CN105772495A - Application of Sorbaria sorbifolia to remediation of heavy metal zinc pollution of soil - Google Patents
Application of Sorbaria sorbifolia to remediation of heavy metal zinc pollution of soil Download PDFInfo
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- CN105772495A CN105772495A CN201410774028.0A CN201410774028A CN105772495A CN 105772495 A CN105772495 A CN 105772495A CN 201410774028 A CN201410774028 A CN 201410774028A CN 105772495 A CN105772495 A CN 105772495A
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Abstract
The invention relates to the technical field of phytoremediation of heavy metal pollution in the environment, in particular to the application of a plant, namely, Sorbaria sorbifolia, to remediation of heavy metal zinc pollution of soil. A specific application method comprises the step that the Sorbaria sorbifolia is planted in pasture soil polluted by heavy metals. By the aid of the concentration characteristic of the Sorbaria sorbifolia to zinc, the Sorbaria sorbifolia is planted in soil polluted by the zinc so as to absorb and accumulate zinc heavy metal and transfer most of the heavy metal to aboveground parts, finally, the aboveground parts of the plant are harvested for incinerating treatment, and the heavy metal is extracted, so that the soil polluted by the zinc is remedied. Special management is not required in the growth process of the Sorbaria sorbifolia, so that the cost is lower, and the operability is high; meanwhile, a new plant resource variety is developed for phytoremediation of heavy metal pollution in the soil, and new improvement and development space is brought to deep development of the phytoremediation technology.
Description
Technical field
The present invention relates to the phytoremediation technology field of Heavy Metals In Environment, specifically utilize one
Contrayerva mountain Sorghum vulgare Pers., mountain Sorghum vulgare Pers. is in the application in repairing heavy metal in soil zinc pollution.
Background technology
In environment, zinc heavy metal pollution has the features such as disguise, chronicity and irreversibility, its pollutant poor mobility in media as well, holdup time length, can not be degraded by microorganisms, also can affect human health the most at last through approach such as food chain transmission, cause immeasurable impact.
Utilize heavy metal accumulation plant or super enriching plant (hyperaccumulator) to carry out one of study hotspot that phytoremediation is current environmental science, remediating heavy metal soil pollution shows great potentiality, it has small investment, efficiency height, and does not cause the multifrequency natures such as secondary pollution.Enriching plant or hyperaccumulative plant are mostly gathered in field in group's mode, in recent years, along with using of mining, urbanization process, transportation, pasture dirt filling, agricultural sludge and fertilizer, a large amount of zinc element is made to enter soil system, ecological environment and human health in serious threat, and zinc in soil pollution control is extremely urgent with reparation.
Meanwhile, along with the development of industrial and agricultural production, zinc in soil is polluted in the situation increased the weight of, and especially agricultural soil zinc pollution situation is troubling.And the plant variety resource being presently available for Grown In Zinc Contaminated Soil reparation is difficult to satisfied being actually needed, suddenly treats research further and expand available resources.Additionally, on the earth, plant resources is quite abundant, will determine that whether zinc is had corresponding enriched character by which plant, it is necessary to spend a large amount of human and material resources and financial resources, also the plant variety suited the requirements can just may not be filtered out, thus constraining efficiency and the application of phytoremediation.
Summary of the invention
The application is just for above technical problem, it is provided that a kind of for heavy metal in soil zinc pollution, especially heavy metal zinc contaminated soil in pasture, and has the plant of notable repairing effect, and namely mountain Sorghum vulgare Pers. is in the application in repairing heavy metal in soil zinc pollution.
In order to realize foregoing invention purpose, the technical solution used in the present invention is as follows:
The application in repairing heavy metal in soil zinc pollution of the mountain Sorghum vulgare Pers., is directly seeded in heavy metal zinc contaminated soil by mountain sorghum seeds, and the soil of heavy metal zinc pollution is repaired.
The seed of described mountain Sorghum vulgare Pers. selects spring and autumn to sow, and seed is for storing annual seed then.The implantation methods of described mountain Sorghum vulgare Pers. is cuttage seedling.
Described mountain Sorghum vulgare Pers. need to be periodically subject to regularly cradle when planting, and carries out ashing process to after its harvesting branch, then carries out extracting heavy metal and processes.
Come into bloom in heading futures when described mountain Sorghum vulgare Pers. is planted and carry out periodic cleaning, and carry out ashing process to after its harvesting branch, extract heavy metal.
