Journal of Membrane Science最新文献

{"title":"Hydrophilic MoS2-Interlayered ceramic supports for high-flux polyamide nanofiltration membranes","authors":"Wen-Hai Zhang ,&nbsp;Yan Wang ,&nbsp;Xinao Tian ,&nbsp;Yue Liu ,&nbsp;Zhenping Qin ,&nbsp;Hong Meng ,&nbsp;Hongxia Guo","doi":"10.1016/j.memsci.2025.124359","DOIUrl":"10.1016/j.memsci.2025.124359","url":null,"abstract":"<div><div>The polyamide/ceramic composite nanofiltration membrane has attracted significant research attention due to its combined advantages of excellent mechanical stability from inorganic substrates and superior separation performance from polyamide layers. Nevertheless, there are still technical challenges in performing direct interfacial polymerization on porous ceramic membranes. To address these limitations, this work developed a novel approach using HP-β-CD as a growth modulator for the <em>in-situ</em> synthesis of hydrophilic MoS₂ on tubular ceramic substrates, creating a MoS₂/ceramic intermediate layer. Subsequently, a high-performance polyamide nanofiltration membrane was fabricated via interface polymerization on the MoS₂/ceramic substrate. By systematically optimizing the HP-β-CD concentration in both the precursor solution and aqueous monomer phase, we achieved precise control over both the growth of MoS₂ nanosheets on the tubular ceramic substrate and the polyamide layer structure, enabling tunable nanofiltration performance. The resulting PA/M − 3 NF membrane exhibited excellent nanofiltration performance, with high water permeance (23.8 LMH/bar), exceptional Na₂SO₄ rejection (97.8 %), and remarkable long-term stability and pressure resistance.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124359"},"PeriodicalIF":8.4,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single pass tangential flow filtration (SPTFF) for concentration and purification of AAV clarified cell lysate","authors":"Akshay S. Chaubal ,&nbsp;Christopher J. Yehl ,&nbsp;Mohammad A. Afzal ,&nbsp;Lu Wang ,&nbsp;Andrew L. Zydney","doi":"10.1016/j.memsci.2025.124362","DOIUrl":"10.1016/j.memsci.2025.124362","url":null,"abstract":"<div><div>The rapid development of adeno-associated viral vectors (AAV) to treat genetic disease has placed increased emphasis on the design of efficient downstream manufacturing processes. This study investigated the potential of using single pass tangential flow filtration (SPTFF) as a novel means of concentrating and purifying AAV clarified cell lysate (CCL). AAV stability studies revealed the shear-sensitive nature of the AAV capsids, with evidence of aggregation and fragmentation following repeated passages through a peristaltic pump (as would occur during batch ultrafiltration). SPTFF experiments focused on first identifying the membrane(s) that permitted high yield of AAV (negligible sieving into the permeate) along with substantial host cell protein (HCP) removal. Experiments were then performed at various permeate fluxes, which revealed that stable SPTFF processes can be achieved by operating below a critical flux for fouling (J_foul). 300 kDa regenerated cellulose (RC) membranes were identified as optimal for this application, given their ability to provide complete AAV retention with high removal of HCP (&gt;90 %) when operated below J_foul. The critical flux during SPTFF was increased by preconditioning the CCL through a positively-charged adsorptive filter, which reduced the concentration of foulants prior to SPTFF. These studies provide the first demonstration of SPTFF for the concentration and purification of AAV clarified cell lysate while minimizing shear exposure.