Separation and Purification Technology最新文献_第3页

Understanding the adsorption trilemma: Achieving load, level, and selectivity for the removal of pharmaceuticals with zeolites 理解吸附的三难选择：实现沸石去除药物的负荷、水平和选择性

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-01-31 DOI: 10.1016/j.seppur.2026.137086

Jakob Brauer , Parisa Mahdavi , Jorg Thöming , Michael Fischer

{"title":"Understanding the adsorption trilemma: Achieving load, level, and selectivity for the removal of pharmaceuticals with zeolites","authors":"Jakob Brauer , Parisa Mahdavi , Jorg Thöming , Michael Fischer","doi":"10.1016/j.seppur.2026.137086","DOIUrl":"10.1016/j.seppur.2026.137086","url":null,"abstract":"<div><div>The persistence and ecotoxic effects of pharmaceuticals in aquatic environments demand their removal from wastewater treatment plant effluents. Adsorbents for this purpose must combine high uptake at low concentration levels and a high adsorption load (capacity) with strong selectivity over competing wastewater constituents. Yet, a systematic strategy to address this trilemma remains elusive. Here, we present such an approach using commercial zeolites, which are promising candidates for selective removal owing to the strong influence of molecular shape–topology relationships on interaction energies. The removal of carbamazepine (CBZ) and diclofenac (DCF) with maximum capacities and affinities of 59.71 mg/g and 3.37 L/mg, as well as 104.28 mg/g and 0.21 L/mg, respectively, could be maintained for CBZ adsorption in a secondary-treated municipal wastewater effluent (WWTP effluent), while the adsorption of DCF was significantly reduced. Thermodynamic interpretation of the experimental isotherm parameters showed an excellent quantitative agreement with free energy perturbation simulations, yielding consistent free adsorption energies for CBZ across all zeolites. This confirms that for structurally rigid pollutants, mostly consisting of annulated ring structures, the shape-topology fit is the dominant and predictive factor for adsorption, providing a clear design principle for the targeted selection of zeolites. In contrast, the deviations observed for the DCF molecule with a more flexible structure, consisting of two rings that can more freely arrange with respect to each other, highlight that for non-rigid, more complex pollutants, dynamic conformational effects and guest-guest interactions can become critically important. This study reveals the zeolite topology as a determinant of selective pharmaceutical uptake from wastewater and paves the way for contaminant-specific selection.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137086"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172513","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}

引用次数: 0

Coupling Ni exposure with interfacial oxygen on Zr-doped CeO₂ for stable dry reforming of methane zr掺杂CeO 2上Ni与界面氧耦合暴露对甲烷稳定干重整的影响

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-09 DOI: 10.1016/j.seppur.2026.137164

Qinghui Yu , Yuqin Cheng , Qiufan Qu , Xuanyu Ji , Yu Yang , Yang Su , Xin Yu , Lu Yang , Lin Chen , Xiong Zhou

{"title":"Coupling Ni exposure with interfacial oxygen on Zr-doped CeO₂ for stable dry reforming of methane","authors":"Qinghui Yu , Yuqin Cheng , Qiufan Qu , Xuanyu Ji , Yu Yang , Yang Su , Xin Yu , Lu Yang , Lin Chen , Xiong Zhou","doi":"10.1016/j.seppur.2026.137164","DOIUrl":"10.1016/j.seppur.2026.137164","url":null,"abstract":"<div><div>Dry reforming of methane (DRM) co-converts CH₄ and CO₂ but is limited by Ni sintering and carbon deposition at high temperature. CeO₂-based supports with oxygen vacancies can mitigate these issues, and Zr doping further tunes defect chemistry and basicity, yet the combined roles of Zr content, Ni exposure and pore architecture in governing interfacial oxygen supply and stability remain unclear. Spherical CeO₂ with interconnected through-pores and narrow mesopores is used as a common scaffold to prepare 5Ni/Ce₁₋ₓZrₓO₂ catalysts (Zr = 0, 1, 3 and 7 mol%) at fixed Ni loading and morphology. XRD, Raman and XPS confirm homogeneous Ce₁₋ₓZrₓO₂ solid solutions and show that, within the investigated Zr range, 3 mol% Zr gives the highest Ce<sup>3+</sup> fraction and defect related surface oxygen while maintaining a moderate Ni particle size. CO₂ TPD, O₂ TPD, H₂ TPR and H₂ TPD further indicate that medium strength basic sites, interfacial reducible oxygen and accessible Ni sites are best balanced at 3 mol% Zr among the studied compositions. Under DRM at 800 °C, 5Ni/Ce₀․₉₇Zr₀․₀₃O₂ shows the highest CH₄ and CO₂ conversions, the lowest apparent activation energy, an H₂/CO ratio near 1.0 and the lowest coke amount over 50 h. Post-reaction XRD, TG–DTG, Raman and SEM suggest reduced Ni sintering and a larger fraction of filamentous or weakly bound carbon. These results are consistent with the importance of the Ni–Ce–Zr–O interfacial structure in balancing Ni exposure and oxygen supply, enabling high activity with low coking.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137164"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146185","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}

