Separation and Purification Technology最新文献

{"title":"Biocompatible Cyclodextrin-based metal-organic frameworks for atmospheric water harvesting","authors":"Jiabao Gui,&nbsp;Hui Kang,&nbsp;Lifei Yin,&nbsp;Shuo Yang,&nbsp;Meng Wang,&nbsp;Yang Chen,&nbsp;Jinping Li,&nbsp;Libo Li","doi":"10.1016/j.seppur.2026.137180","DOIUrl":"10.1016/j.seppur.2026.137180","url":null,"abstract":"<div><div>Water scarcity in arid regions has become an urgent global challenge, highlighting the need for efficient freshwater production technologies. Sorption-based atmospheric water harvesting (SAWH) offers a promising approach, with its core relying on high-performance sorbents and practical device design. Among various candidates, metal-organic frameworks (MOFs) attracted considerable attention, but biocompatibility is essential for drinking water collection. This requirement motivates the investigation of cyclodextrin-based MOFs (CD-MOFs), which feature green synthesis, non-toxicity, and even digestibility. Herein, three CD-MOFs (α-CD-Na, β-CD-K, and γ-CD-K) were synthesized and systematically evaluated, revealing β-CD-K as the most promising SAWH sorbent. It exhibits an almost S-shaped water sorption isotherm, relatively high water uptake, robust structural stability, and the potential for scalable preparation. We further investigated its water adsorption mechanism and identified optimal operating conditions. Finally, a portable, sunlight-driven SAWH device was designed to harvest freshwater under real outdoor conditions. Under identical conditions, β-CD-K produced 12.5 mL of water, equal to 0.47 L·kg⁻¹ per day. This offers valuable insights for the design of portable water collection devices.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137180"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146158","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":"Synthesis of La-doped Mg-Al layered double oxide for selective tellurite adsorption","authors":"Liang Jiang ,&nbsp;Qiuyi Wang ,&nbsp;Shuang Li ,&nbsp;Dong Wang ,&nbsp;Yaoyao Tang ,&nbsp;Jiahao Luo ,&nbsp;Jun Liao ,&nbsp;Congcong Ding ,&nbsp;Lielin Wang ,&nbsp;Mei Tang ,&nbsp;Xiaoan Li ,&nbsp;Mingsong Shi","doi":"10.1016/j.seppur.2026.137186","DOIUrl":"10.1016/j.seppur.2026.137186","url":null,"abstract":"<div><div>Polonium was a highly toxic and radioactive nuclide commonly detected in wastewater from spent fuel reprocessing and lead‑bismuth-cooled reactor systems, making its removal essential for nuclear safety. In this work, lanthanum-modified magnesium‑aluminum layered double oxide (La-MgAl-LDO) was prepared by doping La(III) in Mg-Al layered double oxide (Mg-Al-LDO). Additionally, tellurium, which has similar chemical properties, was used as a substitute for polonium to investigate the adsorption performance. Under the optimized conditions (pH = 6, m/V = 0.2 g/L, and C₀ = 20 mg/L), La-MgAl-LDO achieved a maximum removal efficiency of 99% for tellurite. The adsorption of Te(IV) onto La-MgAl-LDO followed the pseudo-second-order and Freundlich models, indicating that the adsorption process was characterized by multilayer chemical adsorption. The Te(IV) adsorption mechanisms mainly include co-precipitation and surface complexation. In addition, the study confirmed that La³⁺ reacted with Te(IV) to form a stable solid precipitate (La₂Te₆O₁₅), which played a crucial role in the removal of Te(IV) from aqueous solution.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137186"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146174","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":"Electrochemical lithium extraction from alkaline brine using carbon-coated LiFePO4: degradation mechanism and stability enhancement","authors":"Haigang Huang ,&nbsp;Dongfu Liu ,&nbsp;Tianyu Zhao ,&nbsp;Siqi Zhou ,&nbsp;Wenhua Xu ,&nbsp;Zhongwei Zhao","doi":"10.1016/j.seppur.2026.137187","DOIUrl":"10.1016/j.seppur.2026.137187","url":null,"abstract":"<div><div>Electrochemical Deintercalation/Intercalation method is a highly efficient technique for extracting lithium from salt lake brines that has received significant attention. However, the stability of LiFePO₄ in alkaline solution limits its application in lithium extraction from carbonate-type salt lakes. In this work, the electrochemical behavior of LiFePO₄ in aqueous solution was analyzed, and the degradation mechanism of LiFePO₄ in alkaline brine was revealed. Based on this, the effects of carbon coatings on the lithium extraction performance of LiFePO₄ in alkaline brine were investigated. The results indicate that in alkaline brine, after 40 cycles, the capacity retention of LFP@C-3 showed an 18% enhancement compared to LFP@C-1. This study provides new insights for enhancing the electrochemical performance of LiFePO₄ in alkaline solutions, while also offering technical support for developing complex lithium resources in high-altitude regions.