Pub Date : 2024-03-01DOI: 10.31044/1684-5811-2024-25-3-106-112
L. M. Karimova, A.S. Korabayev, T. Oleinikova, I. Terentyeva, A.A. Magaz
{"title":"Study of gold leaching after oxidative roasting of refractory gold concentrate","authors":"L. M. Karimova, A.S. Korabayev, T. Oleinikova, I. Terentyeva, A.A. Magaz","doi":"10.31044/1684-5811-2024-25-3-106-112","DOIUrl":"https://doi.org/10.31044/1684-5811-2024-25-3-106-112","url":null,"abstract":"","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"41 31","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140276086","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 : 2023-12-01DOI: 10.31044/1684-5811-2023-24-12-463-469
A. Kasikov, L. V. Dyakova, Artyom Y. Sokolov
The solvent extraction of Fe(III), Co(II), Cu(II), Zn(II) impurities from chloride-sulfate nickel solutions by individual extractants and mixtures based on a tertiary amine has been studied. Using an example of the extraction of cobalt(II), the influence of the type of modifier, concentration of the extractant, nature of the diluent for the extraction of impurities was determined. A technological scheme for the purification of nickel solutions from impurities was developed.
{"title":"Purification of concentrated nickel chloride-sulfate solutions of «Kola MMC» JSC from impurities by solvent extraction","authors":"A. Kasikov, L. V. Dyakova, Artyom Y. Sokolov","doi":"10.31044/1684-5811-2023-24-12-463-469","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-12-463-469","url":null,"abstract":"The solvent extraction of Fe(III), Co(II), Cu(II), Zn(II) impurities from chloride-sulfate nickel solutions by individual extractants and mixtures based on a tertiary amine has been studied. Using an example of the extraction of cobalt(II), the influence of the type of modifier, concentration of the extractant, nature of the diluent for the extraction of impurities was determined. A technological scheme for the purification of nickel solutions from impurities was developed.","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"59 3-4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139191702","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 : 2023-08-01DOI: 10.31044/1684-5811-2023-24-8-293-299
O.I. Pokrovsky, D.V. Ovchinnikov, A. D. Ivakhnov, I.V. Chernyshev
A simple method for production of buckthorn buckthorn oil (Hippophae rhamnoides) with a total carotenoid content sufficient to meet the pharmacopoeial requirements for sea buckthorn oil used as a wound healing agent is proposed. The method is based on the extraction of dry pulp of sea buckthorn fruit with supercritical carbon dioxide at high pressures (50 MPa) to achieve a high content of carotenoids in the oil, followed by centrifugation to separate ballast solid wax fractions. Chromatographic and photometric analysis of the chemical composition of the oil confirm the prospects of this approach to obtaining sea buckthorn oil.
{"title":"Production of Sea Buckthorn Oil by Extraction of Sea Buckthorn Fruit Pulp with Supercritical Carbon Dioxide Followed by Centrifugation","authors":"O.I. Pokrovsky, D.V. Ovchinnikov, A. D. Ivakhnov, I.V. Chernyshev","doi":"10.31044/1684-5811-2023-24-8-293-299","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-8-293-299","url":null,"abstract":"A simple method for production of buckthorn buckthorn oil (Hippophae rhamnoides) with a total carotenoid content sufficient to meet the pharmacopoeial requirements for sea buckthorn oil used as a wound healing agent is proposed. The method is based on the extraction of dry pulp of sea buckthorn fruit with supercritical carbon dioxide at high pressures (50 MPa) to achieve a high content of carotenoids in the oil, followed by centrifugation to separate ballast solid wax fractions. Chromatographic and photometric analysis of the chemical composition of the oil confirm the prospects of this approach to obtaining sea buckthorn oil.","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352927","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 : 2023-01-01DOI: 10.31044/1684-5811-2023-24-6-216-221
V. A. Revina, V. Verezhnikov, I. Pugacheva, L. Molokanova, V. Sedykh, S. Nikulin
{"title":"Prospect of application of taurine in production of emulsion rubbers","authors":"V. A. Revina, V. Verezhnikov, I. Pugacheva, L. Molokanova, V. Sedykh, S. Nikulin","doi":"10.31044/1684-5811-2023-24-6-216-221","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-6-216-221","url":null,"abstract":"","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73931064","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 : 2023-01-01DOI: 10.31044/1684-5811-2023-24-2-66-72
Y. Zablotskaya, G. B. Sadykhov, A.S. Tushilin, T. V. Olyunina
{"title":"Influence of desiliconization conditions on the formation of wollastonite during lime autoclave leaching of silicon-titanium concentrates","authors":"Y. Zablotskaya, G. B. Sadykhov, A.S. Tushilin, T. V. Olyunina","doi":"10.31044/1684-5811-2023-24-2-66-72","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-2-66-72","url":null,"abstract":"","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76472768","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 : 2023-01-01DOI: 10.31044/1684-5811-2023-24-7-274-280
L. M. Karimova, I. Terentyeva, T. O. Oleinikova
{"title":"Solvent extraction of molybdenum from nitric acid leaching solutions using CYANEX®600","authors":"L. M. Karimova, I. Terentyeva, T. O. Oleinikova","doi":"10.31044/1684-5811-2023-24-7-274-280","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-7-274-280","url":null,"abstract":"","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"217 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75720346","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 : 2023-01-01DOI: 10.31044/1684-5811-2023-24-6-230-240
V. Kaptsov, V. Pankova
Assessing the service life of gas mask filters by subjective sensory response is unreliable and is prohibited in all developed countries. It is the employer's responsibility to determine the service life by another method, and to replace them on a schedule. Estimation of service life is done experimentally, or by mathematical modeling. End of Service Life Indicators are used very rarely.
