Separation and Purification Technology最新文献

{"title":"Flow-induced crystallization using a static mixer crystallizer","authors":"Ajeet Pratap Singh, Saied Delagah, John Pellegrino","doi":"10.1016/j.seppur.2026.140005","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140005","url":null,"abstract":"Inland desalination benefits from concentrate minimization. We present initial results using an inline static mixer crystallizer (SM) to accelerate crystallization of supersaturated CaCO<ce:inf loc=\"post\">3</ce:inf> from a model reverse osmosis desalination process' concentrate. A 1″ diameter SM tubular reactor, containing bespoke 3d-printed static mixer elements—designed to provide micromixing at even low <ce:italic>Re</ce:italic>—and fabricated from copolyamide (CoPA) polymer, was evaluated. Four unique mixer element shapes (shell, farfalle, rotelle, and hourglass) and three nominal residence times (τ = 3, 7, and 11 min) were used to conduct 90 min laboratory experiments. Within the limits of our experiments, we conclude that all tested configurations achieved &gt;59% desupersaturation (i.e., in this case the saturation index for CaCO<ce:inf loc=\"post\">3</ce:inf> decreases from ~2.5 to ~2 for our solution) up to &gt;90%, confirming consistent and rapid crystallization within the reactor. All tested configurations achieved substantial calcium depletion, with shell and farfalle generally producing higher mean depletion than rotelle and hourglass. This may suggest that shell and farfalle mixer element shapes provide superior micromixing and nucleation. This study demonstrates that SM technology is promising for enabling controlled crystallization in a compact, simple, short residence time, and easy-to-operate device.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"43 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148883905","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":"Pretreatment-free conversion of spent FCC catalyst into low-silica CHA for K+-gated inverse CO2/C2H2 separation","authors":"Haoyang Zhang, Binyu Wang, Yi Lu, Ruobing Bai, Junyao Pan, Shuang Liu, Haonan Sun, Zhongyi Xue, Changchang Fan, Ran Jia, Wenfu Yan","doi":"10.1016/j.seppur.2026.140002","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140002","url":null,"abstract":"Separating CO<ce:inf loc=\"post\">2</ce:inf> from C<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">2</ce:inf> is difficult because the two molecules have similar sizes and physicochemical properties. Here, spent fluid catalytic cracking (FCC) catalyst was directly uncycled into low-silica <ce:bold>CHA</ce:bold> zeolite through a one-pot hydrothermal route without prior catalyst activation, organic structure-directing agents (OSDAs), fluoride sources, or seed crystals. The resulting Al-rich <ce:bold>CHA</ce:bold> framework enables the density and location of extra-framework cations to be tuned for molecular transport control. Ion-exchange experiments show that K<ce:sup loc=\"post\">+</ce:sup>, unlike Na<ce:sup loc=\"post\">+</ce:sup> or Ca<ce:sup loc=\"post\">2+</ce:sup>, strongly restricts C<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">2</ce:inf> transport while retaining CO<ce:inf loc=\"post\">2</ce:inf> accessibility. K-CHA-1.2 (Si/Al = 1.2) and K-CHA-2.5 (Si/Al = 2.5) deliver ideal adsorbed solution theory (IAST) CO<ce:inf loc=\"post\">2</ce:inf>/C<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">2</ce:inf> selectivities of 622.7 and 666.6, respectively, for an equimolar mixture at 298 K and 1 bar; K-CHA-2.5 also retains a CO<ce:inf loc=\"post\">2</ce:inf> uptake of 3.55 mmol g<ce:sup loc=\"post\">−1</ce:sup>. Dynamic breakthrough experiments confirm direct C<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">2</ce:inf> recovery, and K-CHA-1.2 maintains its separation behavior over five adsorption–regeneration cycles. Density functional theory (DFT) and hybrid grand canonical Monte Carlo/molecular dynamics (GCMC/MD) simulations reveal that K<ce:sup loc=\"post\">+</ce:sup> ions positioned at eight-ring windows act as molecular trapdoors: stronger CO<ce:inf loc=\"post\">2</ce:inf>-K<ce:sup loc=\"post\">+</ce:sup> interactions promote reversible gate opening and selective CO<ce:inf loc=\"post\">2</ce:inf> transport, whereas C<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">2</ce:inf> remains diffusion-restricted. These results connect framework Al density, K<ce:sup loc=\"post\">+</ce:sup> distribution, and gas transport, while demonstrating a waste-derived route to robust zeolitic adsorbents for energy-efficient inverse CO<ce:inf loc=\"post\">2</ce:inf>/C<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">2</ce:inf> separations.