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Kinetic Study on the Preparation of Aluminum Fluoride Based on Fluosilicic Acid 基于氟硅酸制备氟化铝的动力学研究
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-08-26 DOI: 10.2478/pjct-2021-0024
Gaoxiang Chen, Xingdong Yang, Jiyan Qu, Jianhong Luo, Zhiye Zhang, Lan Sun
{"title":"Kinetic Study on the Preparation of Aluminum Fluoride Based on Fluosilicic Acid","authors":"Gaoxiang Chen, Xingdong Yang, Jiyan Qu, Jianhong Luo, Zhiye Zhang, Lan Sun","doi":"10.2478/pjct-2021-0024","DOIUrl":"https://doi.org/10.2478/pjct-2021-0024","url":null,"abstract":"Abstract Reasonable mathematical derivation and mechanism model in the process of producing aluminum fluoride by fluosilicic acid is the key to the industrial treatment of fluorine resources in the tail gas of phosphate ore. In this work, aluminum fluoride was generated directly by fluosilicic acid to extract fluorine from the tail gas of phosphate rock. The uncreated-core model dominated by interfacial reaction and the uncreated-core model dominated by internal diffusion-reaction were then respectively utilized to describe the reaction kinetics of the generation of aluminum fluoride. The result showed that the uncreated-core model was dominated by interface reaction and internal diffusion, the apparent reaction order n = 1, and the activation energy Ea = 30.8632 kJ · mol–1. Product characterization and kinetic analysis were employed to deduce the reaction mechanism of preparing aluminum fluoride. The theoretical basis for the low-cost recycling of fluorine resources in the tail gas of industrial phosphate ore was provided in this work.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"10 - 16"},"PeriodicalIF":1.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46316975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The influence of sulfur addition on the hazard-type reaction of ilmenite ores with sulfuric acid 硫的添加对钛铁矿与硫酸危险型反应的影响
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-08-26 DOI: 10.2478/pjct-2021-0025
M. Jabłoński, K. Lubkowski, Sandra Tylutka, A. Ściążko
{"title":"The influence of sulfur addition on the hazard-type reaction of ilmenite ores with sulfuric acid","authors":"M. Jabłoński, K. Lubkowski, Sandra Tylutka, A. Ściążko","doi":"10.2478/pjct-2021-0025","DOIUrl":"https://doi.org/10.2478/pjct-2021-0025","url":null,"abstract":"Abstract The paper presents results of thermokinetic investigation of the hazard-type reaction of Norwegian and Australian ilmenite ores with sulfuric acid, modified by the addition of elemental sulfur, to increase the process safety in industrial conditions. In the reactions of both ilmenite ores the addition of sulfur caused a reduction of the thermal power generated in the reaction and a decrease in the value of the thermokinetic parameter ΔTmax/Δτ for almost the whole range of initial concentrations of sulfuric acid. It was also found that the addition of sulfur to the reaction did not negatively affect the degree of ilmenite leaching. The interpretation of the obtained thermokinetic curves allowed to determine safe process conditions for both types of titanium raw materials.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"17 - 23"},"PeriodicalIF":1.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41512249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Internal Micro-electrolysis Using Fe/C Material for Pre-Treatment of Concentrated Coking Wastewater Fe/C材料内微电解预处理高浓度焦化废水
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-06-01 DOI: 10.2478/pjct-2021-0015
V. T. Nguyen, Tra Huong Do, Duy Nhan Vu, T. T. Ngân
{"title":"Internal Micro-electrolysis Using Fe/C Material for Pre-Treatment of Concentrated Coking Wastewater","authors":"V. T. Nguyen, Tra Huong Do, Duy Nhan Vu, T. T. Ngân","doi":"10.2478/pjct-2021-0015","DOIUrl":"https://doi.org/10.2478/pjct-2021-0015","url":null,"abstract":"Abstract Untreated coking effluent presents a great challenge for sustainable development of the steel industry and environment preservation. In this study, an internal micro-electrolysis method using Fe/C materials was employed for pretreatment of real coking wastewater with high mass concentration. The Fe/C materials were prepared by Fe powder and graphite powder; and the characteristics of surface morphology, structure, composition of the synthesized materials were examined by Scanning electron microscopy (SEM), X-ray diffraction (XRD) and Energy Dispersive X-ray Spectroscopy (EDS). The effects of factors namely dosage of Fe/C material, treatment time, initial pH and temperature were investigated via chemical oxygen demand (COD) and phenol removal efficiencies. Optimal treatment efficiency was attained at pH of 4, Fe/C dosage of 40 g/L, treatment time of 360 minutes and temperature of 25°C. After the internal electrolysis process, the values of COD, BOD5, and phenol of the wastewater were 6500, 4850 and 0.1 mg/L, respectively.