Membranes and Membrane Technologies最新文献

Deoxygenation of a CO2 Absorbent Based on Monoethanolamine in Gas–Liquid Membrane Contactors: Dynamic Process Modeling 基于单乙醇胺的CO2吸附剂在气液膜接触器中的脱氧：动态过程建模

IF 2

Membranes and Membrane Technologies Pub Date : 2024-12-12 DOI: 10.1134/S2517751624600493

D. O. Kalmykov, S. A. Shirokih, D. N. Matveev, I. V. Petrova, S. D. Bazhenov

{"title":"Deoxygenation of a CO2 Absorbent Based on Monoethanolamine in Gas–Liquid Membrane Contactors: Dynamic Process Modeling","authors":"D. O. Kalmykov, S. A. Shirokih, D. N. Matveev, I. V. Petrova, S. D. Bazhenov","doi":"10.1134/S2517751624600493","DOIUrl":"10.1134/S2517751624600493","url":null,"abstract":"The study focuses on the removal of dissolved oxygen from a model monoethanolamine (MEA)-based absorbent to prevent oxidative degradation during the absorption process of flue gas CO2 removal. A mathematical model was developed to evaluate the deoxygenation parameters in a gas-liquid membrane contactor using composite hollow-fiber membranes with a thin non-porous layer made of a blend of polytrimethylsilylpropyne and polyvinyltrimethylsilane. The modeling results were shown to be in good agreement with experimental data on O2 removal efficiency. The model was applied to assess the scaling of the membrane system for dissolved O2 removal to handle an absorbent flow rate of 120 m3/h in a hypothetical CO2 capture plant using absorption technology. The influence of system parameters (absorbent linear flow rate, membrane contactor length, number of membranes in the contactor, initial O2 concentration in the absorbent) on O2 removal efficiency was determined. It was shown that to achieve 90% removal of dissolved oxygen, at least 12 membrane modules with a length of 1 meter and a total membrane area of 1800 m2 are required. Various scenarios of dynamically changing external system parameters (oxygen concentration in the feed, absorbent flow rate) were simulated for the designed membrane system to predict the system’s response.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 4","pages":"248 - 258"},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811246","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

Selective Separation of Aromatics by Pervaporation of Azeotropic Toluene/Methanol Mixture Using Polymer Membranes with 2-Pyridyl-Quinoline Groups 2-吡啶喹啉基聚合物膜渗透汽化甲苯/甲醇共沸混合物选择性分离芳烃

IF 2

Membranes and Membrane Technologies Pub Date : 2024-12-12 DOI: 10.1134/S2517751624600547

I. I. Faikov, A. Yu. Pulyalina, E. O. Gruzdeva, M. Ya. Goikhman, I. V. Podeshvo, N. L. Loretsyan, I. V. Gofman, I. V. Abalov, G. A. Polotskaya

{"title":"Selective Separation of Aromatics by Pervaporation of Azeotropic Toluene/Methanol Mixture Using Polymer Membranes with 2-Pyridyl-Quinoline Groups","authors":"I. I. Faikov, A. Yu. Pulyalina, E. O. Gruzdeva, M. Ya. Goikhman, I. V. Podeshvo, N. L. Loretsyan, I. V. Gofman, I. V. Abalov, G. A. Polotskaya","doi":"10.1134/S2517751624600547","DOIUrl":"10.1134/S2517751624600547","url":null,"abstract":"Copolyamide coPA and its metal–polymer complex coPA–Cu2+ (MPC)—new polyheteroarylenes—have been synthesized and used to obtain dense nonporous membranes. Some physical properties of the membranes have been determined: density and glass transition temperature, as well as the water contact angle, which showed increased hydrophobicity in the MPC membrane. Thermogravimetric and differential thermal analyses have been used to assess the thermal stability of the membranes. Transport properties have been studied during pervaporation of a toluene/methanol mixture. The coPA and MPC membranes are predominantly permeable to toluene for all feed mixture compositions. In separation of the azeotropic toluene/methanol = 31 : 69 (w/w) mixture, the coPA membrane showed the best separation factor equal to 64, while the MPC membrane had a higher permeability of 26.7 g/(m2 h) than the coPA membrane. Based on the sorption studies of membrane samples in toluene and methanol, the degree of equilibrium sorption has been determined. New membranes will be most cost-effective in separating toluene/methanol mixtures with a low toluene content.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 4","pages":"259 - 266"},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811041","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

