Phytoremediation method of cleaning soil from heavy metals |
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IPC classes for russian patent Phytoremediation method of cleaning soil from heavy metals (RU 2229203):
 Composition for detoxification of soils / 2226436
The invention relates to the chemistry, namely detoxification of soils
 The method of cleaning soil from an underground contamination by phenols / 2225271
The invention relates to the biological treatment of soil from the subsurface pollution with phenols
 The method of remediation of oil contaminated soils / 2224604
The invention relates to the field of oil production and refining industries
 The method of restoring soil fertility / 2224398
The invention relates to agriculture, in particular to restore fertility to low productive arable land, contaminated land, erosion-prone slopes
 The method of cleaning soil from petroleum products and installation for its implementation / 2221652
The invention relates to chemical technology and can be used for purification of soil from oil
 The method of purification and remediation of contaminated oil and petroleum products soil / 2217246
The invention relates to microbiological clearance and remediation of soils contaminated with oil and oil products
 Composition for bioremediation of soils from oil and oil products / 2215596
The invention relates to the field of environmental protection, in particular to the cleaning of soils, surface and bottom-hole zones of wells from oil spills and oil pollutions
Method of reclamation of sludge pits / 2213121
The invention relates to mining, in particular to the stage of completion of the cycle sectional construction of oil and gas wells
 The electrokinetic method of cleaning soil from radioactive and toxic substances / 2211493
The invention relates to the field of environmental protection, in particular to the purification of natural and man-made materials, and most can be effectively used when cleaning clay soils containing radioactive and toxic substances
 The method for the elimination of pollution by oil or oil products / 2210439
The invention relates to the environment, specifically to the treatment of soil contaminated with petroleum substances, and can be used for restoration of soil fertility in agriculture and for soil where the most probable pollution associated with the extraction, production, transportation and storage of petroleum products in order to increase ecological safety
 A method of increasing seed production of licorice in natural thickets in the lower volga region / 2227970
The invention relates to agriculture and can be used on degraded irrigated lands to create licorice industry seeding and productivity of wild thickets sowing seeds licorice and licorice Ural high productivity in areas of growth, mainly in the South of the Lower Volga region
 The method of growing potatoes / 2226327
The invention relates to agriculture, and in particular to methods of growing potatoes
 How viticultural oil-contaminated soils / 2225086
The invention relates to the field of environmental protection and can be used to eliminate the toxic effect of petroleum hydrocarbons on soil and crop plants
The method of restoring soil fertility / 2224398
The invention relates to agriculture, in particular to restore fertility to low productive arable land, contaminated land, erosion-prone slopes
 The method of growing potatoes / 2224397
The invention relates to agriculture and can be used in potato production
 The way to improve old-growth seed grass goat's rue east / 2223622
The invention relates to agriculture and can be used for rejuvenation of old age (older than 7 years) seed grass goat's Rue East
 The method of disposal of excess activated sludge biological treatment facilities of petrochemical companies / 2223236
The invention relates to the protection of the environment and can be used in oil refining and oil industry and land reclamation and landfill of industrial waste
Method of leaching of saline soils / 2222182
The invention relates to agriculture and can be used for desalinization of saline soils
Method for restoration of contaminated soil, ground and water / 2243638
Method involves mechanical removal of excessive contaminants from surface and reducing toxicity of contaminated soil; sowing green manure crops and perennial grasses; preliminarily removing taking soil samples from contaminated surface and separating native contaminant destructors therefrom; after mechanical removal of contaminant from soil surface, providing sequential treatment of plot soil with water-soluble humates and at least double treatment with native contaminant destructors; mellowing soil; applying lime with mineral fertilizers such as saltpeter, double superphosphate and calcium chloride. Green manure crops are sown after application of fertilizers. Method further involves grinding green manure crops, plowing into soil and covering with soil by means of covering roll.
