Membranes and Membrane Technologies最新文献

Enthalpy of Interaction of Lithium Nafion Membrane with Aqueous Solutions of Alcohols and Polar Aprotic Solvents

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S2517751624600869

S. D. Chernyuk, A. P. Safronov, O. V. Bushkova

引用次数: 0

Rate Constants of Rate-Limiting Steps of the Water Splitting Reaction in Heterogeneous Bipolar Membranes Containing Catalyst Particles

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S2517751624600870

N. V. Kovalev, I. P. Averyanov, T. V. Karpenko, N. V. Sheldeshov, V. I. Zabolotsky

引用次数: 0

Inion Sulfocation Exchange Membranes Plasticized with Propylene Carbonate

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S2517751624600845

R. R. Kayumov, A. A. Lochina, A. N. Lapshin, A. V. Bakirov, L. V. Shmygleva

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Manifestations of Fouling of Heterogeneous Membranes by Components of Wine Materials in the Process of Their Tartrate Stabilization by Electrodialysis

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S2517751624600808

E. L. Pasechnaya, M. A. Ponomar, A. V. Klevtsova, K. A. Kirichenko, K. V. Solonchenko, N. D. Pismenskaya

{"title":"Manifestations of Fouling of Heterogeneous Membranes by Components of Wine Materials in the Process of Their Tartrate Stabilization by Electrodialysis","authors":"E. L. Pasechnaya, M. A. Ponomar, A. V. Klevtsova, K. A. Kirichenko, K. V. Solonchenko, N. D. Pismenskaya","doi":"10.1134/S2517751624600808","DOIUrl":"10.1134/S2517751624600808","url":null,"abstract":"Tartrate stabilization of wine materials by electrodialysis makes it possible to speed up and automate this process and reduce the loss of valuable components. Widespread implementation of electrodialysis in industrial wine production is hampered by fouling of ion-exchange membranes with wine components and by the very limited range of membranes currently used. This study is devoted to a comparative analysis of properties of relatively inexpensive heterogeneous ion-exchange membranes MA-41, MK-40, AMH-PES, and CMH-PES before and after their use in tartrate stabilization of wine materials by electrodialysis. It is shown that the mechanisms of fouling and its effect on transport characteristics, as well as on the development of electroconvection and generation of H+ and OH– ions, are largely determined by counterions that are transferred through cation-exchange (transition metal cations) and anion-exchange (carboxylic acid anions) membranes. Membranes MA-41 and MK-40 demonstrate higher resistance to fouling during operation of an electrodialysis device for less than 15 h.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 5","pages":"357 - 370"},"PeriodicalIF":2.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564532","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

Ethanol Steam Reforming Using Nanoporous Carbon Materials in Conventional and Membrane Reactors

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S2517751624600791

E. Yu. Mironova, M. M. Ermilova, N. V. Orekhova, N. A. Zhilyaeva, M. N. Efimov, A. A. Vasilev, I. A. Stenina, A. B. Yaroslavtsev

引用次数: 0

Modification of Ultrafiltration Membranes Based on Polyacrylonitrile

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S2517751624600778

K. S. Burts, M. V. Krasnova, M. S. Makarava, A. L. Yaskevich, T. V. Plisko, E. A. Nazarov, A. V. Bildyukevich

{"title":"Modification of Ultrafiltration Membranes Based on Polyacrylonitrile","authors":"K. S. Burts, M. V. Krasnova, M. S. Makarava, A. L. Yaskevich, T. V. Plisko, E. A. Nazarov, A. V. Bildyukevich","doi":"10.1134/S2517751624600778","DOIUrl":"10.1134/S2517751624600778","url":null,"abstract":"Three methods for modification of polyacrylonitrile (PAN) ultrafiltration membranes with polyelectrolytes are considered: (1) bulk modification by introducing polyacrylic acid (PAA) into the casting solution, (2) surface modification by using aqueous solutions of polyethyleneimine (PEI) as a coagulation bath, and (3) a combination of methods 1 and 2. In all three cases, modification of membranes with polyelectrolytes leads to effective hydrophilization of the surface of ultrafiltration membranes (the contact angle decreases from 41° to 15°–25°). It has been found that the bulk modification of PAN membranes by introducing 0.05–0.2 wt % PAA into the casting solution leads to a decrease in the pure water flux from 110 to 96 L/m2 h. The maximum polyvinylpyrrolidone K30 rejection coefficient of 96% was observed at a PAA concentration of 0.05 wt %; with a subsequent increase in the PAA content, the rejection coefficient decreases to 70–73%. Surface modification of PAN membranes with polyethyleneimine leads to a more than twofold increase in their water flux (up to 233–294 L/m2 h), while the rejection coefficient for polyvinylpyrrolidone K30 was 82–96% depending on the PEI concentration in the coagulation bath. It is shown that the combined modification method reduces the water flux to 44 L/m2 h, which is associated with the formation of a polyelectrolyte complex and compaction of the membrane structure. It has been found that the combined modification method allows obtaining ultrafiltration PAN membranes with a high flux recovery ratio after filtration of model solutions of polyvinylpyrrolidone (73–100% compared to 65% for the unmodified membrane) and humic acids (80% compared to 73% for the unmodified membrane).","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 5","pages":"299 - 309"},"PeriodicalIF":2.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564535","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

