База данных: Статьи
Страница 4, Результатов: 52
Отмеченные записи: 0
31.
Подробнее
35
K17
Kalmakhanova, M. S.
New adsorbents developed from netural clays to remove ni (II) from wastewater. [Текст] / M. S. Kalmakhanova, А. Amantaikyzy, J. L. Diaz de Tuesta, G. A. Seitbekova [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 45-52
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
clay -- adsorption -- nickel -- heavy metal -- wastewater -- pillared clay
Аннотация: This work deals with the development of materials based on natural clays and on pillared clays and further application in the the adsorption of Ni (II), used as model pollutant, from aqueous solution. The starting natural clay (montmorillonite) was obtained in a deposit of Kazakhstan (Asa), and two additional samples were prepared by treatment of the natural clay with acid and by pillarization with Fe2+and Zn2+.
Держатели документа:
WKU
Доп.точки доступа:
Amantaikyzy, А.
Diaz de Tuesta, J. L.
Seitbekova, G. A.
Darmenbaeva, A. S.
Reimbaeva, S.
K17
Kalmakhanova, M. S.
New adsorbents developed from netural clays to remove ni (II) from wastewater. [Текст] / M. S. Kalmakhanova, А. Amantaikyzy, J. L. Diaz de Tuesta, G. A. Seitbekova [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 45-52
Рубрики: chemical Technology
Кл.слова (ненормированные):
clay -- adsorption -- nickel -- heavy metal -- wastewater -- pillared clay
Аннотация: This work deals with the development of materials based on natural clays and on pillared clays and further application in the the adsorption of Ni (II), used as model pollutant, from aqueous solution. The starting natural clay (montmorillonite) was obtained in a deposit of Kazakhstan (Asa), and two additional samples were prepared by treatment of the natural clay with acid and by pillarization with Fe2+and Zn2+.
Держатели документа:
WKU
Доп.точки доступа:
Amantaikyzy, А.
Diaz de Tuesta, J. L.
Seitbekova, G. A.
Darmenbaeva, A. S.
Reimbaeva, S.
32.
Подробнее
35
Z63
Zhantassov, K.
Development of technology for extraction of lead and zinc oxides from dust and slags during the utilization of lead plant waste. [Текст] / K. Zhantassov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 81-85
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
waste -- lead waste -- oxic compounds -- lead and zinc compounds -- environmental pollution -- toxic waste processing -- waste disposal
Аннотация: The article proposes methods for the extraction of lead and zinc from slag waste and selects the optimal method for the selective extraction of zinc and lead oxides from dust and slags of lead production. The proposed technology of continuous carbon-free selective extraction of zinc and lead from the dust of electric steelmaking production allows the use of lead production slag, which is fed into a rotating drum furnace in two oppositely directed streams. During the movement of lead slag in the furnace drum and the burning of the torch, lead and zinc are more completely extracted from the dust-like material, where the transporting object is compressed air, and the purified flue gas after the gas is further purified by means of a smoke pump is released into the atmosphere.
Держатели документа:
WKU
Доп.точки доступа:
Bagova, Z.
Turebekova, G.
Sapargaliyeva, B.
Pusurmanova, G.
Z63
Zhantassov, K.
Development of technology for extraction of lead and zinc oxides from dust and slags during the utilization of lead plant waste. [Текст] / K. Zhantassov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 81-85
Рубрики: chemical Technology
Кл.слова (ненормированные):
waste -- lead waste -- oxic compounds -- lead and zinc compounds -- environmental pollution -- toxic waste processing -- waste disposal
Аннотация: The article proposes methods for the extraction of lead and zinc from slag waste and selects the optimal method for the selective extraction of zinc and lead oxides from dust and slags of lead production. The proposed technology of continuous carbon-free selective extraction of zinc and lead from the dust of electric steelmaking production allows the use of lead production slag, which is fed into a rotating drum furnace in two oppositely directed streams. During the movement of lead slag in the furnace drum and the burning of the torch, lead and zinc are more completely extracted from the dust-like material, where the transporting object is compressed air, and the purified flue gas after the gas is further purified by means of a smoke pump is released into the atmosphere.
Держатели документа:
WKU
Доп.точки доступа:
Bagova, Z.
Turebekova, G.
Sapargaliyeva, B.
Pusurmanova, G.
33.
Подробнее
38.3
S70
Sokolova, Ya. А.
