Separation and Purification Technology最新文献

{"title":"Corrigendum to “Functionalized graphene oxide based membranes for ultrafast molecular separation” [Sep. Purif. Technol. 274 (2021) 117969]","authors":"Farooque Ahmed Janjhi, Imamdin Chandio, Ayaz Ali Memon, Zubair Ahmed, Khalid Hussain Thebo, Azhar Ali Ayaz Pirzado, Ayaz Ali Hakro, Muzaffar Iqbal","doi":"10.1016/j.seppur.2025.132603","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132603","url":null,"abstract":"The authors express their regret for not identifying the errors that occurred during the revisions of the aforementioned manuscript. We recognize that <span><span>Fig. 1</span></span>c and <span><span>Fig. 1</span></span>e are not suitable for reported membranes in this manuscript and cannot explain the perfect surface morphology of the as-fabricated membranes, which were added by mistake. Therefore, <span><span>Fig. 1</span></span>c and <span><span>Fig. 1</span></span>e have been corrected in <span><span>Fig. 1</span></span>a–d and should now be interpreted as follows:<figure><span><img alt=\"\" aria-describedby=\"cn0005\" height=\"465\" src=\"https://ars.els-cdn.com/content/image/1-s2.0-S1383586625012006-gr1.jpg\"/><ol><li><span><span>Download: <span>Download high-res image (551KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span><span><span><p><span>Fig. 1</span>. The structural characterization of GO and GO/GE based membranes. (a) GO solution, (b) Top-view, (c) cross-sectional SEM images of GO membranes respectively. (d) GO/GE solution, (e) Top-view and (f) Cross-sectional SEM images of GO/GE membranes respectively.</p></span></span></figure>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736560","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":"Constructing a novel Ti3C2Tx nanocomposite via intercalation of guanidine phosphate to realize selective and effective uranyl extraction","authors":"Miao Lei,&nbsp;Junpeng Guo,&nbsp;Qinkai Chen,&nbsp;Chang Liu,&nbsp;Bolin Li,&nbsp;Ye Li","doi":"10.1016/j.seppur.2025.132771","DOIUrl":"10.1016/j.seppur.2025.132771","url":null,"abstract":"<div><div>There are abundant uranium resources in salt lake brines, but the high salinity background brings huge challenges to the selective extraction of uranyl. In this work, a novel Ti₃C₂T_x nanocomposite was constructed by the intercalation of guanidine phosphate (GP) to achieve the selective and effective uranyl extraction. Characterization analyses showed that the intercalation of GP was driven by ion exchange or electrostatic interaction. At the temperature of 35 °C, the adsorption of GP-Ti₃C₂T_x quickly reached equilibrium after 2 h (q_max = 270.7 mg/g). Mechanism investigations showed that the adsorption of uranyl on GP-Ti₃C₂T_x mainly included electrostatic attraction of oxygen-containing functional groups, chemical reduction by GP, and the coordination of phosphate and guanidine groups. Noteworthy, the adsorption capacity of GP for trace uranium (296.3 ± 13.8 μg/L) in actual brine was 806.3 μg/g. Even if the concentrations of coexisting Na⁺, K⁺, Mg²⁺, Ca²⁺, VO₄³⁻ and SO₄²⁻ far exceeded the concentration of salt lake sample, GP-Ti₃C₂T_x exhibited satisfactory selectivity. Overall, this novel Ti₃C₂T_x nanocomposite provides new insights into the extraction of uranium from salt lake brines.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"366 ","pages":"Article 132771"},"PeriodicalIF":8.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734448","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":"Poly(vinyl alcohol)/poly(ethylene glycol) ion-solvating membrane with NiFe-LDH for high-performance alkaline water electrolysis","authors":"Wei Xiao ,&nbsp;Xi Luo ,&nbsp;Yongnan Zhou ,&nbsp;Jiajun Meng ,&nbsp;Min Wang ,&nbsp;Yuyu Liu ,&nbsp;Jinli Qiao","doi":"10.1016/j.seppur.2025.132769","DOIUrl":"10.1016/j.seppur.2025.132769","url":null,"abstract":"<div><div>Novel diaphragms based on the concept of ’ion-solvating membranes’ have garnered increasing attention for alkaline water electrolysis (AWE). In this study, a novel ion-solvating membrane was developed by incorporating nickel–iron layered double hydroxide (NiFe-LDH) and poly(ethylene glycol) (PEG) into