Separation and Purification Technology最新文献_第2页

Separation of Cd and Ni from Ni-Cd batteries using thiosulfate as leaching, precipitating and separating agent via photochemical method 以硫代硫酸盐为浸出沉淀分离剂光化学方法从镍镉电池中分离Cd和Ni

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-09 DOI: 10.1016/j.seppur.2025.133450

Chao Han, Jiaqi Shi, Jiangbo Chi, Xinli Li, Qiankun Jing, Jiwen Li

{"title":"Separation of Cd and Ni from Ni-Cd batteries using thiosulfate as leaching, precipitating and separating agent via photochemical method","authors":"Chao Han, Jiaqi Shi, Jiangbo Chi, Xinli Li, Qiankun Jing, Jiwen Li","doi":"10.1016/j.seppur.2025.133450","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133450","url":null,"abstract":"In recent years, recycling spent batteries has become a critical issue. In this study, the thiosulfate system which is used as leaching, precipitating, and separating agent was adopted, while the process combined with thiosulfate leaching, precipitation recovery, and UV photolysis separation steps was carried out to recycle spent nickel-cadmium (Ni-Cd) batteries. In the leaching process, Cu2+ provided by copper sulfate (CuSO4) synergistically catalyzes the efficient leaching of Ni and Cd through oxidation and the formation of soluble complexes with S2O32−. The experimental results and statistical analysis revealed that the leaching rate of Cd is only 34.79% without adding CuSO4 as catalytic oxidant, while Ni can not be leached. At 0.01 mol/L CuSO4 concentration, the leaching efficiency of Cd at 70 °C and 8 h was 90.47 %. Meanwhile, Ni reached a leaching efficiency of 42.46 %, and the initial separation coefficient between Cd and Ni was 0.47. Rhodamine B (RhB) was degraded by leaching residue, and the degradation effect of 30 mg leaching residue on 15 mg/L RhB reached 95.87 %. Based on the photochemical differentiation of metal thiosulfate complexes, the photolysis process for Cd selectively separated from Cd and Ni containing leach solutions under UV photochemistry was explored. A UV light source with a wavelength of 254 nm was chosen, and the rate constant for the photolysis of the Cd thiosulfate complex at a Na2S2O3 concentration of 0.3 mol/L was 0.00321 min−1, while the Ni thiosulfate complex remained largely failed to photolysis. Finally, Cd in the solution was converted into CdS precipitate with a precipitation rate of 88.39 %. The separation coefficient between Cd and Ni was 0.12 × 10−3, achieving the selective separation of Cd and Ni.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"1 1","pages":"133450"},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930944","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

Nano-armored super-hydrophilic antifouling membrane through dual counter-diffusion-induced process for separation of crude oil emulsion 纳米铠装超亲水性防污膜通过双重反扩散诱导工艺分离原油乳化液

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-09 DOI: 10.1016/j.seppur.2025.133351

Lulu Wang, Ruilong Zhang, Zirui Li, Xiaohua Tian, Li Chen, Xiaohui Dai, Yongsheng Yan, Jiangdong Dai, Jianming Pan

{"title":"Nano-armored super-hydrophilic antifouling membrane through dual counter-diffusion-induced process for separation of crude oil emulsion","authors":"Lulu Wang, Ruilong Zhang, Zirui Li, Xiaohua Tian, Li Chen, Xiaohui Dai, Yongsheng Yan, Jiangdong Dai, Jianming Pan","doi":"10.1016/j.seppur.2025.133351","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133351","url":null,"abstract":"Conventional superhydrophilic membrane surfaces effectively resist low-viscosity oil stains, but it is difficult to avoid crude oil adhesion. There is still room for improvement in the anti-fouling performance throughout the crude oil emulsion separation process. Using metal salts and phytic acid molecules as building blocks, a nano-armored superhydrophilic metal-phytic acid coordination self-assembled membrane (M−PA/CAM) is prepared with a dual counter-diffusion-induced strategy. Strong Lewis acid Fe3+ ions are easily coordinated with Lewis base phytic acid to form a three-dimensional cross-linked network. The addition of NaCl to the coagulation bath resulted in an increase in surface roughness. Therefore, the optimized Fe-PA/CAM have a high porosity of 60.9 % and a roughness of 182 nm, showing superhydrophilicity and underwater superoleophobicity. The pure water permeability is capable of reaching 805.9 L m-2h−1 bar−1. After 3.0h of circulating filtration, a 1000 ppm crude oil-in-water emulsion can reach a recovery rate of 99 %. Compared with PA-Fe modified PVDF membranes prepared by impregnation and blending methods, the permeation attenuation rate of Fe-PA/CAM is reduced by more than 50 %. The coating had strong hydration capacity, verified by in-situ DRIFTS analysis of water adsorption kinetics. Both the Young’s modulus and tensile strength exceeded PVDFM by 1.9 and 1.4 times respectively. The composite membrane exhibits chemical and mechanical stability and shows promise in actual oily wastewater treatment.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"1 1","pages":"133351"},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930945","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