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137187"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153693","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":"Accuracy and limitations of constant salt rejection assumption in brackish water RO membranes modeling: CFD and experimental validation","authors":"Mehrad Tajik,&nbsp;Alireza Hamidi,&nbsp;Alireza Jalali","doi":"10.1016/j.seppur.2026.136856","DOIUrl":"10.1016/j.seppur.2026.136856","url":null,"abstract":"<div><div>Reverse osmosis (RO) is the leading desalination method due to its high removal efficiency and low energy demand. Numerical simulations are widely used to study RO processes; however, the complexity of membrane transport modeling has led many studies to treat salt rejection, <span><math><mrow><mi>Rej</mi></mrow></math></span>, as an intrinsic membrane property and to neglect membrane salt permeability. This study experimentally and numerically assessed that assumption for brackish water RO (BWRO) membranes using a bench-scale cross-flow test cell. Water and salt permeabilities, <em>A</em> and <em>B</em>, were determined and measurement uncertainty were quantified. <em>A</em> remained stable across operating conditions, while the apparent variability in <em>B</em> was statistically consistent with experimental uncertainty. Two numerical models were evaluated against the experimental data. Model 1 incorporates the full solution–diffusion mechanism for membrane transport, while Model 2 assumes <span><math><mrow><mi>Rej</mi></mrow></math></span> is an intrinsic membrane property. Both models predict water flux and concentration polarization accurately. However, for permeate concentration, <span><math><mrow><msub><mi>C</mi><mi>p</mi></msub></mrow></math></span>, Model 2 under constant <span><math><mrow><mi>Rej</mi></mrow></math></span> assumption showed large deviations, with a maximum error of 216.25% and an average error of 61.06%, while Model 1 with constant <em>B</em> assumption reduced these errors to 18.68% and 10.1%, respectively. Using the validated numerical model, a parametric study on three commercial membranes under various BWRO operating conditions shows that <em>Rej</em> is strongly influenced by membrane characteristics, feed salinity, and pressure. For each membrane, <span><math><mrow><mi>Rej</mi></mrow></math></span> increases with feed concentration and pressure. At practical operating conditions, the range of <span><math><mrow><mi>Rej</mi></mrow></math></span> variability is limited; however, even small deviations in <span><math><mrow><mi>Rej</mi></mrow></math></span> at high feed concentration substantially affect permeate concentration <span><math><mrow><msub><mi>C</mi><mi>p</mi></msub></mrow></math></span>.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"391 ","pages":"Article 136856"},"PeriodicalIF":9.0,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145968992","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":"Performance of MOF-containing active layer and HOF-based support layer of ultrafiltration membrane for nanoplastics removal from secondary effluent","authors":"Thuhin Kumar Dey,&nbsp;Linhua Fan,&nbsp;Muhammed Bhuiyan,&nbsp;Biplob Kumar Pramanik","doi":"10.1016/j.seppur.2026.137023","DOIUrl":"10.1016/j.seppur.2026.137023","url":null,"abstract":"<div><div>Nanoplastics (NPs) are an emerging environmental contaminant of global concern due to their persistence and harmful effects on aquatic ecosystems. A novel dual-modified ultrafiltration membrane was developed for enhanced removal of NPs from secondary effluent collected from three wastewater treatment plants. The membrane was engineered with MIL-101(Cr), a metal-organic framework, in