The paper presents studies of various solid stabilizers of emulsions based on inorganic materials. Inorganic colloidal particles have an advantage for obtaining of stable emulsions due to their safety for use in food, cosmetics, pharmaceutical industry and medicine. Pickering emulsions have a higher biodegradability compared to classical emulsions stabilized with surfactants. An overview of inorganic substances such as silicon dioxide, clay materials, metal and metal oxide nanoparticles, calcium compounds and carbon particles used for stabilizing of Pickering emulsions is considered. A variety of solid inorganic particles as well as modification of their surfaces by surfactants allows to obtain the stable Pickering emulsions of different types for a wide range of applications. It should be noted that despite a large number of studies, this class of disperse systems is still not studied fully; various methods of their preparation and influence of solid particle size on stability and size of emulsions droplets are shown.
{"title":"Pickering emulsions stabilized by some inorganic materials","authors":"A. Adilbekova, Ayaulym Yertayeva","doi":"10.15328/cb1135","DOIUrl":"https://doi.org/10.15328/cb1135","url":null,"abstract":"The paper presents studies of various solid stabilizers of emulsions based on inorganic materials. Inorganic colloidal particles have an advantage for obtaining of stable emulsions due to their safety for use in food, cosmetics, pharmaceutical industry and medicine. Pickering emulsions have a higher biodegradability compared to classical emulsions stabilized with surfactants. An overview of inorganic substances such as silicon dioxide, clay materials, metal and metal oxide nanoparticles, calcium compounds and carbon particles used for stabilizing of Pickering emulsions is considered. A variety of solid inorganic particles as well as modification of their surfaces by surfactants allows to obtain the stable Pickering emulsions of different types for a wide range of applications. It should be noted that despite a large number of studies, this class of disperse systems is still not studied fully; various methods of their preparation and influence of solid particle size on stability and size of emulsions droplets are shown.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46255510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this work, the synthesis of carbon nanotubes was carried out on the sand surface with hydrophobic properties by chemical vapor deposition (CVD). The effective temperature for the synthesis of carbon nanotubes is 800 °C. Propane-butane gas mixture was used as a source of gaseous carbon. Argon gas (Ar) was used as an inert carrier gas. Nickel nitrate (Ni(NO3)2) was chosen as a catalyst for producing carbon nanotubes. Despite all the special properties of carbon nanomaterials, one of the problems with its use is its tendency to agglomerate and inert to the matrix of various substances. In order to solve this problem, the chemical functionalization of the surface layer of multiwall carbon nanotubes was carried out. To introduce carboxyl groups into the surface layer of carbon nanotubes, its surface was treated with a concentrated mixture of acids H2SO4/HNO3. It has been established that the main part of the functional groups in the surface layer of nanotubes are carboxyl, carbonyl and hydroxyl groups. Carbon nanotubes synthesized on the surface of hydrophobic sand were analyzed by the following research methods: scanning electron microscope, optical microscope, elemental analysis, Raman spectroscopy and a qualitative assessment of functionalized nanotubes using IR spectroscopy.
