Separation and Purification Technology最新文献_第7页

Simultaneous mineralization of Cd(II), Pb(II) and As(V) using MgAl-NO3: Performance and mechanism

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-28 DOI: 10.1016/j.seppur.2025.131853

Haoran Wang, Tong Lin, Zian Song, Menghan Huang, Ruifa Chai, Sai An, Yu-Fei Song

{"title":"Simultaneous mineralization of Cd(II), Pb(II) and As(V) using MgAl-NO3: Performance and mechanism","authors":"Haoran Wang, Tong Lin, Zian Song, Menghan Huang, Ruifa Chai, Sai An, Yu-Fei Song","doi":"10.1016/j.seppur.2025.131853","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131853","url":null,"abstract":"Water and soil contaminated by multiple heavy metal cations and anions such as Cd(II), Pb(II) and As(V) constitutes a serious environmental issue due to their toxicity, ubiquity and non-biodegradability. Herein, a MgAl-layered double hydroxide intercalated with nitrate (MgAl-NO3) was successfully fabricated, which showed the maximum mineralization capacities (qm) of 334.45, 1156.25 and 168.63 mg g-1 towards individual Cd(II), Pb(II) and As(V) in aqueous solution, respectively, outperforming most mineralizers reported so far. The mineralization data can be well fitted with the pseudo-second-order kinetic and Langmuir isotherm models. For the co-existence system of Cd(II), Pb(II) and As(V) in solution, the removal efficiency can reach 95 % in 20 h by using MgAl-NO3. Further application of MgAl-NO3 for co-existing heavy metals polluted soil, 79.25 %, 64.75 % and 62.00 % of available Cd, Pb and As in soil were mineralized in only two weeks, respectively. Accompanied by the mineralization of heavy metal cations and anions, the Mg(II) ions can be released from MgAl-NO3 to promote azuki bean seedling growth as fertilizer. Detailed characterization indicated that the Cd(II) was anchored in the laminate of MgAl-NO3 by isomorphic substitution, resulting in the formation of CdAl-LDHs; the Pb(II) was removed as Pb3(CO3)2(OH)2; surface adsorption dominated the mineralization process for As(V) removal. This work paves a new pathway for remediation of the co-existing heavy metal cations and anions in both water and soil.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"59 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055619","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

Advanced C, N and P removal performance and mechanism of municipal wastewater in lab-scale denitrifying filter for generating biogenic manganese oxides

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-28 DOI: 10.1016/j.seppur.2025.131855

Qingfeng Cheng, Yanting Tu, Lichao Nengzi, Xujing Guo, Zhongyou Gong, Erdeng Du, Mingguo Peng

{"title":"Advanced C, N and P removal performance and mechanism of municipal wastewater in lab-scale denitrifying filter for generating biogenic manganese oxides","authors":"Qingfeng Cheng, Yanting Tu, Lichao Nengzi, Xujing Guo, Zhongyou Gong, Erdeng Du, Mingguo Peng","doi":"10.1016/j.seppur.2025.131855","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131855","url":null,"abstract":"In order to cost-effectively remove carbon (C), nitrogen (N) and phosphorus (P) from secondary effluent (SE), a lab-scale denitrifying filter (DF) for generating biogenic manganese oxides (BMOs) was constructed, and its influent was the mixture of real SE and secondary influent (SI). When NH4+-N in the influent rose to around 3.2 mg/L with the improvement of the SI ratio, the effluent COD, filtered total nitrogen (TN) and phosphorus (TP) were 7.80, 0.63 and 0.014 mg/L with the corresponding removal rate (CRR) of 84.72 %, 97.17 % and 95.15 %, respectively. The refractory organics were oxidized and hydrolyzed to biodegradable organics, providing carbon source, and the residual organics were hardly further removed, owing to their extremely poor biodegradability. N was synergistically removed by denitrification coupled with partial-denitrification anammox (PDA), which was confirmed by the fact that the contribution rate of PDA to TN removal was 30.43 % and removing 1 mg TN actually consumed 2.02 mg COD. P was mainly removed by reacting with Mn2+ from the influent or BMOs reduction to form chemical precipitation (Mn3(PO4)2). The presence of the main functional bacteria (manganese oxidizing bacteria (MnOB), anammox, denitrifying and hydrolytic bacteria) and the main functional genes further explained the efficient C, N and P removal and clarified the advanced C, N and P removal mechanism. This novel technique removed C, N and P with extremely high efficiency, extremely low operational cost and no secondary pollution.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"84 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050255","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