引用次数: 0

Finite-time thermodynamics study on solution thermal-regeneration for frost-free air source heat pump 无霜空气源热泵溶液热再生的有限时间热力学研究

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-09 DOI: 10.1016/j.seppur.2026.137203

Liutao Zhu , Zhikang Yu , Zhu Jiang , Xiaosong Zhang , Shifang Huang

{"title":"Finite-time thermodynamics study on solution thermal-regeneration for frost-free air source heat pump","authors":"Liutao Zhu , Zhikang Yu , Zhu Jiang , Xiaosong Zhang , Shifang Huang","doi":"10.1016/j.seppur.2026.137203","DOIUrl":"10.1016/j.seppur.2026.137203","url":null,"abstract":"<div><div>The solution regeneration process in frost-free air-source heat pump (FFASHP) “imposes a substantial energy burden, directly influencing the overall system efficiency. Although various solution regeneration methods, including evaporation, distillation, and membrane distillation, have been studied extensively, their thermodynamic limits remain unclear. This study utilizes finite-time thermodynamics (FTT) to derive the expression for the minimum heat required in the solution thermal-regeneration process. A comprehensive parametric analysis reveals the interdependencies between solution concentration, regeneration ratio, heat source temperature, ambient temperature, heat transfer capacity-to-mass flow coefficient (<em>θ</em>), and internal reversibility coefficient in determining the minimum specific energy consumption (SEC). Under the basic parameters of this study, the system achieves SEC values of 74.08 kWh/t (thermal) and 16.78 kWh/t (mechanical) at the minimum <em>θ</em>. The <em>θ</em> are 2.12, 3.77, and 7.12 kJ/(kg·K) at thermodynamic second law efficiencies (<em>η</em><sub><em>II</em></sub>) of 0.95, 0.9, and 0.8, respectively. Life-cycle cost optimization identifies an economically optimal <em>η</em><sub><em>II</em></sub> value of 0.62, corresponding to a minimum total cost of $667.70 over a 20-year operational horizon in the case study. This study establishes theoretical benchmarks for regeneration energy consumption while providing actionable insights for balancing thermodynamic performance with economic viability in FFASHP solution regeneration system design.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137203"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153668","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}

引用次数: 0

Simultaneous removal of Cd (II) and benzo(a)pyrene complex pollution in a Fe1-xS@kaolinite/peroxymonosulfate system Fe1-xS@kaolinite/过氧单硫酸盐体系中同时去除Cd （II）和苯并(a)芘络合物污染

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-05 DOI: 10.1016/j.seppur.2026.137100

Xinlin Wang , Chunquan Li , Jinpan Li , Wanshu Chen , Wanjie Wang , Meng Yuan , Kai Wang , Fang Yuan , Hongqi Sun , Zhiming Sun