Production of Hollow Fiber Gas Separation Membranes by Interfacial Polycondensation 界面缩聚法制备中空纤维气体分离膜

IF 2

Membranes and Membrane Technologies Pub Date : 2024-12-12 DOI: 10.1134/S2517751624600481

E. S. Liubimava, T. A. Hliavitskaya, A. V. Bildyukevich

{"title":"Production of Hollow Fiber Gas Separation Membranes by Interfacial Polycondensation","authors":"E. S. Liubimava, T. A. Hliavitskaya, A. V. Bildyukevich","doi":"10.1134/S2517751624600481","DOIUrl":"10.1134/S2517751624600481","url":null,"abstract":"The work is devoted to the fabrication of hollow fiber thin-layer composite gas separation membranes with an internal selective layer using interfacial polycondensation followed by deposition of a polydimethylsiloxane (PDMS) layer on a polysulfone membrane substrate. The effect of the concentration of amine (triethylenetetramine (TETA)) and acyl (isophthaloyl chloride (IPC)) components and the conditions of PDMS layer deposition on the change in the gas permeability of composite membranes in O2/N2 separation was studied. It was found that after forming the selective layer by the interfacial polycondensation method, hollow fibers with high gas permeability values (≥1000 GPU) were obtained regardless of the monomers used and their concentration, with the O2/N2 separation factor α being about 1. After applying an additional layer using 1–3 wt % PDMS solutions, the separation factor was 1.5–3.7. The maximum value of the separation factor was found in a fairly narrow range of TETA concentrations (0.15–0.6%) and at a certain equivalent TETA/IPC ratio. The first maximum (α O2/N2 = 3.5) is observed at a weight concentration ratio of TETA/IPC = 0.15/0.26, and the second maximum, at the concentration ratio of TETA/IPC = 0.6/0.15, with the permeability of the composite membranes for oxygen being 107 and 76 GPU, respectively.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 4","pages":"225 - 233"},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811040","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

Preparation of Composite Membranes from Polydecylmethylsiloxane and Polymethylpentafluoropropylacrylatesiloxane Copolymer: Effect of the Conversion Degree and Polymer Solution Rheology 聚十二烷基甲基硅氧烷和聚五氟甲基丙基丙烯酸硅氧烷共聚物制备复合膜：转化率和聚合物溶液流变学的影响

IF 2

Membranes and Membrane Technologies Pub Date : 2024-12-12 DOI: 10.1134/S2517751624600432

T. N. Rokhmanka, E. A. Grushevenko, M. Yu. Polyakova, G. S. Golubev, I. L. Borisov

{"title":"Preparation of Composite Membranes from Polydecylmethylsiloxane and Polymethylpentafluoropropylacrylatesiloxane Copolymer: Effect of the Conversion Degree and Polymer Solution Rheology","authors":"T. N. Rokhmanka, E. A. Grushevenko, M. Yu. Polyakova, G. S. Golubev, I. L. Borisov","doi":"10.1134/S2517751624600432","DOIUrl":"10.1134/S2517751624600432","url":null,"abstract":"Preparation of composite membranes is a complex technological task. To ensure high permeability and selectivity of these membranes, preliminary preparation of a selective layer polymer solution is of importance. In this work, the copolymer of polydecylmethylsiloxane and polymethylpentafluoropropylacrylatesiloxane with a theoretical block ratio of 1 : 1 has been synthesized for the first time. According to 1Н NMR studies, with increasing the time of hydrosilylation of the reaction mixture from 10 to 50 min the degree of substitution of Si–H bonds increases, with the degree of conversion of pentafluoropropyl acrylate being close to quantitative (100 mol %). A change in the hydosilylation degree affects the nature of the rheological behavior of the solution: in 50 min the polymer solutions change from a Newtonian fluid to a gel-like state, which has a crucial effect on changes in their viscosity and ability to form a uniform defect-free coating on a MFFK‑1 microfiltration support. Based on the data on the surface morphology and elemental analysis and the gas permeability of the membranes, the optimal range of polymer solution viscosity is determined, which allows the production of defect-free composite membranes with the minimal flow of the selective layer polymer into the pores of the support. It has been demonstrated that the polymer flow into the support pores and the thickness of the selective layer can be controlled by changing the viscosity of the polymer solution. It has been revealed that the viscosity of the polydecylmethylsiloxane–polymethylpentafluoropropylacrylatesiloxane copolymer solution on the order of ~0.005–0.006 Pa s is optimal for producing composite membranes.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 4","pages":"234 - 247"},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811247","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