Phosphotungstic acid ionic liquid-based 3D foam catalyst achieving full desulfurization efficiency 基于磷钨酸离子液体的三维泡沫催化剂实现全脱硫效率

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-28 DOI: 10.1016/j.seppur.2025.131767

Mei Zhang, Haoxue Huang, Lei Yang, Jun Xiong, Jun Di

{"title":"Phosphotungstic acid ionic liquid-based 3D foam catalyst achieving full desulfurization efficiency","authors":"Mei Zhang, Haoxue Huang, Lei Yang, Jun Xiong, Jun Di","doi":"10.1016/j.seppur.2025.131767","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131767","url":null,"abstract":"The design of integral catalyst material is essential for the industrial application of catalysts, which can ensure the efficiency of catalytic reaction and solve the difficult problem of catalyst separation. In this work, the macroscopic 3D foam catalyst is prepared by simply impregnating the phosphotungstic acid based ion liquid (C14PWIL) on the melamine sponge (MS) and firmly adhering it with polyvinylidene fluoride (PVDF). The 3D network structures of the melamine sponge own high porosity and good crosslinking network, enabling the uniform dispersion of active site. While the addition of PVDF ensures a good combination between C14PWIL and MS. Compared with C14PWIL, the prepared catalyst has the advantages of easy separation from the reaction system and robust mechanical strength. The synthesized catalyst C14PWIL/PVDF-MS exhibits outstanding oxidative desulfurization efficiency and cycle stability, in which full desulfurization efficiency can be realized with O/S ratio higher than 3. Our research results provide a new strategy for the preparation of integral catalysts with superior oxidative desulfurization performance.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"16 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050216","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

Fluorinated LDHs for selective sorption of PFOS: Unveiling the roles of increased hydrophobicity and F-F interactions 用于选择性吸附全氟辛烷磺酸的氟化 LDH：揭示疏水性增强和 F-F 相互作用的作用

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-28 DOI: 10.1016/j.seppur.2025.131851

Ao Xian, Changlong Wei, Zhiwen Tang, Yao Zhang, Qing Wang, Zhiyong Han, Xin Song

{"title":"Fluorinated LDHs for selective sorption of PFOS: Unveiling the roles of increased hydrophobicity and F-F interactions","authors":"Ao Xian, Changlong Wei, Zhiwen Tang, Yao Zhang, Qing Wang, Zhiyong Han, Xin Song","doi":"10.1016/j.seppur.2025.131851","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131851","url":null,"abstract":"Layered double hydroxides have been proved to be effective adsorbents for the removal of per- and polyfluoroalkyl substances (PFASs) from aqueous solutions. In this study, a novel layered double hydroxides modified by perfluorooctyltriethoxysilane (LDHs-PFOTES) was synthesized at room temperature, demonstrating rapid and selective sorption of perfluorooctane sulfonic acid (PFOS). The covalent grafting of fluorosilane groups onto the LDHs surface enhanced hydrophobicity and introduced fluorine functional groups, while preserving the positive charge essential for electrostatic interactions. LDHs-PFOTES removed 97.21 % of PFOS from water within 5 min, with a sorption capacity of 1530.33 mg/g, nearly doubling the capacity of unmodified LDHs (831.79 mg/g). The thermodynamic analysis of PFOS sorption on LDHs-PFOTES revealed that the process is spontaneous and endothermic. LDHs-PFOTES maintained over 90 % PFOS removal efficiency under varying pH levels, ionic strengths, and the presence of competing compounds. Furthermore, the C-F structure on the LDHs-PFOTES enabled fluorine-fluorine (F-F) interactions with PFOS, further improving selective sorption. It was concluded that the combined effects of electrostatic interactions, hydrophobicity, F-F interactions, and ion exchange resulted in the efficient and selective removal of PFOS from water. LDHs-PFOTES demonstrated 95.37 % sorptive efficiency in removing PFOS when treating a mixture of 11 PFAS compounds. Additionally, LDHs-PFOTES effectively desorbed PFOS using a mixed solution of NaCl and methanol, maintaining approximately 95.08 % removal efficiency over three regeneration cycles. This fluorination strategy to modify LDHs offers a novel approach for selectively and efficiently removing PFASs from water.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"22 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050219","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