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124362"},"PeriodicalIF":8.4,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial polymerization of poly(quaternary ammonium) membranes with extreme acid stability for phosphorus recovery from phosphogypsum leachate","authors":"Yimeng Shi ,&nbsp;Wenmu Feng ,&nbsp;Jing Wang ,&nbsp;Ziwen Dai ,&nbsp;Dongpu Hu ,&nbsp;Wuqi Cai ,&nbsp;He Wen ,&nbsp;Wenbo Yu ,&nbsp;Sha Liang ,&nbsp;Jiakuan Yang ,&nbsp;Shushan Yuan","doi":"10.1016/j.memsci.2025.124370","DOIUrl":"10.1016/j.memsci.2025.124370","url":null,"abstract":"<div><div>Phosphogypsum leachate, a phosphorus-rich wastewater, poses significant threats to aquatic ecosystems. Nanofiltration represents a promising approach for phosphorus recovery from such leachate by selectively allowing phosphorus permeation while rejecting multivalent cations. However, the widespread application of conventional polyamide nanofiltration membranes in phosphogypsum leachate treatment is constrained by their poor acid stability. Herein, To address this limitation, an acid-resistant, highly positively charged nanofiltration membrane was fabricated by synthesizing a crosslinked poly(quaternary ammonium) selective layer on a polysulfone support via a temperature-regulated interfacial polymerization between N,N,N′,N″,N″-pentamethyldiethylenetriamine (PMDTA) and 1,3,5-Tris(bromomethyl)benzene (TBB). Remarkably, elevating reaction temperature not only enables the formation of an ultrathin selective layer (30 nm) with dense cross-linking (MWCO = 471 Da) but also achieves rapid synthesis within 2 min. The poly(quaternary ammonium) membranes achieved a high MgCl₂ rejection (97.17 %) and a high P permeation (88.16 %) owing to the exceptionally strong positive charge provided by quaternary ammonium groups. Moreover, the “C–N⁺” bonds within the poly(quaternary ammonium) structure contribute to exceptional acid stability. The membranes remain stable after prolonged immersion in 1.5 M H₂SO₄ for 40 days (MgCl₂ rejection &gt;95 %). This breakthrough combination of ultrafast reaction, high cation selectivity and outstanding acid stability positions the poly(quaternary ammonium) membrane as a highly viable candidate for phosphogypsum leachate treatment applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124370"},"PeriodicalIF":8.4,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micro-nano bubbles enhance the Fe(II)/persulfate process for ultrafiltration membrane fouling control: Performance and mechanisms","authors":"Bing Zhang ,&nbsp;Qiuhua Chen ,&nbsp;Heli Tang ,&nbsp;Rongqing Qi ,&nbsp;Wenxin Shi","doi":"10.1016/j.memsci.2025.124371","DOIUrl":"10.1016/j.memsci.2025.124371","url":null,"abstract":"<div><div>The persistent challenges of membrane fouling and insufficient removal of emerging pollutants remain significant barriers to the widespread adoption of ultrafiltration processes. Therefore, a pre-oxidation system combining Fe(II)-activated persulfate with micro-nano bubble enhancement (MBs/Fe(II)/PS) was developed to alleviate membrane fouling and efficiently remove acetochlor (AC). The results demonstrated that, under conditions where Fe(II) and persulfate (PS) were applied at concentrations of 15 μM and 30 μM respectively, the MBs/Fe(II)/PS pre-oxidation system outperformed the Fe(II)/PS pre-oxidation system in mitigating both reversible and irreversible membrane fouling caused by natural organic matter (NOM) mixture. The superior fouling mitigation capabilities of the MBs/Fe(II)/PS system can be primarily attributed to the coagulation effect of in-situ generated Fe(III) and the oxidation mechanisms involving free radicals. Furthermore, the MBs/Fe(II)/PS pre-oxidation process effectively reduced foulant accumulation on the membrane surface while decreasing interfacial free energy between foulants and the membrane. This transition facilitated a shift from cake filtration to complete blocking or intermediate blocking modes. Additionally, the MBs/Fe(II)/PS pre-oxidation system exhibited optimal performance in degrading NOM and AC due to the presence of SO₄^•–, •OH, and ¹O₂. This study introduces a novel pre-oxidation strategy for mitigating membrane fouling and eliminating emerging pollutants, providing a theoretical basis for the practical application of MBs-based pre-oxidation technology.