13 research outputs found
Investigation of Removal of Hexavalent Chromium and Divalent Cobalt From Aqueous Solutions by Organo-montmorillonite Supported Iron Nanoparticles
A new class of nanoscale zero-valent iron particles supported on natural montmorillonite and organo-montmorillonite were synthesized and the feasibility for the removal of and was examined through laboratory batch test. The X β ray diffraction (XRD) and Fourier Transform Infrared spectrum (FTIR) investigation has been applied for determination of the particle size and mechanism of remediation process. The aim of this study was to enhance the reduction of persistent environmental pollutants difficult to degrade by immobilization of nanoscale zero-valent iron on an organo-montmorillonite. Batch experiments indicated that the reduction of both and was much greater with organo-montmorillonite supported iron nanoparticles reaching removal rate up to 98.5% and 95.6% respectively at the initial metal concentrations of 50 mg/L. Iron and crystalline iron oxide were detected by X-ray diffraction patterns. In the FTIR spectrum, CH2 groups were found in iron nanoparticles supported on hexadecyltrimethylammonium bromide modified montmorillonite (HDTMA-Mont/nZVI) particles but were significantly weakened in comparison with the spectrum of hexadecyl trimethylammonium bromide (HDTMA). Other factor that affects the efficiency of heavy metals removal such as pH values was also investigated. The obtained data and review of the current literature have given the opportunity to figure out the mechanisms of and removal which may thus promote the industrial application of nZVI technique in environmental remediation by changing the hydrophilic β hydrophobic properties of source systems
INVESTIGATION OF REMOVAL OF HEXAVALENT CHROMIUM AND DIVALENT COBALT FROM AQUEOUS SOLUTIONS BY ORGANO-MONTMORILLONITE SUPPORTED IRON NANOPARTICLES
A new class of nanoscale zero-valent iron particles supported on natural montmorillonite and organo-montmorillonite were synthesized and the feasibility for the removal of and was examined through laboratory batch test. The X β ray diffraction (XRD) and Fourier Transform Infrared spectrum (FTIR) investigation has been applied for determination of the particle size and mechanism of remediation process. The aim of this study was to enhance the reduction of persistent environmental pollutants difficult to degrade by immobilization of nanoscale zero-valent iron on an organo-montmorillonite. Batch experiments indicated that the reduction of both and was much greater with organo-montmorillonite supported iron nanoparticles reaching removal rate up to 98.5% and 95.6% respectively at the initial metal concentrations of 50 mg/L. Iron and crystalline iron oxide were detected by X-ray diffraction patterns. In the FTIR spectrum, CH2 groups were found in iron nanoparticles supported on hexadecyltrimethylammonium bromide modified montmorillonite (HDTMA-Mont/nZVI) particles but were significantly weakened in comparison with the spectrum of hexadecyl trimethylammonium bromide (HDTMA). Other factor that affects the efficiency of heavy metals removal such as pH values was also investigated. The obtained data and review of the current literature have given the opportunity to figure out the mechanisms of and removal which may thus promote the industrial application of nZVI technique in environmental remediation by changing the hydrophilic β hydrophobic properties of source systems
ΠΠΈΠ²ΡΠ΅Π½Π½Ρ Π±ΡΠ΄ΠΎΠ²ΠΈ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΎΠ³ΠΎ ΠΏΠ°Π»ΠΈΠ³ΠΎΡΡΠΊΡΡΠ°
The object of research is a natural silicate with a layer-band structure - palygorskite of the Cherkasy deposit (Ukraine). One of the problematic areas in the technology of sorption purification of aqueous media using palygorskite is the absence of kinship of the mineral in anionic forms of pollution. Therefore, its use as a sorbent to extract ions Cr(VI), U(VI), As(V), which are in aqueous media in anionic forms, is ineffective.In the course of the study, XRD methods, thermal analysis and a spectrophotometric method are used to study the sorption properties of synthesized materials.The structures of palygorskite and modified samples