The study of the properties and structure of cement binding composition on electrolyte acqueous solutions activated by mechanomagnetic method. [Текст] / Ya. А. Sokolova, M. V. Akulova, B. R. Isakulov, А. G. Sokolova [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 86-91
ББК 38.3
Рубрики: Строительные материалы
Кл.слова (ненормированные):
Cement compositions, -- mechanomagnetic activation -- electrolyte aqueous solutions -- differential thermo gravimetric analysis -- compressive strength -- structure formation of binders -- sodium thiosulphate -- calcium chloride
Аннотация: In the present paper, the issues of studying the influence of complex activation of grouting fluid on the structure and properties of the hardened cement paste and concrete are considered. The problem is relevant for manufacturing of building materials. In the paper, there was used the method of applying in the concrete mix composition of the elementary chemical substances undergone special physical treatment by means of mechanomagnetic activation. For more profound study of the structure formation processes in the hardened cement paste, the method of differential thermo gravimetric analysis has been used. As the research results have shown, the concrete samples on the activated electrolyte solutions are characterized by improved strength. In addition, on the base of differential thermo gravimetric analysis, it was proven that in the studied samples of the hardened cement paste on the electrolyte solutions activated by the method of mechanomagnetic treatment, the less calcium hydroxide and the more hydrated calcium silicate with amorphous and fine crystalline is formed. The obtained results for cement composites could be applied when manufacturing effective binder for concretes and mortars in the production of building materials and structures.
Держатели документа:
WKU
Доп.точки доступа:
Akulova, M.V.
Isakulov, B.R.
Sokolova, А.G.
Kul’sharov, B.B.
Isakulov, А.B.
S70
Sokolova, Ya. А.
The study of the properties and structure of cement binding composition on electrolyte acqueous solutions activated by mechanomagnetic method. [Текст] / Ya. А. Sokolova, M. V. Akulova, B. R. Isakulov, А. G. Sokolova [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 86-91
Рубрики: Строительные материалы
Кл.слова (ненормированные):
Cement compositions, -- mechanomagnetic activation -- electrolyte aqueous solutions -- differential thermo gravimetric analysis -- compressive strength -- structure formation of binders -- sodium thiosulphate -- calcium chloride
Аннотация: In the present paper, the issues of studying the influence of complex activation of grouting fluid on the structure and properties of the hardened cement paste and concrete are considered. The problem is relevant for manufacturing of building materials. In the paper, there was used the method of applying in the concrete mix composition of the elementary chemical substances undergone special physical treatment by means of mechanomagnetic activation. For more profound study of the structure formation processes in the hardened cement paste, the method of differential thermo gravimetric analysis has been used. As the research results have shown, the concrete samples on the activated electrolyte solutions are characterized by improved strength. In addition, on the base of differential thermo gravimetric analysis, it was proven that in the studied samples of the hardened cement paste on the electrolyte solutions activated by the method of mechanomagnetic treatment, the less calcium hydroxide and the more hydrated calcium silicate with amorphous and fine crystalline is formed. The obtained results for cement composites could be applied when manufacturing effective binder for concretes and mortars in the production of building materials and structures.
Держатели документа:
WKU
Доп.точки доступа:
Akulova, M.V.
Isakulov, B.R.
Sokolova, А.G.
Kul’sharov, B.B.
Isakulov, А.B.
34.
Подробнее
26.3
S14
Safarov, R. Z.
Elemental analysis of local and foreign raw materials for the production of trimanganese tetraoxide pigment. [Текст] / R. Z. Safarov, A. Zhandildenova, D. B. Kargin, B. B. Makhmutov [и др.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 92-98
ББК 26.3
Рубрики: geology
Кл.слова (ненормированные):
hausmannite -- pigment -- manganese ore -- nanopowders -- electronic microscopy -- energy-dispersive analysis
Аннотация: In the course of continuation of scientific research in the development of Kazakhstani technology for the production of trimanganese tetraoxide pigment, there have been proposed new methods of analysis which make it possible to investigate new nanostructural materials sourced from local deposits. The results obtained are of practical importance and serve as the foundation for developing new technologically advanced domestic production of a competitive product that is in demand both on the national and international markets. The available methods are not able to highlight the particularity and diversity of Kazakhstani manganese ores due to the uneven distribution of manganese minerals and host (waste) rock, the quantitative ratio of rock-forming components and their variation instability. Methods of energy-dispersive analysis of manganese ores from Kazakhstani Zhaksylyk and Bogach deposits have been put forward, electronic micrographs, spectrograms of samples, diagrams of normalized distribution of elements on the surface of samples have been obtained and a comparative analysis with raw analogue samples of some foreign manufacturers has been performed.
Держатели документа:
WKU
Доп.точки доступа:
Zhandildenova, A.
Kargin, D. B.
Makhmutov, B. B.
Kamatov, R. M.
Shomanova, Zh. K.
S14
Safarov, R. Z.