{"title":"Simultaneous removal of Cd (II) and benzo(a)pyrene complex pollution in a Fe1-xS@kaolinite/peroxymonosulfate system","authors":"Xinlin Wang , Chunquan Li , Jinpan Li , Wanshu Chen , Wanjie Wang , Meng Yuan , Kai Wang , Fang Yuan , Hongqi Sun , Zhiming Sun","doi":"10.1016/j.seppur.2026.137100","DOIUrl":"10.1016/j.seppur.2026.137100","url":null,"abstract":"<div><div>The coexistence of heavy metals and organic contaminants in wastewater poses severe risks to public health and environmental sustainability. Iron sulfide (FeS) has attracted widespread attention for its potential in addressing such complex pollution, but suffers from the tendency to agglomerate and instability, which may lead to unsatisfactory remediation efficiencies. Herein, a novel Fe<sub>1-x</sub>S/kaolinite composite (Fe<sub>1-x</sub>S@K), derived from the transformation of FeS/kaolinite (FeS@K) material in an acidic condition, demonstrates efficient simultaneous removal of Cd(II) and benzo(<em>a</em>)pyrene (B[<em>a</em>]P) by ensuring excellent dispersion and stability. Notably, the 0.6-Fe<sub>1-x</sub>S@K/peroxymonosulfate (PMS) system removed 96.9% of Cd<sup>2+</sup> and 98.9% of B[<em>a</em>]P within 20 min, respectively. Mechanism analysis revealed that kaolinite modulates the particle size of Fe<sub>1-x</sub>S to effectively minimize the agglomeration, thereby facilitating the activation of PMS and enhancing both thermal and chemical stability. This significantly boosts the generation of reactive oxygen species (ROS), e.g., SO<sub>4</sub><sup>⋅−</sup>, <sup>⋅</sup>OH, <sup>1</sup>O<sub>2</sub>, and <sup>⋅</sup>O<sub>2</sub><sup>−</sup> in the degradation system, thus exhibits an exceptional potential for natural water and wastewater treatment due to its broad resistance to environmental interference. This work exemplifies a highly efficient sulfate radical-based advanced oxidation process for the removal of complex contaminants in water treatment.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137100"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146115825","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}

引用次数: 0

Faceted Bi2O2CO3 with Au@Mn3O4-induced dipole resonance for efficient photocatalytic NO/clothianidin oxidation 面Bi2O2CO3与Au@Mn3O4-induced偶极共振有效光催化NO/噻虫胺氧化

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-06 DOI: 10.1016/j.seppur.2026.137173

Xiaoming Xu , Jiaying Huang , Xianhui Zhu , Bing Liu , Ziyi Huang , Yijin Jia , Yike Zhang , Cheng Sun

{"title":"Faceted Bi2O2CO3 with Au@Mn3O4-induced dipole resonance for efficient photocatalytic NO/clothianidin oxidation","authors":"Xiaoming Xu , Jiaying Huang , Xianhui Zhu , Bing Liu , Ziyi Huang , Yijin Jia , Yike Zhang , Cheng Sun","doi":"10.1016/j.seppur.2026.137173","DOIUrl":"10.1016/j.seppur.2026.137173","url":null,"abstract":"<div><div>Efficient photocatalytic air and water remediation was limited by the trade-off between redox potential and spectral response. Herein, an Au/faceted Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>@Mn<sub>3</sub>O<sub>4</sub> core@shell heterostructure was engineered for enhanced NO oxidation and clothianidin (CLO) degradation. Specifically, the interleaved slit architecture of Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> with exposed {001} facets enhanced light scattering and surface energy, promoting visible light absorption and oxidation reactions. Notably, plasmonic Au nanoparticles synergized with Mn<sub>3</sub>O<sub>4</sub> to induce dipole resonance due to symmetry of the electric field vector, amplifying the local electric field and broadening the spectral response. Meanwhile, Au mediated charge redistribution between Mn<sub>3</sub>O<sub>4</sub> and faceted Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>, generating a giant internal electric field (IEF) that accelerated charge separation. Consequently, the heterostructure achieved 73.2% NO removal with 93.5% NO<sub>3</sub><sup>−</sup> selectivity and minimal NO<sub>2</sub> formation (28.6 ppb), as well as 95.6% CLO degradation under visible light, ultimately converting into non-toxic products, which exceeded reported benchmarks. The enhanced activity originated from Mn<sub>3</sub>O<sub>4</sub>/Au-induced dipole resonance–assisted <em>Z</em>-scheme charge transfer combined with IEF-driven carrier separation and prolonged lifetimes. The catalyst also exhibited excellent cycling stability, highlighting its promise for air and water purification.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137173"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135585","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}

