A method of producing a sorbent for the extraction of metal ions from solutions
The invention relates to silica chemically modified sorbents. Removal of metal ions was carried out by treatment of aqueous solutions of salts of these metals modified burnt breed field "Distant mountains", Kiselevsk, Kemerovo region. To improve the sorption properties of burnt rocks hold its modification with a solution of sodium phosphate concentration of 0.001 mol/l to 20 ml per 1 g of sorbent at a temperature of 20oC for 30 minutes the Invention allows to simplify the method of obtaining and increase the capacity of the sorbent to the ions of copper, cadmium and lead. table 1. The invention relates to silica chemically modified sorbents and can be used to extract metal ions from solutions.In industrial use, mainly reagent method of treatment of wastewater containing heavy metal ions.The disadvantage of this method is the low degree of wastewater treatment. The residual metal content of up to several mg/l, although Macs for many metals is set at 0.1 to 0.01 mg/L. in Addition, after conducting a purification reagent increases the salinity of the water, which makes it difficult dallascorben vegetable waste (sawdust, bark, sludge-lignin). As modifiers using different complexing agents.The disadvantages of this method include the low sorption capacity of the proposed sorbents. For example, the capacity of the most selective to ions of heavy metals sludge-lignin, modified 4-methyl-5-azanon-3,5-dandia-2,9, is 2.3 mg/g for copper ion (II) and 0.08 mg/g for cadmium ions (II) .Closest to the present invention is a method of purification of water from heavy metal ions using modified silica. The sorbent is produced by processing silica (silica gel 750/65 aminopropionic) solution diphenylthiourea phosphorus in an organic solvent. The molar ratio aminopropionic silica, and organic modifier base 1:(1-1,5): (1-2). The sorption capacity of the obtained sorbent by copper ions (II) 25 mg/g of sorbent .The disadvantage of this method is its multi-stage, using a large number of reagents and low sorption capacity obtained adsorbents.The aim of the invention is to simplify the method of preparation and increase the capacity and selectivity of the sorbent to copper ions (II), cadmium (II) and lead (II). In addition, the aim of the invention I the cleaning water from ions of copper (II), cadmium (II) and lead (II) as a sorbent use natural silica - burnt rock, modified phosphate and sodium carbonate.The method is as follows.As sorbent use burnt breed field "Distant mountains" , of Kiselyovsk, Kemerovo region the following composition, wt.%: SiO2- 68,2, Al2About3- 21,5, Fe2O3- 4,7, others - 5, with a total porosity of 50-60%. To improve the sorption properties of burnt rocks its process solutions-modifiers.Example 1. Into the flask make 1 g of burnt rocks with particle size of 1.5-2 mm, add 20 ml of sodium phosphate concentration of 0.001 mol/l, maintained at a temperature of 20oC for 30 minutes, the solid phase is separated by filtration, washed with distilled water. Get the sorbent, containing on the surface of the phosphate ions and having a sorption capacity for copper ions (II) - 36 mg/g), cadmium (II) - 21.2 mg/g) and lead (II) of 45.3 mg/,Example 2. In the conditions of example 1. Modified sorbent is carried out at a temperature of 60oC. the Capacity of the obtained sorbent by copper ions (II) - 38 mg/g), cadmium (II) - 22 mg/g) and lead (II) - 48.6 mg/,Example 3. In the conditions of example 1. Used as a modifier sodium carbonate with Conti temperature of 20oC. the Capacity of the obtained sorbent by copper ions (II) - 32 mg/g), cadmium (II) - 12.1 mg/g) and lead (II) of 37.7 mg/,Example 4. In the conditions of example 3. The modification is carried out at a temperature of 60oC. the Capacity of the obtained sorbent by copper ions (II) of 34.8 mg/g), cadmium (II) - 14 mg/g) and lead (II) - 39,6 mg/,Example 