Separation and Purification Technology最新文献

{"title":"Rational design of hydrophobic MOFs for membrane-based C2H6-selective separation under high humidity condition","authors":"Zhengqing Zhang, Rongmei Han, Qi Han, Mengdi Zhao, Min Wang, Yuxiu Sun, Zhihua Qiao","doi":"10.1016/j.seppur.2025.133824","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133824","url":null,"abstract":"The development of ethane-selective permeation materials is essential for energy-efficient C₂H₆/C₂H₄ separation. However, designing high-performance C₂H₆-selective MOFs remains highly challenging, particularly when used under humid conditions. In this work, hydrophobic MOFs were initially identified using the Widom insertion method. Their features and separation properties calculated through molecular simulations were subsequently utilized as inputs for the development of machine learning (ML) models to identify the key factors that influence the performance of membrane-based C₂H₆/C₂H₄ separation. Based on ML insights, 11,973 hypothetical MOFs (hMOFs) were constructed, and 1229 hydrophobic hMOFs were further identified through a preliminary screening. The four high-performing hMOF membranes were further identified through precision screening, and hMOF-1 demonstrates effective C₂H₆/C₂H₄ separation under high humidity conditions, with performance comparable to that observed under dry conditions. Additionally, the gas separation mechanisms for high-performing hMOFs were also elucidated under both dry and humidity conditions. Consequently, the ML-guided design of hydrophobic MOF membranes demonstrates significant potential for membrane-based C₂H₆-selective separation, especially when considering the impact of humidity conditions on practical C₂H₆/C₂H₄ separation applications.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"36 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176827","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 self-respiring cathode weaken the competing reactions of electro-Fenton synergistic PMS-activated systems for activation of dual oxidants: Coupling system powers centralized active reaction zone of PFOA","authors":"Yunlin Li, Jing Jiang, Chaosheng Zhu, Yiran Xiao, Fangke Yu","doi":"10.1016/j.seppur.2025.133809","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133809","url":null,"abstract":"Herein, an iron-cobalt-nitrogen modified self-breathing cathode (FeCo-N@SBE) was prepared which was used in an electro-Fenton (EF) synergistic PMS activation system (E-FeCo-N@SBE-PMS) for selective degradation of PFOA. The synergistic system (E-FeCo-N@SBE-PMS) was able to degrade PFOA with an efficiency of 93.12 % within 150 min. A column of FeCo-N@SBE material was characterized. The results showed that some Fe-Nx, Co-Nx and metal sites were observed. The presence of these sites further weakened the competitive reaction between simultaneously activated H₂O₂ and PMS and improved the synergistic efficiency of the E-FeCo-N@SBE-PMS system. Specifically, the Fe-Nx sites were prone to adsorb H₂O₂, which induced O-O bond breaking and ·OH formation. The Co-Nx sites had higher adsorption energies for PMS. It was more inclined to adsorb and activate PMS than the Fe-Nx sites. Electron Paramagnetic Resonance (EPR) and burst experiments demonstrated that the main active species of the coupled system were hydroxyl radicals (·OH) and single-line oxygen (¹O₂), while sulfate radicals (SO₄^·-) and other Reactive Oxygen Species (ROS) played a secondary role. FeCo-N@SBE improved the force of ·OH with perfluoroalkyl radicals (PFOA·) by highly selective electrogeneration of H₂O₂ and its in situ activation to generate ·OH. It is worth noting that the deprotonation of the FeCo-N@SBE under the action of 2e^--ORR contributes to the conversion of SO₄^·- to ·OH, which further modulates the enrichment of PFOA· near the cathode. The bound PFOA· forms a concentrated reactive zone with ROS to accelerate the degradation of PFOA. These results provide new insights into the rational design of an E-FeCo-N@SBE-PMS system constructed with modified cathodes and provide new theoretical support for the selective degradation of PFOA.