Desalination最新文献

{"title":"Magnetically driven engineering of magnetic hydroxyapatite/CA RO membranes: Enhancing surface physicochemical properties for high-performance water desalination","authors":"Fariba Oulad ,&nbsp;Ali Akbar Zinatizadeh ,&nbsp;Sirus Zinadini ,&nbsp;Amir Razmjou ,&nbsp;Sara Eavani","doi":"10.1016/j.desal.2025.119697","DOIUrl":"10.1016/j.desal.2025.119697","url":null,"abstract":"<div><div>This research focuses on the development of innovative hydrophilic reverse osmosis (RO) hydroxyapatite/cellulose acetate (HAP/CA) and magnetic-hydroxyapatite (M-HAP)/CA membranes, utilizing a phase-inversion technique with varying nanoparticles (NPs) concentration. The positioning of magneto-responsive M-HAP NPs within the advanced M-HAP/CA membranes was adeptly controlled using magnetic guidance during immersion- precipitation process in a coagulation bath. This precise control enabled a densely organized arrangement of M-HAP NPs, shifting from the membrane's core to its upper separation layer. Consequently, the barrier properties, mechanical integrity, and surface characteristics of the advanced M-HAP/CA membranes saw significant enhancement due to the uniform distribution of hydrophilic porous NPs on the surface. The synergistic effect of these key factors leads to enhanced membrane performances in terms of trade-off between salt flux and rejection, anti-fouling/anti-scaling behavior, and chlorine resistance capacity in the advanced M-HAP/CA magneto-responsive membranes. In all the tests conducted, the best membrane performance was observed for magneto- responsive membrane of M-MH₂. The optimal M-MH₂ exhibits a desirable flux of 79.5 L/m².h, a substantial increase from the 16.5 L/m².h observed in the bare membranes. Simultaneously, it achieves satisfactory rejection of 97.5 %, significantly surpassing the 67.2 % rejection efficiency of the bare membranes. This advancement effectively mitigates the prevalent trade-off issues typically encountered in desalination processes. The M-MH₂ membrane exhibits enhanced resilience against contamination by bovine serum albumin (BSA), achieving a flux recovery ratio (FRR) of 99.2 %. It also demonstrates robust resistance to silica fouling, with an FRR of 97.4 %. When subjected to a dual challenge of BSA and silica contaminants, the membrane sustains an FRR of 93.6 %. Furthermore, the M-MH₂ membrane displays nearly consistent separation efficacy in both flux and rejection before and after exposure to chlorine, underscoring its significant capacity to withstand chlorine-induced degradation. The innovative advanced RO M-HAP/CA membrane has the potential to serve as an effective separation tool, opening new avenues for large-scale desalination processes in industrial applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119697"},"PeriodicalIF":9.8,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145734784","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":"High-quality Carbons Mesostructured from Korea (CMK)-type carbons with adjustable mesostructure used as potential nanoadsorbent for enhanced tannic acid capture","authors":"Tzong-Horng Liou ,&nbsp;Bo-Chen Lai ,&nbsp;Xin-Yi Xu","doi":"10.1016/j.desal.2025.119725","DOIUrl":"10.1016/j.desal.2025.119725","url":null,"abstract":"<div><div>Ordered mesoporous carbon materials, CMK-1 and CMK-3, both are well-known members of the <em>CMK family</em>. However, few studies have made a comparison of the pore features of the two carbons for adsorption application. This study is the first to simultaneously synthesize CMK-1, CMK-3-S, and CMK-3-T by using MCM-48, SBA-15-S, and SBA-15-T as silica template sources. The effects of the silicon precursor and surfactant on the pore structure of mesoporous silicas as well as the adsorption property of CMK materials were investigated. TEM revealed that all CMK materials were highly ordered and comprised hexagonal mesoporous structures. The CMK-1 (1364 m²/g) had higher surface area than those of CMK-3-S (1084 m²/g) and CMK-3-T (1177 m²/g). The CMK-3-T (1.362 cm³/g) had larger pore volume than those of CMK-3-S (1.224 cm³/g) and CMK-1 (0.811 cm³/g). The three carbons had uniform pores of size 2.42–3.86 nm. The effects of adsorbent type, initial concentration, carbon dosage, agitation speed, and solution pH on the elimination of tannic acid (TA) were investigated in adsorption