Pub Date : 2023-07-14DOI: 10.6000/1929-5030.2023.12.01
S. Chandramouleeswaran, J. Ramkumar
The spectrophotometric determination of uranyl ion with 4-(2-Pyridylazo)resorcinol (PAR) is a well known and old method. However this technique gives scope for further research in order to make it more selective as well as sensitive for uranyl ion determination. In this study, the experimental protocol has simplified as compared to previous report. An attempt to evaluate the uncertainty budget associated with the determination has been carried out. The effect of different cationic interferences has been studied and a simple method was developed to reduce the interferences.
{"title":"Uranyl - PyridylAzo Resorcinol System: Uncertainty Budget Evaluation and Interference Elimination","authors":"S. Chandramouleeswaran, J. Ramkumar","doi":"10.6000/1929-5030.2023.12.01","DOIUrl":"https://doi.org/10.6000/1929-5030.2023.12.01","url":null,"abstract":"The spectrophotometric determination of uranyl ion with 4-(2-Pyridylazo)resorcinol (PAR) is a well known and old method. However this technique gives scope for further research in order to make it more selective as well as sensitive for uranyl ion determination. In this study, the experimental protocol has simplified as compared to previous report. An attempt to evaluate the uncertainty budget associated with the determination has been carried out. The effect of different cationic interferences has been studied and a simple method was developed to reduce the interferences.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74256469","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}
Pub Date : 2022-02-21DOI: 10.6000/1929-5030.2022.11.03
L. Tsygankova, M. Uryadnikova, N. Shel, A. A. Kostyakova
Protective efficiency of inhibitors of the "INCORGAZ" and "AMDOR" series is analyzed in relation to carbon steel corrosion in model stratum waters of oil and gas fields saturated with hydrogen sulfide and carbon dioxide separately and together. The bactericidal properties of the inhibitors with respect to sulfate-reducing bacteria, reduction of steel hydrogenation, influence on the preservation of metal plastic properties are evaluated. The contributions of the inhibitor and the shielding film of corrosion products to the total protective effect are considered. The inhibitors under study provide a decrease in the corrosion rate of carbon steel to a value much less than 0.05 mm/year, according to the data of 240-hour exposure in hydrogen sulfide environments.
{"title":"Мultifunctional Inhibitors of \"INCORGAZ\" and \"AMDOR\" Series against Hydrosulfide and Carbon Dioxide Corrosion of Steel","authors":"L. Tsygankova, M. Uryadnikova, N. Shel, A. A. Kostyakova","doi":"10.6000/1929-5030.2022.11.03","DOIUrl":"https://doi.org/10.6000/1929-5030.2022.11.03","url":null,"abstract":"Protective efficiency of inhibitors of the \"INCORGAZ\" and \"AMDOR\" series is analyzed in relation to carbon steel corrosion in model stratum waters of oil and gas fields saturated with hydrogen sulfide and carbon dioxide separately and together. The bactericidal properties of the inhibitors with respect to sulfate-reducing bacteria, reduction of steel hydrogenation, influence on the preservation of metal plastic properties are evaluated. The contributions of the inhibitor and the shielding film of corrosion products to the total protective effect are considered. The inhibitors under study provide a decrease in the corrosion rate of carbon steel to a value much less than 0.05 mm/year, according to the data of 240-hour exposure in hydrogen sulfide environments.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79821295","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}
Pub Date : 2022-02-21DOI: 10.6000/1929-5030.2022.11.07
V. A. Nikolaevskiy, E. Tanygina
The possibility of the effectiveness of increasing the wound healing, increasing the strength of the scar, and reducing the signs of the wound inflammation when replacing Panthenolspray (AEROPHARM, Germany) with glauconite powder has been investigated during the process of the experimental research. Glauconite powder can be used in the treatment of infected wounds and burns.