are studied using -ray diffraction analysis (XRD). After treatment with Na-PG, changes in its crystal structure are observed. There is a shift of the peaks toward large angles 2ΞΈ. Comparison of the diffractograms OPG-1 and OPG-2 allows to conclude that the reflection with the same indices is not relatively displaced, but their intensity is different. In OPG-2, the intensity of most peaks is higher.The thermal properties of palygorskite and the resulting composites are studied. According to the results of sorption studies, it is established that palygorskite modified at a ratio of CEC/surfactant=1 can remove up to 97.8Β % of Cr(VI) ions. This is 16.2 times more than adsorbing natural palygorskite.As a result of studies of the Cr(VI) adsorption on Na-PG, OPG-1 and OPG-2, it has been shown that modifying the palygorskite surface by GDTMA can increase the adsorption of Cr(VI) from 0.45 mg/g and 9.2 mg/g, respectively. And for the initial concentration of the solution is 100 mg/l to 4.2 and 12.3 mg/l, respectively.Increasing the volume of practical use of natural silicate materials contributes to a comprehensive solution of environmental issues, resource saving and technology for the production of sorbents for the extraction of anionic forms of Cr(VI) and U(VI) from aqueous solutions.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΏΠ°Π»ΡΠ³ΠΎΡΡΠΊΠΈΡΠ°, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΊΠ°ΡΠΈΠΎΠ½Π½ΡΠΌ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΡΠΌ Π²Π΅ΡΠ΅ΡΡΠ²ΠΎΠΌ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΎΠ½ΠΈΠΉ Π±ΡΠΎΠΌΠΈΠ΄ΠΎΠΌ Ρ ΡΠ΅Π»ΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΡΠΎΡΠ±Π΅Π½ΡΠΎΠ² Π΄Π»Ρ ΠΎΡΠΈΡΡΠΊΠΈ Π²ΠΎΠ΄Π½ΡΡ
ΡΡΠ΅Π΄ ΠΎΡ ΠΈΠΎΠ½ΠΎΠ² ΡΡΠΆΠ΅Π»ΡΡ
ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ² ΠΈ ΡΠ°Π΄ΠΈΠΎΠ½ΡΠΊΠ»ΠΈΠ΄ΠΎΠ². ΠΠ·ΡΡΠ΅Π½Π° ΡΡΡΡΠΊΡΡΡΠ° ΠΏΠ°Π»ΡΠ³ΠΎΡΡΠΊΠΈΡ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ°Π·ΠΎΠ²ΠΎΠ³ΠΎ ΠΈ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°. ΠΡΡΠ²Π»Π΅Π½Ρ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΡΠ΅ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»Ρ, Π² ΠΊΠΎΡΠΎΡΡΡ
ΠΏΡΠΎΠΈΡΡ
ΠΎΠ΄ΠΈΡ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΡΡΡΡΠΊΡΡΡΡ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π° ΠΈ ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΎΠ², ΡΠΎΠΏΡΠΎΠ²ΠΎΠΆΠ΄Π°ΡΡΠ΅Π΅ΡΡ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ ΠΈΡ
ΡΠΈΠ·ΠΈΠΊΠΎ-Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ².Β ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ ΠΏΠ°Π»ΠΈΠ³ΠΎΡΡΡΠΊΡΡΠ°, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΎΠ³ΠΎ ΠΊΠ°ΡΡΠΎΠ½Π½ΠΎΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΠΎΡ ΡΠ΅ΡΠΎΠ²ΠΈΠ½ΠΎΡ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΎΠ½ΡΠΉ Π±ΡΠΎΠΌΠΈΠ΄ΠΎΠΌ Π· ΠΌΠ΅ΡΠΎΡ ΠΎΡΡΠΈΠΌΠ°Π½Π½Ρ ΡΠΎΡΠ±Π΅Π½ΡΡΠ² Π΄Π»Ρ ΠΎΡΠΈΡΠ΅Π½Π½Ρ Π²ΠΎΠ΄Π½ΠΈΡ
ΡΠ΅ΡΠ΅Π΄ΠΎΠ²ΠΈΡ Π²ΡΠ΄ ΠΉΠΎΠ½ΡΠ² Π²Π°ΠΆΠΊΠΈΡ
ΠΌΠ΅ΡΠ°Π»ΡΠ² ΡΠ° ΡΠ°Π΄ΡΠΎΠ½ΡΠΊΠ»ΡΠ΄ΡΠ². ΠΠΈΠ²ΡΠ΅Π½ΠΎ ΡΡΡΡΠΊΡΡΡΡ ΠΏΠ°Π»ΠΈΠ³ΠΎΡΡΡΠΊΡΡΡΠ² Π·Π° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ°Π·ΠΎΠ²ΠΎΠ³ΠΎ ΡΠ° ΡΠ΅ΡΠΌΡΡΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΡΠ·Ρ. ΠΠΈΡΠ²Π»Π΅Π½ΠΎ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½Ρ ΡΠ½ΡΠ΅ΡΠ²Π°Π»ΠΈ, Π² ΡΠΊΠΈΡ
Π²ΡΠ΄Π±ΡΠ²Π°ΡΡΡΡΡ Π·ΠΌΡΠ½Π° ΡΡΡΡΠΊΡΡΡΠΈ Π²ΠΈΡ
ΡΠ΄Π½ΠΎΠ³ΠΎ ΠΌΠ°ΡΠ΅ΡΡΠ°Π»Ρ ΡΠ° ΡΠΈΠ½ΡΠ΅Π·ΠΎΠ²Π°Π½ΠΈΡ
ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡΠ², ΡΠΎ ΡΡΠΏΡΠΎΠ²ΠΎΠ΄ΠΆΡΡΡΡΡΡ Π·ΠΌΡΠ½ΠΎΡ ΡΡ
ΡΡΠ·ΠΈΠΊΠΎ-Ρ
ΡΠΌΡΡΠ½ΠΈΡ
Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ.
ΠΠΈΠ²ΡΠ΅Π½Π½Ρ Π±ΡΠ΄ΠΎΠ²ΠΈ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΎΠ³ΠΎ ΠΏΠ°Π»ΠΈΠ³ΠΎΡΡΠΊΡΡΠ°
The object of research is a natural silicate with a layer-band structure - palygorskite of the Cherkasy deposit (Ukraine). One of the problematic areas in the technology of sorption purification of aqueous media using palygorskite is the absence of kinship of the mineral in anionic forms of pollution. Therefore, its use as a sorbent to extract ions Cr(VI), U(VI), As(V), which are in aqueous media in anionic forms, is ineffective.In the course of the study, XRD methods, thermal analysis and a spectrophotometric method are used to study the sorption properties of synthesized materials.The structures of palygorskite and modified samples