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"146 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176782","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":"In-situ synthesis of N-doped biochar from swine manure to activate peroxymonosulfate for efficient tetracycline degradation: The key role of electron transfer process","authors":"Fuhao Hu ,&nbsp;Tianqi Wang ,&nbsp;Ping Zhang ,&nbsp;Yan Hu ,&nbsp;Zhanli Chen ,&nbsp;Bo Zeng ,&nbsp;Fei Jiang ,&nbsp;Shaohua Zhang","doi":"10.1016/j.seppur.2025.133813","DOIUrl":"10.1016/j.seppur.2025.133813","url":null,"abstract":"<div><div>Improper disposal of livestock manure and organic pollution in aquatic environments pose significant global threats. Herein, we propose a sustainable strategy for swine manure (SM) management by converting it in-situ into nitrogen-doped biochar via one-step pyrolysis at 750 °C (NBC750). The NBC750/peroxymonosulfate (PMS) system efficiently degraded organic pollutants, achieving complete tetracycline (TC) degradation with a reaction rate constant (<em>k</em>_obs) of 0.33 min⁻¹, surpassing most previously reported waste-derived heterogeneous catalytic systems. Notably, TC degradation was accelerated under specific environmental scenarios, particularly in the presence of HCO₃⁻ or at pH &gt; 9, highlighting its adaptability to alkaline and bicarbonate-rich environments. Mechanistic studies confirmed two synergistic pathways: (1) Electron transfer dominated by graphitic N (62 % contribution), identified as the primary route; and (2) Radical pathways (38 % contribution), where C=O/O−C=O groups activate PMS to generate ^•OH and SO₄^•−. The NBC750/PMS system demonstrated high potential in practical applications, as suggested by its robust anti-interference capability and stable performance across various water matrices. This work provides an innovative and sustainable approach for in-situ preparation of N-doped biochar catalysts, enabling efficient water pollutant degradation while ensuring safe SM disposal and resource recovery.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"375 ","pages":"Article 133813"},"PeriodicalIF":8.1,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176783","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":"Elucidating structure-activity relationships in CdS/ZnO heterojunctions for synergistic adsorption-photocatalysis of uranium (VI) removal","authors":"Yihao Quan ,&nbsp;Sen Lu ,&nbsp;Qingliang Wang ,&nbsp;Hongqiang Wang ,&nbsp;Eming Hu ,&nbsp;Xi Xin ,&nbsp;Yizhe Su ,&nbsp;Yongle Zhang ,&nbsp;Jiacheng Bao","doi":"10.1016/j.seppur.2025.133806","DOIUrl":"10.1016/j.seppur.2025.133806","url":null,"abstract":"<div><div>Efficient removal of uranium(VI) from radioactive wastewater is of critical importance for sustainable utilization of uranium resources and environmental protection against uranium contamination. In this work, we report a dual–function heterojunction of CdS/ZnO for visible light-driven photocatalysis assisted with adsorption, where CdS/ZnO-140 not only accelerates reaction kinetics but also enhances overall U(VI) removal efficiency by confining adsorbed U(VI) near catalytic sites. Furthermore, CdS/ZnO composites were prepared via a facile hydrothermal method, and the effects of hydrothermal temperature on U(VI) removal performance under visible light were systematically investigated. Compared with the pristine CdS and ZnO nanoparticles, the CdS/ZnO heterojunctions exhibit higher removal performances, attributed to the introduction of ZnO component that significantly improves both adsorption capacity and spatial separation efficiency of photo-generated electron-hole pairs. More importantly, different key factors including band gap, energy level, crystallinity, specific surface area, adsorption kinetics and radical generation amount were taken into account for structure–performance investigation of U(VI) photocatalytic removal. Notably, the CdS/ZnO-140 composite exhibits superior U(VI) removal efficiency, outperforming counterparts synthesized at 100 °C and 180 °C. The investigations reveal that the enhanced U(VI) removal activity of CdS/ZnO-140 could be correlated with the efficient charge separation and migration, carrier dynamics, and surface active sites. By elucidating the role of hydrothermal temperature in tuning carrier dynamics and surface reactivity, we provide insights for designing heterojunction photocatalysts with tailored adsorption and redox functionalities.