Chemical Engineering Science最新文献

{"title":"Mechanochemical CuS-Modified Mn3Fe2Ox for mercury removal and sulfur resistance","authors":"Shilin Zhao ,&nbsp;Xinlin Wang ,&nbsp;Yuxin Qian ,&nbsp;Haitao Hu ,&nbsp;Zhiqiang Sun","doi":"10.1016/j.ces.2026.123560","DOIUrl":"10.1016/j.ces.2026.123560","url":null,"abstract":"<div><div>The efficient removal of elemental mercury Hg⁰ from coal-fired flue gas remains a critical challenge in air pollution control. In this work, a sulfur-resistant adsorbent was developed by introducing CuS into Mn₃Fe₂Ox through mechanochemical method. Experimental evaluation, material characterization, and density functional theory calculations were combined to elucidate the inhibitory effect of SO₂ on Mn₃Fe₂O_x and the enhanced sulfur resistance of CuS-modified Mn₃Fe₂O_x (CuS/Mn₃Fe₂O_x). Oxygen vacancies (O_v) are identified as the primary active sites in Hg⁰ removal process for Mn₃Fe₂O_x. The presence of SO₂ competes for O_v, and weakens the role of lattice oxygen (O_l) in Hg⁰ adsorption, which facilitates HgSO₄ formation via interactions among SO₂, Hg²⁺, and active oxygen (O_l and adsorbed oxygen (O_α)). Consequently, the Hg⁰ removal efficiency of Mn₃Fe₂O_x decreases from 97.3% without SO₂ to 88.3% with SO₂, where Hg⁰ oxidation escape remains dominant. The CuS modification induces lattice distortion and increases O_v density, while Cu serves as sacrificial sites against SO₂ and S incorporation improves Hg⁰ affinity. Therefore, (0.5–2) CuS/Mn₃Fe₂O_x achieves over 96% Hg⁰ removal efficiency under 1000 ppm SO₂, predominantly by adsorption at an optimized composition. These findings provide mechanistic insights and technical guidance for designing metal oxide-based adsorbents with high Hg⁰ removal efficiency and strong sulfur resistance.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123560"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"rCFD-DEM modelling of the bi-dispersed dense particle-gas reacting flow in a bubbling fluidised bed: from spherical to non-spherical","authors":"Panxing Kang,&nbsp;Dan Xu,&nbsp;Yansong Shen","doi":"10.1016/j.ces.2026.123477","DOIUrl":"10.1016/j.ces.2026.123477","url":null,"abstract":"<div><div>The dense non-spherical particle-gas reacting flow has been practised in many industry sectors; and its reactive computational fluid dynamics - discreate element method (rCFD-DEM) has been a longstanding challenge. In this study, our previously proposed smooth coarse-grained (CG) rCFD-DEM model has been fully extended from spherical to non-spherical for modelling dense non-spherical particle-gas reacting flow systems through proposing a novel non-spherical particle conduction model and incorporating the cutting-edge superquadric particle (SQP) method. The model is comprehensively verified and validated by comparing the simulated results with the data from the experimental measurements. The model effectiveness is verified, proving that the proposed smooth CG-SQP-rCFD-DEM with a coarse-grained ratio of 2 not only shows the accurate numerical simulation results but also significantly reduces the computational costs by 93.58% under the given conditions. Then, the model has been applied to clarify how char particle shape impact on the in-reactor flow-thermal-reactive performances in a dense bi-dispersed non-spherical particle-gas bubbling fluidised bed (BFB) char combustor. Results indicate that the heat of reaction and radiation dominate the heat transfer process in the BFB char combustor, and non-spherical char particles with a lower sphericity tend to present a higher thermal and reactive performance. This work provides a cost-effective tool for understanding and optimising the dense non-spherical particle-gas reacting flow systems.