are studied using -ray diffraction analysis (XRD). After treatment with Na-PG, changes in its crystal structure are observed. There is a shift of the peaks toward large angles 2ΞΈ. Comparison of the diffractograms OPG-1 and OPG-2 allows to conclude that the reflection with the same indices is not relatively displaced, but their intensity is different. In OPG-2, the intensity of most peaks is higher.The thermal properties of palygorskite and the resulting composites are studied. According to the results of sorption studies, it is established that palygorskite modified at a ratio of CEC/surfactant=1 can remove up to 97.8Β % of Cr(VI) ions. This is 16.2 times more than adsorbing natural palygorskite.As a result of studies of the Cr(VI) adsorption on Na-PG, OPG-1 and OPG-2, it has been shown that modifying the palygorskite surface by GDTMA can increase the adsorption of Cr(VI) from 0.45 mg/g and 9.2 mg/g, respectively. And for the initial concentration of the solution is 100 mg/l to 4.2 and 12.3 mg/l, respectively.Increasing the volume of practical use of natural silicate materials contributes to a comprehensive solution of environmental issues, resource saving and technology for the production of sorbents for the extraction of anionic forms of Cr(VI) and U(VI) from aqueous solutions.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΏΠ°Π»ΡΠ³ΠΎΡΡΠΊΠΈΡΠ°, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΊΠ°ΡΠΈΠΎΠ½Π½ΡΠΌ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΡΠΌ Π²Π΅ΡΠ΅ΡΡΠ²ΠΎΠΌ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΎΠ½ΠΈΠΉ Π±ΡΠΎΠΌΠΈΠ΄ΠΎΠΌ Ρ ΡΠ΅Π»ΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΡΠΎΡΠ±Π΅Π½ΡΠΎΠ² Π΄Π»Ρ ΠΎΡΠΈΡΡΠΊΠΈ Π²ΠΎΠ΄Π½ΡΡ
ΡΡΠ΅Π΄ ΠΎΡ ΠΈΠΎΠ½ΠΎΠ² ΡΡΠΆΠ΅Π»ΡΡ
ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ² ΠΈ ΡΠ°Π΄ΠΈΠΎΠ½ΡΠΊΠ»ΠΈΠ΄ΠΎΠ². ΠΠ·ΡΡΠ΅Π½Π° ΡΡΡΡΠΊΡΡΡΠ° ΠΏΠ°Π»ΡΠ³ΠΎΡΡΠΊΠΈΡ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ°Π·ΠΎΠ²ΠΎΠ³ΠΎ ΠΈ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°. ΠΡΡΠ²Π»Π΅Π½Ρ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΡΠ΅ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»Ρ, Π² ΠΊΠΎΡΠΎΡΡΡ
ΠΏΡΠΎΠΈΡΡ
ΠΎΠ΄ΠΈΡ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΡΡΡΡΠΊΡΡΡΡ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π° ΠΈ ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΎΠ², ΡΠΎΠΏΡΠΎΠ²ΠΎΠΆΠ΄Π°ΡΡΠ΅Π΅ΡΡ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ ΠΈΡ
ΡΠΈΠ·ΠΈΠΊΠΎ-Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ².Β ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ ΠΏΠ°Π»ΠΈΠ³ΠΎΡΡΡΠΊΡΡΠ°, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΎΠ³ΠΎ ΠΊΠ°ΡΡΠΎΠ½Π½ΠΎΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΠΎΡ ΡΠ΅ΡΠΎΠ²ΠΈΠ½ΠΎΡ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΎΠ½ΡΠΉ Π±ΡΠΎΠΌΠΈΠ΄ΠΎΠΌ Π· ΠΌΠ΅ΡΠΎΡ ΠΎΡΡΠΈΠΌΠ°Π½Π½Ρ ΡΠΎΡΠ±Π΅Π½ΡΡΠ² Π΄Π»Ρ ΠΎΡΠΈΡΠ΅Π½Π½Ρ Π²ΠΎΠ΄Π½ΠΈΡ
ΡΠ΅ΡΠ΅Π΄ΠΎΠ²ΠΈΡ Π²ΡΠ΄ ΠΉΠΎΠ½ΡΠ² Π²Π°ΠΆΠΊΠΈΡ
ΠΌΠ΅ΡΠ°Π»ΡΠ² ΡΠ° ΡΠ°Π΄ΡΠΎΠ½ΡΠΊΠ»ΡΠ΄ΡΠ². ΠΠΈΠ²ΡΠ΅Π½ΠΎ ΡΡΡΡΠΊΡΡΡΡ ΠΏΠ°Π»ΠΈΠ³ΠΎΡΡΡΠΊΡΡΡΠ² Π·Π° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ°Π·ΠΎΠ²ΠΎΠ³ΠΎ ΡΠ° ΡΠ΅ΡΠΌΡΡΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΡΠ·Ρ. ΠΠΈΡΠ²Π»Π΅Π½ΠΎ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½Ρ ΡΠ½ΡΠ΅ΡΠ²Π°Π»ΠΈ, Π² ΡΠΊΠΈΡ
Π²ΡΠ΄Π±ΡΠ²Π°ΡΡΡΡΡ Π·ΠΌΡΠ½Π° ΡΡΡΡΠΊΡΡΡΠΈ Π²ΠΈΡ
ΡΠ΄Π½ΠΎΠ³ΠΎ ΠΌΠ°ΡΠ΅ΡΡΠ°Π»Ρ ΡΠ° ΡΠΈΠ½ΡΠ΅Π·ΠΎΠ²Π°Π½ΠΈΡ
ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡΠ², ΡΠΎ ΡΡΠΏΡΠΎΠ²ΠΎΠ΄ΠΆΡΡΡΡΡΡ Π·ΠΌΡΠ½ΠΎΡ ΡΡ
ΡΡΠ·ΠΈΠΊΠΎ-Ρ
ΡΠΌΡΡΠ½ΠΈΡ
Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ.
ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΡΡΡΠΊΡΡΡΠΈ ΡΠ° ΡΠΎΡΠ±ΡΡΠΉΠ½ΠΈΡ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΎΠ³ΠΎ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΎΠ½ΡΠΉ Π±ΡΠΎΠΌΡΠ΄ΠΎΠΌ