Influence of Chemical Structure of Ion-Exchange Membranes and Current Regimes on the Efficiency of Wine Tartrate Stabilization Using Electrodialysis 离子交换膜化学结构及电流状态对电渗析稳定酒石酸盐效率的影响

IF 2

Membranes and Membrane Technologies Pub Date : 2024-12-12 DOI: 10.1134/S251775162460047X

E. L. Pasechnaya, A. V. Klevtsova, A. V. Korshunova, D. A. Chuprynina, N. D. Pismenskaya

{"title":"Influence of Chemical Structure of Ion-Exchange Membranes and Current Regimes on the Efficiency of Wine Tartrate Stabilization Using Electrodialysis","authors":"E. L. Pasechnaya, A. V. Klevtsova, A. V. Korshunova, D. A. Chuprynina, N. D. Pismenskaya","doi":"10.1134/S251775162460047X","DOIUrl":"10.1134/S251775162460047X","url":null,"abstract":"Electrodialysis is increasingly being used for tartrate stabilization of wine, ensuring speed, reproducibility, preservation of valuable components and low environmental impact. In this work, electrodialysis stabilization of wine was carried out using membrane cells formed by pairs of homogeneous (AMX-Sb//CMX-Sb and CJMA-3//CJMC-3) and heterogeneous (MA-41//MK-40 and AMH-PES//CMH-PES) ion-exchange membranes. A comparative analysis of the duration of electrodialysis was performed to reduce the electrical conductivity of the model wine solution by 20%, the degree of extraction of potassium cations and anions (chlorides, sulfates, and tartrates) from its solution as well as energy consumption and pH changes in the desalination and concentration streams. It has been shown that the transport of large, highly hydrated tartaric acid anions in heterogeneous membranes of MA-41 and AMH-PES has steric difficulties. The result of these difficulties is the preferred transfer of chlorides in these membranes, the concentration of which in the model wine solution is an order of magnitude lower than tartrates. The energy consumption required to remove 1 kg of tartrates from the model wine solution is growing in a row: CJMA-3//CJMC-3 < AMX-Sb//CMX-Sb < AMH-PES//CMH-PES < MA-41//MK-40. Replacing the constant electric field mode traditional for electrodialysis with a pulsed electric field mode reduces the energy consumption from 10 to 30% depending on the chemical nature of the membranes.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 4","pages":"273 - 289"},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811248","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

Effects of Unsteadiness in Membrane Separation of Solutions 溶液膜分离中不稳定性的影响

IF 2

Membranes and Membrane Technologies Pub Date : 2024-12-12 DOI: 10.1134/S2517751624600468

D. Yu. Khanukaeva, P. A. Aleksandrov, A. N. Filippov

{"title":"Effects of Unsteadiness in Membrane Separation of Solutions","authors":"D. Yu. Khanukaeva, P. A. Aleksandrov, A. N. Filippov","doi":"10.1134/S2517751624600468","DOIUrl":"10.1134/S2517751624600468","url":null,"abstract":"Nonstationary diffusion problems are considered within the framework of the homogeneous membrane model for a closed membrane cell and a cross-flow cell with a tangential flow of feed solution and permeate in the absence and presence of convection (as applied to dialysis and any pressure-driven membrane process for separating solutions of neutral substances). Characteristic features of a steady state establishment in each of the three cases considered have been revealed, and simple algebraic formulae have been obtained for calculating the time it takes the process to reach a steady state depending on each of the problem parameters. It has been found that membrane characteristics, such as the diffusion coefficient of solute molecules in the membrane and the magnitude of the potential barrier for diffusing components, have a lesser effect on the process stabilization rate than the thickness of the diffusion layer or the flow regime in the case of convective diffusion. It is the additional surface forces, as well as stirring, that make a decisive contribution to the unsteady-state period of the convective diffusion regime. It has been established that purely diffusion processes (for example, dialysis) are not only slower than convective-diffusion processes, but also reach a steady state more slowly. At the same time, it was revealed that the time to reach a steady state in each process is significantly shorter than the characteristic time of the process itself. This fact provides additional justification for the validity of stationary formulations of the problems studied.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 4","pages":"213 - 224"},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811094","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

