PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference最新文献

The regeneration of saturated ionites after extraction of hexavalent chromium from wastewater of chromium production plant 铬厂废水中六价铬萃取后饱和离子离子的再生

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134198

A. Pastukhov, M. L. Chernyi, S. Skripchenko

{"title":"The regeneration of saturated ionites after extraction of hexavalent chromium from wastewater of chromium production plant","authors":"A. Pastukhov, M. L. Chernyi, S. Skripchenko","doi":"10.1063/1.5134198","DOIUrl":"https://doi.org/10.1063/1.5134198","url":null,"abstract":"The process of hexavalent chromium recovery by various eluents (alkaline solutions of sodium sulfate, alkaline solutions of sodium chloride and ammonium chloride solutions with the addition of ammonia) from saturated anion exchange resin Purolite A500/4994 was investigated. The desorption process was most efficiently carried out using ammonium chloride solutions (100 g L−1) with the addition of ammonia (1–5 %) and sodium chloride solutions (100 g L–1) with the addition of sodium hydroxide (10–50 g L−1). The degree of chromium recovery was more than 98 %. The chromium content in pregnant solution was 14–23 g/L. When using alkaline solutions of sodium sulfate for regeneration, chromium recovery degree was 78–96 %. In addition, the chromium content in pregnant solution did not exceed 6 g/L.The process of hexavalent chromium recovery by various eluents (alkaline solutions of sodium sulfate, alkaline solutions of sodium chloride and ammonium chloride solutions with the addition of ammonia) from saturated anion exchange resin Purolite A500/4994 was investigated. The desorption process was most efficiently carried out using ammonium chloride solutions (100 g L−1) with the addition of ammonia (1–5 %) and sodium chloride solutions (100 g L–1) with the addition of sodium hydroxide (10–50 g L−1). The degree of chromium recovery was more than 98 %. The chromium content in pregnant solution was 14–23 g/L. When using alkaline solutions of sodium sulfate for regeneration, chromium recovery degree was 78–96 %. In addition, the chromium content in pregnant solution did not exceed 6 g/L.","PeriodicalId":418936,"journal":{"name":"PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116962447","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}

引用次数: 0

Electret properties of polylactic acid – Montmorillonite composites 聚乳酸-蒙脱土复合材料的驻极体性能

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134177

R. I. Kamalova, A. M. Minzagirova, M. Galikhanov, R. R. Spiridonova, A. Guzhova, R. Khairullin

{"title":"Electret properties of polylactic acid – Montmorillonite composites","authors":"R. I. Kamalova, A. M. Minzagirova, M. Galikhanov, R. R. Spiridonova, A. Guzhova, R. Khairullin","doi":"10.1063/1.5134177","DOIUrl":"https://doi.org/10.1063/1.5134177","url":null,"abstract":"The paper describes electret characteristics of polylactic acids and its composites with montomorillonite at different ratios of the components. Electret properties behavior patterns of both pure and composite polylactic acid films showed two regions – the region of the sharp charge drop and the region of its slight decrease. The sharp drop of the film charge results from a release of charge carriers from the small (surface) energy traps. Following this, the total charge value is determined by the number of injected charge carriers captured by the deeper energy traps. Corona electrets based on polylactic acid have poor electret properties due to significant impact of heterocharge. Addition of montmorillonite increased electret properties of the PLA – 2 % montmorillonite in the composition improved electret performances by 5–10 times, 4 % montmorillonite – by 10–18 times. This significant effect of the fine filler on the electret properties of the polylactic acid arises from high specific surface area of montmorillonite that results in large number of macromolecules being adsorbed on the surface of the nanoparticles. Homocharge relaxation rate reduction due to fine filled addition to the polylactic acid was shown not to be the result of changes in specific surface and volume resistivity of the material. ATR-IR spectroscopy revealed no considerable changes in the chemical structure of the surface of polylactic acid filled with nanoparticles. It was concluded that montomorillonite addition to polylactic acid increased electret properties due to generation of new injected charge carrier traps at a polymer-filler interface boundary. The addition of 4 % montmorillonite was the most efficient for enhancing electret properties of polylactic acid.","PeriodicalId":418936,"journal":{"name":"PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117060365","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}