{"title":"Environmental and Medical Aspects of the Glauconite Application","authors":"V. A. Nikolaevskiy, E. Tanygina","doi":"10.6000/1929-5030.2022.11.07","DOIUrl":"https://doi.org/10.6000/1929-5030.2022.11.07","url":null,"abstract":"The possibility of the effectiveness of increasing the wound healing, increasing the strength of the scar, and reducing the signs of the wound inflammation when replacing Panthenolspray (AEROPHARM, Germany) with glauconite powder has been investigated during the process of the experimental research. Glauconite powder can be used in the treatment of infected wounds and burns.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82124936","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}
Pub Date : 2022-02-21DOI: 10.6000/1929-5030.2022.11.06
A. Kornev, L. Knyazeva
The results of the study of the physicochemical and protective properties of vegetable oils are presented. It was determined that refining reduces the protective efficiency of vegetable oils. Unrefined sunflower and rapeseed oils can be used for corrosion protection in closed unheated rooms in the absence of direct atmospheric precipitation, and their sludge can be used in an open atmosphere.
{"title":"Relationship of Physico-Chemical and Protective Properties of Vegetable Oils","authors":"A. Kornev, L. Knyazeva","doi":"10.6000/1929-5030.2022.11.06","DOIUrl":"https://doi.org/10.6000/1929-5030.2022.11.06","url":null,"abstract":"The results of the study of the physicochemical and protective properties of vegetable oils are presented. It was determined that refining reduces the protective efficiency of vegetable oils. Unrefined sunflower and rapeseed oils can be used for corrosion protection in closed unheated rooms in the absence of direct atmospheric precipitation, and their sludge can be used in an open atmosphere.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"105 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85897202","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}
Pub Date : 2022-02-21DOI: 10.6000/1929-5030.2022.11.02
L. Knyazeva, A. Zavrazhnov
The analysis is given of some corrosion problems in the agro-industrial complex associated with various climatic conditions, specific operating environments for machinery and equipment, and some particular solutions are shown related to the use of anti-corrosive materials that are available and effective in agricultural production.
{"title":"Some Corrosion Problems in Agricultural Production and ways of their Solution","authors":"L. Knyazeva, A. Zavrazhnov","doi":"10.6000/1929-5030.2022.11.02","DOIUrl":"https://doi.org/10.6000/1929-5030.2022.11.02","url":null,"abstract":"The analysis is given of some corrosion problems in the agro-industrial complex associated with various climatic conditions, specific operating environments for machinery and equipment, and some particular solutions are shown related to the use of anti-corrosive materials that are available and effective in agricultural production.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88665456","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}
Pub Date : 2022-02-21DOI: 10.6000/1929-5030.2022.11.01
I.B. Gazrati, N.Z. Vansinvin, A. N. Nefedov, A. K. Akurpekova, A. Z. Abilmagzhanov
The paper presents data on the corrosion rate of steel 20 in the presence of organochlorine compounds in the oil. It is shown that with an increase in the concentration of organochlorine compounds, the corrosion rate of steel increases. It was found that with the addition of an inhibitor at CCl4 concentrations of 0.01 and 0.05%, the corrosion rate decreases, while at a CCl4 concentration of 0.03%, the corrosion rate does not change.
{"title":"Study of the Rate of Corrosion of Steel 20 in the Presence of Increased Content of Organic Chlorinous Compounds in Oil","authors":"I.B. Gazrati, N.Z. Vansinvin, A. N. Nefedov, A. K. Akurpekova, A. Z. Abilmagzhanov","doi":"10.6000/1929-5030.2022.11.01","DOIUrl":"https://doi.org/10.6000/1929-5030.2022.11.01","url":null,"abstract":"The paper presents data on the corrosion rate of steel 20 in the presence of organochlorine compounds in the oil. It is shown that with an increase in the concentration of organochlorine compounds, the corrosion rate of steel increases. It was found that with the addition of an inhibitor at CCl4 concentrations of 0.01 and 0.05%, the corrosion rate decreases, while at a CCl4 concentration of 0.03%, the corrosion rate does not change.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87624391","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}
Pub Date : 2022-02-21DOI: 10.6000/1929-5030.2022.11.05
Ya.A. Vissurkhanova, N. Ivanova, Y. A. Soboleva, L. Abulyaissova, B. Minaev
Copper ferrite (CuFe2O4) samples were prepared by the co-precipitation method without and in the presence of a polymer stabilizer (polyvinyl alcohol, PVA) followed by heat treatment at 500, 700, and 900°C and electrochemical reduction. The structure and morphological features of the samples were investigated by X-ray phase analysis and electron microscopy. It was established that copper (II) ferrite is reduced in an electrochemical system with the formation of Fe-Cu composites with different content of reduced metals, which is influenced by the heat treatment temperature. Copper ferrite prepared with the use of the polymer stabilizer is partially reduced during thermolysis, additionally in an electrochemical cell. The Fe-Cu composites were employed as electrocatalysts in the electrohydrogenation of p-nitrobenzoic acid and exhibited good activity in this process. To study the interaction in the CuFe2O4 + PVA complexes, the quantum-chemical calculations were performed using the density functional theory methods for the simplified metal-containing systems (atoms and ions of copper (II), iron (III), Cu2, Fe2 molecules) as well as dimers and trimers modeling the structure of polyvinyl alcohol.