studies. The three materials exhibited considerably higher adsorption ability than commercial activated carbon did. CMK-3-T had higher adsorption capacity (507.66 mg/g) than CMK-3-S (457.94 mg/g) and CMK-1 (410.38 mg/g) did. The maximum TA removal efficiency of the three carbons exceeded 95 %. Adsorption isotherm and kinetics models were applied to determine the adsorption type and mechanism. Reutilization revealed that CMK carbons eliminated TA favorably even after five use cycles. CMK-3-S has a large pore size, low mass transfer resistance, high thermal stability, large particle size for easy recycling, and relatively low raw material price, making it suitable for producing industrial-grade nano‑carbon products. These carbons were not pretreated or modified, which were easy to synthesize and mass produce. The results thus indicate that CMK materials are promising adsorbents for removing organic pollutants from wastewater.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119725"},"PeriodicalIF":9.8,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683779","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":"Nutrient recovery from hydrolysed urine by high-rate electrodialysis: A proof-of-concept study","authors":"Yi Zhang,&nbsp;Veera Koskue,&nbsp;George Q. Chen,&nbsp;Sandra E. Kentish,&nbsp;Stefano Freguia","doi":"10.1016/j.desal.2025.119733","DOIUrl":"10.1016/j.desal.2025.119733","url":null,"abstract":"<div><div>Human urine represents a valuable resource for sustainably meeting the growing demand for nitrogen (N), phosphorus (P) and potassium (K) fertilisers as it is rich in these NPK nutrients. This study demonstrates the suitability of electrodialysis (ED) for simultaneous N, P and K recovery from hydrolysed urine at a high current density of 30 mA/cm², facilitating rapid ion transport. The concentrate product obtained from a synthetic urine at 30 mA/cm² contained 20.0 ± 0.3 g NH₄⁺-N/L, 9.9 ± 0.2 g K⁺/L, and 1.6 g PO₄-P/L. The corresponding concentration factors of N, P, and K were 3.5, 4.1 and 3.4, respectively. At 30 mA/cm², the process approached the limiting current density (LCD) of the system when the total ammonia nitrogen (TAN) concentration in the diluate decreased to around 2 g/L. At this point, the TAN removal efficiency remained high at ~64 % with a stable specific energy consumption of 9.0 ± 0.2 kWh/kgN and an average nitrogen migration rate of 104 gN/m²/h. Experiments with real hydrolysed urine confirmed stable operation in high-rate ED, achieving NH₄⁺-N concentrations of up to 30 gN/L, among the highest reported for ED-based nutrient recovery from urine. These findings validate the feasibility and efficiency of high-rate ED for nutrient recovery from source-separated urine. The study provides a practical reference for designing continuous ED systems, where membrane area and diluate/concentrate concentrations can be adjusted to maintain efficient nutrient recovery while operating below the LCD to minimise energy loss and reduce capital costs.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119733"},"PeriodicalIF":9.8,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683875","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":"Tweaking the electrodes of LiFePO4/FePO4-based electrochemical lithium-ion pumping system for lithium extraction","authors":"Vivekananda Mahanta,&nbsp;Wing Ching Kwok,&nbsp;Deepika Lakshmi Ramasamy,&nbsp;Prakash Venkatesan","doi":"10.1016/j.desal.2025.119721","DOIUrl":"10.1016/j.desal.2025.119721","url":null,"abstract":"<div><div>Electrochemical lithium-ion pumping (ELIP) systems have emerged as a promising alternative for selective lithium extraction, offering advantages such as high purity, low energy consumption, and minimal environmental impact. In this study, we optimized the LiFePO₄/FePO₄ (LFP/FP)-based symmetrical ELIP system to enhance lithium extraction performance from aqueous solutions. A major limitation in traditional LFP/FP electrodes is their hydrophobic nature, which leads to poor electrolyte-electrode interaction, prone to oxygen reduction reaction and chemical oxidation, resulting rapid capacity degradation. To address these issues, we developed hydrophilic LFP/FP electrodes using a chitosan binder, which significantly improved wettability and interfacial stability, supressing the parasitic reactions. With the hydrophilic LFP/FP electrodes, excellent cycling stability (∼100 % capacity retention after 50 cycles) was achieved. Further, with 30 % conductive carbon content, the system achieved nearly a high capacity-utilization of ∼108 mAh g⁻¹ (∼28 mg of Li⁺ g⁻¹ of LFP) at a high current density of 10 mA g⁻¹. The optimized ELIP system demonstrated an energy consumption of ∼4.14 Wh mol⁻¹, the lowest reported among symmetric lithium extraction cells. These findings underscore the potential of hydrophilic electrode design and operating parameter optimization in advancing electrochemical lithium extraction technologies.