Preparation of ZIF-8/Fe3O4 modified halloysite nanotubes blended ultrafiltration membranes via magnetic field regulation: Enhanced performance and efficient filler distribution

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-27 DOI: 10.1016/j.seppur.2025.131833

Pan Chen, Shuai Wang, Henan Peng, Siyu Wang, Jingwen Wang, Xiaogang Zhao, Chunhai Chen, Hongwei Zhou

{"title":"Preparation of ZIF-8/Fe3O4 modified halloysite nanotubes blended ultrafiltration membranes via magnetic field regulation: Enhanced performance and efficient filler distribution","authors":"Pan Chen, Shuai Wang, Henan Peng, Siyu Wang, Jingwen Wang, Xiaogang Zhao, Chunhai Chen, Hongwei Zhou","doi":"10.1016/j.seppur.2025.131833","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131833","url":null,"abstract":"A substantial number of fillers tended to deposit and aggregate in the finger-like region of the ultrafiltration membrane (UF) during the phase immersion method, leading a waste of fillers and a significant decrease in various membrane properties. Consequently, effectively regulating the distribution of fillers within the membrane matrix emerged as a critical issue requiring urgent attention. In this study, ZIF-8-modified Fe3O4 halloysite nanotubes (ZIF-8/B-HNTs) were successfully synthesized and blended with PES-C. Utilizing the magnetic field, magnetized and non-magnetized membranes were prepared to investigate the impact of magnetic fields on filler distribution and membrane properties. The results indicated that the magnetic force facilitated the ZIF-8/B-HNTs composites to undergo directional migration towards the membrane surface along the direction of the magnetic field lines within the PES-C matrix, which not only achieved filler enrichment to enhance the utilization rate of fillers but also significantly enhanced various membrane properties. Specifically, the magnetized membrane with 0.5 wt% ZIF-8/B-HNTs composites achieved a maximum pure water flux of 590.4 L/m2h, and the magnetized membrane with 1.5 wt% ZIF-8/B-HNTs composites reduced water contact angle to 47.6° and flux recovery rate up to 89.6 %, while maintaining excellent retention capability for BSA (>95 %). Furthermore, due to the uniform distribution of ZIF-8/B-HNTs composites on the membrane surface, both magnetized and non-magnetized membranes with 1.5 wt% ZIF-8/B-HNTs composites exhibited high adsorption capacities and over 95 % rejection for three anionic dyes (EB, CR, CCB). These finding expanded the application range of UF membranes and provided guidance for precise regulation of membrane microstructures, enhancement of membrane properties and future development.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"150 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044592","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

Microplastics in petrochemical wastewater: A comprehensive review of removal mechanism, influencing factors and effects on wastewater reuse process

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-27 DOI: 10.1016/j.seppur.2025.131832

Lingyu Liu, Yuxiang Shen, Xiaoya Jiang, Xiushan Zhuang, Chen Liu, Jianfeng Pan, Fang Liu

{"title":"Microplastics in petrochemical wastewater: A comprehensive review of removal mechanism, influencing factors and effects on wastewater reuse process","authors":"Lingyu Liu, Yuxiang Shen, Xiaoya Jiang, Xiushan Zhuang, Chen Liu, Jianfeng Pan, Fang Liu","doi":"10.1016/j.seppur.2025.131832","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131832","url":null,"abstract":"The petrochemical industry is regarded as a potential source of microplastics release, and the problem of microplastics pollution caused by it cannot be ignored. Although the treatment processes of petrochemical wastewater treatment plants can remove microplastics to a certain extent, there are still a large number of microplastics flowing out with the effluent. In addition, the unique water quality characteristics of petrochemical wastewater may also significantly hinder the effective removal of microplastics. In addition, the demand for wastewater reuse is increasing, and microplastics may have a negative impact on the wastewater reuse treatment based on membrane separation technology. In this paper, the release pathway of microplastics in petrochemical industry, the migration and transformation mechanism of microplastics in petrochemical wastewater treatment plants, the key factors affecting the degradation efficiency of microplastics in petrochemical wastewater, and the potential impact of microplastics on the reuse process of petrochemical wastewater based on membrane separation technology are discussed in depth. The objective is to provide a scientific basis for the effective prevention and control of microplastic pollution in petrochemical wastewater.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"13 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050260","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