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"41 - 46"},"PeriodicalIF":1.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46951240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Offset printing results analysis of different based inks in cardboard packaging production 胶印结果分析不同基油墨在纸板包装生产中的应用
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-06-01 DOI: 10.2478/pjct-2021-0022
Osman Şimşeker
{"title":"Offset printing results analysis of different based inks in cardboard packaging production","authors":"Osman Şimşeker","doi":"10.2478/pjct-2021-0022","DOIUrl":"https://doi.org/10.2478/pjct-2021-0022","url":null,"abstract":"Abstract The main raw material of paper and cardboard used in packaging is cellulose. Cardboard packages made of cardboard, which can be produced in much different quality and weight, are obtained in numerous shapes and appearances1, 2. Paper and cardboard packaging are among the most economical packaging types. Using less raw materials, more durable but thin, light, economical cardboard is produced2, 3. In this study, under equal printing conditions, test prints were made on cardboard substrates (for cardboard packaging) with mineral oil based, vegetable oil (soy oil) based and UV cured inks used for the printing of the same images. After these prints, the properties of mineral oil, vegetable oil and UV ink; the effect on the print results was measured from different ways (Chroma*, Print density, unprinted surface Gloss 75°, Print Gloss 60°). At the same time, the visual differences between the print results were determined by the optical imaging (SEM) method and were examined by the elemental analysis method.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"88 - 93"},"PeriodicalIF":1.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42639689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of the effects on ink colour of lacquer coating applied to the printed substrate in the electrophotographic printing system 电子照相印刷系统中涂布在印刷基材上的涂料对油墨颜色影响的研究
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-06-01 DOI: 10.2478/pjct-2021-0014
Sinan Sönmez, Serra Arslan
{"title":"Investigation of the effects on ink colour of lacquer coating applied to the printed substrate in the electrophotographic printing system","authors":"Sinan Sönmez, Serra Arslan","doi":"10.2478/pjct-2021-0014","DOIUrl":"https://doi.org/10.2478/pjct-2021-0014","url":null,"abstract":"Abstract In this study, the effects of the lacquer applied to the printing materials which were printed by electrophotographic printing method on printing quality were investigated. In practice, printing materials with the same weight and different optical properties were used and the study was carried out in three stages. The optical and physical properties of the printing materials used in the first part were determined, in the second part, the printing of these materials by electrophotographic printing method and printability tests were performed. In the third chapter, matte and glossy lacquers were applied to these printed materials and printability tests were repeated. As a result of the study, it was observed that the application of gloss and matte lacquer caused a decrease in the printing density values and also the application of matte lacquer caused a decrease in the gloss values.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"35 - 40"},"PeriodicalIF":1.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45924044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Fe-modified activated carbon obtained from biomass as a catalyst for α-pinene autoxidation fe改性活性炭作为α-蒎烯自氧化的催化剂
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-06-01 DOI: 10.2478/pjct-2021-0020
A. Kamińska, Nikola Maciejewska, P. Miądlicki, K. Kiełbasa, J. Sreńscek-Nazzal, B. Michalkiewicz