a poly(vinyl alcohol) (PVA) matrix. Through dual regulation of LDH and PEG content, the physicochemical characteristics including electrolyte uptake and retention, swelling behavior, hydrophilicity, and ion conductivity, are improved significantly. At a PEG content of 10 % and NiFe-LDH content of 5 %, the membrane (PE₁₀L₅) exhibited satisfactory hydrophilicity (26.32°), along with high electrolyte uptake (161.23 %) and high conductivity (51.63 mS/cm). Alkaline water electrolyser utilizing the PE₁₀L₅ membrane demonstrated an ultra-low ohmic impedance (0.0415 Ω·cm²) and a high current density of 900 mA cm⁻² at a cell voltage of 2 V in 30 % KOH at 80 °C. Besides, a possible degradation mechanism was supposed to be based on a long-term stability test. This study presents a new direction and opportunity for the development of high-performing ion-solvating membranes.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"366 ","pages":"Article 132769"},"PeriodicalIF":8.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734447","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 pressurized electro-osmotic dewatering technology for slurry","authors":"Liming Hu, Abdou Latif Imorou, Zhixin Chen, Henglin Xiao","doi":"10.1016/j.seppur.2025.132768","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132768","url":null,"abstract":"Efficient slurry dewatering is critical in numerous engineering and environmental applications. Traditional electro-osmosis methods often struggle with uneven electrical field distribution and electrode corrosion, limiting their performance. To address these challenges, this study presents an enhanced pressurized electro-osmotic dewatering (EPEOD) technology featuring a three-electrode array configuration and a fabric electrode (FE) material. This configuration offers bi-directional water migration, superior corrosion resistance, and uniform electric current distribution, enhancing dewatering efficiency significantly. Experiments were conducted using slurry samples of bentonite and kaolin in varying proportions to assess the variation in dewatering performance and soil properties. The findings demonstrated that the proposed technique significantly improved water removal, reducing the initial moisture content from 325 % to a final moisture content of 94.3 % for a 100 % bentonite sample. This performance was notably better than that of other methods, such as mechanical dewatering (MD), electro-osmotic dewatering (EOD), and pressurized electro-osmotic dewatering (PEOD) with electrode reversal (ER) technique with a final water content of 130.4 %. The electrode array configuration and the fabric electrode minimize corrosion and reduce electrical potential loss at the electrode-soil interface. Ion concentration profiles indicated that Ca²⁺ ions are primarily responsible for the transportation of pore water toward the cathode. The EPEOD process was shown to alter soil properties, including reductions in liquid limits (LL) and plasticity indices (PI). Overall, this study highlights the effectiveness of the proposed novel EPEOD technique in enhancing slurry dewatering performance by implementing a three-electrode array configuration and a fabric electrode material.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"102 4 Pt 1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734446","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":"Dual-active-site engineering of urea-based ionic polymer towards enhanced synergistic catalytic performance of carbon dioxide fixation","authors":"Ya-Li Wan ,&nbsp;Ying Chen ,&nbsp;Hu Wang ,&nbsp;Yi-Zhu Lei ,&nbsp;Li-Li Wen ,&nbsp;Shenglai Zhong","doi":"10.1016/j.seppur.2025.132765","DOIUrl":"10.1016/j.seppur.2025.132765","url":null,"abstract":"<div><div>Bifunctional catalysts featuring synergistic hydrogen-bond donor (HBD) and halogen anion nucleophile functionalities hold substantial promise for the catalytic conversion of carbon dioxide (CO₂). However, the rational design of such solid catalysts at the molecular level is yet to be comprehensively elucidated. In this proof-of-concept study, we synthesized a series of porous ionic polymers (PIPs). These PIPs