The object of research is a natural layered silicate β montmorillonite of the Cherkasy deposit (Ukraine) with the general formula (Ca,Na)(Π1,Mg,Fe)2(OH)2[(Si,Π1)4Π10]ΓnH2O. The chemical composition of the mineral: SiO2 β 51.9 %, Πl2O3 β 17.10 %, Fe2O3 β 7.92 %, MgO β 1.18 %, Na2O, K2O and CaO up to 2 % and Π2Π β 8.78 %. Montmorillonite is characterized by a significant dispersion of particles and the presence of a large number of sorption centers on its surface is capable of cation exchange. One of the most problematic places is that montmorillonite is practically incapable of removing pollutants present in water as anions. In order to obtain sorbents capable of removing heavy metal anions, the surface of montmorillonite was modified with the cationic surfactant hexadecyltrimethylammonium bromide.During the study, X-ray diffraction analysis, scanning electron microscopy, infrared spectroscopy, and thermal analysis were used to study the structure of the initial montmorillonite and its organomodified forms. The spectrophotocolorimetric method is used to study the sorption properties of composites.The work confirms that hexadecyltrimethylammonium bromide molecules are sorbed not only on the outer surface of the particles, but also migrate between the aluminosilicate packets of the layered structure of montmorillonite. Sorption studies have confirmed that the use of organomodified forms of montmorillonite has increased the degree of extraction of chromium (VI) ions from 32 % to 96 %. The resulting sorbents make it possible to purify contaminated water with a chromium (VI) concentration of 1 mg/dm3 to the maximum permissible concentrations. This is due to the fact that the organomodification of the surface of montmorillonite has a number of features and allows to change the structure of the original mineral, as well as recharge the clay surface from negative to positive. This makes it possible to use organoclay to remove inorganic toxicants in anionic forms. Compared with similar known ones, the obtained composites provide the removal of even trace amounts of heavy metal anions from aqueous media.ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΏΡΠΈΡΠΎΠ΄Π½ΡΠΉ ΡΠ»ΠΎΠΈΡΡΡΠΉ ΡΠΈΠ»ΠΈΠΊΠ°Ρ β ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡ Π§Π΅ΡΠΊΠ°ΡΡΠΊΠΎΠ³ΠΎ ΠΌΠ΅ΡΡΠΎΡΠΎΠΆΠ΄Π΅Π½ΠΈΡ (Π£ΠΊΡΠ°ΠΈΠ½Π°) Ρ ΠΎΠ±ΡΠ΅ΠΉ ΡΠΎΡΠΌΡΠ»ΠΎΠΉ (Ca,Na)(Π1,Mg,Fe)2(OH)2[(Si,Π1)4Π10]ΓnH2O. Π₯ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΠΎΡΡΠ°Π² ΠΌΠΈΠ½Π΅ΡΠ°Π»Π°: SiO2 β 51,9 %, Πl2O3 β 17,10 %, Fe2O3 β 7,92 %, MgO β 1,18 %, Na2O, K2O Ρ Π‘Π°Π Π΄ΠΎ 2 % Ρ Π2O β 8,78 %. ΠΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΠ΅ΡΡΡ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π΄ΠΈΡΠΏΠ΅ΡΡΠ½ΠΎΡΡΡΡ ΡΠ°ΡΡΠΈΡ ΠΈ Π½Π°Π»ΠΈΡΠΈΠ΅ΠΌ Π±ΠΎΠ»ΡΡΠΎΠ³ΠΎ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° ΡΠΎΡΠ±ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ΅Π½ΡΡΠΎΠ² Π½Π° Π΅Π³ΠΎ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ, ΠΊΠΎΡΠΎΡΡΠ΅ ΡΠΏΠΎΡΠΎΠ±Π½Ρ ΠΊ ΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΌΡ ΠΎΠ±ΠΌΠ΅Π½Ρ. ΠΠ΄Π½ΠΈΠΌ ΠΈΠ· ΡΠ°ΠΌΡΡ
ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ½ΡΡ
ΠΌΠ΅ΡΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠΎ, ΡΡΠΎ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ Π½Π΅ ΡΠΏΠΎΡΠΎΠ±Π΅Π½ ΠΊ ΡΠ΄Π°Π»Π΅Π½ΠΈΡ Π·Π°Π³ΡΡΠ·Π½ΠΈΡΠ΅Π»Π΅ΠΉ, ΠΏΡΠΈΡΡΡΡΡΠ²ΡΡΡΠΈΡ
Π² Π²ΠΎΠ΄Π°Ρ
Π² Π²ΠΈΠ΄Π΅ Π°Π½ΠΈΠΎΠ½ΠΎΠ². Π‘ ΡΠ΅Π»ΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΡΠΎΡΠ±Π΅Π½ΡΠΎΠ², ΡΠΏΠΎΡΠΎΠ±Π½ΡΡ
ΡΠ΄Π°Π»ΡΡΡ Π°Π½ΠΈΠΎΠ½Ρ ΡΡΠΆΠ΅Π»ΡΡ
ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ², Π±ΡΠ»ΠΎ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡΠ° ΠΊΠ°ΡΠΈΠΎΠ½Π½ΡΠΌ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΡΠΌ Π²Π΅ΡΠ΅ΡΡΠ²ΠΎΠΌ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΌΠΎΠ½ΠΈΠΉ Π±ΡΠΎΠΌΠΈΠ΄ΠΎΠΌ.Π Ρ
ΠΎΠ΄Π΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π΄Π»Ρ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ ΡΡΡΡΠΊΡΡΡΡ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡΠ° ΠΈ Π΅Π³ΠΎ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠΎΡΠΌ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈΡΡ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ°Π·ΠΎΠ²ΡΠΉ Π°Π½Π°Π»ΠΈΠ·, ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ°Ρ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½Π°Ρ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΡ, ΠΈΠ½ΡΡΠ°ΠΊΡΠ°ΡΠ½Π°Ρ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡ, ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΈΠΉ Π°Π½Π°Π»ΠΈΠ·. ΠΠ»Ρ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ ΡΠΎΡΠ±ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΎΠ² ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΊΠΎΠ»ΠΎΡΠΈΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄.