IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-20 DOI: 10.3390/membranes14110244

Anca Filimon, Diana Serbezeanu, Daniela Rusu, Alexandra Bargan, Lavinia Lupa

{"title":"Design of High-Performance Electrospun Membranes for Protective Clothing Applications.","authors":"Anca Filimon, Diana Serbezeanu, Daniela Rusu, Alexandra Bargan, Lavinia Lupa","doi":"10.3390/membranes14110244","DOIUrl":"10.3390/membranes14110244","url":null,"abstract":"The integration of nanomaterials into the textile industry has significantly advanced the development of high-performance fabrics, offering enhanced properties such as UV blocking, fire resistance, breathability, hydrophobicity, antimicrobial activity, and dust rejection. In this context, our research explores the development and characterization of electrospun membranes composed of polyether ether ketone (PEEK) and various polyimides (PIs (1-6)), focusing on their application in protective clothing. The combination of phosphorus-containing polyimides and PEEK, along with the electrospinning process, enhances the distinctive properties of both PEEK and polyimides, leading to composite membranes that stand out according to key parameters essential for maintaining physiological balance. The structural and morphological characteristics of these membranes have been evaluated using Fourier transform infrared spectroscopy (FTIR) to identify the functional groups and scanning electron microscopy (SEM) to examine their morphology. These analyses provide critical insights into these materials' properties, which influence key performance parameters such as moisture management, breathability, and barrier functions. The membranes' breathability and impermeability were assessed through the water vapor transmission rate (WVTR), contact angle measurements, water and air permeability, and flame resistance tests. The results obtained indicate that PEEK/polyimide composite membranes meet the complex requirements of modern protective textiles, ensuring both safety and comfort for users through their optimized structural properties and enhanced functional capabilities.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 11","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596149/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142730208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient Separation of Oil/Water by a Biodegradable and Superhydrophobic Composite Based on Loofah and Rice Straw. 基于丝瓜络和稻草的生物可降解超疏水复合材料对油/水的高效分离。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-18 DOI: 10.3390/membranes14110243

Mamadou Souare, Changqing Dong, Tong Xing, Junjiao Zhang, Xiaoying Hu

引用次数: 0

Concentrating Cocoa Polyphenols-Clarification of an Aqueous Cocoa Extract by Protein Precipitation and Filtration. 浓缩可可多酚--通过蛋白质沉淀和过滤净化可可水提取物。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-17 DOI: 10.3390/membranes14110242

Nicole Beeler, Tilo Hühn, Sascha Rohn, Renato Colombi

{"title":"Concentrating Cocoa Polyphenols-Clarification of an Aqueous Cocoa Extract by Protein Precipitation and Filtration.","authors":"Nicole Beeler, Tilo Hühn, Sascha Rohn, Renato Colombi","doi":"10.3390/membranes14110242","DOIUrl":"10.3390/membranes14110242","url":null,"abstract":"The seeds of Theobroma cacao L. are rich in antioxidant flavonoids such as flavan-3-ols, which are valued for their health benefits. In this context, it is of interest to improve flavanol content in cocoa extracts. The present study aimed at improving the clarification process of an aqueous cocoa extract using protein precipitation and filtration. Five pH modifications and two bentonite amounts were tested for their effects on protein precipitation and flavanol content. Micro- and ultrafiltration as a subsequent step was done by testing three different ceramic membranes (30, 80, and 200 nm). Lower pH in pre-treatment reduced protein content and kept flavanols constant, while at higher pH, flavanols were reduced up to 40%. Larger membrane pores enhanced polyphenol permeation, while smaller pores limited protein permeation. Adjusting pH to the isoelectric point increased protein adsorption, improving filtration quality despite decreased permeate flux. However, membrane fouling results in higher permeate quality due to increased selectivity. Furthermore, the addition of bentonite during filtration reduced both protein and flavanol content in the permeate, similar to the effects seen in the pre-treatment of the supernatant. Optimizing pH and membrane pore size enhances the recovery and quality of polyphenols during filtration, balancing protein removal and flavanol retention.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 11","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596179/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142730194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Novel Delayed Phase Inversion Strategy Enables Green PVDF Membranes for Membrane Distillation. 一种新颖的延迟相反转策略使绿色 PVDF 膜用于膜蒸馏。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-15 DOI: 10.3390/membranes14110241