{"title":"Production of carbon nanotubes and their functionalization","authors":"M. Nazhipkyzy, Nazgul Kuantai","doi":"10.15328/cb1147","DOIUrl":"https://doi.org/10.15328/cb1147","url":null,"abstract":"In this work, the synthesis of carbon nanotubes was carried out on the sand surface with hydrophobic properties by chemical vapor deposition (CVD). The effective temperature for the synthesis of carbon nanotubes is 800 °C. Propane-butane gas mixture was used as a source of gaseous carbon. Argon gas (Ar) was used as an inert carrier gas. Nickel nitrate (Ni(NO3)2) was chosen as a catalyst for producing carbon nanotubes. Despite all the special properties of carbon nanomaterials, one of the problems with its use is its tendency to agglomerate and inert to the matrix of various substances. In order to solve this problem, the chemical functionalization of the surface layer of multiwall carbon nanotubes was carried out. To introduce carboxyl groups into the surface layer of carbon nanotubes, its surface was treated with a concentrated mixture of acids H2SO4/HNO3. It has been established that the main part of the functional groups in the surface layer of nanotubes are carboxyl, carbonyl and hydroxyl groups. Carbon nanotubes synthesized on the surface of hydrophobic sand were analyzed by the following research methods: scanning electron microscope, optical microscope, elemental analysis, Raman spectroscopy and a qualitative assessment of functionalized nanotubes using IR spectroscopy.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49511269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the production of chromium and in the process of transportation of chromiumcontaining materials, contamination of natural waters and soils with chromium compounds inevitably occurs. In this paper, the sorption of chromium (VI) ions with carbon sorbents is studied as a method for treating waste and natural water contaminated with chromiumcontaining compounds. Sorption method of extraction and concentration of elements is one of the most effective and simple technological method of chromium extraction. For extraction of chromium (VI), carbon sorbents obtained from recycling of wheat grains waste (RWGW) (wheat husk or bran) modified with ammonium nitrate were used. RWGW (recycling of wheat grains waste) + NH4NO3 (3%), RWGW (recycling of wheat grains waste) + NH4NO3 (5%), RWGW (recycling of wheat grains waste) + NH4NO3 (7%) were used. Chromium sorption was investigated depending on various factors. It has been established that the most effective sorbent is RWGW (recycling of wheat grains waste) + NH4NO3 (3%), with which it is possible to extract chromium by 98% from solutions at pH=1 in 30 min. This sorbent has been tested for industrial wastewater treatment containing up to 36 mg/L of chromium (VI) ions. The metal recovery rate was 95.2%. The obtained results indicate the prospects of application of RWGW (recycling of wheat grains waste) + NH4NO3 (3%) for wastewater treatment from chromium (VI).
{"title":"Treatment of waste water containing chromium (VI)","authors":"Kundyz S. Sovetova, A. Ismailova","doi":"10.15328/cb1113","DOIUrl":"https://doi.org/10.15328/cb1113","url":null,"abstract":"In the production of chromium and in the process of transportation of chromiumcontaining materials, contamination of natural waters and soils with chromium compounds inevitably occurs. In this paper, the sorption of chromium (VI) ions with carbon sorbents is studied as a method for treating waste and natural water contaminated with chromiumcontaining compounds. Sorption method of extraction and concentration of elements is one of the most effective and simple technological method of chromium extraction. For extraction of chromium (VI), carbon sorbents obtained from recycling of wheat grains waste (RWGW) (wheat husk or bran) modified with ammonium nitrate were used. RWGW (recycling of wheat grains waste) + NH4NO3 (3%), RWGW (recycling of wheat grains waste) + NH4NO3 (5%), RWGW (recycling of wheat grains waste) + NH4NO3 (7%) were used. Chromium sorption was investigated depending on various factors. It has been established that the most effective sorbent is RWGW (recycling of wheat grains waste) + NH4NO3 (3%), with which it is possible to extract chromium by 98% from solutions at pH=1 in 30 min. This sorbent has been tested for industrial wastewater treatment containing up to 36 mg/L of chromium (VI) ions. The metal recovery rate was 95.2%. The obtained results indicate the prospects of application of RWGW (recycling of wheat grains waste) + NH4NO3 (3%) for wastewater treatment from chromium (VI).","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49350963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Bakhadur, N. Aluker, G. Bekseitov, Yerbolat B. Ospanov, B. Uralbekov
1Казахский национальный университет имени аль-Фараби, Алматы, Казахстан 2Кемеровский государственный университет, Кемерово, Россия *E-mail: askar.bakhadur@gmail.com В настоящей работе возраст археологических керамических изделий определяется термолюминесцентным (ТЛ) методом после рентгенофазового анализа (РФА) образцов керамики, подтверждающего, что основой составной фазой изделий является кварц. Это позволило использовать методику пробоподготовки без выделения мономинеральной фазы кварца из керамического образца. Для определения мощности годовой поглощенной радиационной дозы в месте раскопки были применены почвоэквивалентные термолюминесцентные детекторы на основе оксида кремния. Среднее значение мощности дозы составило 0,62±0,02 сГр/год. Расчет возрастов керамики проводился после проверки линейности накопления светосумм для образцов в дозовом диапазоне до 2000 сГр. На основании комплекса проведенных исследований получены датировки керамических изделий, не противоречащие археологическим представлениям о возрасте этих изделий. Предлагается использовать методику определения возраста керамических образцов термолюминесцентным методом после определения их фазово-минерального состава методом РФА. В случае если преобладающей минеральной составной фазой является кварц (доля кварца составляла более 60% от общего состава керамики), анализ можно проводить без выделения фракции кварца, в случае наличия соизмеримых с кварцем фракции глинистых минералов предлагается проводить выделение кварца.