Elemental analysis of local and foreign raw materials for the production of trimanganese tetraoxide pigment. [Текст] / R. Z. Safarov, A. Zhandildenova, D. B. Kargin, B. B. Makhmutov [и др.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 92-98
Рубрики: geology
Кл.слова (ненормированные):
hausmannite -- pigment -- manganese ore -- nanopowders -- electronic microscopy -- energy-dispersive analysis
Аннотация: In the course of continuation of scientific research in the development of Kazakhstani technology for the production of trimanganese tetraoxide pigment, there have been proposed new methods of analysis which make it possible to investigate new nanostructural materials sourced from local deposits. The results obtained are of practical importance and serve as the foundation for developing new technologically advanced domestic production of a competitive product that is in demand both on the national and international markets. The available methods are not able to highlight the particularity and diversity of Kazakhstani manganese ores due to the uneven distribution of manganese minerals and host (waste) rock, the quantitative ratio of rock-forming components and their variation instability. Methods of energy-dispersive analysis of manganese ores from Kazakhstani Zhaksylyk and Bogach deposits have been put forward, electronic micrographs, spectrograms of samples, diagrams of normalized distribution of elements on the surface of samples have been obtained and a comparative analysis with raw analogue samples of some foreign manufacturers has been performed.
Держатели документа:
WKU
Доп.точки доступа:
Zhandildenova, A.
Kargin, D. B.
Makhmutov, B. B.
Kamatov, R. M.
Shomanova, Zh. K.
35.
Подробнее
24
I-54
Ilyassov, A. E.
Investigation of the sorption characteristics of activated carbons. [Текст] / A. E. Ilyassov, A.О. Baikonurova, B. N. Surimbayev // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 105-109
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
activated carbon -- sorption -- sorption capacity of coal -- sorbent -- gold
Аннотация: The article presents the results of a comparison of the sorption characteristics for gold of crushed activated carbon of the foreign Haycarb brand, obtained from expensive raw materials - coconut shells, and crushed activated carbon of the domestic Shubarkol brand, obtained from relatively cheap raw materials - low-ash coking coal. The activated carbon Shubarkol crushed to a class of -3.6+1.0 mm, was produced in Kazakhstan from coking coal by Shubarkolkomir JSC.
Держатели документа:
WKU
Доп.точки доступа:
Baikonurova, A.О.
Surimbayev, B.N.
I-54
Ilyassov, A. E.
Investigation of the sorption characteristics of activated carbons. [Текст] / A. E. Ilyassov, A.О. Baikonurova, B. N. Surimbayev // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 105-109
Рубрики: chemistry
Кл.слова (ненормированные):
activated carbon -- sorption -- sorption capacity of coal -- sorbent -- gold
Аннотация: The article presents the results of a comparison of the sorption characteristics for gold of crushed activated carbon of the foreign Haycarb brand, obtained from expensive raw materials - coconut shells, and crushed activated carbon of the domestic Shubarkol brand, obtained from relatively cheap raw materials - low-ash coking coal. The activated carbon Shubarkol crushed to a class of -3.6+1.0 mm, was produced in Kazakhstan from coking coal by Shubarkolkomir JSC.
Держатели документа:
WKU
Доп.точки доступа:
Baikonurova, A.О.
Surimbayev, B.N.
36.
Подробнее
26.31
A28
Aimbetova, I.O.
Mineral and petrographic analysis of clay raw materials of the turkestan region used as additives to thermal insulation materials. [Текст] / I.O. Aimbetova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 110-119
ББК 26.31
Рубрики: Минералогия
Кл.слова (ненормированные):
industrial production -- natural raw materials -- recycling industrial waste -- analysis -- thermal insulation materials
Аннотация: The article discusses the contributes to the development of a new focus on the use of various mixtures of natural raw materials and waste in the construction materials industry as a strategically important direction for solving the environmental burden and recycling industrial waste with a feasibility study that improves the state of the environment.
Держатели документа:
WKU
Доп.точки доступа:
Kurbaniyazov, S.
A28
Aimbetova, I.O.
Mineral and petrographic analysis of clay raw materials of the turkestan region used as additives to thermal insulation materials. [Текст] / I.O. Aimbetova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 110-119
Рубрики: Минералогия
Кл.слова (ненормированные):
industrial production -- natural raw materials -- recycling industrial waste -- analysis -- thermal insulation materials
Аннотация: The article discusses the contributes to the development of a new focus on the use of various mixtures of natural raw materials and waste in the construction materials industry as a strategically important direction for solving the environmental burden and recycling industrial waste with a feasibility study that improves the state of the environment.
Держатели документа:
WKU
Доп.точки доступа:
Kurbaniyazov, S.
37.
Подробнее
36
A53
Anarbekova, Z. А.
The influence of yeast races on the aroma-forming substances of table wines. [Текст] / Z. А. Anarbekova, G. I. Baigazieva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 12-18
ББК 36
Рубрики: Пищевое производство
Кл.слова (ненормированные):
Wine yeast -- fermentation -- enzyme activity -- ermentation dynamics -- organic acids -- aroma-forming substances.
Аннотация: This article shows the influence of the yeast race on the fermentation dynamics of white grape must, the composition of organic acids and aroma-forming components. The races that ensure the production of high-quality wine materials are identified.