引用次数: 0

Enabling ultra-low-temperature NH3-SCR with superior H2O/SO2 resistance by a sandwich-structured ERI@CoFe-MnOx@Cor monolithic catalyst 通过三明治结构ERI@CoFe-MnOx@Cor单片催化剂实现超低温NH3-SCR具有优异的耐H2O/SO2性能

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-06 DOI: 10.1016/j.seppur.2026.137174

Yuhan Li , Juntao Wang , Liwei Xu, Haixin Shan, Yemei Liu, Na Hu, Xiangshu Chen

{"title":"Enabling ultra-low-temperature NH3-SCR with superior H2O/SO2 resistance by a sandwich-structured ERI@CoFe-MnOx@Cor monolithic catalyst","authors":"Yuhan Li , Juntao Wang , Liwei Xu, Haixin Shan, Yemei Liu, Na Hu, Xiangshu Chen","doi":"10.1016/j.seppur.2026.137174","DOIUrl":"10.1016/j.seppur.2026.137174","url":null,"abstract":"<div><div>The development of NH<sub>3</sub>-SCR catalysts that simultaneously achieve high activity at ultra-low temperatures (<150 °C) and possess robust resistance to H<sub>2</sub>O and SO<sub>2</sub> poisoning remains a significant challenge. In this work, a novel sandwich-structured monolithic catalyst, denoted as ERI@Co<sub>1.0</sub>Fe<sub>0.6</sub>-MnO<sub>x</sub>@Cor (where ERI stands for erionite), was successfully fabricated. This was achieved by sequentially constructing a CoFe-MnO<sub>x</sub> intermediate catalytic layer via an impregnation-coprecipitation method and an outer zeolite ERI shell through a dip-coating process on the cordierite support. The optimized catalyst exhibits exceptional NO<sub>x</sub> conversion (>95%) within a broad temperature window of 150–350 °C, achieving complete conversion (100%) at 150 °C. More importantly, the sandwich structure endows the catalyst with superior resistance to H<sub>2</sub>O and SO<sub>2</sub>, maintaining over 90% NO<sub>x</sub> conversion at 150–250 °C even in the presence of 5 vol% H<sub>2</sub>O and/or 100 ppm SO<sub>2</sub>. This performance is significantly superior to that of all previously reported counterparts. Characterization results revealed that the Co–Fe–Mn ternary synergy enhances redox properties via increased Mn<sup>4+</sup> and chemisorbed oxygen concentrations, while the ERI zeolite shell as a protective barrier was identified as the key factor responsible for the enhanced medium-strength acid sites and exceptional poisoning resistance. Combined with its regenerable stability, this work provides a novel strategy for designing high-performance monolithic SCR catalysts for practical low-temperature applications.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137174"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135586","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}

引用次数: 0

Enhancing hydrogen sulfide removal through photoelectrochemistry with WO3 photoanodes under blue LED irradiation 蓝光LED照射下WO3光阳极光电化脱除硫化氢

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-03 DOI: 10.1016/j.seppur.2026.137138

Roberta Y.N. Reis , Alberto Rodríguez-Gómez , Caio V.S. Almeida , Lucia H. Mascaro , Manuel A. Rodrigo