the active layer and a hydrogen-bonded organic framework derived from 4,4′,4″,4‴-(pyrene-1,3,6,8-tetrayltetrakis(ethyne-2,1-diyl))tetrabenzoic acid in the substrate layer. This study further identified and quantified the presence of three specific NPs in the collected effluent: poly(methyl methacrylate), polyethylene terephthalate, and polyvinyl chloride. Initial identification was performed using nanoparticle tracking analysis, and subsequently verified by using UV–Vis spectroscopy at specific absorbance peaks. Crossflow filtration tests showed excellent performance, achieving a permeability of ∼1550 Lm⁻²h⁻¹bar⁻¹ and 97% NPs removal. This high efficiency arose from synergistic mechanisms of size-exclusion sieving, electrostatic repulsion, and the formation of a robust hydration layer that limited foulant adhesion. The membrane also exhibited excellent antifouling behaviour, maintaining a 97% flux recovery ratio after ten filtration cycles, while no chromium leaching was observed within pH 4–10, and 500–1500 ppm of NaOCl solution. These findings demonstrate the potential of dual-modified membranes as robust, high-efficiency filtration systems for long-term NPs removal in wastewater treatment plants.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"391 ","pages":"Article 137023"},"PeriodicalIF":9.0,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077123","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":"Modification of carbon nitride by pyrimidine incorporation and molten-salt crystallization engineering for efficient hydrogen peroxide production and antibiotic degradation","authors":"Yunhe Gong ,&nbsp;Ting Su ,&nbsp;Hongbin Yu ,&nbsp;Xinhong Wang ,&nbsp;Ying Lu ,&nbsp;Weichao Qin","doi":"10.1016/j.seppur.2026.137068","DOIUrl":"10.1016/j.seppur.2026.137068","url":null,"abstract":"<div><div>The photocatalytic water treatment technology has received widespread attention as an efficient and environmentally friendly approach for eliminating antibiotic pollutants in water environments. Polymeric carbon nitride (PCN) is a promising photocatalyst because of its good stability, low cost and facile synthesis. However, the intrinsic defects, such as slow carrier migration and fast recombination of electron-hole pairs, severely limit its practical applications. To improve these issues, a new modification strategy, namely pyrimidine incorporation and molten-salt crystallization engineering, was investigated to synthesize highly crystalline carbon nitride (Cry-TCN). Pyrimidine incorporation tailored the electronic structure by introducing π-conjugated asymmetry. Molten-salt crystallization promoted the formation of electron-withdrawing C<img>N groups and improved structural ordering. The dipole moment of Cry-TCN was thus enhanced, facilitating charge carrier separation and electron transport. DFT calculations revealed that the structural evolution markedly strengthened O₂ adsorption and reduced the energy barrier for H₂O₂ generation. The H₂O₂ production rate by Cry-TCN reached as high as 706.98 μmol·L⁻¹·h⁻¹. The yields of H₂O₂, •O₂⁻, and ¹O₂ by Cry-TCN were 46.27, 5.23 and 6.50 times higher than those by pristine PCN, respectively. Abundant active species enabled Cry-TCN to degrade ciprofloxacin efficiently. Cry-TCN exhibited excellent stability and adaptability in complex water environments. The result of life cycle assessment highlighted the superior environmental friendliness of Cry-TCN throughout its life cycle compared with PCN. This study promotes the development of PCN-based photocatalysts and their application in the photocatalytic water treatment technology.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"391 ","pages":"Article 137068"},"PeriodicalIF":9.0,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077198","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":"Machine learning–driven identification of key factors governing hormone adsorption by agrifood waste–derived adsorbents","authors":"Masud Parvez ,&nbsp;Ahasanul Karim ,&nbsp;Zarifeh Raji ,&nbsp;Isa Ebtehaj ,&nbsp;Hossein Bonakdari ,&nbsp;Seddik Khalloufi","doi":"10.1016/j.seppur.2026.137033","DOIUrl":"10.1016/j.seppur.2026.137033","url":null,"abstract":"<div><div>Hormone contamination in aquatic systems threatens human health and ecosystems, demanding