Effect of Acetic Acid Dissociation Reaction on the Limiting Current Density in a System with a Rotating Membrane Disk 醋酸解离反应对旋转膜盘体系极限电流密度的影响

IF 2

Membranes and Membrane Technologies Pub Date : 2024-12-12 DOI: 10.1134/S2517751624600444

M. V. Sharafan, A. D. Gorobchenko, V. V. Nikonenko

{"title":"Effect of Acetic Acid Dissociation Reaction on the Limiting Current Density in a System with a Rotating Membrane Disk","authors":"M. V. Sharafan, A. D. Gorobchenko, V. V. Nikonenko","doi":"10.1134/S2517751624600444","DOIUrl":"10.1134/S2517751624600444","url":null,"abstract":"At present, the nature of the limiting state of electromembrane systems in solutions of strong electrolytes (e.g., NaCl) is well known. The value of the limiting current in these systems with a rotating membrane disk (RMD) can be calculated quite accurately using the Levich equation. In cases where weak acids and/or their salts are present in the electromembrane system, this equation ceases to be satisfied and the electrodiffusion ion transport is complicated by proton-transfer chemical reactions between these acids, their anions, and water. In this work, the effect of these reactions on the limiting current density in a system with a rotating disk of a cation-exchange membrane and acetic acid has been experimentally studied. The results of voltammetry and their theoretical interpretation using the known mathematical model are presented. Conditions under which the mass transfer rate is limited by the diffusion delivery of acetic acid molecules to the membrane surface, as well as conditions under which the limiting stage is the reaction of their dissociation at the membrane/depleted solution interface, have been revealed.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 4","pages":"290 - 297"},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811250","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

Determination of Gas Transport Parameters of a Bilayer Membrane Using the Method of Statistical Moments of the Sorption Kinetic Curve 用吸附动力学曲线统计矩法测定双层膜的气体输运参数

IF 2

Membranes and Membrane Technologies Pub Date : 2024-12-12 DOI: 10.1134/S2517751624600456

V. V. Ugrozov

引用次数: 0

Concentration Polarization in Membrane Systems 膜系统中的浓度极化

IF 2

Membranes and Membrane Technologies Pub Date : 2024-10-27 DOI: 10.1134/S2517751624600390

P. Yu. Apel, P. M. Biesheuvel, O. V. Bobreshova, I. L. Borisov, V. I. Vasil’eva, V. V. Volkov, E. A. Grushevenko, V. V. Nikonenko, A. V. Parshina, N. D. Pismenskaya, I. I. Ryzhkov, M. V. Sharafan, A. B. Yaroslavtsev

引用次数: 0

Modification of Track-Etched Polyethylene Terephthalate Membranes with Functionalized Silanes for Immobilizing Silver Nanoparticles 用功能化硅烷改性痕蚀聚对苯二甲酸乙二醇酯膜以固定银纳米粒子

IF 2

Membranes and Membrane Technologies Pub Date : 2024-10-27 DOI: 10.1134/S2517751624600298

I. N. Fadeikina, E. V. Andreev, K. N. Grin’, A. N. Nechaev

{"title":"Modification of Track-Etched Polyethylene Terephthalate Membranes with Functionalized Silanes for Immobilizing Silver Nanoparticles","authors":"I. N. Fadeikina, E. V. Andreev, K. N. Grin’, A. N. Nechaev","doi":"10.1134/S2517751624600298","DOIUrl":"10.1134/S2517751624600298","url":null,"abstract":"The work is devoted to the fabrication of hybrid track-etched polyethylene terephthalate membranes with immobilized silver nanoparticles exhibiting the effect of surface-enhanced Raman scattering. Track-etched membranes were modified with 3-aminopropyltriethoxysilane and 3-mercaptopropyltriethoxysilane using anchor groups based on hydrated forms of aluminum and subsequent immobilization of silver nanoparticles. The resulting track-etched membranes were studied using energy-dispersive X-ray spectroscopy, and the zeta potential of the surface of membrane samples was determined at each modification stage. The presence of silver nanoparticles on the surface of the track-etched membranes was confirmed by scanning electron microscopy, ultraviolet–visible absorption spectroscopy, and surface-enhanced Raman spectroscopy using the test substance 4-aminothiophenol. The proposed approach will help to create sensors based on hybrid track-etched membranes with the possibility of selective sample concentration and further detection of a wide range of substances using surface-enhanced Raman spectroscopy.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 3","pages":"205 - 211"},"PeriodicalIF":2.0,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518750","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