{"title":"Fe-modified activated carbon obtained from biomass as a catalyst for α-pinene autoxidation","authors":"A. Kamińska, Nikola Maciejewska, P. Miądlicki, K. Kiełbasa, J. Sreńscek-Nazzal, B. Michalkiewicz","doi":"10.2478/pjct-2021-0020","DOIUrl":"https://doi.org/10.2478/pjct-2021-0020","url":null,"abstract":"Abstract The presented work describes the autoxidation of alpha-pinene for the first time using a catalyst based on activated carbon from biomass with introduced Fe. The raw material for the preparation of the carbon material was waste orange peel, which was activated with a KOH solution. The following instrumental methods characterized the obtained catalyst (Fe/O_AC):N2 adsorption at 77 K, XRD, UV, SEM, TEM, X-ray microanalysis, and catalytic studies. It was shown that the Fe/O_AC catalyst was very active in the autoxidation of alpha-pinene. The main reaction products were: alpha-pinene oxide, verbenone, verbenol, and campholenic aldehyde.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"73 - 80"},"PeriodicalIF":1.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46649220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Synthesis and spectroscopic interpretations of Co(II), Ni(II) and Cu(II) decxycholate complexes with molecular docking of COVId-19 protease 与COVId-19蛋白酶分子对接的Co(II)、Ni(II)和Cu(II)脱羧胆酸配合物的合成和光谱解释
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-06-01 DOI: 10.2478/pjct-2021-0017
M. Refat, S. B. Bakare, T. Altalhi, Kehkashan Alam, G. H. Al-Hazmi
{"title":"Synthesis and spectroscopic interpretations of Co(II), Ni(II) and Cu(II) decxycholate complexes with molecular docking of COVId-19 protease","authors":"M. Refat, S. B. Bakare, T. Altalhi, Kehkashan Alam, G. H. Al-Hazmi","doi":"10.2478/pjct-2021-0017","DOIUrl":"https://doi.org/10.2478/pjct-2021-0017","url":null,"abstract":"Abstract Co(II), Ni(II) and Cu(II) decxycholate complexes are interesting due to their biologically active and deliberate interest in the research due to their coordination properties. The microanalytical ‘elemental analysis’, molar conductivity, (infrared and Raman) spectroscopy, thermal analyses (TGA/DSC), UV-vis spectra, and ESR for copper(II) decxycholate complex investigations were performed in the structural assignments of Co(II), Ni(II) and Cu(II) decxycholate complexes. Reaction of the sodium deoxycholate ligand (C24H39O4Na) with three transition metal ions form the complexes of formulae, [M(C24H39O4)2(H2O)2]. xH2O where M = Co(II), Ni(II) and Cu(II) where x = 2 for Cu(II) and x = 4 in case of M = Co(II) or Ni(II) metal ions. The FTIR spectra of the complexes show that decxycholate molecule is present as bidentate ligand. Molecular docking utilizing to additionally examine the interaction of COVID-19 (6LU7) with different complexes of deoxycholic acid with Co(II), Ni(II) and Cu(II). Furthermore, in the case of Co(II) deoxycholate complex, the probe is surrounded by amino residues Met235, Pro241, Glu240, Pro108, Gln110, Phe294, and Ile152. The probe molecule of Ni(II) deoxycholate complex is sited close to amino acids Tyr126, Tyr239, Leu287, Leu272, and Lys137. For, Cu(II) deoxycholate complex, the residues of amino acids comprise of Pro132, Pro108, Gln110, Gly109, Ile200, Asn203, Val202, His246, Pro293 and Tyr154. The binding energy was determined from the docking reads for Co(II)–6LU7, Ni(II)–6LU7 and Cu(II)–6LU7 deoxycholate compounds were found to be −446.99, −500.52, −398.13 kcal mol−1 individually.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"54 - 59"},"PeriodicalIF":1.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47463626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A mathematical model of two-stage Solid Oxide Fuel Cell, SOFC, stacks for dynamic simulation of Combined Heat and Power system fed by natural gas 一种用于天然气供热和动力联合系统动态模拟的两级固体氧化物燃料电池（SOFC）堆的数学模型
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-06-01 DOI: 10.2478/pjct-2021-0010
M. Palus, P. Pianko-Oprych
{"title":"A mathematical model of two-stage Solid Oxide Fuel Cell, SOFC, stacks for dynamic simulation of Combined Heat and Power system fed by natural gas","authors":"M. Palus, P. Pianko-Oprych","doi":"10.2478/pjct-2021-0010","DOIUrl":"https://doi.org/10.2478/pjct-2021-0010","url":null,"abstract":"Abstract Zero-dimensional two-stage SOFC stacks dynamic model was developed to investigate the effect of operating parameters on stacks performance. The model resolves spatially thermal and thermo-electrochemical behaviour for electrochemical reactions, Catalytic Partial Oxidation and Steam Reforming processes. Design variables and thermo-electrochemical properties were