Enhanced co-removal of thallium and ammonium nitrogen via breakpoint chlorination 断点氯化强化铊和铵态氮的共去除

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-09 DOI: 10.1016/j.seppur.2025.133465

Ziyi Deng, Xiaohan Li, Gaosheng Zhang, Guicong Xiao, Yuan Xie, Ru Nie, Shenglin Mai, Jianyou Long, Ziqing Xiao, Ping Zhang, Huosheng Li

{"title":"Enhanced co-removal of thallium and ammonium nitrogen via breakpoint chlorination","authors":"Ziyi Deng, Xiaohan Li, Gaosheng Zhang, Guicong Xiao, Yuan Xie, Ru Nie, Shenglin Mai, Jianyou Long, Ziqing Xiao, Ping Zhang, Huosheng Li","doi":"10.1016/j.seppur.2025.133465","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133465","url":null,"abstract":"Hypochlorite (ClO−)-based chlorination has shown effectiveness in oxidizing and purifying ammonium nitrogen (NH4+-N) and thallium (Tl) individually. However, the co-removal of these contaminants remains understudied. Addressing this gap, our study investigated the behaviors and mechanisms of NaClO-based breakpoint chlorination in oxidizing and removing both Tl and NH4+-N. The interaction among thallous ions (Tl+), NH4+-N and NaClO in wastewater created a synergistic oxidation effect, which led to high removal efficiencies, exceeding 97 % for both Tl and NH4+-N, achieved with a NaClO concentration of 7 mmol/L, across a pH range of 6 to 10 in less than 5 min. Notably, the presence of Tl+, rather than Tl3+ or Tl2O3, significantly enhanced the conversion of hypochlorite alongside NH4+-N. This coupled process generated chloramines and nitroxyl, along with oxygen-independent hydroxyl radicals formation, which further transformed into chloride radicals, dichlorine radical anions, and chlorine oxide radicals. Introducing these highly reactive species into the binary-pollutant system marked a substantial improvement over single-pollutant systems, yielding significantly higher removal efficiencies. These findings shed new light on the role of Tl in breakpoint chlorination for wastewater containing both Tl and NH4+-N.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"41 1","pages":"133465"},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930946","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

Unraveling the origin of high-efficiency performance of CeCu bimetallic quasi-MOFs catalysts for the selective catalytic reduction of NO by CO 揭示了CO选择性催化还原NO的CeCu双金属准mof催化剂高效性能的来源

IF 8.1 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-09 DOI: 10.1016/j.seppur.2025.133369

Xin Sun , Guomeng Zhang , Siyuan Cheng , Fanchen Kong , Weihong Wu , Zhengda Yang , Ye Jiang

{"title":"Unraveling the origin of high-efficiency performance of CeCu bimetallic quasi-MOFs catalysts for the selective catalytic reduction of NO by CO","authors":"Xin Sun , Guomeng Zhang , Siyuan Cheng , Fanchen Kong , Weihong Wu , Zhengda Yang , Ye Jiang","doi":"10.1016/j.seppur.2025.133369","DOIUrl":"10.1016/j.seppur.2025.133369","url":null,"abstract":"<div><div>The selective catalytic reduction of NOx by CO (CO-SCR) offers an effective solution for removing CO and NO in the steel industry without requiring additional reductants. In this study, CeCu-BTC bimetallic MOF precursors were synthesized via solvothermal methods, followed by partial pyrolysis to prepare quasi-CeCu-BTC catalysts. Among these, Ce1Cu4-BTC-350 exhibited the best catalytic performance, achieving 100 % NOx conversion and 90 % CO conversion at 275℃. Remarkably, Ce1Cu4-BTC-350 maintained 100 % NOx conversion and 93.5 % CO conversion even in the presence of 15000 ppm O2, while the addition of H2O mitigated the poisoning effect of SO2. Partial pyrolysis improved the accessibility of active sites and optimally preserved the porous structure of the MOF materials. The synergistic interaction between Cu and Ce enhanced the proportion of adsorbed oxygen on the catalyst surface, improved redox properties, and increased the abundance of reduced species. DFT and experimental results demonstrated a significant improvement in the adsorption capacity of reactive gases by the catalyst. The CO-SCR reaction followed the Langmuir-Hinshelwood mechanism, with *N2O2 identified as a critical intermediate. DFT further revealed that the adsorption of CO after the formation of *N2O2 is the step with the highest energy barrier.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"372 ","pages":"Article 133369"},"PeriodicalIF":8.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931277","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