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123477"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CFD-enhanced co-design framework of industrial-scale multi-stage coaxial swirling lance","authors":"Hongshi Yu,&nbsp;Shiliang Yang,&nbsp;Hua Wang","doi":"10.1016/j.ces.2026.123543","DOIUrl":"10.1016/j.ces.2026.123543","url":null,"abstract":"<div><div>The Multi-stage Coaxial Swirl Immersed Top-Blowing Lance (MSCSI-TBL) is the key equipment in Top Submerged Lance (TSL) technology. In the current work, a numerical model based on the Reynolds-average equations was developed to simulate the characteristics of Coaxial Swirling Jet (CSJ) induced by MSCSI-TBL, and the key findings are as follows. <strong>(i) Mechanism of CSJ induced by MSCSI-TBL:</strong> The flow undergoes expansion within both the swirling and mixing zones, converting pressure energy into kinetic energy, as evidenced by increasing axial velocity and decreasing pressure, density, and temperature. In the mixing zone, the high-velocity region migrates inward due to centrifugal force and the entrainment effect of the high-speed outer jet. <strong>(ii) Lance Design Insights:</strong> A novel criterion based on the blade set angle and the mass-averaged swirl angle is proposed to evaluate the swirling completeness. Given the fundamental difference between confined jets in liquid pools and free jets, key parameters like mixing zone length must be designed based on a gas–liquid system. Consequently, increasing the final-stage blade height and number offers limited swirling enhancement but significantly reduces swirl efficiency. <strong>(iii) Performance Characterization of CSJ:</strong> axial total pressure and moment of momentum quantify jet impact and shear ability; a modified swirl number addresses circumferential nonuniformity; and total pressure loss with swirl efficiency characterize energy dissipation and flow quality. Crucially, the moment of momentum reveals a near-constant tangential stirring capacity in the mixing zone, offering deeper insights into the limitations of relying solely on the swirl number. The findings of current work offer valuable insights into the design and optimization of MSCSI-TBL in industrial applications.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123543"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and mechanistic insight into spherical Co-agglomeration based on salt-induced liquid–liquid separation","authors":"Pingping Cui ,&nbsp;Ling Zhou ,&nbsp;Qiuxiang Yin","doi":"10.1016/j.ces.2026.123559","DOIUrl":"10.1016/j.ces.2026.123559","url":null,"abstract":"<div><div>A cleaner and more efficient method for preparing multi-component spherical co-agglomerates was developed based on salt-induced liquid–liquid separation (SI-SCA) technique in this work. A three-step strategy for spherical co-agglomeration was proposed to rapidly screen suitable organic solvent–drug systems by phase separation experiments and molecular simulation. The wettability of organic solvents on crystal surfaces was evaluated through calculations of isosteric adsorption heat, enabling the selection of systems favorable for spherical agglomeration. After verification, appropriate combinations of drugs and solvent systems were identified for the preparation of multi-component spherical co-agglomerates. Using aspirin, paracetamol, celecoxib and mannitol as model compounds, suitable organic solvents for spherical co-agglomeration were screened from methanol, ethanol, <em>n</em>-propanol, isopropanol and acetone. Using SI-SCA technique, the two-component and three-component spherical co-agglomerates of aspirin, paracetamol, and celecoxib were prepared in water–<em>n</em>-propanol/isopropanol/acetone–NaCl systems. The particle size of the co-agglomerates could be effectively tuned by adjusting experimental parameters such as stirring rate. Furthermore, spherical co-agglomerates with stable and controllable component contents were obtained by modifying the initial feeding concentration of multi-component drugs. The formation mechanism of multi-component spherical co-agglomerates was comprehensively determined by combining real-time monitoring via Process Analytical Technology (PAT) and specific analytical methods including PXRD and SEM.