Держатели документа:
WKU
Доп.точки доступа:
Baigazieva, G.I.
A53
Anarbekova, Z. А.
The influence of yeast races on the aroma-forming substances of table wines. [Текст] / Z. А. Anarbekova, G. I. Baigazieva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 12-18
Рубрики: Пищевое производство
Кл.слова (ненормированные):
Wine yeast -- fermentation -- enzyme activity -- ermentation dynamics -- organic acids -- aroma-forming substances.
Аннотация: This article shows the influence of the yeast race on the fermentation dynamics of white grape must, the composition of organic acids and aroma-forming components. The races that ensure the production of high-quality wine materials are identified.
Держатели документа:
WKU
Доп.точки доступа:
Baigazieva, G.I.
38.
Подробнее
24
M23
Mamyrbekova, А.
Study of kinetics of copper oxidation by electrolysis under non-stationary conditions. [Текст] / А. Mamyrbekova, А. Mamyrbekova, M. К. Kassymova, A. Zh. Aitbayeva, O. N. Chechina // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 54-59
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
copper electro-oxidation -- copper (I) oxide -- copper (II) oxide -- unsteady electrolysis -- electrolyte -- polarisation curves
Аннотация: The nature of the anion electrolyte affects the rate of copper anodic oxidation, while the process occurs more efficiently in solutions of sulfate and sodium chloride and is accompanied by significant polarisation. Based on the study of kinetics the possibility of obtaining powders of metal oxide was shown, which further allowed to determine the parameters of the electrolysis process in non-stationary conditions in order to obtain highly dispersed materials based on copper oxides with specific physico-chemical properties.
Держатели документа:
WKU
Доп.точки доступа:
Mamyrbekova, А.
Kassymova, M.К.
Aitbayeva, A.Zh.
Chechina, O.N.
M23
Mamyrbekova, А.
Study of kinetics of copper oxidation by electrolysis under non-stationary conditions. [Текст] / А. Mamyrbekova, А. Mamyrbekova, M. К. Kassymova, A. Zh. Aitbayeva, O. N. Chechina // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 54-59
Рубрики: chemistry
Кл.слова (ненормированные):
copper electro-oxidation -- copper (I) oxide -- copper (II) oxide -- unsteady electrolysis -- electrolyte -- polarisation curves
Аннотация: The nature of the anion electrolyte affects the rate of copper anodic oxidation, while the process occurs more efficiently in solutions of sulfate and sodium chloride and is accompanied by significant polarisation. Based on the study of kinetics the possibility of obtaining powders of metal oxide was shown, which further allowed to determine the parameters of the electrolysis process in non-stationary conditions in order to obtain highly dispersed materials based on copper oxides with specific physico-chemical properties.
Держатели документа:
WKU
Доп.точки доступа:
Mamyrbekova, А.
Kassymova, M.К.
Aitbayeva, A.Zh.
Chechina, O.N.
39.
Подробнее
35
T99
Tyan, A.
Selection of the washing mode in the preparation of beer wort by using the wheat malt. [Текст] / A. Tyan, M. M. Bayazitova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 94-98
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
barley -- wheat -- malt -- beer -- fermentation industry -- beer wort concentrate -- extractivity -- color -- mashing -- hydromodule
Аннотация: It should be noted that unmalted wheat is rarely used in brewing. This is because that the use of this cereal as unmalted material leads to significant deviations in the technological process, in particular, the filtration of wort and beer slows down, reduces the colloidal stability of the final product. At the same time, as a raw material for malt, wheat has some advantages over barley. The article deals with the effect of different amounts of wheat malt on the mashing process, the percentage of mashing and mashing modes of barley and wheat malt are selected experimentally.
Держатели документа:
WKU
Доп.точки доступа:
Bayazitova, M.M.
T99
Tyan, A.
Selection of the washing mode in the preparation of beer wort by using the wheat malt. [Текст] / A. Tyan, M. M. Bayazitova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 94-98
Рубрики: chemical Technology
Кл.слова (ненормированные):
barley -- wheat -- malt -- beer -- fermentation industry -- beer wort concentrate -- extractivity -- color -- mashing -- hydromodule
Аннотация: It should be noted that unmalted wheat is rarely used in brewing. This is because that the use of this cereal as unmalted material leads to significant deviations in the technological process, in particular, the filtration of wort and beer slows down, reduces the colloidal stability of the final product. At the same time, as a raw material for malt, wheat has some advantages over barley. The article deals with the effect of different amounts of wheat malt on the mashing process, the percentage of mashing and mashing modes of barley and wheat malt are selected experimentally.
Держатели документа:
WKU
Доп.точки доступа:
Bayazitova, M.M.
40.
Подробнее
35
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
Страница 4, Результатов: 52