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119721"},"PeriodicalIF":9.8,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683849","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":"Interfacial solar-driven seawater desalination: From material innovations to system integration and future perspectives","authors":"Nana Wang ,&nbsp;Yanfeng Yang ,&nbsp;Lining Zhang ,&nbsp;Pinqi Feng ,&nbsp;Xiangshan Bi ,&nbsp;Cun Zhou","doi":"10.1016/j.desal.2025.119720","DOIUrl":"10.1016/j.desal.2025.119720","url":null,"abstract":"<div><div>The escalating conflict between global water scarcity and the high energy consumption of traditional desalination technologies is a pressing global challenge. Solar-driven interfacial evaporation (SDIE), recognized for its high energy efficiency, low cost, and environmental friendliness, has emerged as a promising solution. This review systematically summarizes recent research progress in SDIE, covering advancements from material innovations to system integration. The review provides an in-depth analysis of the design principles for photothermal materials, optimization strategies for thermal management structures, and the fundamental mechanisms governing water and salt transport. Particular emphasis is placed on the innovative insights offered by bio-inspired approaches. Furthermore, the review prospectively identifies key challenges hindering practical application, including issues related to material limitations, long-term durability, and systemic energy management. Finally, the review outlines future development directions, such as intelligent responsive materials, integrated energy-water cogeneration systems, and sustainable development pathways, with the aim of charting a clear course for advancing SDIE technology from laboratory research toward real-world implementation.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119720"},"PeriodicalIF":9.8,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683851","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":"Recovery of ammonia from scrubber effluents using bipolar membrane electrodialysis: Assessing the effects of ammonium citrate - sulfate mixtures","authors":"Dhavissen Narayen ,&nbsp;Elif Başli ,&nbsp;Jules B.van Lier ,&nbsp;Henri Spanjers","doi":"10.1016/j.desal.2025.119723","DOIUrl":"10.1016/j.desal.2025.119723","url":null,"abstract":"<div><div>Recent research showed that the recovery of ammonia from simulated ammonium citrate scrubber effluent via bipolar membrane electrodialysis (BPMED) is less energy-intensive than from ammonium sulfate solutions. Nonetheless, the application of citric acid as scrubbing agent is limited by its high costs. This study aimed to improve BPMED performance for ammonium recovery using ammonium salts mixtures (ammonium sulfate and ammonium citrate) as feed solutions. Unlike previous studies that focused mainly on single-salt systems, it investigated how this combination affects ammonium recovery efficiency, current efficiency, energy consumption, ammonia diffusion, H⁺ and OH⁻ leakage to the diluate compartment, and anions transport across anion exchange membranes (AEMs) during BPMED. The ammonium recovery efficiency was higher for pure ammonium citrate (45.2 %) and mixture solutions (32.0–45.9 %) than for pure ammonium sulfate (26.8 %). Higher efficiency resulted from reduced competition between protons and ammonium across the cation exchange membrane (CEM). Feed with a higher ammonium citrate proportion increased buffer capacity, preventing protons leakage from the acid to the diluate compartment. This resulted in higher ammonium current efficiency for pure ammonium citrate (34.8 %) and mixture solutions (24.9–35.7 %) than for pure ammonium sulfate (20.4 %). The energy consumption was lower for pure ammonium citrate (14.1 kWh/kg-N recovered) and mixture solutions (13.0–17.4 kWh/kg-N recovered), than for pure ammonium sulfate (22.3 kWh/kg-N recovered). Ammonia diffusion from the base to the acid compartment reduced current efficiency by 19–23 % and accounted for 30–40 % of the total ammonium transported from the feed. This study demonstrated the effective use of ammonium citrate as one of the salts in the mixture to achieve high ammonium recovery efficiency with reduced energy consumption.