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123559"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel sustainable polymer/carboxymethyl cellulose/metal sulfide nanocomposite for clean water production, water retention","authors":"Asmaa A. Atwan ,&nbsp;Ibrahim M. El-Mehasseb ,&nbsp;Naser Talha ,&nbsp;Nagi M. El-Shafai","doi":"10.1016/j.ces.2026.123534","DOIUrl":"10.1016/j.ces.2026.123534","url":null,"abstract":"<div><div>A sustainable nanocomposite (NCP) was developed for pollutant remediation in complex aqueous and soil environments. A novel NCP was synthesized using naturally derived biochar and carboxymethyl cellulose (CMC). Zinc sulfide and calcium sulfide nanoparticles (ZnS/CaS NPs), incorporated into the Carbopol/CMC framework with urea as a nitrogen source, were engineered to enhance pollutant removal, water absorption, and nutrient delivery to soils. The NCP demonstrated high photocatalytic activity, achieving degradation efficiencies of 48.7%, 89.7%, 83.3%, and 95% for MB. It was 16.8%, 26%, 64.5%, and 81% for Rh.B, and it was 91.6%, 87.9%, 66.5%, and 82.3% for MO under Vis, Vis-NaOH, UV, and UV-NaOH, respectively, after 120 min. Additionally, moxifloxacin (Moxi.) degradation under UV light reached 87.7% within 120 min, while adsorption efficiencies of the NCP were 74.6%, 34.2%, 33.3%, and 60.5% for MB, Rh.B, MO, and Moxi., respectively. While the adsorption efficiency on the surface NCP was 74.6%, 34.2%, 33.3%, and 60.5% for MB, Rh.B, MO, and Moxi, respectively. The incorporation of CMC into Carbopol significantly enhanced the nanocomposite’s water-holding and retention properties by forming a hydrogel-like network that can store and gradually release water. With its large specific surface area, high adsorption and photocatalytic performance, and favorable optical characteristics, the developed NCP represents a promising, eco-friendly material for clean water applications and sustainable agricultural enhancement.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123534"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alternating magnetic field-driven electron transfer at metal-oxide interfaces enables synergistic dual-pathway catalysis for dry reforming of methane","authors":"Xiaoge Lu ,&nbsp;Zhuangzhuang Zhang ,&nbsp;Xiang Liu ,&nbsp;Yaxin Jing ,&nbsp;Yurong Yin ,&nbsp;Xinyu Qi ,&nbsp;Liping He ,&nbsp;Chengyi Dai ,&nbsp;Xiaoxun Ma","doi":"10.1016/j.ces.2026.123506","DOIUrl":"10.1016/j.ces.2026.123506","url":null,"abstract":"<div><div>Lowering reaction temperature and improving catalyst stability are two major technical challenges that restrict the industrial application of the dry reforming of methane (DRM). Here, we synthesized an inverse-structured magnetic core–shell catalyst (NiCo@NiCoO_x@C) and applied it to DRM reaction driven by a magnetic induction heating (MIH) system. At a bed temperature of 550 °C, Ni₁Co₁@NiCoO_x@C achieved nearly 90% conversion of CH₄ and CO₂. Compared with conventional resistive heating (RH), it reduced the required bed temperature by 250 °C and increased stability by a factor of 2.2. In the MIH system, DRM reaction proceeds via a dual pathway, mediated by HCOO* and CH_xO*. Owing to the skin effect, the alternating magnetic field (AMF) promotes electron transfer at the metal-oxide (NiCo/NiCoO_x) interface, modulates interfacial electron distribution to enhance CO₂ adsorption and activation at oxygen vacancies while suppressing CO adsorption, and simultaneously facilitates hydrogen spillover and lattice oxygen cycling, significantly accelerating reaction kinetics and improving catalyst stability. This work provides new insights and strategies for efficiently driving DRM at low temperatures, which is of great significance for advancing the industrial application of DRM.