{"title":"Thermoluminescent and X-ray diffraction methods in dating of ceramics from archaeological excavations of the Orikti monument (Almaty region)","authors":"A. Bakhadur, N. Aluker, G. Bekseitov, Yerbolat B. Ospanov, B. Uralbekov","doi":"10.15328/cb1143","DOIUrl":"https://doi.org/10.15328/cb1143","url":null,"abstract":"1Казахский национальный университет имени аль-Фараби, Алматы, Казахстан 2Кемеровский государственный университет, Кемерово, Россия *E-mail: askar.bakhadur@gmail.com В настоящей работе возраст археологических керамических изделий определяется термолюминесцентным (ТЛ) методом после рентгенофазового анализа (РФА) образцов керамики, подтверждающего, что основой составной фазой изделий является кварц. Это позволило использовать методику пробоподготовки без выделения мономинеральной фазы кварца из керамического образца. Для определения мощности годовой поглощенной радиационной дозы в месте раскопки были применены почвоэквивалентные термолюминесцентные детекторы на основе оксида кремния. Среднее значение мощности дозы составило 0,62±0,02 сГр/год. Расчет возрастов керамики проводился после проверки линейности накопления светосумм для образцов в дозовом диапазоне до 2000 сГр. На основании комплекса проведенных исследований получены датировки керамических изделий, не противоречащие археологическим представлениям о возрасте этих изделий. Предлагается использовать методику определения возраста керамических образцов термолюминесцентным методом после определения их фазово-минерального состава методом РФА. В случае если преобладающей минеральной составной фазой является кварц (доля кварца составляла более 60% от общего состава керамики), анализ можно проводить без выделения фракции кварца, в случае наличия соизмеримых с кварцем фракции глинистых минералов предлагается проводить выделение кварца.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46202566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
One of the renewable sources of plant material is the plants of the Onagraceae L. family, growing on the territory of the Republic of Kazakhstan. The plant Circaea lutetiana L., (bipartite of Paris) of the genus Circaea L., (bipartite) of the family Onagraceae L., (fireweed), which belongs to medicinal, dyeing and food plants, was taken as an object of study. The presence of polyphenolic compounds was detected by paper chromatography in an ascending manner in solvent systems: butanol-acetic acid-water (BAW) (41:5), (40:12.5:29), 2%, 15% acetic acid with specific developers: diazotized sulfanilic acid (DZSA), diazotized para-nitroaniline (DZPNA), ammonia vapors, aluminum chloride (AlCl3), ferric chloride (FeCl3), ammonium-iron alum (AIA), vanillin reagent in sulfuric acid. The content of gallic and ferulic acids was determined in the roots and fruits of the plant, and ellagic acid in the leaves and fruits. Flavonoids and tannins of the hydrolyzable type were found in all plant organs, the largest number of them in fruits and the smallest in roots. Using the method of spectrophotometry in all plant organs, the content of flavonoids in terms of State standard sample (SSS) quercetin was determined (roots 0.96%, stems 2.03%, leaves 2.74%, fruits 3.67%), the content of tannins in terms of tannin (roots 0.005%, stems 1.19%, leaves 3.69%, fruits 5.99%).