Wenbin Sun, Longbo Xia, Ping Luo, Dong Zou

{"title":"A Novel Delayed Phase Inversion Strategy Enables Green PVDF Membranes for Membrane Distillation.","authors":"Wenbin Sun, Longbo Xia, Ping Luo, Dong Zou","doi":"10.3390/membranes14110241","DOIUrl":"10.3390/membranes14110241","url":null,"abstract":"Polyvinylidene fluoride (PVDF) membranes are extensively utilized in membrane distillation (MD) for water treatment. However, traditional methods easily form asymmetrical membranes with dense skin layers that are detrimental to membrane flux. Herein, an eco-friendly PVDF membrane was fabricated by utilizing a delayed phase separation process without using any pore-forming agents. In addition, methyl-5-(dimethylamino)-2-methyl-5-oxopentanoate (PolarClean) was used as a green solvent without posing risks to humans and the environment. It was demonstrated that the PVDF concentration is crucial in influencing the microstructures and performance of the resulting membranes. As the PVDF concentration increased, the morphology changed significantly, resulting in a reduction of pore size. When feeding the device with NaCl solution at a concentration of 35 g/L, the MD water vapor flux reached 18.49 kg·m-2·h-1, while maintaining a salt rejection of over 99.97% during the continuous operation for 24 h. This work presented a method for producing green PVDF membranes via delayed phase inversion with satisfactory water vapor flux and salt rejection, highlighting their prospect for effective applications in MD for water treatment.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 11","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596376/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142730152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Separation of Copper and Nickel Metal Ions from Electroplating Wastewater by Ultrafiltration with Tartaric Acid and Sodium Citrate Reinforced Sodium Polyacrylate Complexation. 用酒石酸和柠檬酸钠增强聚丙烯酸钠络合超滤法分离电镀废水中的铜和镍金属离子。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-14 DOI: 10.3390/membranes14110240

Hanwen Zhang, Rui Cui

{"title":"Separation of Copper and Nickel Metal Ions from Electroplating Wastewater by Ultrafiltration with Tartaric Acid and Sodium Citrate Reinforced Sodium Polyacrylate Complexation.","authors":"Hanwen Zhang, Rui Cui","doi":"10.3390/membranes14110240","DOIUrl":"10.3390/membranes14110240","url":null,"abstract":"In this study, sodium polyacrylate (PAAS) and ultrafiltration membranes were used to extract and separate Cu2+ and Ni2+ ions from electroplating wastewater. The effects of pH, the P/M ratio (mass ratio of sodium polyacrylate to metal ions), tartaric acid, and sodium citrate on the complexation of Cu2+ and Ni2+ by sodium polyacrylate were investigated. The retention of Cu2+ and Ni2+ by PAAS in single metal solutions with a P/M ratio = 4 and pH = 5 differed by 45.36%. When the complexation system of PAAS with a single metal contained tartaric acid and sodium citrate, the retention of PAAS for Cu2+ and Ni2+ increased to 80.36% and 58.84%. PAAS retention for Ni2+ decreased, but retention for Cu2+ remained the same. All the results indicated that there was competition between tartaric acid, sodium citrate, and PAAS for the adsorption of Cu2+ and Ni2+. Some of the Ni2+ complexed with PAAS were detached from PAAS complexed by tartaric acid and sodium citrate and permeated through the membrane pores, while the Cu2+ complexed with PAAS was not complexed by tartaric acid and sodium citrate and could not permeate through the membrane pores. Therefore, this study helps to provide a theoretical basis for the separation of Cu2+ and Ni2+ in electroplating wastewater.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 11","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596544/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142730177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pharmaceutical Removal with Photocatalytically Active Nanocomposite Membranes. 利用具有光催化活性的纳米复合膜去除药物。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-13 DOI: 10.3390/membranes14110239

Marin Popović, Silvia Morović, Marin Kovačić, Krešimir Košutić

引用次数: 0

Syngas Production via Oxidative Reforming of Propane Using a CO₂- and O₂-Permeating Membrane. 使用二氧化碳和氧气渗透膜对丙烷进行氧化转化生产合成气。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-12 DOI: 10.3390/membranes14110238