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123506"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microwave-assisted sol-gel synthesis of Mg/W codoped TiO2 nano catalysts for dual applications in binary dye degradation and dimethoate pesticide detection","authors":"Sandhya Rani Nayak ,&nbsp;Bala Venkata Sailaja Budati ,&nbsp;Siva Rao Tirukkovalluri ,&nbsp;Sai Supriya Singupilla ,&nbsp;Samuel Chufamo Jikamo ,&nbsp;Nageswararao Kadiyala ,&nbsp;Winnie Teja Dokka","doi":"10.1016/j.ces.2026.123507","DOIUrl":"10.1016/j.ces.2026.123507","url":null,"abstract":"<div><div>The present study aims to establish a simple and rapid microwave-assisted sol–gel route for the synthesis of uniform and well-defined magnesium (Mg) and tungsten (W) co-doped TiO₂ Nano catalysts with enhanced visible-light activity. Mg doping narrows the band gap, while W doping promotes electron trapping and suppresses charge recombination, resulting in synergistically improved photocatalytic and electrochemical performance within a single, structurally stable material. Structural assessments, including Powder X-ray Diffraction (confirming the anatase phase), Transmission Electron Microscopy (revealing a particle size of 5.10 nm), Brunauer-Emmett-Teller surface area analysis (166.4 m²/g), and Scanning Electron Microscopy (examining the Spherical morphology), were conducted. The catalysts were further evaluated for optical characteristics: UV–vis diffuse reflectance spectrum (indicating an energy gap of 2.48 eV), EDAX verified elemental incorporation, and electrochemical analyses (EIS) PL, XPS, VB-XPS confirmed efficient charge transfer and dopant integration. Substitutional doping of dopants into the TiO₂ lattice was confirmed through X-ray photoelectron spectroscopy and Fourier Transform Infra-Red analysis. The thermal behaviour and stability were evaluated by TGA/DTA and DTG analyses, confirming that the compound is thermally stable up to 800 °C. Under visible light, MWT3M3 showed remarkable photocatalytic activity, degrading 97 % of Amido Black 10B and 98 % of Rhodamine B within 60 min. Cyclic voltammetry studies under dark and light conditions demonstrated its excellent electrochemical sensing capability toward Dimethoate in Solanum lycopersicum. The modified glassy carbon electrode exhibited stable redox behaviour and high diffusion coefficients, enabling sensitive and reproducible pesticide detection, demonstrating MWT3M3 as an efficient nanocatalyst for environmental remediation and electrochemical sensing.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123507"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-dimensional electro-fenton system packed with red-mud based NiO particle electrode for the enhanced removal of lomefloxacin hydrochloride","authors":"Youlian Zhu ,&nbsp;Guangtao Wei ,&nbsp;Jun Xiao,&nbsp;Linye Zhang,&nbsp;Zhiwei Xie,&nbsp;Chengfeng Wei","doi":"10.1016/j.ces.2026.123569","DOIUrl":"10.1016/j.ces.2026.123569","url":null,"abstract":"<div><div>In this work, red mud-based NiO particle electrodes (NiO/RM PEs) were successfully synthesized via a simple impregnation-calcination method and applied in a three-dimensional electro-Fenton (3DEF) system for the degradation of lomefloxacin hydrochloride (LOMH). The characterization results confirmed that the NiO/RM PEs were successfully synthesized. Under the optimal reaction conditions of NiO/RM PEs of 5.32 g/L, current density of 6.0 mA/cm², aeration rate of 4.0 L/min, initial pH of 6.55, and Na₂SO₄ dosage of 6.3 mmol, the removal ratio of LOMH reached 83.96%. Electrochemical analyses (CV and EIS) demonstrated that the NiO/RM PEs exhibited low charge-transfer resistance and enhanced electrocatalytic activity. Quenching and EPR experiments revealed that ·OH, ·O₂⁻, and ¹O₂ were generated, with ¹O₂ playing a dominant role in the degradation process. Furthermore, a possible electrocatalytic mechanism for the LOMH degradation was proposed. According to the DFT calculation and LC-MS result, three possible degradation pathways of LOMH were proposed. Additionally, the NiO/RM PEs maintained a LOMH removal efficiency of approximately 78% after five consecutive cycles, indicating excellent reusability and stability. Overall, this study not only achieves the value-added utilization of red mud but also provides an efficient, reusable, and sustainable solution for the treatment of antibiotic-contaminated wastewater.