Fabrication of CoFe2O4/BC composite for efficient degradation of organic pollutants via percarbonate activation: Performance, mechanistic insight, and toxicity assessment CoFe2O4/BC复合材料通过过碳酸盐活化高效降解有机污染物的制备：性能、机理和毒性评估

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-09 DOI: 10.1016/j.seppur.2025.133477

Xianyi Wen, Haihang Tong, Dezhi Shi, Jie Huang, Shuo Xu, Enze Zhou, Jiaying Shi, Kun Fu, Hui Xie

{"title":"Fabrication of CoFe2O4/BC composite for efficient degradation of organic pollutants via percarbonate activation: Performance, mechanistic insight, and toxicity assessment","authors":"Xianyi Wen, Haihang Tong, Dezhi Shi, Jie Huang, Shuo Xu, Enze Zhou, Jiaying Shi, Kun Fu, Hui Xie","doi":"10.1016/j.seppur.2025.133477","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133477","url":null,"abstract":"Advanced oxidation using sodium percarbonate (SPC) is an economical and environmentally friendly method for removing pollutants and treating water bodies. In this study, CoFe2O4 spinel (CF) was loaded onto biochar (BC), as a carrier, to construct a heterogeneous composite catalyst (CoFe2O4/BC). Due to the synergistic interaction between BC and CoFe2O4, CoFe2O4/BC (CFB) effectively and stably activated SPC for removing pollutants from aqueous media. The optimized catalyst (CF/BC = 2:1) CFB-2:1 achieved efficient removal of tetracycline hydrochloride (TC) within 30 min (6.05 and 2.34 times that of BC and pristine CoFe2O4, respectively). The CFB-2:1/SPC system exhibited excellent catalytic performance with variation of the environmental conditions (pH, inorganic anions, humic acids, and water matrices) and good reusability. Quenching experiments and electron paramagnetic resonance (EPR) demonstrated that the degradation of TC in the reaction system involved multiple reactive oxygen species (CO3•−, 1O2, O2•−, and •OH), among which CO3•− and O2•− played important roles. The potential pathways of TC degradation in the system were elucidated via density functional theory (DFT), while the ecological toxicity of the intermediate products was calculated using the T.E.S.T. (Toxicity Estimation Software Tool) method. This work offers novel perspectives on the design of bimetallic catalysts for SPC activation and highlights the potential applicability of this system in remediating of polluted aquatic environments.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931278","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

Bimetallic modified sludge biochar for enhanced peroxodisulfate activation and radical induction 双金属改性污泥生物炭增强过氧二硫酸活化和自由基诱导

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-09 DOI: 10.1016/j.seppur.2025.133328

Hanyu Jin, Zhongxian Song, Yanli Mao, Qun Yan, Haiyan Kang, Pan Chen, Zhenzhen Huang