{"title":"Research of polyphenolic compounds of Circaea lutetiana l.","authors":"Akmaral Kozhantayeva, S. Rakhmadiyeva","doi":"10.15328/cb1151","DOIUrl":"https://doi.org/10.15328/cb1151","url":null,"abstract":"One of the renewable sources of plant material is the plants of the Onagraceae L. family, growing on the territory of the Republic of Kazakhstan. The plant Circaea lutetiana L., (bipartite of Paris) of the genus Circaea L., (bipartite) of the family Onagraceae L., (fireweed), which belongs to medicinal, dyeing and food plants, was taken as an object of study. The presence of polyphenolic compounds was detected by paper chromatography in an ascending manner in solvent systems: butanol-acetic acid-water (BAW) (41:5), (40:12.5:29), 2%, 15% acetic acid with specific developers: diazotized sulfanilic acid (DZSA), diazotized para-nitroaniline (DZPNA), ammonia vapors, aluminum chloride (AlCl3), ferric chloride (FeCl3), ammonium-iron alum (AIA), vanillin reagent in sulfuric acid. The content of gallic and ferulic acids was determined in the roots and fruits of the plant, and ellagic acid in the leaves and fruits. Flavonoids and tannins of the hydrolyzable type were found in all plant organs, the largest number of them in fruits and the smallest in roots. Using the method of spectrophotometry in all plant organs, the content of flavonoids in terms of State standard sample (SSS) quercetin was determined (roots 0.96%, stems 2.03%, leaves 2.74%, fruits 3.67%), the content of tannins in terms of tannin (roots 0.005%, stems 1.19%, leaves 3.69%, fruits 5.99%).","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44233726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elvira Shatabayeva, G. Mun, Yerengaip Shaikhutdinov, V. Khutoryanskiy
Gelatin is a proteinaceous substance composed of all the essential amino acids (except tryptophan) and derived from collagen using a hydrolysis technique. Hydrogels and modified composites based on gelatin are widely used in the food industry, biomedicine, pharmaceutical industry and food packaging materials due to their biocompatibility, biodegradability, nonimmunogenicity and ability to stimulate cell adhesion and proliferation. Gelatin can absorb 5-10 times its weight of water and is the main ingredient of hard and soft capsules in pharmaceutical industry. It melts above 30°C and easily releases biologically active compounds, nutrients and drugs in human gastrointestinal tract. In addition, gelatin contains arginine-glycine-asparagine RGD-sequences in the polymer structure and contributes to various functions such as antioxidant, anti-hypertensive, anti-microbial, tissue regeneration, wound healing, enhances bone formation and anti-cancer therapy. This article reports a brief overview of gelatin sources, gelatin preparation processes and its physico-chemical properties, as well as advances in the preparation of gelatin-based composite materials and hydrogels for tissue engineering, drug delivery, wound dressings, active packaging using various cross-linking techniques.