The method for planting of mountain Sorghum vulgare Pers. specifically includes following steps:
(1), select seed raw then or the storage seed of a year to sow spring, keep soil to be in moisture state；
(2) when its heading futures come into bloom, namely it being gathered in local part, then its ground biomass is carried out ashing process by unification, and then the material after ashing carries out unified management or process；
(3) under ground portion does not take any measure, wait its continued growth, in time growing in Biomass and step (2) relatively, again it is gathered in local part, then its ground biomass is carried out ashing process by unification, and then the material after ashing carries out unified management or process.
The vitality of mountain Sorghum vulgare Pers. is very vigorous, it is easy to survive, and can carry out direct transplanting raw seedling then or be grown by seed sowing；Can survive under field conditions (factors), in its whole growth course, be made without special management.And compare with the herbaceous plant used by routine reparation, its natural propagation growth is quick, Biomass is big, does not need annual plantation.
Mountain Sorghum vulgare Pers. in the present invention, through experimental study, it was demonstrated that the heavy metals such as zinc (Zn) are mainly had enriched character by it.The present invention takes full advantage of the mountain Sorghum vulgare Pers. enriched character to heavy metals such as Zn, by its seedling replanting or by its seed sowing to contaminated by heavy metals soil, the heavy metals such as the Zn in absorption and accumulation contaminated soil, and its major part is transported to aerial parts, the content of Zn etc. in reduction soil, when aerial parts forms certain biomass, ashing processes aerial parts and extracts heavy metal continuously, thus reaching to reduce the purpose of Zn content in contaminated soil.
Compared with prior art, the invention has the beneficial effects as follows:
Inventor is found by experimental study, and the heavy metals such as zinc are had significant enriched character by mountain Sorghum vulgare Pers..The present invention utilizes the mountain Sorghum vulgare Pers. this enriched character to heavy metals such as zinc just, planted in soil, can the heavy metal such as absorption and accumulation zinc, and its major part is transported to aerial parts, by the aerial parts of regularly harvesting is carried out ashing process, to reach the purpose of repairing polluted soil.Owing to the vitality of mountain Sorghum vulgare Pers. is very vigorous, it is easy to survive, and its natural propagation growth is quickly, is all made without special management in its whole growth course, thus less costly, workable；The phytoremediation simultaneously also polluted for heavy metal in soil develops new plant resource variety, and the deep development for phytoremediation technology brings new progress and development space.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
But this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to following embodiment.
Embodiment 1:
Test site is located at the pasture that XX town, Sichuan is polluted by heavy metal zinc, and Zn content is 400-3000mg kg-1。
Mountain sorghum seedling is transplanted in adding in the potted plant soil that gradient concentration heavy metal zinc polluted.This was tested after March 15, test sets 5 process altogether, and respectively CK(does not add Zn) different with 4 add concentration tests, adding concentration is 400mgkg-1(T1), 1000mgkg-1(T2), 2000mgkg-1And 3000mgkg (T3)-1(T4), plant is cultivated in pasture, irregularly waters according to soil moisture practical situation and guarantees that soil moisture keeps moistening.Gather in the aerial parts of plant after 180 days, measure the ripe cumulant of mountain Sorghum vulgare Pers. aerial parts heavy metal Zn, concentration coefficient and coefficient of migration, and the aerial parts of harvesting is carried out ashing process.
Result of the test is as follows:
The least significant difference significance of difference analysis shows, it is 400mg kg that Zn adds concentration-1Process in, the upperground part biomass compared with the control, significantly rises, and the Biomass of mountain Sorghum vulgare Pers. is between 9.8-36.0, and under higher Zn pollution process level, namely adding concentration is 2000mg kg-1Time, the upperground part biomass compared with the control, there was no significant difference, but its Biomass is all high than comparison, it was shown that mountain Sorghum vulgare Pers. patience is strong.But adding concentration at Zn is 3000mg kg-1Time, the upperground part biomass is lower than comparison, illustrates that mountain Sorghum vulgare Pers. has stronger patience, but has certain limit, in Zn concentration more than 3000mg kg-1After, the growth of plant can be suppressed, but not notable with contrast difference.Illustrate that low concentration zinc processes the growth that can promote mountain Sorghum vulgare Pers., and Treatment with High Concentration Zinc processes the growth to mountain Sorghum vulgare Pers. and has certain inhibitory action.
Table 1. different disposal concentration is gone down the hill the Sorghum vulgare Pers. enrichment characteristics to zinc
Comprehensive mountain Sorghum vulgare Pers. is to the patience of zinc and enrichment characteristics, and Zn contaminated soil is had stronger repair ability by mountain Sorghum vulgare Pers..