{"title":"Enhancing hydrogen sulfide removal through photoelectrochemistry with WO3 photoanodes under blue LED irradiation","authors":"Roberta Y.N. Reis , Alberto Rodríguez-Gómez , Caio V.S. Almeida , Lucia H. Mascaro , Manuel A. Rodrigo","doi":"10.1016/j.seppur.2026.137138","DOIUrl":"10.1016/j.seppur.2026.137138","url":null,"abstract":"<div><div>Hydrogen sulfide (H<sub>2</sub>S) is a highly toxic and corrosive gas commonly found in industrial emissions, posing serious environmental and operational risks. This work proposes an innovative photoelectrocatalytic strategy for the simultaneous degradation of gaseous H<sub>2</sub>S and the generation of green hydrogen (H<sub>2</sub>) under flux conditions. The system integrates gas-liquid absorption with electrochemical and photoelectrochemical oxidation, employing a WO<sub>3</sub> photoanode and a stainless steel cathode separated by a proton exchange membrane. The performance of the electrocatalytic and photoelectrocatalytic configurations was systematically evaluated regarding H<sub>2</sub>S removal efficiency, hydrogen production, and energy consumption. The photoelectrocatalytic process exhibited superior activity, achieving a degradation of 8.2 mg S with a Coulombic efficiency of 3600 mg S Ah<sup>−1</sup> for H<sub>2</sub>S oxidation and a Faradaic efficiency of 60% for H<sub>2</sub> evolution at an applied current density of 0.33 mA cm<sup>−2</sup>. Illumination with a 10 W high-power blue LED significantly increased charge separation and reduced the cell potential, resulting in higher energy efficiency. Post-reaction characterization by X-ray photoelectron spectroscopy (XPS) demonstrated partial sulfur deposition on the WO<sub>3</sub> surface and the presence of oxidized sulfur species. Overall, the results demonstrate that photoelectrocatalysis under optimized conditions offers an efficient and sustainable route for simultaneous H<sub>2</sub>S reduction and hydrogen generation, providing a promising dual-purpose platform for environmental remediation and renewable energy production.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137138"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146101344","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}

引用次数: 0

Innovative RO-only approach for efficient urea management in ultrapure water production from municipal wastewater reuse 创新的RO-only方法在城市废水回用的超纯水生产中高效尿素管理

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-07 DOI: 10.1016/j.seppur.2026.137167

Chulmin Lee , Iiyama masamitsu

{"title":"Innovative RO-only approach for efficient urea management in ultrapure water production from municipal wastewater reuse","authors":"Chulmin Lee , Iiyama masamitsu","doi":"10.1016/j.seppur.2026.137167","DOIUrl":"10.1016/j.seppur.2026.137167","url":null,"abstract":"<div><div>Urea is a recalcitrant, electrically neutral low-molecular-weight TOC component in municipal reclaimed water and a critical barrier for semiconductor ultrapure water (UPW) systems targeting sub-ppb TOC. This study evaluates a membrane-first, RO-only strategy as a chemical-free, “drop-in” upgrade to existing two-pass RO trains, avoiding dedicated urea-removal units (e.g., BAC, AOP, oxidation). Four commercial elements (TBW-HR, TMG(D), TM800M, and NRSP-UBT) were benchmarked at bench-scale using 4-in. modules under an equal-flux basis. Neutral-solute transport was parameterized by an apparent urea permeability, B<sub>urea</sub>  reproduced configuration-dependent pilot trends while acknowledging expected scale effects in 8-in. multi-element vessels. The results define a robust operating envelope for RO-only urea control under high-quality reclaimed feeds (8–10 ppb baseline) and typical excursions (20–50 ppb), enabling reduced chemical use, footprint, and cost in next-generation UPW infrastructure.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137167"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135560","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}

引用次数: 0

A novel pyrazolyl-pyridine N-donor ligand-based extraction system for the separation of trivalent actinides from lanthanides without lipophilic anions 一种新型的吡唑吡啶n给体萃取体系用于分离三价锕系元素和不含亲脂阴离子的镧系元素

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-03 DOI: 10.1016/j.seppur.2026.137147

