy metal lead zinc pollution with its seedling replanting or with its seed, heavy metal lead in the absorption and accumulation contaminated soil, zinc, and its major part is transported to aerial part, when treating that aerial part reaches certain biomass, but the toothing harvesting is extracted continuously, reduces lead, zinc content in the contaminated soil, reduces purpose plumbous in the contaminated soil, zinc content thereby reach.
Compared with prior art, the invention has the beneficial effects as follows:
The inventor proves that through experimental study the cushion Selaginella tamariscina has enriched character to heavy metal lead, zinc.The present invention utilizes the cushion Selaginella tamariscina to the enriched character of heavy metal lead, zinc just, directly sow to the soil of heavy metal lead zinc pollution with its seedling replanting or with its seed, but the heavy metal lead in the absorption and accumulation contaminated soil, zinc, and its major part is transported to aerial part, to reach the purpose of the plumbous zinc pollution soil of remediating heavy metal.And cushion Selaginella tamariscina vitality is vigorous, is easy to survive, and can survive under the natural conditions, does not need to carry out special management in its whole growth process; The phytoremediation of metal mine soil and heavy metal lead zinc pollution soil of also attaching most importance to has simultaneously been developed new plant resource variety.
The specific embodiment
Below in conjunction with the specific embodiment foregoing invention content of the present invention is described in further detail.
But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment.Not breaking away under the above-mentioned technological thought situation of the present invention, according to ordinary skill knowledge and customary means, make various replacements and change, all should comprise within the scope of the invention.
Embodiment 1
The sand culture experiment is adopted in test, and (test is commercially available building sand with sand, crosses the 2mm sieve, uses 2%HNO
3The solution soaked overnight is used the distilled water wash clean, every basin dress sand 500g after the airing), by Pb, Zn two heavy metal species the cushion Selaginella tamariscina is cultivated processing, heavy metal reagent adopts lead acetate and zinc sulfate.Pb is respectively: 0 (P0), 200 (P1), 400 (P2), 600 (P3), five concentration levels of 800 (P4) mg/L; Zn is respectively: 0 (Z0), 150 (Z1), 300 (Z2), four concentration levels of 450 (Z3) mg/L; Contrast is CK.Concrete test is handled by table 1, and each is handled and repeats 4 times.
Cushion Selaginella tamariscina shoot is transplanted to plastic tub (basin bore 13cm, high 12cm) carry out sand culture in, simply soak root before planting and handle, every basin is evenly planted 4 strains, 3 basins are planted in every processing, move into interior cultivation of transparent rain-proof shelter in Sichuan Agricultural University the 3rd teaching roof building then.Between culture period, watered one time of nutrition liquid (40mL/ basin, the concrete preparation of nutrient solution sees Table 2) every three days, water a deionized water (30mL/ basin) every three days, and the position of irregular exchange basin and basin is to weaken edge effect.The pre-cultivation carried out plumbous zinc processing again after 14 days, watered a heavy metal solution (15mL/ basin) every five days.Plant is cultivated after 64 days whole strain and extracts and carry out heavy metal lead and zinc Determination on content.Measurement result sees Table 3.
Table 1 heavy metal lead zinc processing list
Table 2Hoagland complete nutrition liquid
The plumbous zinc of table 3 is handled the plumbous zinc content of cushion Selaginella tamariscina down
By table 3 as seen, under single heavy metal lead is handled (processing numbering P1～P4), cushion Selaginella tamariscina aerial part lead content is all greater than under ground portion, and the aerial part lead content increases along with the increase of plumbous concentration for the treatment of, show the trend that increases progressively, and handle at P4 (800mg/L) and to be issued to maximum, maximum is 1082.66mg/kg; The under ground portion lead content also shows same trend except P3 (600mg/L) handles, also handle being issued to maximum at P4 (800mg/L), and maximum is 439.75mg/kg.Under lead-zinc Combined Processing, certain when the zinc processing horizontal, except individual treated, cushion Selaginella tamariscina aerial part lead content is all greater than under ground portion, and the aerial part lead content increases along with the increase of plumbous concentration for the treatment of, shows the trend that increases progressively; Under ground portion lead content trend is unanimous on the whole.Aerial part lead content and under ground portion lead content are all handled at P4Z1 (lead concentration is that 800mg/L, zinc concentration are 150mg/L) and are issued to maximum, maximum also is respectively simultaneously the maximum during all are handled for being respectively 1150.52mg/kg and 539.53mg/kg.