Oilfield-produced water treatment with SiC-coated alumina membranes

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-27 DOI: 10.1016/j.seppur.2025.131841

Guangze Qin, Yiman Liu, Luuk C. Rietveld, Sebastiaan G.J. Heijman

{"title":"Oilfield-produced water treatment with SiC-coated alumina membranes","authors":"Guangze Qin, Yiman Liu, Luuk C. Rietveld, Sebastiaan G.J. Heijman","doi":"10.1016/j.seppur.2025.131841","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131841","url":null,"abstract":"During the extraction of fossil fuels, a complex waste stream is produced simultaneously, also known as produced water (PW). Membrane filtration is a promising technology that can successfully enable the treatment and reuse of PW. Silicon carbide (SiC) membranes are preferred for PW treatment, due to their low (ir)reversible fouling compared to other ceramic membranes. However, full SiC is expensive and thus economically less feasible. Therefore, we established a method for coating SiC on alumina (Al2O3) ultrafiltration membranes, based on low-pressure chemical vapor deposition at 860 °C. In the presented study the fouling resistance and behavior of these novel membranes, with various pore sizes and under different operating conditions, including flux and crossflow velocity, were evaluated. We also used Al2O3 membranes and SiC-coated Al2O3 membranes in constant flux mode to treat real oilfield PW with high salinity (142 mS/cm) and COD (22670 mg/L). Additionally, the fouling mechanisms in the SiC-coated and Al2O3 membranes were analyzed with the help of Focused Ion Beam-Scanning Electron Microscopy imaging. The major findings were that pore blockage served as the initial (irreversible) fouling mechanism and that the (reversible) cake layer, a mixture of organic and inorganic components, dominated the rest of the filtration cycle, where the SiC coated membrane performed better than the original alumina membrane. In addition, it was found that the application of the SiC coating, and the selection of the appropriate pore size (62 nm) and crossflow velocity (0.8 m/s) increased the fouling mitigation, potentially advancing the utilization of ultrafiltration in treating saline PW for resue purposes.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"8 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050275","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

Sustainable in situ extraction of microalgae-derived terpenoids using functionalized silica microparticles 利用功能化二氧化硅微粒原位萃取微藻衍生的萜类化合物

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-27 DOI: 10.1016/j.seppur.2025.131837

Sebastian Overmans, Adair Gallo, Himanshu Mishra, Kyle J. Lauersen

{"title":"Sustainable in situ extraction of microalgae-derived terpenoids using functionalized silica microparticles","authors":"Sebastian Overmans, Adair Gallo, Himanshu Mishra, Kyle J. Lauersen","doi":"10.1016/j.seppur.2025.131837","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131837","url":null,"abstract":"Metabolic engineering of microbes for heterologous isoprenoid production has developed into an established technology. While this green approach for producing high-value chemicals holds tremendous potential, current in situ extraction methods employing biocompatible-solvents such as alkanes or perfluorinated compounds, present technical challenges in large-scale bioreactors. Here, we develop a low-cost solvent-free approach based on silanized silica particles as an alternative to solvent incubation on live microbial cultures. We determine the feasibility and specificity of three differently coated (C11, C16, C18) silica particles to extract nine heterologous terpenoid metabolites from engineered Chlamydomonas reinhardtii algae cultures during cultivation. Extraction efficiencies for all compounds except cedrene were reasonably high with C11- and C16-functionalized particles (C-11: 6–228 %; C16: 6–223 % compared to dodecane), but particularly C18-coated particles demonstrated potential as alternatives to traditional two-phase extractions (12–235 %). While the extraction efficiencies of microparticles were oftentimes lower compared to alkane-solvents, the particles can be directly implemented in larger-scale cultivations where the use of alkanes poses concerns of flammability and emulsion formation. The present study additionally identified the optimum concentration of particles in culture (2 % of total volume) and that four elution steps with ethanol were sufficient to achieve >99 % product recovery, and proves the feasibility of an upscaled extraction of the sesquiterpenoid patchoulol as a representative metabolite in 5 L hanging-bag algae photobioreactors. This study paves the way for a circular bioprocess for terpene harvest from engineered microbes, while allowing for straightforward product recovery (solid–liquid separation) and reuse of functionalized particles over numerous cycles.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"22 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044721","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