obtained from in-house-fabricated SOFCs carried out by project partners. The completed SOFCs based Combined Heat and Power, CHP, system model was validated by data18 and numerical results obtained at steady-state mode showing its high-fidelity. A parametric study with respect to key operating parameters including changes in fuel utilization, lambda number and current density values was conducted. The global CHP system dynamic response, in term of the current/voltage delivered by two-stage SOFC stacks, under a fixed fuel utilization, has been determined resulting in greater variations in the voltage of a single cell in the first stack in comparison to the corresponding values in the second stack.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"1 - 11"},"PeriodicalIF":1.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48929551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Time-dependent growth of the dendritic silver prepared using square wave voltammetry technique for methylene blue photodegradation 用方波伏安法制备的树枝状银的时间依赖性生长，用于亚甲基蓝的光降解
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-06-01 DOI: 10.2478/pjct-2021-0018
S. Budi, Lintang Dhanasmoro, A. Purwanto, S. Muhab
{"title":"Time-dependent growth of the dendritic silver prepared using square wave voltammetry technique for methylene blue photodegradation","authors":"S. Budi, Lintang Dhanasmoro, A. Purwanto, S. Muhab","doi":"10.2478/pjct-2021-0018","DOIUrl":"https://doi.org/10.2478/pjct-2021-0018","url":null,"abstract":"Abstract Silver (Ag) particle is a promising photocatalyst material with relatively high catalytic activity and good absorption in the visible light region. A dendritic structure of Ag has been studied in the purpose to enhance photocatalytic activity due to a large surface area and active site number of the metallic Ag particles. In this work, the Ag dendritic structure was synthesized from a surfactant-free electrolyte using the square wave voltammetry technique. The time-dependent growth of the Ag dendrites and their photocatalytic activity on methylene blue (MB) photodegradation are reported. Morphological analysis exhibits the fractal dendritic structure of Ag was found to continuously grow by increasing the deposition time. The Ag dendrites showed a low charge transfer resistance (366.21 Ω) and high specific capacitance (2.09 F/g). A high rate of MB degradation (45.57%) under ultraviolet irradiation indicated that the Ag dendrites produced using this technique are effective for the photocatalytic degradation of MB dye.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"60 - 65"},"PeriodicalIF":1.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41463641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Heat transfer investigations in a liquid that is mixed by means of a multi-ribbon mixer 利用多带混合器混合的液体中的传热研究
IF 1 4区 工程技术
Polish Journal of Chemical Technology Pub Date : 2021-06-01 DOI: 10.2478/pjct-2021-0019
T. Borowski, Dawid Sołoducha, D. Musik, Krzysztof Wójcik, Mariusz Chyla, Katarzyna Ziętarska, M. Friedrich, A. Kiełbus-Rąpała, M. Kordas, M. Konopacki, R. Rakoczy
{"title":"Heat transfer investigations in a liquid that is mixed by means of a multi-ribbon mixer","authors":"T. Borowski, Dawid Sołoducha, D. Musik, Krzysztof Wójcik, Mariusz Chyla, Katarzyna Ziętarska, M. Friedrich, A. Kiełbus-Rąpała, M. Kordas, M. Konopacki, R. Rakoczy","doi":"10.2478/pjct-2021-0019","DOIUrl":"https://doi.org/10.2478/pjct-2021-0019","url":null,"abstract":"Abstract The objective of this paper is to present the investigations of the heat transfer process carried out by means of the multi-ribbon mixer. It is shown that the heat transfer process for the synergic effect of the mixing process and the flowing liquid through the mixer has significantly higher values of the heat transfer coefficients than the mixer with motionless impellers. The empirical correlations between the heat transfer coefficient and the operational parameters obtained in this work can provide guidance for the design and operation of an apparatus equipped with the multi-ribbon impeller. These empirical correlations can be used to predict the heat transfer coefficient for the multi-ribbon mixer.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"23 1","pages":"66 - 72"},"PeriodicalIF":1.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44841896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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