{"title":"Bimetallic modified sludge biochar for enhanced peroxodisulfate activation and radical induction","authors":"Hanyu Jin, Zhongxian Song, Yanli Mao, Qun Yan, Haiyan Kang, Pan Chen, Zhenzhen Huang","doi":"10.1016/j.seppur.2025.133328","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.133328","url":null,"abstract":"The development of water treatment technologies had been advanced through the induction of directional radical generation. However, despite their promising potential, the uncertain selectivity and structural complexity of these systems have continued to affect the efficiency of pollutant degradation. In this study, peroxodisulfate (PDS) activation and degradation were achieved by combining different bimetallic systems (FeAl, FeNi and FeCu). The results demonstrated that the FeAl-SBC, FeNi-SBC and FeCu-SBC systems achieved degradation rates of over 90 % for tetracycline (TC). And it was confirmed by EPR results that the main contributing radicals in the degradation systems of FeAl-SBC, FeNi-SBC and FeCu-SBC were 1O2, O2•−, •OH and SO4•−. Density Functional Theory (DFT) studies revealed that the constructed Fe-O-Al, Fe-O-Ni and Fe-O-Cu structures exhibited energy gaps of 1.069 eV, 0.423 eV and 0.138 eV, respectively. These energy gaps induced distinct electron-rich environments, which played a critical role in generating different radicals. Under the synergistic effects of the bimetallic systems, the Fe3+/Fe2+ redox cycle was found to promote radical formation. Notably, these systems exhibited a broad scope of application, demonstrating wide adaptability to various organic pollutants and water environments. Based on LC-MS and Fukui function calculations, the degradation pathways of TC were proposed. Overall, these insights significantly enhanced the understanding of bimetallic systems in advanced oxidation processes.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"109 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931279","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

Dehalogenation performance of florfenicol by bimetallic iron-cobalt based on direct electron transfer under electric field 基于电场下直接电子转移的双金属铁钴对氟苯尼考的脱卤性能研究

IF 8.1 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-08 DOI: 10.1016/j.seppur.2025.133451

Haotian Mu, Chuanping Feng, Nan Chen, Weiwu Hu, Boaiqi Zhang, Ning An

{"title":"Dehalogenation performance of florfenicol by bimetallic iron-cobalt based on direct electron transfer under electric field","authors":"Haotian Mu, Chuanping Feng, Nan Chen, Weiwu Hu, Boaiqi Zhang, Ning An","doi":"10.1016/j.seppur.2025.133451","DOIUrl":"10.1016/j.seppur.2025.133451","url":null,"abstract":"<div><div>Dehalogenation of halogenated antibiotics is an effective pretreatment method aimed to eliminate the toxicity. In this study, a novel electrode was developed utilizing single-step electrodeposition for the in-situ generation of bimetallic iron-cobalt nanoparticles on copper foam (CF). The synthesized cathode material (Fe@Co/CF) was utilized for the electrochemical reductive dehalogenation of florfenicol (C12H14Cl2FNO4S, FLO), a representative halogenated antibiotic. The presence of a positive charge on the surface of the bimetallic iron-cobalt was proved by density functional theory (DFT) calculations, enhancing the adsorption of the C-Cl bond and reducing the activation energy. The removal of FLO was ＞99 % under the optimal conditions of 10 mA and pH 6.0 by Fe@Co/CF and the dechlorinating efficiency of FLO was approximately 83 %, which was significantly superior to other cathode materials. Great treatment performance on Fe@Co/CF for other chlorinated antibiotics was demonstrated. The primary mechanism for FLO dehalogenation by Fe@Co/CF was direct electron transfer (DET), which was augmented by the synergistic effect of the bimetallic iron-cobalt. During the electrochemical reductive dehalogenation, FLO was sequentially decomposed to C12H14ClFNO4S and then to C12H14FNO4S, significantly reducing biotoxicity. After practical water treatment and cycles, high treatment efficiency of Fe@Co/CF was maintained. The developed electrode for the dehalogenation of halogenated antibiotics in this study has demonstrated great potential for dechlorinating halogenated pollutants in wastewater.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"372 ","pages":"Article 133451"},"PeriodicalIF":8.1,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143920851","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

Oxygen vacancies engineering in iron-doped nickel molybdate nanorods to accelerate electron transfer for rapid organic pollutants removal 铁掺杂钼酸镍纳米棒的氧空位工程加速电子转移以快速去除有机污染物

IF 8.1 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-08 DOI: 10.1016/j.seppur.2025.133391

Ke Zhu, Rumeng Zhang, Yuheng Yao, Man Zhao, Xiongfei Huang, Zhihan Huang, Yi Yang, Xiaoying Liang, Kai Yan