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"375 ","pages":"Article 133806"},"PeriodicalIF":8.1,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176829","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":"Scalable preparation of carbon fabric Janus membrane for water evaporation, photothermal conversion, sewage treatment, and desalination applications and its practical application","authors":"Kebena Gebeyehu Motora, Chang-Mou Wu, Wen-Hsuan Lee, Yu-Ting Peng","doi":"10.1016/j.seppur.2025.133830","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133830","url":null,"abstract":"In<!-- --> <!-- -->this<!-- --> <!-- -->work,<!-- --> <!-- -->a<!-- --> <!-- -->novel,<!-- --> <!-- -->large<!-- --> <!-- -->scalable,<!-- --> <!-- -->multifunctional<!-- --> <!-- -->carbon<!-- --> <!-- -->fabrics/rayon/polyur-ethane (CF/rayon/PU) Janus membrane was designed and successfully developed. The Janus membrane was purposely designed based on premises of: i) mass production, excellent photothermal conversion, and hydrophobicity of CF that is selected to be upper layer. ii) effective water transporting property of rayon that is chosen to be middle layer. iii) insulating property of PU, which is used as bottom layer. These synergic properties can play crucial role for effective water evaporation properties of the Janus membrane. The photothermal conversion, desalination, water evaporation, and sewage treatments performances of the as-synthesized Janus membrane were examined. Besides, the real application of the developed Janus membrane for real sewage water treatment under natural sun light irradiation was also studied. The findings show that the developed CF/rayon/PU Janus membrane has outstanding photothermal conversion, water evaporation (124%), desalination (99.99%) and sewage treatment (100%) properties. The water evaporation property of the Janus membrane is also better than previously reported solar light water evaporators. It also exhibited excellent cyclic stability for that is crucial for practical water evaporation. Moreover, the developed CF/Rayon/PU Janus membrane exhibited superb water evaporation performance and real sewage water treatment under natural sun irradiation in real application. Besides, the preparation method can be used for large-scale application. Therefore, the developed evaporator can play crucial role in addressing clean water scarcity problem in daily life.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"57 1","pages":"133830"},"PeriodicalIF":8.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144183795","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 mZVI surface species through synergistic Sulfur-Graphite incorporation via Mechanochemistry technique for High-Efficiency TCE Dechloridation and electron utilization","authors":"Wenqiang Jiang ,&nbsp;Dianxiao Dong ,&nbsp;Ling Zhang ,&nbsp;Xiutian Zhang ,&nbsp;Xingyi Li ,&nbsp;Yawei Gu ,&nbsp;Honglei Zhang ,&nbsp;Xiaoying Liu ,&nbsp;Yunyi Xiao ,&nbsp;Runze Bi ,&nbsp;Jun Hao ,&nbsp;Haili Wu","doi":"10.1016/j.seppur.2025.133814","DOIUrl":"10.1016/j.seppur.2025.133814","url":null,"abstract":"<div><div>Zero-valent iron (ZVI) technology has gained significant attention for the in situ dechlorination of trichloroethylene (TCE), a typical organic pollutant commonly found in soils and groundwater. However, ZVI technology faces several critical challenges, such as insufficient reactivity, easy passivation, limited selectivity, and unclear mechanisms. In this study, a ball-milled S&amp;C-mZVI^bm material was synthesized by co-incorporation strategy and demonstrated a significant improvement in the degradation efficiency of ZVI. This enhancement occurs alongside a reduction in the hydrogen evolution reaction (HER), thereby increasing the electron selectivity during TCE dechlorination. Through comprehensive characterization techniques, we have shown that the co-incorporation of carbon and sulfur into mZVI results in improved affinity for TCE, accelerated electron transfer, and reduced charge-transfer resistances. The S&amp;C-mZVI^bm also exhibited excellent long-term stability, with degradation efficiency higher than 90% even after 12 repeated cycles. The pathway for TCE dichlorination can be precisely adjusted by the S addition, i.e., the addition of S simultaneously promoted the acetylene production by β-elimination and DCEs production by hydrogenolysis, while suppressed the acetylene transformation to other hydrocarbon products. These findings not only advance the development of ZVI-based materials but also broaden their applicability in the remediation of groundwater contaminated with chlorinated hydrocarbons.