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124371"},"PeriodicalIF":8.4,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulating biofiltration and predation to trigger gravity-driven membrane System: Biofilm transformation and membrane efficiency","authors":"Caihong Liu ,&nbsp;Jingjun Bo ,&nbsp;Zhen Tao ,&nbsp;Jingmei Yao ,&nbsp;Haiqing Chang ,&nbsp;Qianliang Liu ,&nbsp;Xiaoqing Zhao ,&nbsp;Qiang He","doi":"10.1016/j.memsci.2025.124364","DOIUrl":"10.1016/j.memsci.2025.124364","url":null,"abstract":"<div><div>The gravity-driven membrane (GDM) system provides decentralized water treatment by utilizing the formation of a biofilm to sustain stable flux. Our study systematically investigated the individual and combined effects of biofiltration (powdered activated carbon, PAC) and predation (oligochaete T. Tubifex) in GDM systems through four groups: PES, PES@TT, PES/PAC and combined PES/PAC@TT, revealing novel insights into biofilm system optimization. Compared with the pristine PES group (UV₂₅₄: 3.87%; TOC: 32.37%), T. Tubifex alone increased stable flux by 20.35% and improved removal efficacy (UV₂₅₄: 33.04%; TOC: 42.26%), marking the first demonstration of its viability as a bio-tool in GDM systems. Its unique “upward mover” behavior (tail-up, head-down) enhanced biofilm porosity and eukaryotic predation through bio-irrigation and bioturbation, effectively balancing flux stability with water quality. Similarly, PAC pre-deposition alone enhanced flux by 45.93% and achieved superior pollutant removal (UV₂₅₄: 89.94%; TOC: 60.86%) by fostering microbial enrichment and biofilm heterogeneity. By pre-depositing PAC to establish a mature biofouling layer and subsequently introducing T. Tubifex, we demonstrated that sequential application maintained high pollutant removal (UV₂₅₄: 84.13%; TOC: 50.16%). However, the physical presence of the PAC restricted predator movement and predation, causing late-stage mortality and biofilm densification, which reduced stable flux by 10%. Our findings demonstrate that adsorbents and non-native predators can regulate biofouling layer composition and structure, enhancing both flux and water treatment efficiency. By linking biofiltration and predation to biofilm dynamics, optimization of predator-absorber pairing and operational sequence to take advantage of ecological synergies, offers actionable insights for scalable water treatment solutions.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124364"},"PeriodicalIF":8.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning polyelectrolyte topology and crosslinking parameters to facilitate same-sized monovalent nutrient ions separation","authors":"Km Prottoy Shariar Piash ,&nbsp;Paola Perez-Vega ,&nbsp;Poulami Datta ,&nbsp;Grace Neller ,&nbsp;Ta Nhat Min Luong ,&nbsp;Lian-Shin Lin ,&nbsp;Oishi Sanyal","doi":"10.1016/j.memsci.2025.124366","DOIUrl":"10.1016/j.memsci.2025.124366","url":null,"abstract":"&lt;div&gt;&lt;div&gt;This work focuses on developing a novel nanofiltration membrane platform for separating two same sized monovalent nutrient ions – NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; and K&lt;sup&gt;+&lt;/sup&gt; under neutral pH condition. NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; and K&lt;sup&gt;+&lt;/sup&gt; are two critical fertilizer raw materials and achieving selective separation between them would offer the flexibility to tune the nutrient (N:K) ratio, enabling a final product suitable for diverse fertilizer applications. Separation of NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; and K&lt;sup&gt;+&lt;/sup&gt; is intrinsically challenging, since the hydrated radii of both NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; and K&lt;sup&gt;+&lt;/sup&gt; are identical (0.33 nm) with slight difference in hydration energy (∼10 kJ/mol) between them. In this work, a series of polyelectrolyte modified membranes based on linear and branched polyelectrolytes and crosslinked using different crosslinking parameters (e.g. crosslinker type and concentration, duration of crosslinking etc.) were developed and tested. These membranes showed a broad range of NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;/K&lt;sup&gt;+&lt;/sup&gt; separation performance in terms of NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; permeance and NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;/K&lt;sup&gt;+&lt;/sup&gt; selectivity, depending on an ion desolvation based separation mechanism. A novel hybrid polyelectrolyte combination consisting of a 1:1 weight ratio of linear (poly allylamine hydrochloride, (PAH) and a branched polyethyleneimine (,PEI)) polycation was further investigated. This configuration, when combined with a polyanion (polyacrylic acid or, PAA) into a 5.5 bilayered uncrosslinked system showed the highest NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; passage (i.e. lowest NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; rejection ∼10 %) among all polyelectrolyte systems. The hybrid PAH:PEI configuration when simply deposited as a single layer (without PAA) on the NF 270 membrane and crosslinked with Glutaraldehyde (GA), showed the highest NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;/K&lt;sup&gt;+&lt;/sup&gt; selectivity (&gt;2.5) among all systems. A careful analysis of these various systems indicate that the topologies of the polyelectrolytes (e.g. linear &lt;em&gt;vs.&lt;/em&gt; branched polycation and molecular weights) play a pivotal role in the overall NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;/K&lt;sup&gt;+&lt;/sup&gt; separation performance, in conjunction with other important factors such as crosslinking density, polyelectrolyte molecular weight, etc. The best performing 1-layered crosslinked hybrid polyelectrolyte system was also tested with a quaternary ion mixture consisting of 4 similar-sized monovalent ions (Li&lt;sup&gt;+&lt;/sup&gt;, Na&lt;sup&gt;+&lt;/sup&gt;, NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; and K&lt;sup&gt;+&lt;/sup&gt;). A desolvation based phenomenon, which is aided by the creation of confinement domains by branched polyelectrolytes and polyelectrolyte crosslinking, has been hypothesized to be the primary separation mechanism for the same-sized NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; and K&lt;sup&gt;+&lt;/sup&gt; ions. This study therefore presents a fundamental framework for designing nanofiltration membranes through","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124366"},"PeriodicalIF":8.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning properties of PEO-functionalized ion-solvating blend membranes via PEO side chain length: Impact on alkaline water electrolysis performance","authors":"Sara Gjoshi ,&nbsp;Charalampos Anastasopoulos ,&nbsp;Kamal Ghotia ,&nbsp;Davide Grilli ,&nbsp;Franz Egert ,&nbsp;Syed Asif Ansar ,&nbsp;Fatemeh Razmjooei ,&nbsp;Valadoula Deimede","doi":"10.1016/j.memsci.2025.124368","DOIUrl":"10.1016/j.memsci.2025.124368","url":null,"abstract":"<div><div>Ion-solvating membranes (ISMs) based on chemical stable polyoxindole copolymers bearing long side PEO groups (MW750) were synthesized via a PEO-functionalization monomer strategy followed by super acid polyhydroxyalkylation. The synthesized copolymer membranes displayed very high electrolyte uptakes even at low KOH concentrations (10 wt%) due to deprotonation of oxindole groups enabling high KOH absorption. However, the increased plasticization resulted in deterioration of mechanical strength and the copolymers were therefore blended with <em>m-</em>PBI to yield mechanical robust, nanophase separated ISMs. Their physicochemical properties were tuned by adjusting the blend composition. The prepared blend membranes showed high KOH and water absorption in 30 wt% KOH concentration even higher than that of pure <em>m</em>-PBI. The presence of long hydrophilic side PEO chains facilitates both KOH and water uptake due to increased free volume and induced phase separation. This in turn resulted in high ionic conductivity exceeding 100 mS cm⁻¹ at 80 °C. Long term stability in 30 wt% KOH at 80 °C for blend PBI80/P(IB-PEO₇₅₀) was excellent: the conductivity remained unchanged (at room temperature), the thermal stability was improved, while the membrane retained its flexibility and the tensile strength and Young's modulus remained high after the 2 months (1440 h) test. The excellent alkaline stability