{"title":"Oxygen vacancies engineering in iron-doped nickel molybdate nanorods to accelerate electron transfer for rapid organic pollutants removal","authors":"Ke Zhu, Rumeng Zhang, Yuheng Yao, Man Zhao, Xiongfei Huang, Zhihan Huang, Yi Yang, Xiaoying Liang, Kai Yan","doi":"10.1016/j.seppur.2025.133391","DOIUrl":"10.1016/j.seppur.2025.133391","url":null,"abstract":"<div><div>Iron-doped metal oxides have been widely used in Fenton-like reactions. However, sluggish conversion of Fe3+/Fe2+ circulation for inevitably forming iron sludge limits its applications. Herein, Fe-doped NiMoO nanorods with heteroatomic metal sites and rich oxygen vacancies (Ov) were prepared for the first time as novel heterogeneous catalysts (Ni/FeNi3-NiMoO). The Ni/FeNi3-NiMoO could rapidly degrade organic pollutants including tetracycline, bisphenol A, ciprofloxacin, sulfamethoxazole, and rhodamine B in 5 min via peroxymonosulfate (PMS) activation. The Ni/FeNi3-NiMoO nanorods achieved a remarkable catalytic rate constant of 0.482 min−1, which was 371-fold higher than that of NiMoO and surpassed previously reported Fe-based catalysts. Besides, the Ni/FeNi3-NiMoO membrane reactor exhibited good adaptability, durability over 10 h, and efficient organic pollutants oxidation capacity. Hydroxyl radical was the primary reactive oxygen species by quenching experiments and electron paramagnetic resonance, which contributed 79.3% in the Ni/FeNi3-NiMoO/PMS system. A catalytic mechanism verified that the synergistic effect of Mo/Ni sites and rich Ov promoted the electron transport speed for a rapid Fe3+/Fe2+ cycle to boost PMS activation. This work provides valuable insights into Fe-doped metal oxides for accelerating the Fe3+/Fe2+ cycle in Fenton-like reactions.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"372 ","pages":"Article 133391"},"PeriodicalIF":8.1,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143920713","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 chiral resolution efficiency by Taylor-Couette flow Taylor-Couette流提高手性分辨效率

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-08 DOI: 10.1016/j.seppur.2025.133458

Dongbo Wang, Shilei Zhou, Yifu Chen, Mingyang Wang, Bowen Zhang, Dandan Han, Jingtao Wang, Junbo Gong

引用次数: 0

Facile construction novel functionalized hyper-crosslinked porous crown-polymers for adsorbing iodine and strontium 结构简单，新型功能化超交联多孔冠状聚合物吸附碘和锶

IF 8.1 1区工程技术

Separation and Purification Technology Pub Date : 2025-05-08 DOI: 10.1016/j.seppur.2025.133445

Xuanbo Liu , Chunfeng Wang , Jun-an Zhang , Ling Li , Jiajia Yang , Yongjing Hao , Shuangshuo Li , Tao Chang , Zheng Zhu , Xiying Fu

{"title":"Facile construction novel functionalized hyper-crosslinked porous crown-polymers for adsorbing iodine and strontium","authors":"Xuanbo Liu , Chunfeng Wang , Jun-an Zhang , Ling Li , Jiajia Yang , Yongjing Hao , Shuangshuo Li , Tao Chang , Zheng Zhu , Xiying Fu","doi":"10.1016/j.seppur.2025.133445","DOIUrl":"10.1016/j.seppur.2025.133445","url":null,"abstract":"<div><div>The appropriate handling of radioactive strontium and iodine waste presents a significant challenge for the sustainable development of the nuclear industry and the preservation of ecological systems. Developing and fabrication of multi-functional integrated polymers for the capture of iodine and strontium represents a highly promising strategy to address the current challenges. Herein, a series of hyper-crosslinked porous polymers, referred as HCPP-Cn, with tunable hydrophobic properties and pore structures were synthesized via Friedel-Crafts alkylation. The pristine HCPP-C0 demonstrated a good iodine vapor adsorption capacity of 2.81 g·g−1, while the hydrophobic HCPP-C8 achieved an aqueous-phase iodine uptake of 1601.87 mg·g⁻1. To facilitate selective Sr2+ capture, dibenzo-18-crown-6 ether was covalently integrated into the HCPPs framework, resulting in HCPP-Crown-Cn. Among these, HCPP-Crown-C0 exhibited the highest Sr2+ adsorption capacity at 48.17 mg·g−1. Mechanistic studies revealed that iodine adsorption is governed by charge-transfer interactions and π-π stacking, whereas Sr2+ sequestration is driven by size-selective coordination with crown ether. This research offers a strategic methodology to designing functional materials for efficient removal of radioactive iodine and strontium.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"372 ","pages":"Article 133445"},"PeriodicalIF":8.1,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931745","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