efficient and sustainable separation strategies. This study aims to develop a machine learning (ML) framework to predict hormone adsorption using agrifood waste-derived adsorbents and to identify the key variables governing adsorption efficiency. A dataset of 604 observations with nine input variables was compiled from peer-reviewed studies. Three ensemble ML algorithms—Random Forest (RF), Least Squares Boosting, and M5 model trees—were evaluated across 511 models generated from all combinations of one to nine input variables. RF demonstrated the highest predictive accuracy, achieving a maximum test coefficient of determination (R²) of 0.976 and a minimum mean absolute error of 4.26 using eight input variables. Model robustness was assessed using a Combined Index (CI) integrating six statistical metrics, which decreased from a median value of 0.78 for single-input models to 0.0006 for the optimal eight-input configuration; the full nine-input model yielded CI = 0.0019. Bayesian optimization using the Expected Improvement per Second acquisition function further improved model performance, producing the highest test Nash–Sutcliffe efficiency (0.951) and the lowest normalized root mean square error (0.162) and ratio of root mean square error to standard deviation (0.221). Feature importance analysis identified initial concentration, contact time, pH, and adsorbent-to-solution ratio as the most influential predictors of adsorption efficiency. Hormone-specific analyses for 17β-estradiol (318 data points) and 17α-ethinylestradiol (106 data points) confirmed the robustness of these findings. The results show that optimized ML models support the design of sustainable adsorption-based hormone removal systems.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"391 ","pages":"Article 137033"},"PeriodicalIF":9.0,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077285","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":"Boosted performance of peroxymonosulfate-based Fenton-like reactions by employing CoMn2O4 encapsulated in carbon matrix as catalyst","authors":"Rui Yang ,&nbsp;Yizhou Feng ,&nbsp;Yunan Song ,&nbsp;Xianshu Zhou ,&nbsp;Weihuang Zhu","doi":"10.1016/j.seppur.2026.137027","DOIUrl":"10.1016/j.seppur.2026.137027","url":null,"abstract":"<div><div>Carbon matrix-encapsulated CoMn₂O₄ composite was prepared as an effectively peroxymonosulfate (PMS) activator. The prepared catalyst (2.0-C/CMO-700) achieved nearly 100% pollutant removal within 30 min in PMS-based Fenton-like reactions. The high catalytic performance and stability of 2.0-C/CMO-700 were attributed to the encapsulated reactive CoMn₂O₄ within the carbon matrix, low charge transfer resistance (R_ct) and enhanced redox transformation among different valence states of Mn and Co. Consequently, when 2.0-C/CMO-700 functioned as an electron electron-pool, efficient charge transfer to PMS or the target pollutant (TC) was promoted, resulting in high PMS activation efficiency toward pollutant removal. Quenching experiments showed the generated reactive species, including SO₄^⋅-, O₂^⋅-, ¹O₂ and OH^⋅, participated in the radical and non-radical pathways and played critical roles in pollutant degradation. Furthermore, the oxygen molecule actively contributed to the formation of reactive oxygen species (O₂^⋅- and ¹O₂), which was driven by the catalytic effect of 2.0-C/CMO-700. The presences of SO₄^⋅- and O₂^⋅- further enhanced the yield of ¹O₂ during PMS activation process. Density functional theory (DFT) calculations showed that the adsorption energy (E_ads) of PMS on the surfaces of catalyst, as well as the O<img>O bond length (l_O–O) and O<img>S bond length (l_O–S) in the adsorbed PMS molecule were all strengthened, which thereby facilitating more efficient generation of reactive oxygen species during PMS activation. This study proposed a green, sustainable approach for producing highly efficient and durable metal‑carbon composites to support environmental remediation.