was attributed to the stabilization of blend membranes via strong attractive electrostatic interactions between <em>m-</em>PBI's imidazolide and isatin or PEO groups with K⁺. The blend PBI80/P(IB-PEO₇₅₀) was evaluated under alkaline electrolysis conditions using a 30 wt% KOH feed solution at 80 °C. It exhibited a high current density of 1.06 A cm⁻² at 1.8 V. In comparison, the corresponding blend with short PEO groups PBI80/P(IB-PEO₃₅₀) showed higher current density of 1.36 A cm⁻² at the same voltage, which is comparable to the excellent performance of <em>m-</em>PBI. Long-term durability tests revealed that the cell with PBI80/P(IB-PEO₇₅₀) membrane successfully run for 250 h at 80 °C under a constant current density of 0.5 A cm⁻², in contrast to the cell with PBI80/P(IB-PEO₃₅₀) membrane, which failed after 160 h, showing its applicability in harsh alkaline AWE conditions. In addition, the H₂ in O₂ content for both cells with different blend membranes was low, in the range of 1.4–1.65 vol%, indicating low gas impurities for both cells. This work provides a simple blending strategy for designing chemically stable, with promising performance membranes for alkaline water electrolysis.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124368"},"PeriodicalIF":8.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Semifluorinated polymer membranes by ring-opening metathesis polymerization during spin coating","authors":"Tyler D. Oddo ,&nbsp;Arun Srikanth ,&nbsp;Zane J. Parkerson ,&nbsp;Matthew P. Vasuta ,&nbsp;Co D. Quach ,&nbsp;Clare McCabe ,&nbsp;G. Kane Jennings","doi":"10.1016/j.memsci.2025.124367","DOIUrl":"10.1016/j.memsci.2025.124367","url":null,"abstract":"<div><div>Membrane technologies can offer dramatically higher energy efficiency than thermally driven separations such as distillation. The fabrication of robust, solvent-stable active layers on inexpensive supports is essential for the widespread utilization of this technology by industry. Here we show that polymer membranes incorporating a perfluoroalkyl side chain onto a hydrocarbon backbone provide remarkable enhancements in performance and stability in the dehydration of ethanol by pervaporation, even surpassing commercial perfluoropolymers. To rapidly generate these robust thin film composite membranes, we use a method termed spin coating ring-opening metathesis polymerization (scROMP) that combines the polymerization and deposition of the membrane selective layer into a 2-min process with under 1 mL of solvent per 36 cm² of polymer. Here, the scROMP of 5-(perfluoro-<em>n</em>-alkyl)norbornenes (NBFn) with perfluoroalkyl side chain lengths (n) of 4, 6, 8, and 10 is used to generate semifluorinated films on polyacrylonitrile (PAN) supports. pNBFn membranes exhibit greater solvent stability than their nonfluorinated polynorbornene (pNB; n = 0) counterpart while retaining excellent thermal stability, as evidenced by reduced swelling in polar and nonpolar solvents and &lt;1 % mass loss in thermogravimetric analysis up to 130 °C. Molecular simulations show that the fluorocarbon side chains orient parallel to the surface in the bulk but more normal to the surface at the interface, consistent with experimental IR spectroscopy and wetting measurements. Of the polymers studied, pNBF8 shows the greatest performance in ethanol dehydration, obtaining a selectivity of 180 and a water permeance of 1000 GPU, while sustaining high performance for &gt;40 h of continuous operation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124367"},"PeriodicalIF":8.