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(57) Abstract: The invention relates to the field of biological treatment of soils contaminated with heavy metals. Phytoremediation method includes seeding the soil with seeds of plants of the families Compositae, legumes and cereals in the ratio of 1:1:1 in the amount of 1.50-22,90 million pieces/ha followed by repeated mowing them during growing period, drying, and removing from the surface of the soil. Phytoremediation method of cleaning soil is environmentally friendly and can significantly reduce the content of heavy metals in contaminated soils. table 1. The invention relates to the field of biological treatment of soils contaminated with heavy metals. For cleanup of soils contaminated with heavy metals, used physical, chemical and biological methods. Used techniques such as physical adsorption of contaminated substances in soils (Orlov, D. S., Vasilevskaya C. D. Soil-ecological monitoring and protection of soils // soil science. - 1992. No. 6. - S. 36-38), adding sorbents-ameliorants (Kandyba E. C., Fateyeva A. M. Biologicals and soil fertility // Agrochemical Herald. - 1997. No. 2. - S. 7-9), removing the top layer of soil is khimicheskii Herald. - 1997. No. 3. - S. 36-41, Kireicheva L. C., I. Glazunov Century Methods of detoxification of soils contaminated with heavy metals // soil science. - 1995. No. 7. - S. 892-896), application of lime, zeolites and organic fertilizers (Earl, A., Velichko Century A. the Effectiveness of ameliorants on polluted by heavy metals soil Chemistry in agriculture. - 1998. No. 1. - S. 37-38, Dabagov M. C., Soloviev, A., Egorov, B. C. Impact of agrochemical means on the mobility of lead and cadmium in the forest light grey soil and their intake in plants // Agrochemistry. - 1998. No. 8. - S. 54-59). A common shortcoming of the above methods of cleaning soils from heavy metals is that they have a significant impact not only on the physico-chemical characteristics of soil, such as the acidity of the soil solution, but also lead to accumulation of heavy metals in it (Earl, A., Velichko Century A. the Effectiveness of ameliorants on polluted by heavy metals soil Chemistry in agriculture. - 1998. No. 1. - S. 37-38). It is known that some plants are able to accumulate heavy metals (Gravel I. C., Yakovlev, P., Petrov N. In., Sheets S. A. Contents of heavy metals in some species of medicinal plants of the Altai Krai // Rast. resources. - 1994. - So 30. - Vol.1-2. - S. 101-108). The invention consists in that in phytoremediation method of cleaning soil from heavy metals soil sow the seeds of plants of the families Compositae, legumes and cereals in the ratio of 1:1:1 in the amount of 1.50-22,90 million pieces/ha followed by repeated mowing them during growing period, drying, and removing from the surface of the soil. The proposed phytoremediation method of cleaning soil from heavy metals based on the different accumulation ability of the aerial parts of the plants to these metals. Sow seed of plants of the family Compositae: yarrow Achillea millefolium L, dandelion Taraxacum officinale Wigg., wormwood Artemisia absihthium L. and Thistle field Cirsium arvense (L.) Scop., of the legume family: red clover Trifolium pratense L. and cereal family: PoA pratensis Poa pratensis L. The method is as follows. On soils contaminated with heavy metals, sow seeds of plants of the families Compositae, legumes and cereals in the ratio of 1:1:1 in the amount of 1.50-22,90 million units per 1 ha (to provide more effective cleaning), then the plant is harvested in a period of rapid growth (during growing season), dried and removed from polowat aboveground parts of the plant in two ways: placed in a compost pit (in the humus is possible to produce organic fertilizer, rich in trace elements), or to burn and get fertilizer, rich in trace elements. The resulting organic and mineral fertilizers can be used successfully on soils deficient in micronutrients. For the entire growing period of the aerial parts of these plants are able to accumulate significant quantities of heavy metals. Given the fact that in the aboveground parts of herbaceous plants contains an average of from 77 to 79% water, and yield of green mass ranges from 600 to 1000 kg/ha, we can calculate the amount of heavy metals accumulated aboveground part of the plants with 1 km2soil for growing these types of plants in different soil types and under different conditions (table). Repeated mowing of the aerial parts of plants is carried out in the period of flowering. Studied plants of the family Compositae, legumes and cereals have a high accumulation ability to slightly acid, neutral and slightly alkaline soils. On floodplain meadow soils, lawns and gardens for purification from heavy metals, it is better to sow perennial plant clover and Kentucky bluegrass.Phytoremediation method of cleaning soil from heavy metals, characterized in that the soil sow the seeds of plants of the families Compositae, legumes and cereals in the ratio of 1:1:1 in the amount of 1.50-22,90 million pieces/ha followed by repeated mowing them during growing period, drying, and removing from the surface of the soil.
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