{"title":"Gelatin: sources, preparation and application in food and biomedicine","authors":"Elvira Shatabayeva, G. Mun, Yerengaip Shaikhutdinov, V. Khutoryanskiy","doi":"10.15328/cb1112","DOIUrl":"https://doi.org/10.15328/cb1112","url":null,"abstract":"Gelatin is a proteinaceous substance composed of all the essential amino acids (except tryptophan) and derived from collagen using a hydrolysis technique. Hydrogels and modified composites based on gelatin are widely used in the food industry, biomedicine, pharmaceutical industry and food packaging materials due to their biocompatibility, biodegradability, nonimmunogenicity and ability to stimulate cell adhesion and proliferation. Gelatin can absorb 5-10 times its weight of water and is the main ingredient of hard and soft capsules in pharmaceutical industry. It melts above 30°C and easily releases biologically active compounds, nutrients and drugs in human gastrointestinal tract. In addition, gelatin contains arginine-glycine-asparagine RGD-sequences in the polymer structure and contributes to various functions such as antioxidant, anti-hypertensive, anti-microbial, tissue regeneration, wound healing, enhances bone formation and anti-cancer therapy. This article reports a brief overview of gelatin sources, gelatin preparation processes and its physico-chemical properties, as well as advances in the preparation of gelatin-based composite materials and hydrogels for tissue engineering, drug delivery, wound dressings, active packaging using various cross-linking techniques.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67385149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Guzel Аbilova, D. Makhayeva, G. Irmukhametova, V. Khutoryanskiy
Chitosan is a natural biopolymer, polysaccharide, a product of chitin deacetylation. Chitosan is a non-toxic, biocompatible and biodegradable polymer with high biological activity and stability in the environment. In addition, chitosan is obtained from natural renewable resources and is an inexpensive substance. Due to all these properties, chitosan is widely used in practical medicine, for example, in the form of hydrogel dosage forms in combination with natural and synthetic polymers. This review is focused on polymer hydrogel materials based on chitosan. Special attention is paid to the preparation and use of wound dressings for the treatment of wounds of various etiologies. The use of hydrogel wound dressings based on this polysaccharide allows to create a protective shell on the surface of various wounds, to prolong delivery of antibacterial agents, peptides and other active substances, which significantly increases the effectiveness of therapy. Bactericidal and sorption properties of chitosan-based hydrogels established in experimental and clinical studies are discussed.
{"title":"Chitosan based hydrogels and their use in medicine","authors":"Guzel Аbilova, D. Makhayeva, G. Irmukhametova, V. Khutoryanskiy","doi":"10.15328/cb1100","DOIUrl":"https://doi.org/10.15328/cb1100","url":null,"abstract":"Chitosan is a natural biopolymer, polysaccharide, a product of chitin deacetylation. Chitosan is a non-toxic, biocompatible and biodegradable polymer with high biological activity and stability in the environment. In addition, chitosan is obtained from natural renewable resources and is an inexpensive substance. Due to all these properties, chitosan is widely used in practical medicine, for example, in the form of hydrogel dosage forms in combination with natural and synthetic polymers.\u0000\u0000This review is focused on polymer hydrogel materials based on chitosan. Special attention is paid to the preparation and use of wound dressings for the treatment of wounds of various etiologies. The use of hydrogel wound dressings based on this polysaccharide allows to create a protective shell on the surface of various wounds, to prolong delivery of antibacterial agents, peptides and other active substances, which significantly increases the effectiveness of therapy. Bactericidal and sorption properties of chitosan-based hydrogels established in experimental and clinical studies are discussed.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67385293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zh. K. Orazov, A. Bolatov, N. Kononova, V. Shevchenko, K. Kokh, B. Uralbekov, A. Kuznetsov, A. Kokh
A new luminescent material based on complex borate NaBaY(BO3)2 doped with Tb3+ and Eu3+ ions was obtained by high-temperature solid-state synthesis. Using X-ray diffraction analysis it was shown that NaBaY(BO3)2:0.07Tb3+:0.1Eu3+ crystallizes in trigonal system with the space group R-3m and isotypic with the mineral buetschliit K2Ca(CO3)2. The crystal structure of the phosphor is layered, formed from [BO3] triangles, [YO6] octahedra, [BaO9] and [NaO9] polyhedra. The calculated unit cell parameters for NaBaY(BO3)2:0.07Tb3+:0.1Eu3+ are: a=5.3510(6) Å, c=17.9338(3) Å, V=444.71(2) Å3. The luminescent properties of NaBaY(BO3)2:0.07Tb3+:0.1Eu3+ were studied.