5. As sorbent use clean burning rock. Sorption of metal ions is carried out at a temperature of 20oC. the Capacity of the sorbent for ions of copper (II) - 13.9 mg/g), cadmium (II) - 4.2 mg/g) and lead (II) to 30.2 mg/,Example 6. In the conditions of example 5. Sorption of metal ions is carried out at a temperature of 60oC. the Capacity of the sorbent for ions of copper (II) - 16 mg/g), cadmium - 6,5 mg/g) and lead to 33.6 mg/,The table summarizes data for examples 1-6. The sorption capacity of the obtained sorbents for copper ions (II) is 14-38 mg/year Use as sorbent modified burnt rocks allows us to simplify the process of water purification. The obtained sorbents are characterized by selectivity towards copper ions (II), cadmium (II) and lead (II), low cost, they are non-toxic and have a high kinetic parameters.Sources of information 1. C. S. Timofeeva, O. C. Lykov, B. F. Kukharev // Chemistry and technology of water, 1990, T. 12, 6.2. A. C. 1613129 the USSR, MKI 01 D 15/08/ C. The Way of the sorbent for the extraction of metal ions from solutions including the modification of the silica carrier, characterized in that as the silica carrier used burnt breed of the following composition, wt. %: SIO, SIS268,2, Al2About321,5, Fe2About34,7, rest 5, with a total porosity of 50-60%, and as a modifier using sodium phosphate.
FIELD: water treatment.
SUBSTANCE: sorbent catalyst appropriate to produce drinking water contains, as carrier, filter material (ODM-2F), ground opokas with summary pore volume 0.45-0.55 cm3/g (98.0-99.5%) and manganese dioxide (0.5-2.0%). Sorption capacity of sorbent catalyst exceeds that of quartz sand-based "black sand" by a factor above 1.5.
EFFECT: increased sorption capacity.
1 tbl, 4 ex
FIELD: water treatment and sorbents.
SUBSTANCE: invention can be used for treating drinking or industrial water with high levels of heavy metal ions and polar organics, in particular dyes. Method comprises treatment of naturally occurring aluminosilicate (zeolite, swollen vermiculite, or mixture thereof) with chitosan solution in dilute acetic acid at aluminosilicate-to-chitosan solution weight ratio 1:1 and final supernatant pH value 8-9. Resulting plastic mass is granulated by extrusion through specified-size dies, granules obtained are dried and then treated with solution of humin acids taken in amount ensuring full binding of chitosan amino groups. Thereafter, sorbent granules are separated from solution and polymer layer formed on the surface of granules is hardened.
EFFECT: achieved combination of high sorbent capacity and good sorbent workability parameters, namely high filterability and strength caused by hardened surface layer on granules.
7 cl, 3 tbl
FIELD: methods of production of adsorbents on base of mineral carriers, mainly alumino-silicates; cleaning water from emulsified and dissolved petroleum products, as well as from spilled petroleum products.
SUBSTANCE: proposed method consists in introducing the alkaline-silicate additive at concentration of 10-20% in the amount of 0.2-3.0% of mass of alumino-silicate carrier into lignosulfonate solution at mixing the solution. Carrier is impregnated with this compound. Carrier impregnated with this compound is subjected to heat treatment at temperature of 700-900°C. Used as alumino-silicate carrier is vermiculite at size of particles of 0.25-8.0 mm or perlite at size of particles of 0.125-0.25 mm and used as alkaline-silicate additive is potassium silicate and/or sodium silicate at silica modulus of 2.8-4.2. Heat treatment of impregnated carrier is performed in flow of gases formed during combustion of hydrocarbon fuel: natural gas, diesel fuel and mazut. Adsorbent thus produced has increased (by approximately 2.5 times) sorption capacity relative to spilled, emulsified and dissolved petroleum products.
EFFECT: enhanced efficiency; increased sorption capacity.
7 cl, 1 tbl, 6 ex
FIELD: compositions of sorbents.