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"375 ","pages":"Article 133814"},"PeriodicalIF":8.1,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144184529","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":"High purity helium and hydrogen production from natural hydrogen reservoir and natural gas","authors":"Jianing Yang, Ali Zavabeti, Zhi Yu, Jining Guo, Yalou Guo, Jia Ming Goh, Jianan He, Penny Xiao, Gang Kevin Li","doi":"10.1016/j.seppur.2025.133812","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133812","url":null,"abstract":"Gold hydrogen, formed by natural processes and found within the Earth’s crust, is frequently mixed with helium gases. Due to the significant economic value of both hydrogen and helium, the development of efficient recovery and separation technologies is critical. Currently, cryogenic distillation is the only commercially viable method for helium production, but it is highly energy intensive. While the emerging membrane technologies are capable of separating helium from nitrogen or methane, they are sometimes ineffective for the separation of hydrogen from helium due to similar molecular sizes. Hydrogen/helium separation is also challenging for pressure swing adsorption (PSA) technology as adsorbents with helium or hydrogen selectivity are scarce. In this study, we devised a novel PSA technology that employs the metal alloy LaNi₅ as an adsorbent to effectively separate hydrogen from helium, achieving an enriched helium purity of 99.82 % with a recovery rate of 95.78 % from a 5 % helium feed gas. Remarkably, the specific energy required for helium production from natural gas using the proposed PSA process is only about 2 % of that required by cryogenic distillation, making it particularly suitable for small to medium scale applications. Furthermore, we extended this method to a double-stage PSA system with LiLSX zeolite and metal alloy as adsorbents respectively, which shows great potential for hydrogen and helium recovery from natural gas. This innovative approach offers a more energy-efficient and cost-effective approach for the extraction and purification of these valuable resources.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"93 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177289","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":"Catalytic Peroxymonosulfate activation via In-Situ ketone Derivatives: Unveiling dual kinetics in electrochemical degradation","authors":"Zhen Liu, Rong Liu, Siqi Chen, Mengyu Li, Yuhang Liu, Bangxing Ren, Huan He, Shuquan He, Xiaodi Duan, Yao Chen","doi":"10.1016/j.seppur.2025.133680","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133680","url":null,"abstract":"This study reports for the first time the dual kinetics phenomenon triggered by the in situ generated ketone derivatives in the cathode chamber and reveals the mode of catalytic persulfate activation through electron exchange by the conversion of ketone functional groups to ketone derivatives. The experimental results show that the reaction rate constant in the rapid degradation stage in the cathode chamber (42.62 × 10^-2 min⁻¹) is significantly higher than that in the induction stage (2.11 × 10^-2 min⁻¹), achieving 98.96 % removal within 25 min. The intermediate validation experiments indicate that the in-situ generation of ketone-containing intermediates in the cathode chamber increases the steady-state concentration of reactive species (from 1.71 × 10^-10 to 1.08 × 10^-9 ML^-1), which is the main reason for the increased reaction rate. The ketone capture experiments and density functional theory (DFT) calculations show that the intermediates with ketone functional groups exchange electrons with persulfate ions under alkaline conditions and in the presence of an electric field, generating additional sulfate radicals and singlet oxygen. In the cathode chamber, the electrochemical activation of Peroxymonosulfate (PMS) by ketones on intermediate products is expected to become an inherent catalytic technology for the selective oxidation of pollutants occurring in aquatic environments.