{"title":"Obtaining of luminescent material based on NaBaY(BO3)2 doped with terbium and europium ions","authors":"Zh. K. Orazov, A. Bolatov, N. Kononova, V. Shevchenko, K. Kokh, B. Uralbekov, A. Kuznetsov, A. Kokh","doi":"10.15328/cb1122","DOIUrl":"https://doi.org/10.15328/cb1122","url":null,"abstract":"A new luminescent material based on complex borate NaBaY(BO3)2 doped with Tb3+ and Eu3+ ions was obtained by high-temperature solid-state synthesis. Using X-ray diffraction analysis it was shown that NaBaY(BO3)2:0.07Tb3+:0.1Eu3+ crystallizes in trigonal system with the space group R-3m and isotypic with the mineral buetschliit K2Ca(CO3)2. The crystal structure of the phosphor is layered, formed from [BO3] triangles, [YO6] octahedra, [BaO9] and [NaO9] polyhedra. The calculated unit cell parameters for NaBaY(BO3)2:0.07Tb3+:0.1Eu3+ are: a=5.3510(6) Å, c=17.9338(3) Å, V=444.71(2) Å3. The luminescent properties of NaBaY(BO3)2:0.07Tb3+:0.1Eu3+ were studied.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67385173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Al-Farabi Kazakh National University, Almaty, Kazakhstan *E-mail: yenglikabzhan@gmail.com Molybdenum is one of the most important uranium-related metals. In the ores of many deposits, the molybdenum content is comparable to the uranium content. The processing of complex uranium-molybdenum ores is based on the methods of acid and soda autoclave leaching, in which uranium and molybdenum pass into solution. At the present time, the associated extraction of molybdenum by the sorption method has been developed and introduced. In this case, the capacity of ion exchangers with respect to uranium and molybdenum substantially depends on the salt composition of the medium. The aim of this work is to study the sorption of molybdenum from a carbonate leach solution on BD-301G-I anion exchange resin in the presence of the most common anionic impurities in industrial solutions. Studies of the sorption capacity of anion exchange resin with respect to molybdenum were carried out under static conditions with stirring of the solution with the sorbent during eight hours. Sorption of molybdenum was carried out from carbonate solutions with the corresponding given concentrations of impurity components. According to the results of studies, it was found that, according to the strength of the depressing effect, the considered anions arranged in the following row: S2O3 2> NO3 > Cl> SO4 2> HCO3 > CO3 2> PO4 3-. The results of this study can be used to further study the sorption of molybdenum from real industrial solutions of carbonate leaching.
Al Farabi哈萨克斯坦国立大学，哈萨克斯坦阿拉木图*电子邮件：yenglikabzhan@gmail.com钼是最重要的铀相关金属之一。在许多矿床的矿石中，钼含量与铀含量相当。复杂铀钼矿的加工采用酸钠高压浸出法，铀和钼进入溶液中。目前，采用吸附法联合萃取钼的方法已经得到了发展和介绍。在这种情况下，离子交换器相对于铀和钼的容量基本上取决于介质的盐组成。本工作的目的是研究在工业溶液中最常见的阴离子杂质存在下，BD-301G-I阴离子交换树脂对碳酸盐浸出液中钼的吸附。阴离子交换树脂对钼的吸附能力的研究是在静态条件下进行的，用吸附剂搅拌溶液8小时。从具有相应给定杂质组分浓度的碳酸盐溶液中进行钼的吸附。根据研究结果，根据抑制作用的强度，所考虑的阴离子排列如下：S2O3 2>NO3>Cl>SO4 2>HCO3>CO3 2>PO4 3-。该研究结果可用于进一步研究碳酸盐浸出实际工业溶液中钼的吸附。
{"title":"The effect of anionic impurities on the sorption extraction of molybdenum from leaching solutions","authors":"Yelena Panova, Yenlik O. Abzhan, A. Zhussupova","doi":"10.15328/CB1138","DOIUrl":"https://doi.org/10.15328/CB1138","url":null,"abstract":"Al-Farabi Kazakh National University, Almaty, Kazakhstan *E-mail: yenglikabzhan@gmail.com Molybdenum is one of the most important uranium-related metals. In the ores of many deposits, the molybdenum content is comparable to the uranium content. The processing of complex uranium-molybdenum ores is based on the methods of acid and soda autoclave leaching, in which uranium and molybdenum pass into solution. At the present time, the associated extraction of molybdenum by the sorption method has been developed and introduced. In this case, the capacity of ion exchangers with respect to uranium and molybdenum substantially depends on the salt composition of the medium. The aim of this work is to study the sorption of molybdenum from a carbonate leach solution on