Rui Li, Hang Zhou, Yiting Wang, Qiao Yu, Die Huang, Qiaoyin Huang, Songdong Ding

{"title":"A novel pyrazolyl-pyridine N-donor ligand-based extraction system for the separation of trivalent actinides from lanthanides without lipophilic anions","authors":"Rui Li, Hang Zhou, Yiting Wang, Qiao Yu, Die Huang, Qiaoyin Huang, Songdong Ding","doi":"10.1016/j.seppur.2026.137147","DOIUrl":"10.1016/j.seppur.2026.137147","url":null,"abstract":"<div><div>To address the challenges of poor lipophilicity and the reliance on synergistic extractants in pyrazolyl-pyridine N-donor ligands for separating trivalent actinides from lanthanides, four 2,6-bis(5-alkyl-1H-pyrazol-3-yl)pyridine (BPP) ligands with varying alkyl chains were designed and synthesized. An efficient extraction system was established using <em>n</em>-octanol/<em>n</em>-dodecane (50 vol%) as the diluent, requiring no synergistic extractant. Among the ligands, C8-BPP exhibits a higher extraction selectivity for Am<sup>3+</sup> over trivalent lanthanide ions (Ln<sup>3+</sup>), with separation factors (<em>SF</em><sub>Am/Ln</sub>) ranging from 48 to 172. Slope analysis, UV–vis titration, and isothermal titration calorimetry (ITC) consistently confirmed a 2:1 ligand-to-metal complexation stoichiometry with Eu<sup>3+</sup>. Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) analyses verified the tridentate coordination mode of C8-BPP. Further studies using Raman spectroscopy and conductivity measurements revealed the bidentate coordination of NO<sub>3</sub><sup>−</sup> ions and their coordination number in the inner sphere, while time-resolved laser fluorescence spectroscopy (TRLFS) confirmed a dehydrated inner coordination environment for Eu<sup>3+</sup>. Based on combined extraction and complexation results, a neutral complexation-based extraction model was proposed. The corresponding stability constants and thermodynamic parameters (Δ<em>H</em>, Δ<em>S</em>, Δ<em>G</em>) were also determined.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137147"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110898","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}

引用次数: 0

Effect of varying cosolvent on the properties and performance of ZIF-8 for recyclable CO2 adsorption and storage 不同助溶剂对ZIF-8吸附和储存可循环CO2性能的影响

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-04 DOI: 10.1016/j.seppur.2026.137155

Fraz Saeed Butt, Hadi Hassan, Richard T. Baker

{"title":"Effect of varying cosolvent on the properties and performance of ZIF-8 for recyclable CO2 adsorption and storage","authors":"Fraz Saeed Butt, Hadi Hassan, Richard T. Baker","doi":"10.1016/j.seppur.2026.137155","DOIUrl":"10.1016/j.seppur.2026.137155","url":null,"abstract":"<div><div>CO₂ capture and storage is central to the global warming crisis. A range of technologies is under development, including adsorption, cryogenic separation, and sequestration, for the capture, storage, or utilization of CO₂. Among these, the use of Metal-Organic Framework nanomaterial adsorbents is promising due to their ability to efficiently separate and store CO₂. Here, ZIF-8 nanocrystals were prepared using a facile, one-pot, room temperature cosolvent-based hydrothermal route. This method significantly reduced total cosolvent and ligand consumption (from a ligand (L)/metal (M) ratio of 70 to 8), resulting in a more environmentally friendly and economically viable synthesis. ZIF-8 crystals were prepared using a range of common organic cosolvents, and systematic studies were performed to investigate the influence of cosolvent on their properties. These included crystal phase, crystallinity, molecular structure, bonding type, elemental composition, surface area, and pore volume. The cosolvent-based ZIF-8 samples exhibited excellent thermal stability in both nitrogen and air environments. They also showed impressive CO<sub>2</sub> adsorption capacities in adsorption isotherm (0.81 mmol g<sup>−1</sup> at 25 °C and 100 kPa for ZIF-8<sub>Methanol</sub>) and thermogravimetric (∼2.50 wt%/0.57 mmol g<sup>−1</sup> for ZIF-8<sub>n-hexane</sub>) experiments, with excellent recyclability. This study provides a guide for preparing suitable ZIF-8 materials for adsorption and related applications.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137155"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172347","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}

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