{"title":"Electrocatalytic Properties of Fe-Cu Composites Prepared on the Basis of the Reduced Copper (II) Ferrite","authors":"Ya.A. Vissurkhanova, N. Ivanova, Y. A. Soboleva, L. Abulyaissova, B. Minaev","doi":"10.6000/1929-5030.2022.11.05","DOIUrl":"https://doi.org/10.6000/1929-5030.2022.11.05","url":null,"abstract":"Copper ferrite (CuFe2O4) samples were prepared by the co-precipitation method without and in the presence of a polymer stabilizer (polyvinyl alcohol, PVA) followed by heat treatment at 500, 700, and 900°C and electrochemical reduction. The structure and morphological features of the samples were investigated by X-ray phase analysis and electron microscopy. It was established that copper (II) ferrite is reduced in an electrochemical system with the formation of Fe-Cu composites with different content of reduced metals, which is influenced by the heat treatment temperature. Copper ferrite prepared with the use of the polymer stabilizer is partially reduced during thermolysis, additionally in an electrochemical cell. The Fe-Cu composites were employed as electrocatalysts in the electrohydrogenation of p-nitrobenzoic acid and exhibited good activity in this process. To study the interaction in the CuFe2O4 + PVA complexes, the quantum-chemical calculations were performed using the density functional theory methods for the simplified metal-containing systems (atoms and ions of copper (II), iron (III), Cu2, Fe2 molecules) as well as dimers and trimers modeling the structure of polyvinyl alcohol.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85689922","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}
Pub Date : 2022-02-21DOI: 10.6000/1929-5030.2022.11.08
K. Shestakov
A large number of scientific papers in recent decades have been devoted to the mathematical description of a mass transfer of substances through membranes. The choice of a mathematical model is to be carried out depending on the specific separation process used. This study represents a verification of how the predicted value of the solute flow density obtained using pre-calculated friction coefficients corresponds to real experimental data for electrochemical baromembrane separation of model solutions. The experimental and theoretically calculated values of the Ni (II), Cu (II), and Fe (III) cations flux density through the heterogeneous cellulose acetate membranes MGA-95 and MGA-100 are compared. It is established that the use of the mass transfer friction model is quite effective in predicting the kinetic characteristics of electrochemical membrane separation of solutions using semipermeable membranes. The calculation error in most cases is within one percent.