Π ΡΠ°Π±ΠΎΡΠ΅ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΎ, ΡΡΠΎ ΠΌΠΎΠ»Π΅ΠΊΡΠ»Ρ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΌΠΎΠ½ΠΈΠΉ Π±ΡΠΎΠΌΠΈΠ΄Π° ΡΠΎΡΠ±ΠΈΡΡΡΡΡΡ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ Π½Π° Π²Π½Π΅ΡΠ½Π΅ΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΠ°ΡΡΠΈΡ, Π½ΠΎ ΠΈ ΠΌΠΈΠ³ΡΠΈΡΡΡΡ ΠΌΠ΅ΠΆΠ΄Ρ Π°Π»ΡΠΌΠΎΡΠΈΠ»ΠΈΠΊΠ°ΡΠ½ΡΠΌΠΈ ΠΏΠ°ΠΊΠ΅ΡΠ°ΠΌΠΈ ΡΠ»ΠΎΠΈΡΡΠΎΠΉ ΡΡΡΡΠΊΡΡΡΡ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡΠ°. Π‘ΠΎΡΠ±ΡΠΈΠΎΠ½Π½ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠ΄ΠΈΠ»ΠΈ, ΡΡΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠΎΡΠΌ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡΠ° ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΠΏΠΎΠ²ΡΡΠΈΡΡ ΡΡΠ΅ΠΏΠ΅Π½Ρ ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ ΠΈΠΎΠ½ΠΎΠ² Ρ
ΡΠΎΠΌΠ° (VI) Ρ 32Β % Π΄ΠΎ 96Β %. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΡΠΎΡΠ±Π΅Π½ΡΡ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡ ΠΎΡΠΈΡΡΠΈΡΡ Π·Π°Π³ΡΡΠ·Π½Π΅Π½Π½ΡΡ Π²ΠΎΠ΄Ρ Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠ΅ΠΉ Ρ
ΡΠΎΠΌΠ° (VI) ΡΠ°Π²Π½ΠΎΠΉ 1Β ΠΌΠ³/Π΄ΠΌ3 Π΄ΠΎ Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ ΠΏΡΠ΅Π΄Π΅Π»ΡΠ½ΠΎ Π΄ΠΎΠΏΡΡΡΠΈΠΌΡΡ
ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΉ. ΠΡΠΎ ΡΠ²ΡΠ·Π°Π½ΠΎ Ρ ΡΠ΅ΠΌ, ΡΡΠΎ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡΠ° ΠΈΠΌΠ΅Π΅Ρ ΡΡΠ΄ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ ΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΈΠ·ΠΌΠ΅Π½ΠΈΡΡ ΡΡΡΡΠΊΡΡΡΡ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΌΠΈΠ½Π΅ΡΠ°Π»Π°, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΠ΅ΡΠ΅Π·Π°ΡΡΠ΄ΠΈΡΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡ Π³Π»ΠΈΠ½Ρ ΠΎΡ ΠΎΡΡΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠΉ Π΄ΠΎ ΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ. ΠΠ»Π°Π³ΠΎΠ΄Π°ΡΡ ΡΡΠΎΠΌΡ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π΅ΡΡΡ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΎΡΠ³Π°Π½ΠΎΠ³Π»ΠΈΠ½ Π΄Π»Ρ ΡΠ΄Π°Π»Π΅Π½ΠΈΡ Π½Π΅ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΎΠΊΡΠΈΠΊΠ°Π½ΡΠΎΠ², Π½Π°Ρ
ΠΎΠ΄ΡΡΠΈΡ
ΡΡ Π² Π°Π½ΠΈΠΎΠ½Π½ΡΡ
ΡΠΎΡΠΌΠ°ΠΌ. ΠΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ Π°Π½Π°Π»ΠΎΠ³ΠΈΡΠ½ΡΠΌΠΈ ΠΈΠ·Π²Π΅ΡΡΠ½ΡΠΌΠΈ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡ ΡΠ΄Π°Π»Π΅Π½ΠΈΠ΅ Π΄Π°ΠΆΠ΅ ΡΠ»Π΅Π΄ΠΎΠ²ΡΡ
ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ² Π°Π½ΠΈΠΎΠ½ΠΎΠ² ΡΡΠΆΠ΅Π»ΡΡ
ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ² ΠΈΠ· Π²ΠΎΠ΄Π½ΡΡ
ΡΡΠ΅Π΄.ΠΠ±'ΡΠΊΡΠΎΠΌ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ Ρ ΠΏΡΠΈΡΠΎΠ΄Π½ΠΈΠΉ ΡΠ°ΡΡΠ²Π°ΡΠΈΠΉ ΡΠΈΠ»ΡΠΊΠ°Ρ β ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡ Π§Π΅ΡΠΊΠ°ΡΡΠΊΠΎΠ³ΠΎ ΡΠΎΠ΄ΠΎΠ²ΠΈΡΠ° (Π£ΠΊΡΠ°ΡΠ½Π°) ΡΠ· Π·Π°Π³Π°Π»ΡΠ½ΠΎΡ ΡΠΎΡΠΌΡΠ»ΠΎΡ (Ca,Na)(Π1,Mg,Fe)2(OH)2[(Si,Π1)4Π10]ΓnH2O. Π₯ΡΠΌΡΡΠ½ΠΈΠΉ ΡΠΊΠ»Π°Π΄ ΠΌΡΠ½Π΅ΡΠ°Π»Ρ: SiO2 β 51,9 %, Πl2O3 β 17,10 %, Fe2O3 β 7,92 %, MgO β 1,18 %, Na2O, K2O Ρ Π‘Π°Π Π΄ΠΎ 2 % Ρ Π2O β 8,78 %. ΠΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡΡ Π·Π½Π°ΡΠ½ΠΎΡ Π΄ΠΈΡΠΏΠ΅ΡΡΠ½ΡΡΡΡ ΡΠ°ΡΡΠΎΡΠΎΠΊ ΡΠ° Π½Π°ΡΠ²Π½ΡΡΡΡ Π²Π΅Π»ΠΈΠΊΠΎΡ ΠΊΡΠ»ΡΠΊΠΎΡΡΡ ΡΠΎΡΠ±ΡΡΠΉΠ½ΠΈΡ
ΡΠ΅Π½ΡΡΡΠ² Π½Π° ΠΉΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ, ΡΠΎ Π·Π΄Π°ΡΠ½Ρ Π΄ΠΎ ΠΊΠ°ΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΎΠ±ΠΌΡΠ½Ρ. ΠΠ΄Π½ΠΈΠΌ Π· Π½Π°ΠΉΠ±ΡΠ»ΡΡ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ½ΠΈΡ
ΠΌΡΡΡΡ Ρ ΡΠ΅, ΡΠΎ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡ ΠΏΡΠ°ΠΊΡΠΈΡΠ½ΠΎ Π½Π΅ Π·Π΄Π°ΡΠ΅Π½ Π΄ΠΎ Π²ΠΈΠ΄Π°Π»Π΅Π½Π½Ρ Π·Π°Π±ΡΡΠ΄Π½ΡΠ²Π°ΡΡΠ², ΡΠΎ ΠΏΡΠΈΡΡΡΠ½Ρ Ρ Π²ΠΎΠ΄Π°Ρ
Ρ Π²ΠΈΠ³Π»ΡΠ΄Ρ Π°Π½ΡΠΎΠ½ΡΠ². Π ΠΌΠ΅ΡΠΎΡ ΠΎΡΡΠΈΠΌΠ°Π½Π½Ρ ΡΠΎΡΠ±Π΅Π½ΡΡΠ², Π·Π΄Π°ΡΠ½ΠΈΡ
Π²ΠΈΠ»ΡΡΠ°ΡΠΈ Π°Π½ΡΠΎΠ½ΠΈ Π²Π°ΠΆΠΊΠΈΡ
ΠΌΠ΅ΡΠ°Π»ΡΠ², Π±ΡΠ»ΠΎ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΌΠΎΠ΄ΠΈΡΡΠΊΡΠ²Π°Π½Π½Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ ΠΊΠ°ΡΡΠΎΠ½Π½ΠΎΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΠΎΡ ΡΠ΅ΡΠΎΠ²ΠΈΠ½ΠΎΡ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΡΠΌΠ΅ΡΡΠ»Π°ΠΌΠΌΠΎΠ½ΡΠΉ Π±ΡΠΎΠΌΡΠ΄ΠΎΠΌ. Π Ρ
ΠΎΠ΄Ρ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ Π΄Π»Ρ Π²ΠΈΠ²ΡΠ΅Π½Π½Ρ ΡΡΡΡΠΊΡΡΡΠΈ Π²ΠΈΡ
ΡΠ΄Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ Ρ ΠΉΠΎΠ³ΠΎ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