integrate urea groups and pyridinium bromide as cooperative moieties to promote the conversion of CO₂ with epoxides. Through meticulous adjustment of the chemical structure of urea-based monomers, we were able to regulate the relative spatial positioning between neighboring urea and pyridinium salt units within the PIPs. Experimental results revealed that the spatial arrangement of these partners within PIPs not only influences the spatial distance between dual-active sites, but also affects the HBD ability of the urea groups, which subsequently impacts catalytic performance. The optimal catalyst, UPIP-1, distinguished by the placement of the urea group in the <em>ortho</em>-position of the pyridinium salts, showcased the highest HBD ability and the closest dual-active-site distance, resulting in the highest catalytic activity. Specifically, the activity of UPIP-1 was 2.1-fold higher than that of PIPs with the longest dual-site distance and 2.4-fold higher than that of PIPs lacking HBD functionalities. Moreover, UPIP-1 displayed exceptional catalytic performance, broad substrate tolerance, high stability, and recyclability under mild conditions. As a highly effective solid catalyst, UPIP-1 also efficiently catalyzed the cycloaddition reaction, achieving a remarkable yield of 94.3 % under simulated flue gas conditions (15 % CO₂ and 85 % N₂). This study elucidates the molecular-level correlation between spatial arrangement of cooperative sites and catalytic performance in urea-based bifunctional systems, thereby offering a valuable reference for the rational design of high-efficiency bifunctional catalysts for CO₂ conversion.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"366 ","pages":"Article 132765"},"PeriodicalIF":8.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734450","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":"Dual contribution of recyclable oxidants and generated superoxide anion (O2–) for the selective recycling of spent LiFePO4 batteries","authors":"Xueqi Ren,&nbsp;Xiang Hu,&nbsp;Bingyan Zhang,&nbsp;Junting Chen,&nbsp;Ran Mo,&nbsp;Mengqi Gong,&nbsp;Shun Yang","doi":"10.1016/j.seppur.2025.132685","DOIUrl":"10.1016/j.seppur.2025.132685","url":null,"abstract":"<div><div>Hydrometallurgy involving acidic and oxidative chemicals is currently the main lithium extraction technology for the selective recycling of spent LiFePO₄ (LFP). However, the excessive use of chemicals is a major concern in hydrometallurgy, leading to a significant rise in operational costs and environmental impact. Herein, sodium phosphomolybdate (PMS) with Keggin-type anion [PMo₁₂O₄₀]³⁻ is employed as an efficient and recyclable oxidant to achieve selective Li extraction from spent LFP. After oxidizing LiFePO₄ to FePO₄, reduced PMS could be re-oxidized by activating O₂ to superoxide anion (^<img>O₂^–), causing PMS to be reusable. The unique oxidation of PMS and in situ generated ^<img>O₂^– synergistically contributes to lithium ions leaching, resulting in a high Li extraction efficiency (96.79 %) with a relatively low PMS/Li (0.1:1). The PMS solution which was generated by adjusting the pH can still maintain a high Li extraction efficiency (&gt;91 %) even after being recycled ten times. This recyclable oxidant and in-situ generation of ^<img>O₂^– facilitates rapid and efficient lithium extraction, offering significant economic benefits and highlighting its potential as a comprehensive solution for spent LFP management.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"365 ","pages":"Article 132685"},"PeriodicalIF":8.