José A Fabián-Anguiano, Lorena G Cuéllar-Herrera, José A Romero-Serrano, Issis C Romero-Ibarra, Antonieta García-Murillo, Felipe Carrillo-Romo, José Ortiz-Landeros

{"title":"Syngas Production via Oxidative Reforming of Propane Using a CO2- and O2-Permeating Membrane.","authors":"José A Fabián-Anguiano, Lorena G Cuéllar-Herrera, José A Romero-Serrano, Issis C Romero-Ibarra, Antonieta García-Murillo, Felipe Carrillo-Romo, José Ortiz-Landeros","doi":"10.3390/membranes14110238","DOIUrl":"10.3390/membranes14110238","url":null,"abstract":"Recently, ceramic-carbonate membrane reactors have been proposed to selectively separate CO2 at elevated temperatures and to valorize this pollutant gas by coupling a catalyzed reaction. This work explores using a membrane reactor to perform the oxidative reforming of propane by taking advantage of the CO2- and O2-permeating properties of a LiAlO2/Ag-carbonate membrane. The fabricated membrane showed excellent permeation properties, such as CO2/N2 and O2/N2 selectivity, when operating in the 725-850 °C temperature range. The membrane exhibited remarkable stability during the long-term permeation test under operating conditions, exhibiting minor microstructural and permeation changes. Then, by packing a Ni/CeO2 catalyst, the membrane reactor arrangement showed efficient syngas production, especially at temperatures above 800 °C. A hydrogen-rich syngas mixture was obtained by the contributions of the oxidative reforming and cracking reactions. Specific issues observed regarding the membrane reactor's performance are attributed to the catalyst that was used, which experienced significant poisoning by carbon deposition during the reaction, affecting syngas production during the long-term test. Thermodynamic calculations were performed to support the experimental results.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 11","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596156/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142730180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Computational Fluid Dynamics Modeling of Pressure-Retarded Osmosis: Towards a Virtual Lab for Osmotic-Driven Process Simulations. 压力阻滞渗透的计算流体动力学建模：实现渗透驱动过程模拟的虚拟实验室。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-11 DOI: 10.3390/membranes14110236

Meisam Mohammadi Amin, Ulrich Krühne

{"title":"Computational Fluid Dynamics Modeling of Pressure-Retarded Osmosis: Towards a Virtual Lab for Osmotic-Driven Process Simulations.","authors":"Meisam Mohammadi Amin, Ulrich Krühne","doi":"10.3390/membranes14110236","DOIUrl":"10.3390/membranes14110236","url":null,"abstract":"Pressure-Retarded Osmosis (PRO) is an osmotically driven membrane-based process that has recently garnered significant attention from researchers due to its potential for clean energy harvesting from salinity gradients. The complex interactions between mixed-mode channel flows and osmotic fluxes in real PRO membrane modules necessitate high-fidelity modeling approaches. In this work, an efficient CFD framework is developed for the 3D simulation of osmotically driven membrane processes. This approach is based on a two-way coupling between a CFD solver, which captures external concentration polarization (ECP) effects, and an analytical representation of internal concentration polarization (ICP). Consequently, the osmotic water flux and reverse salt flux (RSF) can be accurately determined, accounting for all CP effects without any limitations on the geometrical complexity of the membrane chamber or its flow mode/regime. The proposed model is validated against experimental data, showing good agreement across various PRO case studies. Additionally, the model's flexibility to simulate other types of osmotically driven processes such as forward osmosis (FO) is examined. Thus, the contributions of ECP and ICP effects in local osmotic pressure drop along the membrane chamber are comprehensively compared for FO and PRO modes. Finally, the capability of the CFD model to simulate a lab-scale PRO module is demonstrated across a range of Reynolds numbers from low-speed laminar up to turbulent flow regimes.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 11","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596533/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142730191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing the Separation Performance of Chitosan Membranes Through the Blending with Deep Eutectic Solvents for the Pervaporation of Polar/Non-Polar Organic Mixtures. 在极性/非极性有机混合物的渗透蒸发中通过与深共晶溶剂混合提高壳聚糖膜的分离性能