ΡΠΎΡΠΌ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°Π»ΠΈΡΡ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ°Π·ΠΎΠ²ΠΈΠΉ Π°Π½Π°Π»ΡΠ·, ΡΠΊΠ°Π½ΡΡΡΠ° Π΅Π»Π΅ΠΊΡΡΠΎΠ½Π½Π° ΠΌΡΠΊΡΠΎΡΠΊΠΎΠΏΡΡ, ΡΠ½ΡΡΠ°ΡΠ΅ΡΠ²ΠΎΠ½Π° ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΡΡ, ΡΠ΅ΡΠΌΡΡΠ½ΠΈΠΉ Π°Π½Π°Π»ΡΠ·. ΠΠ»Ρ Π²ΠΈΠ²ΡΠ΅Π½Π½Ρ ΡΠΎΡΠ±ΡΡΠΉΠ½ΠΈΡ
Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡΠ² Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½ΠΎ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΊΠΎΠ»ΠΎΡΠΈΠΌΠ΅ΡΡΠΈΡΠ½ΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄.Π£ ΡΠΎΠ±ΠΎΡΡ ΠΏΡΠ΄ΡΠ²Π΅ΡΠ΄ΠΆΠ΅Π½ΠΎ, ΡΠΎ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΠΈ Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΡΠΌΠ΅ΡΡΠ»Π°ΠΌΠΌΠΎΠ½ΡΠΉ Π±ΡΠΎΠΌΡΠ΄Ρ ΡΠΎΡΠ±ΡΡΡΡΡΡ Π½Π΅ ΡΡΠ»ΡΠΊΠΈ Π½Π° Π·ΠΎΠ²Π½ΡΡΠ½ΡΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΡΠ°ΡΡΠΈΠ½ΠΎΠΊ, Π° ΠΉ ΠΌΡΠ³ΡΡΡΡΡ ΠΌΡΠΆ Π°Π»ΡΠΌΠΎΡΠΈΠ»ΡΠΊΠ°ΡΠ½ΠΈΠΌΠΈ ΠΏΠ°ΠΊΠ΅ΡΠ°ΠΌΠΈ ΡΠ°ΡΡΠ²Π°ΡΠΎΡ ΡΡΡΡΠΊΡΡΡΠΈ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ. Π‘ΠΎΡΠ±ΡΡΠΉΠ½Ρ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΠΏΡΠ΄ΡΠ²Π΅ΡΠ΄ΠΈΠ»ΠΈ, ΡΠΎ Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½Ρ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
ΡΠΎΡΠΌ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ Π΄ΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΠΏΡΠ΄Π²ΠΈΡΠΈΡΠΈ ΡΡΡΠΏΡΠ½Ρ Π²ΠΈΠ»ΡΡΠ΅Π½Π½Ρ ΡΠΎΠ½ΡΠ² Ρ
ΡΠΎΠΌΡ (VI) Π· 32Β % Π΄ΠΎ 96Β %. ΠΡΡΠΈΠΌΠ°Π½Ρ ΡΠΎΡΠ±Π΅Π½ΡΠΈ Π΄ΠΎΠ·Π²ΠΎΠ»ΡΡΡΡ ΠΎΡΠΈΡΡΠΈΡΠΈ Π·Π°Π±ΡΡΠ΄Π½Π΅Π½Ρ Π²ΠΎΠ΄Ρ Π· ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡΡ Ρ
ΡΠΎΠΌΡ (VI) ΡΡΠ²Π½ΡΠΉ 1 ΠΌΠ³/Π΄ΠΌ3 Π΄ΠΎ Π·Π½Π°ΡΠ΅Π½Ρ Π³ΡΠ°Π½ΠΈΡΠ½ΠΎ Π΄ΠΎΠΏΡΡΡΠΈΠΌΠΈΡ
ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΠΉ. Π¦Π΅ ΠΏΠΎΠ²'ΡΠ·Π°Π½ΠΎ Π· ΡΠΈΠΌ, ΡΠΎ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ΄ΠΈΡΡΠΊΡΠ²Π°Π½Π½Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ ΠΌΠ°Ρ ΡΡΠ΄ ΠΎΡΠΎΠ±Π»ΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΡΠ° Π΄ΠΎΠ·Π²ΠΎΠ»ΡΡ Π·ΠΌΡΠ½ΠΈΡΠΈ ΡΡΡΡΠΊΡΡΡΡ Π²ΠΈΡ
ΡΠ΄Π½ΠΎΠ³ΠΎ ΠΌΡΠ½Π΅ΡΠ°Π»Ρ, Π° ΡΠ°ΠΊΠΎΠΆ ΠΏΠ΅ΡΠ΅Π·Π°ΡΡΠ΄ΠΈΡΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ Π³Π»ΠΈΠ½ΠΈ Π²ΡΠ΄ Π½Π΅Π³Π°ΡΠΈΠ²Π½ΠΎΡ Π΄ΠΎ ΠΏΠΎΠ·ΠΈΡΠΈΠ²Π½ΠΎΡ. ΠΠ°Π²Π΄ΡΠΊΠΈ ΡΡΠΎΠΌΡ Π·Π°Π±Π΅Π·ΠΏΠ΅ΡΡΡΡΡΡΡ ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½Ρ ΠΎΡΠ³Π°Π½ΠΎΠ³Π»ΠΈΠ½ Π΄Π»Ρ Π²ΠΈΠ΄Π°Π»Π΅Π½Π½Ρ Π½Π΅ΠΎΡΠ³Π°Π½ΡΡΠ½ΠΈΡ
ΡΠΎΠΊΡΠΈΠΊΠ°Π½ΡΡΠ², ΡΠΎ Π·Π½Π°Ρ
ΠΎΠ΄ΡΡΡΡΡ Ρ Π°Π½ΡΠΎΠ½Π½ΠΈΡ
ΡΠΎΡΠΌΠ°Ρ
. Π£ ΠΏΠΎΡΡΠ²Π½ΡΠ½Π½Ρ Π· Π°Π½Π°Π»ΠΎΠ³ΡΡΠ½ΠΈΠΌΠΈ Π²ΡΠ΄ΠΎΠΌΠΈΠΌΠΈ, ΠΎΡΡΠΈΠΌΠ°Π½Ρ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈ Π·Π°Π±Π΅Π·ΠΏΠ΅ΡΡΡΡΡ Π²ΠΈΠ΄Π°Π»Π΅Π½Π½Ρ Π½Π°Π²ΡΡΡ ΡΠ»ΡΠ΄ΠΎΠ²ΠΈΡ
ΠΊΡΠ»ΡΠΊΠΎΡΡΠ΅ΠΉ Π°Π½ΡΠΎΠ½ΡΠ² Π²Π°ΠΆΠΊΠΈΡ
ΠΌΠ΅ΡΠ°Π»ΡΠ² Π· Π²ΠΎΠ΄Π½ΠΈΡ
ΡΠ΅ΡΠ΅Π΄ΠΎΠ²ΠΈΡ
ΠΠ΄Π΅ΡΠΆΠ°Π½Π½Ρ ΡΡΠ°Π±ΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΎΠ³ΠΎ Π½Π°Π½ΠΎΠ΄ΠΈΡΠΏΠ΅ΡΡΠ½ΠΎΠ³ΠΎ Π·Π°Π»ΡΠ·Π° Π½Π° ΠΎΡΠ½ΠΎΠ²Ρ ΠΎΡΠ³Π°Π½ΠΎΡΡΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ
The synthesis of zeroΒvalent nanoΒdimension iron on the surface of montmorillonite and organomontmollonite by reducing aqueous solutions of Fe2+ salts by sodium boronhydride was conducted. The results of RFA and IRΒspectroscopy indicate formation of a monolayer of SAS (HDTMA) both on the outer surface of the particles of montmorillonite and among structural packages of montmorillonite. In this case, organofilization of the surface contributes to the formation of more dispersed particles of zeroΒvalent iron.The physical and chemical features of the processes of sorption cleaning of contaminated waters from chromium(VI) compounds using the obtained nanodispersed material were explored. It was established that the sorption of ions Cr(VI) by the composite adsorbent based on zeroΒvalent iron and organomontmorillonite amounts to 120 mg/g of Fe, which significantly exceeds sorption for the original montmorillonite, organomontmorillonite, nanoΒdimension iron and the composite sorbent based on montmorilonite and nanoΒdimension iron.Based on the study of structural and rheological properties, it was established that with the content of iron in sorbent equal to 0,037Γ·0,146 %, the suspension remains resistant to aggregation and sedimentation. This, together with their rather high sorption characteristics, makes it appropriate to use aqueous dispersions of organomontmorillonite with the applied layer of the synthesized highly dispersed reactive material when cleaning ground waters from ions of heavy metals (chromium) using the latest environmental technologies based on pumping aqueous dispersionsΒ of nanomaterialΒ intoΒ contaminated layers of soil.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΡΠΈΠ·ΠΈΠΊΠΎ-Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΡΠΈΠ½ΡΠ΅Π·Π° Π½Π°Π½ΠΎΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡΠ° ΠΈ ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΠΈΡΠ° ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