Impact of coexisting components on the catalytic ozonation of emerging contaminants in wastewater

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-27 DOI: 10.1016/j.seppur.2025.131847

Miaomiao Tian, Jingjing Chang, Junxiang Ding, Yue Yin

{"title":"Impact of coexisting components on the catalytic ozonation of emerging contaminants in wastewater","authors":"Miaomiao Tian, Jingjing Chang, Junxiang Ding, Yue Yin","doi":"10.1016/j.seppur.2025.131847","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131847","url":null,"abstract":"Catalytic ozonation, a promising advanced oxidation process (AOP), leverages catalysts to activate ozone (O3) into highly reactive oxygen species (ROS) like hydroxyl (HO•) and superoxide radicals (O2•-). These potent oxidants effectively degrade refractory organic pollutants in wastewater. Nevertheless, the presence of complex coexisting ions and organic compounds in real wastewater can significantly hinder the removal efficiency of target pollutants during catalytic ozonation. Consequently, a thorough understanding of how coexisting ions and organics influence the catalytic ozonation process is crucial for optimizing its effectiveness in wastewater treatment. This review delves into the degradation pathways of emerging contaminants (ECs) during catalytic ozonation, considering the influence of these coexisting components. By analyzing interfacial reactions involving catalysts, O3, and coexisting components, this review aims to elucidate the underlying mechanisms and propose strategies to optimize the performance of catalytic ozonation for real wastewater treatment.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"117 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050261","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

Continuous and high flux demulsification of viscous water-in-oil emulsions by superhydrophobic/oleophobic sponges

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-01-27 DOI: 10.1016/j.seppur.2025.131844

Xuekai Jin, Yunjia Wang, Yunpeng Zhang, Zehao Chen, Shouping Xu, Jiang Cheng, Lanfang Wen, Pihui Pi

{"title":"Continuous and high flux demulsification of viscous water-in-oil emulsions by superhydrophobic/oleophobic sponges","authors":"Xuekai Jin, Yunjia Wang, Yunpeng Zhang, Zehao Chen, Shouping Xu, Jiang Cheng, Lanfang Wen, Pihui Pi","doi":"10.1016/j.seppur.2025.131844","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.131844","url":null,"abstract":"The separation of water-in-oil (W/O) emulsions is crucial for addressing resource shortages and environmental protection. Superoleophilic/superhydrophobic materials, owing to their selective wettability, can effectively separate W/O emulsions by low-viscosity oils. However, when dealing with viscous water-in-oil emulsions from oils with high viscosity, challenges such as severe oil adhesion and pore blockage significantly hinder separation performance. In this study, a superhydrophobic/oleophobic sponge was fabricated by introducing “ rod-dot ” Co3O4 nanoparticles onto the sponge’s inner surfaces, followed by fluorination modification. For emulsions prepared with low-viscosity oils (ηO < 1 mPa·s), the sponge achieved a separation efficiency of over 98 % with a permeation flux exceeding 10,000 L·m–2·h–1. Under an applied pressure of 5000 Pa, after continuously treating 400 mL of emulsion, the fluxes for water-in-vegetable oil emulsions (ηV = 59 mPa·s) and water-in-lubricating oil emulsions (ηL = 65 mPa·s) remained above 1207 L·m–2·h–1, with separation efficiencies of 99.49 % and 99.82 %, respectively. These results demonstrate the sponge’s high-efficiency and durable separation performance for water-in-oil emulsions by high-viscosity oils. The superior performance is attributed to the inherent oleophobicity of the material, which suppresses the formation of boundary layers and maintains unobstructed pore channels. This study offers a novel approach for the efficient and durable separation of viscous W/O emulsions, with significant potential in waste oil recovery and fuel purification.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"121 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050267","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