{"title":"The Friction Coefficient Investigation during Electrochemical Baromembrane Separation of Model Solutions","authors":"K. Shestakov","doi":"10.6000/1929-5030.2022.11.08","DOIUrl":"https://doi.org/10.6000/1929-5030.2022.11.08","url":null,"abstract":"A large number of scientific papers in recent decades have been devoted to the mathematical description of a mass transfer of substances through membranes. The choice of a mathematical model is to be carried out depending on the specific separation process used. This study represents a verification of how the predicted value of the solute flow density obtained using pre-calculated friction coefficients corresponds to real experimental data for electrochemical baromembrane separation of model solutions. The experimental and theoretically calculated values of the Ni (II), Cu (II), and Fe (III) cations flux density through the heterogeneous cellulose acetate membranes MGA-95 and MGA-100 are compared. It is established that the use of the mass transfer friction model is quite effective in predicting the kinetic characteristics of electrochemical membrane separation of solutions using semipermeable membranes. The calculation error in most cases is within one percent.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91305727","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}
Pub Date : 2022-02-21DOI: 10.6000/1929-5030.2022.11.04
M. Vigdorowitsch
A thermodynamics-based approach to determining stability conditions for metallic nano-ensembles is proposed. It is related to that [ultra-]dispersing the substance leads to changes in thermodynamic potentials (TPs) compared to those of a massive crystal of the same nature. This dimensional phenomenon consists of two components. Among those are a reduction of TPs due to vacancy-related effects and an increase of TPs due to the surface tension effect. Even linear, exponential, and normal distributions of particles on their size in the ensemble have been considered. The resulting equations have been applied to the nano-ensembles of either In or Au particles. The presence of ultra-small particles in an ensemble makes the vacancy-related effect more apparent than the surface tension effect, promoting system stability. With the decrease in the number of ultra-small particles, the vacancy-related effect drastically diminishes and can yield to the surface tension effect, thereby leading to the loss of stability.
{"title":"Nano-Metal Stability and its Outcomes","authors":"M. Vigdorowitsch","doi":"10.6000/1929-5030.2022.11.04","DOIUrl":"https://doi.org/10.6000/1929-5030.2022.11.04","url":null,"abstract":"A thermodynamics-based approach to determining stability conditions for metallic nano-ensembles is proposed. It is related to that [ultra-]dispersing the substance leads to changes in thermodynamic potentials (TPs) compared to those of a massive crystal of the same nature. This dimensional phenomenon consists of two components. Among those are a reduction of TPs due to vacancy-related effects and an increase of TPs due to the surface tension effect. Even linear, exponential, and normal distributions of particles on their size in the ensemble have been considered. The resulting equations have been applied to the nano-ensembles of either In or Au particles. The presence of ultra-small particles in an ensemble makes the vacancy-related effect more apparent than the surface tension effect, promoting system stability. With the decrease in the number of ultra-small particles, the vacancy-related effect drastically diminishes and can yield to the surface tension effect, thereby leading to the loss of stability.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89833758","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}
Pub Date : 2021-04-14DOI: 10.6000/1929-5030.2021.10.01
P. S. S. Ibrahim, J. Jeyakumar, S. Vinayagam
: The parameters like density( ρ ), ultrasonic velocity (U), and viscosity ( η ) were experimentally measured. The excess parameters like adiabatic compressibility, acoustic impedance, free volume, free length, internal pressure and ultrasonic velocity in addition to K value were computed from the experimental data. The variation of these parameters at a constant temperature for the three ternary systems, namely OMP + 1-pentanol+n-hexane, N, N-DMF + 1-pentanol+n-hexane, and MMP + 1-pentanol+n-hexane, have been discussed in the light of molecular interaction. Further, certain theoretical studies are validated with respect to experimental velocities, and the Chi-square test for the goodness of fit is also applied to check the validity of such theoretical models.
{"title":"Excess Properties and Theoretical Evaluation on Ternary Systems of 1-Pentanol in n-Hexane Solution with some Organic Compounds at 313 K Using Ultrasonic Technique","authors":"P. S. S. Ibrahim, J. Jeyakumar, S. Vinayagam","doi":"10.6000/1929-5030.2021.10.01","DOIUrl":"https://doi.org/10.6000/1929-5030.2021.10.01","url":null,"abstract":": The parameters like density( ρ ), ultrasonic velocity (U), and viscosity ( η ) were experimentally measured. The excess parameters like adiabatic compressibility, acoustic impedance, free volume, free length, internal pressure and ultrasonic velocity in addition to K value were computed from the experimental data. The variation of these parameters at a constant temperature for the three ternary systems, namely OMP + 1-pentanol+n-hexane, N, N-DMF + 1-pentanol+n-hexane, and MMP + 1-pentanol+n-hexane, have been discussed in the light of molecular interaction. Further, certain theoretical studies are validated with respect to experimental velocities, and the Chi-square test for the goodness of fit is also applied to check the validity of such theoretical models.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78217784","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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