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119723"},"PeriodicalIF":9.8,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683878","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":"Hyperbranched polyamide encapsulated ZIF-8 interlayer enabling precise regulation of polyamide nanofiltration membranes toward Li+/Mg2+ separation","authors":"Bingbing Yuan ,&nbsp;Shengsheng Lu ,&nbsp;Yuhang Zhang ,&nbsp;Yuxin Ding ,&nbsp;Xiao Chen ,&nbsp;Lei Zhang ,&nbsp;Jinmiao Cui ,&nbsp;Lihong Liu ,&nbsp;Ping Hu ,&nbsp;Siheng Zhao ,&nbsp;Shengchao Zhao ,&nbsp;Kuo Chen ,&nbsp;Juhui Jiang ,&nbsp;Dongxiao Yang ,&nbsp;Q. Jason Niu","doi":"10.1016/j.desal.2025.119724","DOIUrl":"10.1016/j.desal.2025.119724","url":null,"abstract":"<div><div>ZIF-8 is a promising interlayer material for high-permeance nanofiltration (NF) and reverse osmosis (RO) membranes, yet forming a defect-free polyamide (PA) layer remains challenging due to poor compatibility between ZIF-8 and polysulfone (PSF) support. Herein, a PA–ZIF-8 interlayer was fabricated on PSF substrates via a diazotization–coupling reaction using hyperbranched polyamide in-situ encapsulated ZIF-8 nanoparticles, followed by interfacial polymerization (IP) to form the PA selective layer. The resulting interlayer enhanced substrate hydrophilicity and promoted uniform piperazine diffusion, enabling the formation of a defect-free PA nanofilm. The formed polyamide nanofilms achieved precise regulation, revealing a homogeneous nanostrip-like morphology with reduced thickness, narrow average effective pore size, decreased surface negative charge and enhanced hydrophily, which is helpful to improve size exclusion and alleviate the electrostatic attraction on divalent cations. Consequently, the optimized PA/m-PSF-1 membrane achieved a high MgCl₂ rejection of 98.3 % and a water flux of 245.4 L m⁻² h⁻¹ for Na₂SO₄, 1.3–1.93 times higher than that of conventional PA membranes. Moreover, the Li⁺/Mg²⁺ separation factor reached 131.5, over 21 times greater than the PA/PSF. This interlayer-engineering strategy effectively tailors PA structure offering a viable route to advanced NF membranes with both high flux and Li⁺/Mg²⁺ selectivity for lithium extraction from Mg²⁺-rich brines.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119724"},"PeriodicalIF":9.8,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683876","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":"3D electrospray printing TFC nanofiltration membrane with narrow distributed pore size for the precise separation of mono−/divalent ions","authors":"Zhiguo Li ,&nbsp;Jason W. Liu ,&nbsp;Enshuang Li ,&nbsp;Fangbo Zhao ,&nbsp;Hongxu Chen ,&nbsp;Liu Yang ,&nbsp;Wennan Liu ,&nbsp;Hee-Deung Park","doi":"10.1016/j.desal.2025.119704","DOIUrl":"10.1016/j.desal.2025.119704","url":null,"abstract":"<div><div>Nanofiltration membranes inherently possess the ability to selectively separate ions due to their differing rejection characteristics for mono−/divalent ions. However, in the applications of complex ionic systems such as brine and wastewater reuse, nanofiltration membranes fabricated by conventional interfacial polymerization (IP) often face challenges to achieve precise separation of mono−/divalent cations, as well as anions, due to non-uniform pore structure (ultrafast reaction kinetics) and strong electronegativity (hydrolysis of acyl chloride groups). In this study, we fabricated a dense thin-film composite (TFC) nanofiltration membrane through multiple scans of three-dimensional (3D) electrospray printing, using piperazine (PIP) and trimesoyl chloride (TMC) as monomers and (±)-camphor-10-sulfonic acid-triethylamine (CSA-TEA) as the aqueous phase additive. The results show that the nanofiltration membrane prepared by 25 scans of 3D electrospray printing exhibited a dense pore structure of 2.91 Å with a narrow distribution. Meanwhile, the surface of the nanofiltration membrane demonstrated weak electronegativity of −13.24 mV at pH 7. The prepared membrane achieved precise selective separation of mono−/divalent anions and cations, based on the difference in hydration energy. The membrane demonstrated a separation factor of 120.52 for Cl⁻/SO₄²⁻ and 22.47 for Li⁺/Mg²⁺, along with a high pure water permeability. This work provides a novel paradigm for expanding the application of 3D electrospray printing in the preparation of TFC nanofiltration membranes.