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-11 DOI: 10.3390/membranes14110237

Francesco Galiano, Asma Msahel, Francesca Russo, Natalia Rovella, Alfonso Policicchio, Sofiane Ben Hamouda, Amor Hafiane, Roberto Castro-Muñoz, Alberto Figoli

{"title":"Enhancing the Separation Performance of Chitosan Membranes Through the Blending with Deep Eutectic Solvents for the Pervaporation of Polar/Non-Polar Organic Mixtures.","authors":"Francesco Galiano, Asma Msahel, Francesca Russo, Natalia Rovella, Alfonso Policicchio, Sofiane Ben Hamouda, Amor Hafiane, Roberto Castro-Muñoz, Alberto Figoli","doi":"10.3390/membranes14110237","DOIUrl":"10.3390/membranes14110237","url":null,"abstract":"This study explores the development of chitosan-based membranes blended with three distinct deep eutectic solvents (DESs) for the pervaporation separation of methanol and methyl tert-butyl ether. DESs were selected for their eco-friendly properties and their potential to enhance membrane performance. The chitosan (CS) membranes, both crosslinked and non-crosslinked, were characterized in terms of morphology, chemical composition, wettability, mechanical resistance, and solvent uptake. Pervaporation tests revealed that incorporating DESs significantly enhanced the membranes' selective permeability toward methanol, with up to a threefold increase in separation efficiency compared to pristine CS membranes. The membranes demonstrated a strong dependence on feed temperature, with higher temperatures improving permeation flux but reducing separation factor. Crosslinking with glutaraldehyde further increased membrane selectivity by reducing free volume into the polymer matrix. These findings underscore the potential of DESs as green additives for improving the performance of biopolymer membranes, making them promising candidates for efficient and eco-friendly organic-organic separations.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 11","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596667/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142730216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Combined Effects of Surface Roughness, Solubility Parameters, and Hydrophilicity on Biofouling of Reverse Osmosis Membranes. 表面粗糙度、溶解度参数和亲水性对反渗透膜生物污染的综合影响

IF 3.3 4区工程技术

Membranes Pub Date : 2024-11-08 DOI: 10.3390/membranes14110235

Neveen AlQasas, Daniel Johnson

{"title":"Combined Effects of Surface Roughness, Solubility Parameters, and Hydrophilicity on Biofouling of Reverse Osmosis Membranes.","authors":"Neveen AlQasas, Daniel Johnson","doi":"10.3390/membranes14110235","DOIUrl":"10.3390/membranes14110235","url":null,"abstract":"The fouling of protein on the surface of reverse osmosis (RO) membranes is a surface phenomenon strongly dependent on the physical and chemical characteristics of both the membrane surface and the foulant molecule. Much of the focus on fouling mitigation is on the synthesis of more hydrophilic membrane materials. However, hydrophilicity is only one of several factors affecting foulant attachment. A more systematic and rationalized methodology is needed to screen the membrane materials for the synthesis of fouling-resistant materials, which will ensure the prevention of the accumulation of foulants on the membrane surfaces, avoiding the trial and error methodology used in most membrane synthesis in the literature. If a clear correlation is found between various membrane surface properties, in combination or singly, and the amount of fouling, this will facilitate the establishment of a systematic strategy of screening materials and enhance the selection of membrane materials and therefore will reflect on the efficiency of the membrane process. In this work, eight commercial reverse osmosis membranes were tested for bovine serum albumin (BSA) protein fouling. The work here focused on three surface membrane properties: the surface roughness, the water contact angle (hydrophilicity), and finally the Hansen solubility parameter (HSP) distance between the foulant understudy (BSA protein) and the membrane surface. The HSP distance was investigated as it represented the affinities of materials to each other, and therefore, it was believed to have an important contribution to the tendency of foulant to stick to the surface of the membrane. The results showed that the surface roughness and the HSP distance contributed to membrane fouling more than the hydrophilicity. We recommend taking into account the HSP distance between the membrane material and foulants when selecting membrane materials.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 11","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596770/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142730186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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