Claims (6)
1. mountain Sorghum vulgare Pers. application in repairing heavy metal in soil zinc pollution, it is characterised in that: being directly seeded in heavy metal zinc contaminated soil by mountain sorghum seeds, the soil of heavy metal zinc pollution is repaired.
2. mountain according to claim 1 Sorghum vulgare Pers. application in repairing heavy metal in soil zinc pollution, it is characterised in that: the seed of described mountain Sorghum vulgare Pers. selects spring and autumn to sow, and seed is for storing annual seed then.
3. mountain according to claim 1 Sorghum vulgare Pers. application in repairing heavy metal in soil zinc pollution, it is characterised in that: the implantation methods of described mountain Sorghum vulgare Pers. is cuttage seedling.
4. mountain according to claim 1 Sorghum vulgare Pers. application in repairing heavy metal in soil zinc pollution, it is characterised in that: described mountain Sorghum vulgare Pers. need to be periodically subject to regularly cradle when planting, and carries out ashing process to after its harvesting branch, then carries out extracting heavy metal and processes.
5. mountain according to claim 4 Sorghum vulgare Pers. application in repairing heavy metal in soil zinc pollution, it is characterised in that: come into bloom in heading futures when described mountain Sorghum vulgare Pers. is planted and carry out periodic cleaning, and carry out ashing process to after its harvesting branch, extract heavy metal.
6. the application in repairing heavy metal in soil zinc pollution of the mountain Sorghum vulgare Pers. according to any one claim in claim 1-claim 5, it is characterised in that: the method for planting of mountain Sorghum vulgare Pers. specifically includes following steps:
(1), select seed raw then or the storage seed of a year to sow spring, keep soil to be in moisture state；
(2) when its heading futures come into bloom, namely it being gathered in local part, then its ground biomass is carried out ashing process by unification, and then the material after ashing carries out unified management or process；
(3) under ground portion does not take any measure, wait its continued growth, in time growing in Biomass and step (2) relatively, again it is gathered in local part, then its ground biomass is carried out ashing process by unification, and then the material after ashing carries out unified management or process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410774028.0A CN105772495A (en) | 2014-12-16 | 2014-12-16 | Application of Sorbaria sorbifolia to remediation of heavy metal zinc pollution of soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410774028.0A CN105772495A (en) | 2014-12-16 | 2014-12-16 | Application of Sorbaria sorbifolia to remediation of heavy metal zinc pollution of soil |
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| CN105772495A true CN105772495A (en) | 2016-07-20 |
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| CN201410774028.0A Pending CN105772495A (en) | 2014-12-16 | 2014-12-16 | Application of Sorbaria sorbifolia to remediation of heavy metal zinc pollution of soil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216376A (en) * | 2016-10-13 | 2016-12-14 | 兰州大学 | The method utilizing the Xinjiang poplar calcareous agricultural land soil of remediating heavy metal zinc pollution |
| CN106269851A (en) * | 2016-10-13 | 2017-01-04 | 兰州大学 | Utilize the method that Populus hopeiensis repairs arid biogeographic zone heavy metal cadmium soil |
| CN109702009A (en) * | 2018-12-12 | 2019-05-03 | 安徽农业大学 | The application and method of a kind of Festuca Arundinacea in processing municipal sludge heavy metal pollution |
| CN110199787A (en) * | 2019-05-21 | 2019-09-06 | 广东东阳光药业有限公司 | It is a kind of while regulating and controlling serpentgrass and bloom and bead up the method for bud |
-
2014
- 2014-12-16 CN CN201410774028.0A patent/CN105772495A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216376A (en) * | 2016-10-13 | 2016-12-14 | 兰州大学 | The method utilizing the Xinjiang poplar calcareous agricultural land soil of remediating heavy metal zinc pollution |
| CN106269851A (en) * | 2016-10-13 | 2017-01-04 | 兰州大学 | Utilize the method that Populus hopeiensis repairs arid biogeographic zone heavy metal cadmium soil |
| CN109702009A (en) * | 2018-12-12 | 2019-05-03 | 安徽农业大学 | The application and method of a kind of Festuca Arundinacea in processing municipal sludge heavy metal pollution |
| CN110199787A (en) * | 2019-05-21 | 2019-09-06 | 广东东阳光药业有限公司 | It is a kind of while regulating and controlling serpentgrass and bloom and bead up the method for bud |
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Application publication date: 20160720 |