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancing membrane carbon capture in liquefied natural gas-fueled ships via upper bound theory and multi-objective optimization for CO2/O2 separation","authors":"Abduljelil W. Sabir ,&nbsp;Juyoung Oh ,&nbsp;PyungSoo Lee ,&nbsp;Youngsub Lim","doi":"10.1016/j.memsci.2025.124361","DOIUrl":"10.1016/j.memsci.2025.124361","url":null,"abstract":"<div><div>The commitment of the shipping industry to reduce greenhouse gas emissions has spurred interest in onboard carbon capture solutions for liquefied natural gas (LNG)-fueled ships, which generate exhaust with low CO₂ and high O₂ contents. Membrane-based carbon capture is a promising alternative to bulky amine scrubbing. However, the critical challenge of CO₂/O₂ separation in O₂-rich exhaust has been largely overlooked in prior studies. Herein, we leveraged the upper bound theory to evaluate the performance of advanced membrane materials for a CO₂/O₂ gas pair, thus integrating this into a multi-objective optimization framework for system design. New CO₂/O₂ upper bound correlations were derived from established CO₂/N₂ and O₂/N₂ relationships to define several performance scenarios for next-generation membranes. Pareto optimization was then applied to identify the optimal trade-offs between the specific energy consumption (SEC) and membrane area. The results demonstrated a clear SEC–area trade-off: achieving an ultralow SEC required large membrane areas, whereas smaller membrane systems incurred higher SEC. Improving CO₂/O₂ selectivity emerged as a pivotal factor. In an upper bound analysis, membranes approaching to the current CO₂/O₂ performance limits achieved SEC values of approximately 3.5 GJ/ton LCO₂. Only a highly selective hypothetical membrane (CO₂/O₂ selectivity ≈ 20, roughly double of the current values) reduced the SEC to &lt;3.15 GJ/ton. This performance surpassed that of the conventional amine-based capture systems and met stringent energy targets. These findings underscore the novelty of combining upper bound material insights with process optimization. We identified specific membrane performance targets required for efficient shipboard CO₂ capture to guide future membrane development for maritime carbon capture applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124361"},"PeriodicalIF":8.4,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel hierarchical catalytic ceramic membrane for removal of sulfamethoxazole by peroxymonosulfate in complex water matrices: the advantages of the membrane-based oxidative degradation system","authors":"Chao Han ,&nbsp;Jin Wang ,&nbsp;Boru Gao ,&nbsp;Mengmeng Dou ,&nbsp;Xiaoyue Wang ,&nbsp;Qingyun Zhang ,&nbsp;Yufei Yan ,&nbsp;Guangxu Zhang ,&nbsp;Kaibo Wang","doi":"10.1016/j.memsci.2025.124363","DOIUrl":"10.1016/j.memsci.2025.124363","url":null,"abstract":"<div><div>Peroxymonosulfate (PMS)-based advanced oxidation process (PMS-AOP) is a promising technology for water decontamination. However, the application of PMS-AOP is limited due to the susceptibility of traditional batch reaction systems to impurity interference and low mass transfer efficiency, which makes the membrane-based catalytic system an excellent alternative. In this study, a hierarchical catalytic ceramic membrane coupled PMS-AOP system was constructed. In the membrane-based catalytic system, the directional flow carrying the reactants accelerated the contact between the PMS and the catalytic components, the spatial confinement effect shortened the mass-transfer distance between the reactants, and the tortuous structure ensured the sufficiency of the catalytic reaction. The system achieved a high degradation efficiency of 85 % for sulfamethoxazole (SMX) in a continuous degradation reactor with a flow rate of 79.4 Lm⁻²h⁻¹, while demonstrating high customizability, broad spectrum and environmental tolerance. Furthermore, the selectivity of the system was improved by the addition of a separating layer to isolate interfering substances, resulting in SMX degradation efficiencies of &gt;80 % in both humic acid solution and actual wastewater, while also achieving total organic carbon (TOC) removal rates of &gt;70 %. Finally, the possible degradation pathways of SMX were proposed through theoretical calculations, revealing the hierarchical catalytic ceramic membrane coupled SR-AOP system holds significant promise for treating micropollutants in complex aqueous matrices, thereby reducing their environmental toxicity.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"733 ","pages":"Article 124363"},"PeriodicalIF":8.4,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}