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"26 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176780","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":"Enhanced Li+ extraction in ESIP process by LiMn2O4 membrane electrode: The role of Nafion-incorporation","authors":"Zeyu Du ,&nbsp;Xiaowei An ,&nbsp;Bo Qiao ,&nbsp;Peifen Wang ,&nbsp;Xuli Ma ,&nbsp;Xiao Du ,&nbsp;Xiaogang Hao ,&nbsp;Guoqing Guan ,&nbsp;Abuliti Abudula ,&nbsp;Rong Zhang","doi":"10.1016/j.seppur.2025.133821","DOIUrl":"10.1016/j.seppur.2025.133821","url":null,"abstract":"<div><div>The poor electrochemical stability of LiMn₂O₄ (LMO) has long limited its application in lithium extraction. In this study, enhanced stability of LMO membrane electrodes is achieved through a simple Nafion-incorporation strategy within a polyvinylidene fluoride (PVDF) binder. The optimized LMO supported on a stainless steel wire mesh (LMO_Nafion/SSWM) membrane electrode was employed in an electrochemically switched ion permselective (ESIP) system for continuous lithium-ion (Li⁺) extraction. Experimental results show that Nafion-incorporation increased the Li⁺ permeability flux of the LMO/SSWM membrane electrode by 64.34 %. More importantly, compared to the unmodified LMO/SSWM membrane electrode, the LMO_Nafiion/SSWM membrane electrode exhibited a significant reduction in Mn leaching rate, dropping from 5.58 % to 1.83 % after 10 adsorption–desorption cycles. Physicochemical characterizations combined with DFT calculations revealed that the hybridization of the <em>p</em>-orbital electrons of the O of the sulfonic acid group in Nafion and the <em>d</em>-orbital electrons of Mn enabled Nafion effectively anchored Mn. This interaction suppressed Mn dissolution and significantly improved the electrochemical performance of the LMO membrane electrode.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"375 ","pages":"Article 133821"},"PeriodicalIF":8.1,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185212","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":"Effective capture of uranium from highly fluoridated wastewater by Dictyophora indusiata-derived biochar and its derivative materials","authors":"Hairui Hou ,&nbsp;Shuqin Wang ,&nbsp;Lin Fang ,&nbsp;Xiangxue Wang ,&nbsp;Baowei Hu","doi":"10.1016/j.seppur.2025.133820","DOIUrl":"10.1016/j.seppur.2025.133820","url":null,"abstract":"<div><div>Extraction of uranium (U(Ⅵ)) from fluoride-rich radioactive wastewater is essential for nuclear energy development and environmental remediation. The current investigation delves into the viability of employing <em>Dictyophora indusiata</em> biochar (DIBC) materials modified with different chemical reagents (H₃PO₄, polyaniline, NaOH and KMnO₄) for the effective capture of U(Ⅵ) from highly fluoridated wastewater. By comparing the effects of different modification methods, the KMnO₄-modified DIBC (KM-DIBC) showed the most significant removal effect, which was attributed to its huge specific surface area, strong heterogeneity and a profusion of O-containing functional groups. The maximum removal capacity of U(Ⅵ) by KM-DIBC reached 182.90 mg·g⁻¹, marking a remarkable enhancement of 2.15 times compared to the original DIBC, and the uptake capacity remained as high as 132.44 mg·g⁻¹ even in an environment with high concentration of fluoride ions (c (F⁻) = 10 g·L⁻¹). Furthermore, KM-DIBC exhibited excellent stability in complex environments where multiple ions coexist, further confirming its great potential for practical applications. Detailed studies and analyses have indicated that the mechanism by which KM-DIBC removes U(Ⅵ) likely encompasses a sophisticated interplay of cation-π interactions, electrostatic attraction, coordination and Lewis acid-base interactions. This investigation not only provides new materials and methods for the effective removal of U(Ⅵ) from high-fluoride wastewater, but also provides important theoretical basis and technical support in the field of environmental remediation and nuclear resource recovery.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"375 ","pages":"Article 133820"},"PeriodicalIF":8.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185213","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}