引用次数: 1

Systematization of chemical pollutants in samples of river water in Yekaterinburg city and Sverdlovsk Region 叶卡捷琳堡市和斯维尔德洛夫斯克州河水样本中化学污染物的系统化

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134319

P. N. Mozharovskaya, Yu. A. Lykova, V. Semenishchev

引用次数: 2

The study of possible use of lactic bacteria in brewing 乳酸菌在酿造中的应用研究

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134250

N. Chervina, I. V. Geide, I. Selezneva

引用次数: 1

Movement of head and center of mass: Joint assessment 头部和质心的运动:关节评估

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134335

V. Vasilyev, V. Borisov, A. Syskov

引用次数: 1

The influence of lead ions on the mechanical function of right ventricle myocardium 铅离子对右心室心肌力学功能的影响

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134322

O. Gerzen, I. Simanova, S. Nabiev, L. Nikitina, I. Selezneva

引用次数: 1

Sintering of uranium dioxide nanoparticles. A molecular dynamics simulation 二氧化铀纳米颗粒的烧结。分子动力学模拟

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134209

D. Seitov, Y. A. Gracheva, K. Nekrasov, A. Kupryazhkin, Sanjeev K. Gupta, A. Akilbekov

{"title":"Sintering of uranium dioxide nanoparticles. A molecular dynamics simulation","authors":"D. Seitov, Y. A. Gracheva, K. Nekrasov, A. Kupryazhkin, Sanjeev K. Gupta, A. Akilbekov","doi":"10.1063/1.5134209","DOIUrl":"https://doi.org/10.1063/1.5134209","url":null,"abstract":"A molecular dynamics simulation of sintering of two octahedral uranium dioxide nanocrystals contacting in the vertex region is carried out. Two main stages of the sintering process are observed. At the beginning of the simulation, the neck between the crystallites is formed due to the mutual attraction of the adjacent (111) faces. Further increase in the neck thickness occurs due to transport of the material from the surface of the crystallites in a much slower diffusion process. The estimate of the activation energy of this process is in the range from 11 to 14 eV.A molecular dynamics simulation of sintering of two octahedral uranium dioxide nanocrystals contacting in the vertex region is carried out. Two main stages of the sintering process are observed. At the beginning of the simulation, the neck between the crystallites is formed due to the mutual attraction of the adjacent (111) faces. Further increase in the neck thickness occurs due to transport of the material from the surface of the crystallites in a much slower diffusion process. The estimate of the activation energy of this process is in the range from 11 to 14 eV.","PeriodicalId":418936,"journal":{"name":"PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129083859","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}

引用次数: 0

Synthesis of (Y0.95Eu0.05)2O3 thin transparent oxide films from layered rare earth hydroxides prepared by coprecipitation at a constant pH value 恒pH共沉淀法制备层状稀土氢氧化物制备(Y0.95Eu0.05)2O3透明薄膜

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134171

E. Gordeev, M. Mashkovtsev, D. Aleshin, S. V. Buynachev, N. Zhirenkina, E. Baksheev, D. A. Danilov

引用次数: 2

Local analysis of oxidation state of iron in oxide minerals using electron microprobe 用电子探针局部分析氧化铁矿物中的氧化态

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134168

I. Danilenko, D. Zamyatin, S. Votyakov, I. S. Chashchukhin

引用次数: 2

Mathematical modeling of nonlinear growth rates of crystals with allowance for Meirs kinetics 考虑Meirs动力学的晶体非线性生长速率的数学建模

PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference Pub Date : 2019-12-06 DOI: 10.1063/1.5134287

E. Makoveeva

引用次数: 1