Π½Π°Π½ΠΎΡΠΎΠ·ΠΌΡΡΠ½ΠΈΠΌ ΠΆΠ΅Π»Π΅Π·ΠΎΠΌ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ΅ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² Π΄ΠΈΡΠΏΠ΅ΡΡΠΈΠΉ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ². ΠΠΎΠΊΠ°Π·Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΈΡ
ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈ ΠΎΡΠΈΡΡΠΊΠ΅ ΠΏΠΎΠ΄Π·Π΅ΠΌΠ½ΡΡ
Π²ΠΎΠ΄ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΡ
ΠΏΡΠΈΡΠΎΠ΄ΠΎΠΎΡ
ΡΠ°Π½Π½ΡΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ ΡΡΠ·ΠΈΠΊΠΎ-Ρ
ΡΠΌΡΡΠ½Ρ ΠΎΡΠΎΠ±Π»ΠΈΠ²ΠΎΡΡΡ ΡΠΈΠ½ΡΠ΅Π·Ρ Π½Π°Π½ΠΎΠΌΠ°ΡΠ΅ΡΡΠ°Π»ΡΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Ρ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ ΡΠ° ΠΎΡΠ³Π°Π½ΠΎΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
Π½Π°Π½ΠΎΡΠΎΠ·ΠΌΡΡΠ½ΠΈΠΌ Π·Π°Π»ΡΠ·ΠΎΠΌ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΠ΅ΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΈΡ
Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ Π΄ΠΈΡΠΏΠ΅ΡΡΡΠΉ ΠΎΡΡΠΈΠΌΠ°Π½ΠΈΡ
ΠΌΠ°ΡΠ΅ΡΡΠ°Π»ΡΠ². ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ ΡΡ
Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½Ρ ΠΏΡΠΈ ΠΎΡΠΈΡΠ΅Π½Π½Ρ ΠΏΡΠ΄Π·Π΅ΠΌΠ½ΠΈΡ
Π²ΠΎΠ΄ ΡΠ· Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½ΡΠΌ ΡΡΡΠ°ΡΠ½ΠΈΡ
ΠΏΡΠΈΡΠΎΠ΄ΠΎΠΎΡ
ΠΎΡΠΎΠ½Π½ΠΈΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³Ρ
Obtaining stabilized nanodispersed iron based on organofilized montmorillonite
ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ ΡΡΠ·ΠΈΠΊΠΎ-Ρ
ΡΠΌΡΡΠ½Ρ ΠΎΡΠΎΠ±Π»ΠΈΠ²ΠΎΡΡΡ ΡΠΈΠ½ΡΠ΅Π·Ρ Π½Π°Π½ΠΎΠΌΠ°ΡΠ΅ΡΡΠ°Π»ΡΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Ρ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ ΡΠ° jΡΠ³Π°Π½ΠΎΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΡ
Π½Π°Π½ΠΎΡΠΎΠ·ΠΌΡΡΠ½ΠΈΠΌ Π·Π°Π»ΡΠ·ΠΎΠΌ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΠ΅ΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΈΡ
Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ Π΄ΠΈΡΠΏΠ΅ΡΡΡΠΉ ΠΎΡΡΠΈΠΌΠ°Π½ΠΈΡ
ΠΌΠ°ΡΠ΅ΡΡΠ°Π»ΡΠ². ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ ΡΡ
Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½Ρ ΠΏΡΠΈ ΠΎΡΠΈΡΠ΅Π½Π½Ρ ΠΏΡΠ΄Π·Π΅ΠΌΠ½ΠΈΡ
Π²ΠΎΠ΄ ΡΠ· Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½ΡΠΌ ΡΡΡΠ°ΡΠ½ΠΈΡ
ΠΏΡΠΈΡΠΎΠ΄ΠΎΠΎΡ
ΠΎΡΠΎΠ½Π½ΠΈΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΡΠΉ
ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ Π°Π΄ΡΠΎΡΠ±ΡΡΡ ΡΠΎΠ½ΡΠ² Ρ ΡΠΎΠΌΡ (VI) ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΠΎΠΌ, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΠΌ ΠΊΠ°ΡΡΠΎΠ½Π½ΠΈΠΌΠΈ ΠΏΠΎΠ²Π΅ΡΡ Π½Π΅Π²ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΠΈΠΌΠΈ ΡΠ΅ΡΠΎΠ²ΠΈΠ½Π°ΠΌΠΈ
Montmorillonite has high cation exchange capacity and can be used as a sorbent for the removal of metal cations. But anions adsorption on the surface of the mineral is limited.Targeted regulation of hydrophobic and hydrophilic surface properties using sorbents provides an opportunity to increase its absorption properties in relation to anions.The results show that the degree of Cr(VI) extraction by the sorbents obtained at montmorillonite modification increases with increase of CEC/S. Organoclays that modified at CEC/sΒ Β 1 showed higher adsorption capacity in relation to Cr(VI), but a part of HDTMA isnβt related to the mineral surface and involved in the removal of Cr(VI) from solution with precipitation in the form of alkyl ammonium chromate. HDTMA in free form is harmful to the environment, so CEC/S for these sorbents must not exceed 1.Adsorption of Cr(VI) compounds essentially depends on pH of a solution. The highest values are obtained at pH from 1 to 6. Adsorption properties of organoclays are decreased at pHΒ 6 to 8. Removal of Cr(VI) is not significant in the alkaline environment.These studies will form the basis for the study of structural and mechanical properties of organoclays to use their suspensions for removal of anions of heavy metals and radionuclides using the latest environmental technologies directly from the soil layers.