{"title":"Timely replacement of gas mask filters used by workers to protect from toxic gases (review)","authors":"V. Kaptsov, V. Pankova","doi":"10.31044/1684-5811-2023-24-6-230-240","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-6-230-240","url":null,"abstract":"Assessing the service life of gas mask filters by subjective sensory response is unreliable and is prohibited in all developed countries. It is the employer's responsibility to determine the service life by another method, and to replace them on a schedule. Estimation of service life is done experimentally, or by mathematical modeling. End of Service Life Indicators are used very rarely.","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"30 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83923236","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 : 2023-01-01DOI: 10.31044/1684-5811-2023-24-4-142-150
S. Ivannikov, N. Markin, N. Polyakova, Y.I Shashina, D. Shlyk, L. A. Zemskova
The possibility of determining the scandium content in ash and slag waste and monitoring the effectiveness of operations in the ash processing by the method of instrumental neutron activation analysis was shown. The scandium content and elemental composition of ash and slag waste from thermal power plants and intermediate products of their processing are presented. An increased content of scandium in the magnetic fraction of ash was established.
{"title":"Possibilities of instrumental neutron activation analysis for determination and monitoring of scandium extraction from TPP ash","authors":"S. Ivannikov, N. Markin, N. Polyakova, Y.I Shashina, D. Shlyk, L. A. Zemskova","doi":"10.31044/1684-5811-2023-24-4-142-150","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-4-142-150","url":null,"abstract":"The possibility of determining the scandium content in ash and slag waste and monitoring the effectiveness of operations in the ash processing by the method of instrumental neutron activation analysis was shown. The scandium content and elemental composition of ash and slag waste from thermal power plants and intermediate products of their processing are presented. An increased content of scandium in the magnetic fraction of ash was established.","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89867799","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 : 2023-01-01DOI: 10.31044/1684-5811-2023-24-7-242-246
M. O. Moldurushku, N. Kopylov, B. K. Kara-sal
{"title":"Recycling of Sludge Waste with Production Ceramic Materials","authors":"M. O. Moldurushku, N. Kopylov, B. K. Kara-sal","doi":"10.31044/1684-5811-2023-24-7-242-246","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-7-242-246","url":null,"abstract":"","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87535558","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 : 2023-01-01DOI: 10.31044/1684-5811-2023-24-4-151-159
D. A. Ryzhkin, V. Raeva, A. Frolkova
По результатам вычислительного эксперимента на платформе Aspen Plus V.10.0 дан про-гноз результатов экстрактивной ректификации четырехкомпонентной смеси растворите-лей и предложены принципиальные схемы разделения с использованием разных селективных агентов в колоннах экстрактивной ректификации, работающих при разном дав-лении.
Aspen Plus .10.0计算实验的结果显示，四种化合物的特制调制产生了支持-制度化的结果，并提出了在不同的调试柱中使用不同选择剂的分离方案。
{"title":"Regularities of extractive rectification of methanol—acetonitrile—tetrahydrofuran—water mixture at different pressures","authors":"D. A. Ryzhkin, V. Raeva, A. Frolkova","doi":"10.31044/1684-5811-2023-24-4-151-159","DOIUrl":"https://doi.org/10.31044/1684-5811-2023-24-4-151-159","url":null,"abstract":"По результатам вычислительного эксперимента на платформе Aspen Plus V.10.0 дан про-гноз результатов экстрактивной ректификации четырехкомпонентной смеси растворите-лей и предложены принципиальные схемы разделения с использованием разных селективных агентов в колоннах экстрактивной ректификации, работающих при разном дав-лении.","PeriodicalId":9863,"journal":{"name":"Chemical Engineering","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82432745","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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