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123569"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 desorption catalyzed by carboxyl-functionalized imidazolium ionic liquids: an effective strategy for energy-saving amine-based CO2 capture","authors":"Xiaowen Zhang ,&nbsp;Haiwei Xie ,&nbsp;Yi Peng ,&nbsp;Yang Luo ,&nbsp;Shijian Lu ,&nbsp;Peng Jiang ,&nbsp;Siyan Ai ,&nbsp;Fangfang Zhao ,&nbsp;Kuiyi You ,&nbsp;He’an Luo","doi":"10.1016/j.ces.2026.123546","DOIUrl":"10.1016/j.ces.2026.123546","url":null,"abstract":"<div><div>Reducing the solvent regeneration energy consumption is crucial for the large-scale implementation of amine-based CO₂ capture technology. Herein, this study developed six carboxylic acid-functionalized imidazolium-based ionic liquid (IL) catalysts ([HOOCMIM][PF₆], [HOOCMIM][HSO₄], [HOOCMIM][BF₄], [HOOCMIM]₃PW₁₂O₄₀, [HOOCMIM]₃PMo₁₂O₄₀, and [HOOCMIM]₄SiW₁₂O₄₀), and applied them in catalytically regenerating the 5 M CO₂-loaded monoethanolamine (MEA) solution at 90 °C. All IL catalysts accelerated CO₂ desorption, with [HOOCMIM][PF₆] providing the highest catalytic activity. When the dosage was 2 wt%, [HOOCMIM][PF₆] improved the rate of CO₂ desorption by 200%, and increased the amount of released CO₂ by 221%. It also cut the regeneration energy requirement by 61.1%, demonstrating highly competitive energy efficiency for acid-catalyzed rich-MEA solution regeneration processes. The excellent efficiency of the [HOOCMIM][PF₆] catalyst may be explained by its high acidity and low viscosity. Stability tests over nine CO₂ absorption–desorption cycles indicated no significant deterioration, evidencing its robust stability. The CO₂ desorption mechanism of [HOOCMIM][PF₆] was explored using FT-IR and ¹³C NMR studies. Importantly, [HOOCMIM][PF₆] does not hinder CO₂ absorption in fresh amine solutions, eliminating the need for separating the IL from the amine system. Thus, the [HOOCMIM][PF₆]-amine system can be directly utilized as a new absorbent in existing CO₂ capture apparatus without the need for extra costs of device retrofitting, thereby facilitating broad application. This study presents a viable approach to reducing the energy demand and operational costs of CO₂ capture technology in practical applications.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123546"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146138481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resource utilization of sulfate-rich membrane concentrates via electrosynthesis of peroxydisulfate","authors":"Liangjie Wang ,&nbsp;Yi Zhou ,&nbsp;Fengtao Zhao ,&nbsp;Huanjing Zhang ,&nbsp;Jinrui Shi ,&nbsp;Lixuan Ma ,&nbsp;Huifang Sun ,&nbsp;Yi Xu ,&nbsp;Huazhang Zhao","doi":"10.1016/j.ces.2026.123586","DOIUrl":"10.1016/j.ces.2026.123586","url":null,"abstract":"<div><div>Developing an effective strategy for the high-value resource utilization of sulfate-rich membrane concentrates (SRMC) generated from wastewater reclamation remains a major challenge. This study demonstrates that the electrolysis of SRMC not only enables complete removal of organic pollutants but also permits the concurrent production of high-value peroxydisulfate (PDS). Using a fluorine-modified boron-doped diamond (BDD-F) electrode for PDS electrosynthesis, a 15 % higher Faraday efficiency was achieved compared to that of the pristine BDD electrode. The key intermediate for PDS formation was identified as HO•, and density functional theory calculations revealed that fluorine modification effectively suppresses the oxygen evolution reaction while promoting HO• generation. Approximately 230 mM of PDS was produced after 12 h of electrolysis, with the yield increasing linearly over time. When treating actual SRMC, complete organic mineralization was achieved within 5 h, accompanied by the production of ∼ 40 mM PDS. Notably, the PDS yield remained stable even after 15 cycles, indicating excellent electrode durability. The PDS derived from SRMC exhibited comparable performance in organic wastewater treatment to commercial one. These results confirm that electrolysis using a fluorine-modified BDD electrode represents a highly effective strategy for sulfate resource recovery from membrane concentrates.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"326 ","pages":"Article 123586"},"PeriodicalIF":4.3,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}