ΠΠ·ΡΡΠ΅Π½Ρ ΡΡΡΡΠΊΡΡΡΠ½ΡΠ΅ ΠΈ Π°Π΄ΡΠΎΡΠ±ΡΠΈΠΎΠ½Π½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡΠ°, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΡΠΌ Π²Π΅ΡΠ΅ΡΡΠ²ΠΎΠΌ (Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΌΠΎΠ½ΠΈΠΉ Π±ΡΠΎΠΌΠΈΠ΄ΠΎΠΌ). ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΠΌΠΎΠ»ΡΡΠ½ΡΠ΅ ΡΠΎΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»Π»ΠΎΠ½ΠΈΡΠ° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΡΠΌ Π²Π΅ΡΠ΅ΡΡΠ²ΠΎΠΌ Ρ ΡΠ΅Π»ΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ Π΄Π°Π½Π½ΡΡ
ΡΠΎΡΠ±Π΅Π½ΡΠΎΠ². ΠΠΎΠ»ΡΡΠ΅Π½ ΡΠΎΡΠ±Π΅Π½Ρ ΡΠΎ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ Π±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΈΠΌΠΈ ΠΈΠΎΠ½ΠΎΠΎΠ±ΠΌΠ΅Π½Π½ΡΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ, ΡΠ΅ΠΌ ΠΈΡΡ
ΠΎΠ΄Π½ΡΠΉ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π». ΠΠ°Π½Π½ΡΠΉ ΡΠΎΡΠ±Π΅Π½Ρ ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ Π΄Π»Ρ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ Π‘r(VI) ΠΈΠ· Π²ΠΎΠ΄Π½ΡΡ
ΡΡΠ΅Π΄.ΠΠΈΠ²ΡΠ΅Π½ΠΎ ΡΡΡΡΠΊΡΡΡΠ½Ρ ΡΠ° Π°Π΄ΡΠΎΡΠ±ΡΡΠΉΠ½Ρ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΎΠ³ΠΎ ΠΊΠ°ΡΡΠΎΠ½Π½ΠΎΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΠΎΡ ΡΠ΅ΡΠΎΠ²ΠΈΠ½ΠΎΡ (Π³Π΅ΠΊΡΠ°Π΄Π΅ΡΠΈΠ»ΡΡΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΎΠ½ΡΠΉ Π±ΡΠΎΠΌΡΠ΄ΠΎΠΌ). ΠΠΈΠ·Π½Π°ΡΠ΅Π½ΠΎ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½Ρ ΠΌΠΎΠ»ΡΡΠ½Ρ ΡΠΏΡΠ²Π²ΡΠ΄Π½ΠΎΡΠ΅Π½Π½Ρ Π΄Π»Ρ ΠΌΠΎΠ΄ΠΈΡΡΠΊΡΠ²Π°Π½Π½Ρ ΠΌΠΎΠ½ΡΠΌΠΎΡΠΈΠ»ΠΎΠ½ΡΡΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Π΅Π²ΠΎ-Π°ΠΊΡΠΈΠ²Π½ΠΎΡ ΡΠ΅ΡΠΎΠ²ΠΈΠ½ΠΎΡ Π· ΠΌΠ΅ΡΠΎΡ ΠΎΡΡΠΈΠΌΠ°Π½Π½Ρ Π΄Π°Π½ΠΈΡ
ΡΠΎΡΠ±Π΅Π½ΡΡΠ². ΠΡΡΠΈΠΌΠ°Π½ΠΎ ΡΠΎΡΠ±Π΅Π½Ρ, ΡΠΎ ΠΌΠ°Ρ Π·Π½Π°ΡΠ½ΠΎ Π²ΠΈΡΡ ΡΠΎΠ½ΠΎΠΎΠ±ΠΌΡΠ½Π½Ρ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ Π½ΡΠΆ Π²ΠΈΡ
ΡΠ΄Π½ΠΈΠΉ ΠΌΠ°ΡΠ΅ΡΡΠ°Π», Ρ ΠΌΠΎΠΆΠ΅ Π±ΡΡΠΈ Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½ΠΈΠΉ Π΄Π»Ρ Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π²ΠΈΠ»ΡΡΠ΅Π½Π½Ρ ΡΠΏΠΎΠ»ΡΠΊ Π‘r(VI) Π· Π²ΠΎΠ΄Π½ΠΈΡ
ΡΠ΅ΡΠ΅Π΄ΠΎΠ²ΠΈΡ
Study of the Structure of Organo-modified Palygorskite
The object of research is a natural silicate with a layer-band structure - palygorskite of the Cherkasy deposit (Ukraine). One of the problematic areas in the technology of sorption purification of aqueous media using palygorskite is the absence of kinship of the mineral in anionic forms of pollution. Therefore, its use as a sorbent to extract ions Cr(VI), U(VI), As(V), which are in aqueous media in anionic forms, is ineffective.In the course of the study, XRD methods, thermal analysis and a spectrophotometric method are used to study the sorption properties of synthesized materials.The structures of palygorskite and modified samples are studied using -ray diffraction analysis (XRD). After treatment with Na-PG, changes in its crystal structure are observed. There is a shift of the peaks toward large angles 2ΞΈ. Comparison of the diffractograms OPG-1 and OPG-2 allows to conclude that the reflection with the same indices is not relatively displaced, but their intensity is different. In OPG-2, the intensity of most peaks is higher.The thermal properties of palygorskite and the resulting composites are studied. According to the results of sorption studies, it is established that palygorskite modified at a ratio of CEC/surfactant=1 can remove up to 97.8 % of Cr(VI) ions. This is 16.2 times more than adsorbing natural palygorskite.As a result of studies of the Cr(VI) adsorption on Na-PG, OPG-1 and OPG-2, it has been shown that modifying the palygorskite surface by GDTMA can increase the adsorption of Cr(VI) from 0.45 mg/g and 9.2 mg/g, respectively. And for the initial concentration of the solution is 100 mg/l to 4.2 and 12.3 mg/l, respectively.Increasing the volume of practical use of natural silicate materials contributes to a comprehensive solution of environmental issues, resource saving and technology for the production of sorbents for the extraction of anionic forms of Cr(VI) and U(VI) from aqueous solutions