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"19 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148883906","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":"Corrigendum to “ZIF-67-Hmim-PDMS-PEO/Pebax mixed matrix membranes: enhanced CO2 separation performance through interfacial design and synergistic effects” [Sep. Purif. Technol. 395 (2026) 137844]","authors":"Huiping Huang,Dan Zhao,Yuanfa Liu,Shuhui Chen,Lele Wang,Jizhong Ren","doi":"10.1016/j.seppur.2026.139870","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.139870","url":null,"abstract":"","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"6 1","pages":"139870"},"PeriodicalIF":8.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895087","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":"Natural polyphenol–rich Dioscorea cirrhosa extract synergistically improves the Fe(III)/sodium percarbonate system for quinoline removal: Active components, degradation mechanism and performance","authors":"Yuanyuan Zhou,Chongyun He,Shaoqi Zhou,Ke Zheng","doi":"10.1016/j.seppur.2026.140020","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140020","url":null,"abstract":"","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"17 1","pages":"140020"},"PeriodicalIF":8.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895095","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":"Non-thermal plasma-induced methylparaben degradation in water: Hydroxyl radical-mediated degradation pathway and toxicity mitigation","authors":"Zaffar Iqbal,Madeeha Iqbal,Oat Bahadur Dhakal,Kirubel Amsalu,Jun Sup Lim,Jin Sung Choi,Ihn Han,Nagendra Kumar Kaushik,Byoungchoo Park,Eun Ha Choi","doi":"10.1016/j.seppur.2026.140029","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140029","url":null,"abstract":"","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"493 1","pages":"140029"},"PeriodicalIF":8.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895096","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":"Strong Lewis acidic Sc doped hexagonal boron nitride single-atom adsorbents with excellent selectivity for adsorptive desulfurization","authors":"Xinyu Shi,Wenxiang Qiu,Xinmiao Zhang,Yiting Jiang,Jing He,Wei Jiang,Naixia Lv,Shulai Lei,Gang Fu,Huaming Li,Hongping Li","doi":"10.1016/j.seppur.2026.140053","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140053","url":null,"abstract":"","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"164 1","pages":"140053"},"PeriodicalIF":8.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148896011","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":"Photocatalytic removal of single dyes and binary dye mixtures by green synthesized ZnO-based nanocatalysts: A derivative spectrophotometric monitoring approach","authors":"Kaan Şendal,Mahmure Üstün Özgür,Öznur Dülger Kutlu","doi":"10.1016/j.seppur.2026.140031","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140031","url":null,"abstract":"","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"74 1","pages":"140031"},"PeriodicalIF":8.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895092","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":"Intensified downstream processing for bioenzymatic HMF valorization: Design, simulation, and techno-economic feasibility","authors":"Norbert Botond Mihaly,Miruna Prodan,Vasile Mircea Cristea,Anton A. Kiss","doi":"10.1016/j.seppur.2026.140025","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140025","url":null,"abstract":"","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"59 1","pages":"140025"},"PeriodicalIF":8.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148896013","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":"Bulk-to-Interface electric-field coupling in facet-engineered CeO2/BiOCl for photocatalytic PFOA defluorination in water purification","authors":"Zhuo Qizheng,Huang Zhenggang,Wang Lejia,Guan Baohong","doi":"10.1016/j.seppur.2026.140040","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140040","url":null,"abstract":"","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"12 1","pages":"140040"},"PeriodicalIF":8.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895085","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":"One-step synthesis of Si-containing biochar from wheat dust for oxytetracycline hydrochloride removal: Mechanisms and life cycle assessment","authors":"Xue Song,Erying Xu,Weishuang Lou,Hailiang Zhao,Guanghui Yan,Xiaodan Lou,Yingming Zhang,Yongde Liu,Guihua Yan","doi":"10.1016/j.seppur.2026.140038","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.140038","url":null,"abstract":"","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"18 1","pages":"140038"},"PeriodicalIF":8.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895089","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}