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"391 ","pages":"Article 137027"},"PeriodicalIF":9.0,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077283","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":"Activating the photocatalytic potential of insulator hydroxyapatite via oxygen vacancies and dual Schottky junctions for NIR-I/II synergistic water disinfection and purification","authors":"Caizhi Lv ,&nbsp;Hui Xin ,&nbsp;Hongbing Liao ,&nbsp;Lan Wu ,&nbsp;Xiandeng Hou","doi":"10.1016/j.seppur.2026.137103","DOIUrl":"10.1016/j.seppur.2026.137103","url":null,"abstract":"<div><div>The transformation of natural insulators into near-infrared (NIR)-responsive photocatalysts presented a fundamental challenge for sustainable water disinfection technologies. Herein, we demonstrated the activation of the insulator hydroxyapatite (HAp) through a synergistic strategy involving oxygen vacancies (OVs) and dual Schottky junctions. This approach extended the light absorption of the designed Ti₃C₂Tₓ/OV-HAp/graphitic carbon (T6HG) heterojunction to 1280 nm (NIR-II) and established dual directional charge-transfer channels, significantly enhancing carrier separation, as was evidenced by both experimental and theoretical analyses. As a result, the T6HG achieved exceptional disinfection efficacy, inactivating 99.92% (&gt;3.08-log) and 93.94% (&gt;1.22-log) of <em>S. aureus</em> under 808 nm and 1050 nm irradiation, respectively. The mechanism involved a virtuous cycle: Localized photothermal heating disrupted bacterial membranes, facilitated the infiltration of reactive oxygen species generated via Schottky-junction-driven electron transfer, culminated in lethal oxidative damage. This study provided proof of concept for activating inert minerals and demonstrated their robust antibacterial efficacy in both simulated interfering environments and authentic water matrices, highlighting their potential for practical solar-driven water purification</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"391 ","pages":"Article 137103"},"PeriodicalIF":9.0,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185854","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":"Influence of fiber microstructure on particle dynamic deposition and macroscopic filtration performance in nonwoven fiber filter media","authors":"Hao Jin ,&nbsp;Chenxuan Wang ,&nbsp;Gangcheng Peng ,&nbsp;Jiahua Chai ,&nbsp;Qiang Zhang ,&nbsp;Zhenyu Wu ,&nbsp;Xiaoyu Zhu ,&nbsp;Xuegang Wang ,&nbsp;Changgeng Gui ,&nbsp;Fan Geng ,&nbsp;Shihang Li","doi":"10.1016/j.seppur.2026.137143","DOIUrl":"10.1016/j.seppur.2026.137143","url":null,"abstract":"<div><div>Multilayer nonwoven fiber filter media are critical components in separation and purification processes for efficient fine particulate matter removal from airflow. However, there is a lack of in-depth understanding of how fiber microstructure dictates the dynamic evolution of particle deposition and, consequently, the macroscopic filtration performance. Understanding this mechanism is important for designing a new generation of filters characterized by high efficiency, low pressure drop, and prolonged lifespan. This paper investigates the influence of key structural parameters of fiber filter media, such as fiber packing density and fiber diameter, on particle deposition characteristics using the Discrete Element Method-Computational Fluid Dynamics (DEM-CFD) coupling simulation method. The results indicate that the timing of the dynamic transition from deep filtration to surface filtration of the filter media is regulated by the fiber microstructural parameters. Specifically, increasing fiber packing density or decreasing fiber diameter can improve filtration efficiency, but it lead to the concentration of deposited particles in the shallow filter media, resulting in a rapid increase in pressure drop and a decrease in quality factor. Conversely, reduced packing density and increased fiber diameters can facilitate particles penetrating deep into the filter media and achieving uniform deposition, thereby maintaining high filtration efficiency while delaying the increase in pressure drop and enhancing the quality factor, and extending the purification unit's service life. The research outcomes can offer theoretical guidance for the rational design, structural optimization, and performance enhancement of advanced nonwoven filter media.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"391 ","pages":"Article 137143"},"PeriodicalIF":9.0,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110312","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}