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734444","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":"Optimized electrochemical recovery of Lithium-Ions from spent battery cells using carbon-coated lithium-iron-phosphate","authors":"Stefanie Arnold, Lei Wang, Rudi Mertens, Sascha Wieczorek, Volker Presser","doi":"10.1016/j.seppur.2025.132770","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132770","url":null,"abstract":"Lithium-ion batteries play a crucial role in powering electric vehicles and portable electronics, making them indispensable in modern technology and driving a significant increase in global lithium demand. With more and more batteries reaching their end of life and the challenges of lithium extraction, including rising prices, geopolitical constraints, and environmental concerns, the efficient recovery of lithium from spent battery cells is crucial for sustainable battery recycling. While state-of-the-art battery recycling focuses mainly on pyro and hydrometallurgical methods, electrochemical recycling methods can be an environmentally friendly, energy-efficient, and cost-effective alternative. This study optimizes an energy-efficient electrochemical method for selective LiCl extraction from leaching solutions derived from cathode materials of typical battery cell formats (LCO). This places our electrochemical separation within the hydrometallurgical processing of spent battery materials (black mass) and prior to subsequent lithium refining steps. Applying carbon-coated LFP electrodes for selective lithium recovery yielded an average uptake capacity of 11.4 mg_Li g_LFP/C^-1 over 300 cycles, maintaining a significant discharge capacity (30 mAh g⁻¹) after 500 cycles.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"36 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734449","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":"Efficient alcoholysis of waste rigid polyurethane foam using MIL-101(Fe) catalyst","authors":"Lijun Xu, Yang Chen, Zixuan Liu, Zike Shao, Fanzeng Gao, Kunqi Gao, Chengyao Teng, Li Zhang, Peiyuan Xiao, Guanghan Song, Qing Huang, Wenyi Yuan","doi":"10.1016/j.seppur.2025.132764","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132764","url":null,"abstract":"A considerable quantity of rigid polyurethane foam (RPUF) waste is generated on an annual basis as a consequence of the dismantling of refrigerators across the globe. In this study, waste RPUF from refrigerators was converted into recycled polyols by efficient alcoholysis, catalysed by a metal–organic framework (MOF). The experimental findings indicated that the utilisation of 5 wt% MIL-101(Fe) as a catalyst at 195 °C for a period of four hours resulted in a polyol yield of 78.3 %. Ligand modulation enabled the formation of a spatial structure within MIL-101(Fe), thereby facilitating the intercalation of polymers. This structure provided a supportive framework for domain-specific catalysis within the pores, thereby facilitating targeted catalytic alcoholysis of polyurethane. The viscosity of the polyol catalytically recovered using MIL-101(Fe) was maintained at approximately 670 mPa·s, and the hydroxyl value was maintained at over 270 mgKOH/g, which represent significantly improved values in comparison to those obtained through the traditional chemical alcoholysis method. Furthermore, the yield of recovered polyols over MOF catalysts remained above 65 % after nine cycles. It is a viable proposition to utilise recycled polyols in the synthesis of RPUFs in lieu of virgin polyols. The flexural strengths of the prepared RPUFs ranged from 0.257 to 0.355 MPa, and the water absorption ranged from 0.03 % to 0.08 %. thereby offering a novel approach to the treatment of rigid polyurethane waste.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"102 4 Pt 1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734455","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":"Prediction of parameters and simulation of the process for boron isotope separation","authors":"Zhongfeng Geng ,&nbsp;Zhenhan Wang ,&nbsp;Cong Xiao ,&nbsp;Guochao Yang ,&nbsp;Hao Gong","doi":"10.1016/j.seppur.2025.132763","DOIUrl":"10.1016/j.seppur.2025.132763","url":null,"abstract":"<div><div>High − abundance boron isotopes are “bottleneck − restricting” products in fields such as the nuclear industry, nuclear medicine and semiconductor manufacturing. Chemical exchange distillation with anisole as complexing agent is a promising boron isotope separation technology. Due to the lack of key physical properties of boron isotopes and their corresponding complexes, there was not a rigorous separation process model reported in literature. The complex conformation and enthalpy change was investigated with Density Functional Theory (DFT) based on