Find out that from above embodiment the cushion Selaginella tamariscina is coerced down at heavy metal lead, zinc and still can better grow, and proves that it has patience and resistance preferably; Its lead, zinc content are higher, and its major part is transported to aerial part, have the essential characteristic of plumbous super enriching plant.Therefore, this research can apply it to environment than the improvement of carrying out heavy metal lead zinc pollution soil in the rugged environment for heavy metal lead zinc pollution soil remediation and reparation provide a kind of new material, to reach the purpose of the plumbous zinc pollution soil of remediating heavy metal.
Claims (3)
1. the cushion Selaginella tamariscina is characterized in that in the application of the plumbous zinc pollution soil of remediating heavy metal, and the cushion Selaginella tamariscina is planted in heavy metal lead zinc pollution soil, plumbous, zinc major part can be transported to aerial part, has the essential characteristic of lead, zinc super enriching plant.
2. cushion Selaginella tamariscina according to claim 1 is characterized in that in the application of the plumbous zinc pollution soil of remediating heavy metal: directly sow with the direct transplanting of described cushion Selaginella tamariscina or with cushion Selaginella tamariscina seed and plant in heavy metal lead zinc pollution soil.
3. cushion Selaginella tamariscina according to claim 1 is characterized in that in the application of the plumbous zinc pollution soil of remediating heavy metal: the aerial part that the cushion Selaginella tamariscina of plantation is carried out the periodical reaping plant.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480642A (en) * | 2013-10-03 | 2014-01-01 | 桂林理工大学 | Phytoremediation method for eliminating manganese toxicity in soil |
| CN104025864A (en) * | 2014-06-17 | 2014-09-10 | 四川农业大学 | Method for improving cadmium-contaminated orchard soil restoring ability of shepherd's purse by aid of hyperaccumulation plants |
| CN104429548A (en) * | 2014-12-18 | 2015-03-25 | 湖南科技大学 | Exotic weed Solidagocanadensis control method |
| CN110800617A (en) * | 2019-12-16 | 2020-02-18 | 云南省农业科学院花卉研究所 | Tissue culture propagation method of revived plant selaginella pulvinata |
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2013
- 2013-05-20 CN CN2013102064802A patent/CN103272834A/en active Pending
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| 孙守琴: "苔藓对重金属的吸附特性及其在大气监测中的应用", 《西南农业大学硕士论文》 * |
| 陈彤等: "Pb/Zn尾矿上3种苔藓植物对重金属富集能力的比较", 《安徽农业科学》 * |
| 陈红琳等: "汉源铅锌矿区植物对Pb和Zn的积累及耐性研究", 《农业环境科学学报》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480642A (en) * | 2013-10-03 | 2014-01-01 | 桂林理工大学 | Phytoremediation method for eliminating manganese toxicity in soil |
| CN103480642B (en) * | 2013-10-03 | 2015-01-07 | 桂林理工大学 | Phytoremediation method for eliminating manganese toxicity in soil |
| CN104025864A (en) * | 2014-06-17 | 2014-09-10 | 四川农业大学 | Method for improving cadmium-contaminated orchard soil restoring ability of shepherd's purse by aid of hyperaccumulation plants |
| CN104025864B (en) * | 2014-06-17 | 2016-05-11 | 四川农业大学 | Use the method that enriching plant improves shepherd's purse reparation orchard cadmium pollution soil ability |
| CN104429548A (en) * | 2014-12-18 | 2015-03-25 | 湖南科技大学 | Exotic weed Solidagocanadensis control method |
| CN110800617A (en) * | 2019-12-16 | 2020-02-18 | 云南省农业科学院花卉研究所 | Tissue culture propagation method of revived plant selaginella pulvinata |
| CN110800617B (en) * | 2019-12-16 | 2022-08-02 | 云南省农业科学院花卉研究所 | Tissue culture propagation method of revived plant selaginella pulvinata |
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Application publication date: 20130904 |