SUBSTANCE: the present innovation deals with removing sulfur from cracked gasoline and diesel oil. The variants of compositions have been suggested that contain zinc oxide and metals-promoters in zero-valent state. The obtained cracked gasoline due to applying the compositions declared contains decreased quantity of thiols and tetrahydrothiophenes.
EFFECT: higher efficiency.
64 cl, 9 ex, 4 tbl
SUBSTANCE: invention relates to technology of preparing mineral-based sorbents that can be used to treat aqueous solution containing heavy metals. Process according to invention employs siliceous zeolite ore from Volgograd deposit, which is crushed and dried at 120-130°C for 3.0-3.5°C.
EFFECT: increased sorbent efficiency.
SUBSTANCE: invention allows recycling the polymeric waste, wastes from oil manufacturing; it can be used in elimination of the oil and oil products outflow, and in sewage treatment. The method of preparation of fine-dispersed oil and oil products sorbent is proposed, which consists in dissolution of high-molecular foamed polystyrene wastes in the organic solvent under intensive stirring at concentration range 20-35% mass by polymer; solvent distillation by exposing the mixture under vacuum, the foamed polystyrene wastes are dissolved in acetone at room temperature within 2-3 minutes; the Circulite or filtration perlite are added to this solution and stirred, the received mixture is heated till 80-100°C and the received homogenous mass is cooled, divided into small fractions and grinded.
EFFECT: method simplifies technique for sorbent preparation and reduces price.
SUBSTANCE: method of obtaining the polymeric composition is proposed. It is obtained by inter-reacting a guanidine containing polymer and a natural mineral in which interaction of the water-soluble guanidine containing polymer and a natural mineral is accomplished by intercalation of the guanidine containing monomer in the interlayer space of montmorillonite and its subsequent polymerisation. The relation of components in the obtained composition is, mass%: montmorillonite 50-85, methacrylate of guanidine 15-50.
EFFECT: invention makes it possible to increase the sorption activity of the composition.
3 ex, 4 tbl
SUBSTANCE: invention concerns production of sorbent materials for natural and industrial water and sewage treatment for removal of multicomponent impurities, such as oil and oil products, organic substances, heavy metal cations, radionuclides, ammonium cations, and other impurities. Method for obtaining carbon-containing sorbents based on natural laminar alumosilicates involves simultaneous alumosilicate calcination and processing by hydrocarbons of oil origin at 500-700°C until hydrophobic nanolayer is formed and carbon concentration in sorbent reaches 0.7-1.1%.
EFFECT: obtaining sorbents displaying ion exchange activity and high oil absorption capacity.
2 tbl, 9 ex
FIELD: technological processes.
SUBSTANCE: invention concerns environmental protection, particularly adsorbent of compound action suitable for obtaining filtering material for both fine sewage purification and complex treatment of exhausted mineral oil. Adsorbent of compound action is obtained by mixing thermal power plant burnout with mineral sediment based on iron oxide-hydroxide extracted at ground water deferrisation plants, and undergoes thermal processing within 180-350°C interval for 3-6 hours. After oil treatment the adsorbent is recovered by heating at 300-350°C for 4-5 hours.
EFFECT: obtaining adsorbent of compound action suitable for both sewage treatment and complex treatment of exhausted mineral oils, from waste.
3 cl, 6 ex, 2 tbl
FIELD: technological processes; chemistry.
SUBSTANCE: method for preparation of filter-sorption material includes application of silica-alumina mineral on substrate. Substrate used is basalt fibers, and silica-alumina mineral is bentonitic clay with montmorillonite content of at least 80%. Basalt fibers are processed by 5-7% water solution of alkali, bentonitic clay that has been previously exposed to soda activation is added, then mixed with addition of binding agent selected from aluminium salts, at ratio of bentonitic clay and binding agent equal to 1:3, heated at temperature of 50-100°C for 2 hours, material is cooled, flushed by water and exposed to thermal activation at the temperature of 110-120°C.
EFFECT: higher sorption capacity of filter-sorption material capable of regeneration, and expansion of material application sphere.