BD-301G-I anion exchange resin in the presence of the most common anionic impurities in industrial solutions. Studies of the sorption capacity of anion exchange resin with respect to molybdenum were carried out under static conditions with stirring of the solution with the sorbent during eight hours. Sorption of molybdenum was carried out from carbonate solutions with the corresponding given concentrations of impurity components. According to the results of studies, it was found that, according to the strength of the depressing effect, the considered anions arranged in the following row: S2O3 2> NO3 > Cl> SO4 2> HCO3 > CO3 2> PO4 3-. The results of this study can be used to further study the sorption of molybdenum from real industrial solutions of carbonate leaching.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46009171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Some recommendations presented on the preparation of chemistry papers for publication in peer-reviewed journals, indexed in Scopus and Web of Science. Some advice given on the selection of a journal for publication. Impact factors and other types of classifications for different chemistry journals and publication business models by publishers briefly discussed. Some publishers specialising on publication of chemistry papers considered. Recommendations given on the preparation of each section in a manuscript, quality of illustrations as well as the documents necessary for submission of these to the journal. Some approaches used to revise the manuscript and to deal with reviewer comments also briefly discussed. This work is prepared based on the course “How to write a paper” delivered by the author at the University of Reading (United Kingdom) for a number of years for post-graduate students from physical natural sciences as well as the courses delivered in some institutions of China, Estonia, Kazakhstan and Russia. The course is based on author’s own experience in publishing over 150 papers in different peer-reviewed journals, refereeing numerous manuscripts as well as his work as an editor for some journals.
提出了一些关于准备在同行评审期刊上发表的化学论文的建议，这些论文在Scopus和Web of Science中被索引。关于选择期刊发表的一些建议。对不同化学期刊的影响因子和其他类型的分类以及出版商的出版商业模式进行了简要讨论。考虑到一些专门出版化学论文的出版商。对稿件中每个部分的准备，插图的质量以及提交给期刊所需的文件提出建议。还简要讨论了一些用于修改稿件和处理审稿人意见的方法。本书是根据作者在英国雷丁大学多年来为物理自然科学研究生讲授的“如何写论文”课程，以及在中国、爱沙尼亚、哈萨克斯坦和俄罗斯的一些机构讲授的课程编写的。本课程是基于作者本人在不同同行评议期刊上发表150多篇论文的经验，以及他作为一些期刊编辑的大量手稿。
{"title":"Preparation and publication of chemistry papers in international peer-reviewed journals","authors":"V. Khutoryanskiy","doi":"10.15328/cb1103","DOIUrl":"https://doi.org/10.15328/cb1103","url":null,"abstract":"Some recommendations presented on the preparation of chemistry papers for publication in peer-reviewed journals, indexed in Scopus and Web of Science. Some advice given on the selection of a journal for publication. Impact factors and other types of classifications for different chemistry journals and publication business models by publishers briefly discussed. Some publishers specialising on publication of chemistry papers considered. Recommendations given on the preparation of each section in a manuscript, quality of illustrations as well as the documents necessary for submission of these to the journal. Some approaches used to revise the manuscript and to deal with reviewer comments also briefly discussed. This work is prepared based on the course “How to write a paper” delivered by the author at the University of Reading (United Kingdom) for a number of years for post-graduate students from physical natural sciences as well as the courses delivered in some institutions of China, Estonia, Kazakhstan and Russia. The course is based on author’s own experience in publishing over 150 papers in different peer-reviewed journals, refereeing numerous manuscripts as well as his work as an editor for some journals.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44370732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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