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119704"},"PeriodicalIF":9.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683850","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":"Desalination and cryogenic air separation by a zero-direct-emission multigeneration plant integrating LNG-fueled Allam–SCO2 cycles; ant lion optimization and CatBoost-based prediction with techno-enviro-economic assessment","authors":"Cheng Peng ,&nbsp;Jianjun Xu ,&nbsp;Fanxu Meng ,&nbsp;Limei Yan ,&nbsp;Shuqi Zhao","doi":"10.1016/j.desal.2025.119699","DOIUrl":"10.1016/j.desal.2025.119699","url":null,"abstract":"<div><div>The creation of integrated, sustainable energy systems is essential in light of the growing concerns about freshwater scarcity and greenhouse gas emissions. A novel zero-direct-emission combined cooling and power (ZDECCP) plant that combines a cryogenic air separation unit (ASU), a liquid natural gas LNG-fueled Allam cycle, a supercritical CO₂ cycle (SCO₂), and a seawater desalination unit (SDU) in a synergistic manner is proposed in this study to address the challenge. With this thermodynamically sophisticated setup, production of power, freshwater, cooling, and carbon capture can all be done simultaneously with low emissions. With the aid of Ant Lion Optimization (ALO)-driven multi-objective optimization and CatBoost-based predictions, thorough thermodynamic, economic, and environmental analyses were carried out. The findings show a 1408 kW net power output, 2438 kg/h of freshwater, 107.3 kW of cooling, and 625.7 kg/h of liquid CO₂ captured. The system attains a high LCOE of 0.274 $/kWh, an exergy efficiency of 41.09 %, and a thermal efficiency of 88.54 %. With an NPV of 3.16 M$, an IRR of 12.76 %, and a payback period of 4.3 years, economic indicators support viability. Zero-direct emission is also confirmed by life cycle analysis. This ZDECCP plant offers a practical route to clean, integrated energy-water-carbon solutions with machine learning R² values above 0.96 and optimal efficiency-NPV-LCOE trade-offs.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119699"},"PeriodicalIF":9.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683874","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":"In-situ ferrous oxalate coating strategy activates nano zero-valent iron for enhanced U(VI) Removal: Efficacy and reaction mechanism","authors":"Yanan Xiao ,&nbsp;Xiaowen Zhang ,&nbsp;Huiran Tang ,&nbsp;Siyu Zhang ,&nbsp;Xiaoyan Wu ,&nbsp;Yilong Hua ,&nbsp;Zhaowen Cheng ,&nbsp;Mi Li ,&nbsp;Ying Peng","doi":"10.1016/j.desal.2025.119703","DOIUrl":"10.1016/j.desal.2025.119703","url":null,"abstract":"<div><div>It is essential to enhance the pH adaptability of commercial nanoscale zero-valent iron (nZVI) and improve the efficiency of removing uranium from wastewater. In this study, three types of modified nZVI were synthesized and subsequently applied for uranium removal. Among these, oxalic acid-modified nZVI exhibited a 20 % higher uranium removal efficiency than pristine nZVI, with the removal efficiency exceeding 90 % over a wide pH range. It was observed that oxalic acid treatment led to the formation of a uniform FeC₂O₄·2H₂O shell coating on the nZVI surface, which preserved the reductive activity of Fe⁰ core, suppressed progressive oxidation and provided a dual-function interface that simultaneously facilitated uranium adsorption and reduction processes. Consequently, OA-nZVI significantly enhanced uranium removal, providing a promising iron-based nanomaterial with surface modification strategy for effective and long-term treatment of U(VI) from aqueous environment.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"621 ","pages":"Article 119703"},"PeriodicalIF":9.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683877","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}