MK-40 Membranes Surface-Modified with Ceria: Preparation and Properties

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S251775162460078X

P. A. Yurova, A. D. Manin, I. A. Stenina, A. B. Yaroslavtsev

引用次数: 0

Aquivion Hybrid Membranes Modified with Hydrated Oxides MO2 (M = Si, Ti, Ce): Transport Properties and Chemical Stability

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S251775162460081X

E. Yu. Safronova, A. B. Yaroslavtsev

{"title":"Aquivion Hybrid Membranes Modified with Hydrated Oxides MO2 (M = Si, Ti, Ce): Transport Properties and Chemical Stability","authors":"E. Yu. Safronova, A. B. Yaroslavtsev","doi":"10.1134/S251775162460081X","DOIUrl":"10.1134/S251775162460081X","url":null,"abstract":"Due to the rapid development of hydrogen energy, increased attention is paid to the preparation of polymer ion-exchange membranes for low-temperature fuel cells. The paper presents the results of studying transport properties and chemical stability of hybrid materials based on a perfluorosulfonic acid polymer membrane with a short side chain Aquivion and hydrated oxides of silicon, titanium, and cerium obtained by the in situ method. Modification of the Aquivion membrane with hydrated silicon and titanium oxides leads to an increase in the proton conductivity of the membranes by 10–40% but, in the case of silica, is accompanied by a gain in gas permeability. The advantage of hybrid membranes Aquivion + SiO2 is their higher conductivity at reduced humidity (RH = 32%) compared to Aquivion. It is found that membranes based on perfluorosulfonic acid polymers with a short side chain (Aquivion) have higher chemical stability than those with a long one (Nafion®212). The introduction of hydrated titanium and cerium oxides leads to the preservation of high proton conductivity after membranes treatment with Fenton’s reagent along with their high chemical stability due to the ability of dopants to capture free radicals.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 5","pages":"325 - 331"},"PeriodicalIF":2.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564356","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

Ultrafiltration Separation of Crude Oil and Waste Oil

IF 2

Membranes and Membrane Technologies Pub Date : 2025-03-06 DOI: 10.1134/S2517751624600821

A. P. Nebesskaya, A. V. Balynin, A. A. Yushkin, A. V. Markelov, V. V. Volkov

{"title":"Ultrafiltration Separation of Crude Oil and Waste Oil","authors":"A. P. Nebesskaya, A. V. Balynin, A. A. Yushkin, A. V. Markelov, V. V. Volkov","doi":"10.1134/S2517751624600821","DOIUrl":"10.1134/S2517751624600821","url":null,"abstract":"Approximately 90 million barrels of crude oil are processed daily worldwide, with separation processes such as distillation accounting for 10–15% of global energy consumption. In this regard, the scientific community is faced with the ambitious task of finding alternative fractionation technologies that are not based on the volatility of individual components of complex liquid mixtures. The driving force of ultrafiltration is the pressure difference across the membrane. Therefore, separation occurs without phase transitions and with significantly lower energy consumption compared to distillation. In recent years, there has been a growing interest in the development of membrane technologies for the purification and reuse of used lubricating oil. One of the key challenges in membrane filtration of oil and lubricants is their high viscosity. This review examines two approaches to reducing the viscosity of such systems: filtration at elevated temperatures and pre-dilution of the feedstock followed by filtration. A literature analysis revealed that in most cases, ultrafiltration with ceramic membranes is employed in the former approach, while the latter uses more cost-effective polymer membranes. Special attention in the review is given to the issues of membrane fouling and regeneration.","PeriodicalId":700,"journal":{"name":"Membranes and Membrane Technologies","volume":"6 5","pages":"350 - 356"},"PeriodicalIF":2.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564533","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

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