the MP2/6-311++G(<em>d,p</em>) group using solvation effect. The Henry’s coefficients of BF₃ in anisole and complexes were predicted using the COSMO-RS model, the values were 0.2847 (¹⁰BF₃), 0.2847 (¹¹BF₃) and 2.2909 (¹⁰BF₃), 2.2910 (¹¹BF₃) respectively, indicating that boron trifluoride was mainly dissolved in anisole rather than in complexes. The equilibrium constants of exchange reaction in anisole at various temperature were necessary and obtained by analyzing the resonant frequency. Then a rigorous model of the chemical exchange distillation process insisting of exchange column, complexation reactor, and cracking reactor was established. The appropriate operating conditions are as follows: the temperature of the complexation reactor is 25 ℃, the temperature of the low − temperature cracking reactor is 110 ℃, and the temperature of the high − temperature cracking reactor is 170 ℃. Under the appropriate operating conditions, the specific heating energy consumption for producing ¹⁰BF₃ products with abundances of 85 %, 95 %, and 99 % is 6.90 × 10⁵ kJ/t, 7.41 × 10⁵ kJ/t, and 1.42 × 10⁶ kJ/t respectively, and the yields are 71.76 %, 65.27 %, and 56.32 % respectively. Furthermore, a vacuum deep − cracking method was proposed to obtain ¹¹BF₃ with an abundance of 99.9 %, which overcame the back-mixing caused by the reused anisole.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"366 ","pages":"Article 132763"},"PeriodicalIF":8.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734451","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":"Improved efficiency in conductive heating vacuum membrane distillation with polyurethane based hydrogels","authors":"Fei Han,&nbsp;Jiarui Zhang,&nbsp;Tianyu Liu","doi":"10.1016/j.seppur.2025.132731","DOIUrl":"10.1016/j.seppur.2025.132731","url":null,"abstract":"<div><div>Membrane distillation is an emerging desalination technique that utilizes thermal membrane coupling; however, traditional processes experience temperature polarization due to heated feed, which diminishes flux. Recent advancements in local heating technologies, such as thermally conductive vacuum membrane distillation (CH-VMD), have demonstrated potential in enhancing flux. Nevertheless, the stable structure of water molecules requires substantial heat energy for evaporation, limiting improvements in flux. To tackle this, we integrated tailored hydrogels at the thermal conducting layer-feed interface within the CH-VMD system, optimizing water evaporation and reducing its enthalpy. Three polyurethane-based hydrogels were developed and characterized. The effect of these hydrogels on water evaporation efficiency in the CH-VMD system was examined, alongside variations in flux and salt rejection across different brine concentrations, while also assessing thermal efficiency and specific energy consumption. Raman spectroscopy confirmed the presence of intermediate water in the hydrogel. Differential scanning calorimetry indicated that the hydrogel decreased water’s evaporation enthalpy by 51 %. The CH-VMD system employing hydrogels made from polyvinyl alcohol, sodium alginate, and carboxylated carbon nanotubes achieved a permeation flux of 21.4 L/m²·h when treating 3.5 wt% high-salinity water, marking a 96.2 % increase in flux, an 8.3 % rise in thermal efficiency, and a 48.2 % reduction in specific energy consumption compared to conventional CH-VMD. Even with brine concentration raised to 10 wt%, the permeate flux was 19.6 L/m²·h, achieving a rejection exceeding 99.5 %. The mechanism employs hydrogels to increase the proportion of intermediate water with weak hydrogen bonds, facilitating its escape. Additionally, the –COOH group bonds with –OH, reducing thermal resistance and enhancing heat transfer, allowing for greater heat absorption for evaporation and higher flux. These findings demonstrate that integrating hydrogels significantly enhances the CH-VMD system’s efficiency for treating high-salinity water.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"365 ","pages":"Article 132731"},"PeriodicalIF":8.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724987","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}