Desalination最新文献

{"title":"Galvanic cell-assisted uranium adsorption based on GP-CS@CF electrode","authors":"Changting Chen,&nbsp;Yu Liu,&nbsp;Jianguo Ma,&nbsp;Shujuan Liu,&nbsp;Jianqiang Luo,&nbsp;Xiaolan Tong,&nbsp;Xuejiao Peng","doi":"10.1016/j.desal.2025.119138","DOIUrl":"10.1016/j.desal.2025.119138","url":null,"abstract":"<div><div>The effective separation and recovery of uranium holds significant strategic importance for the sustainable management of radioactive wastewater. In view of the limitations of traditional adsorption techniques, a novel uranium extraction system was constructed in this study using a coupled electrochemical-adsorption approach. An innovative glyphosate-functionalized chitosan composite electrode (GP-CS@CF) was developed and integrated with a galvanic cell-assisted (GCA) electrochemical system to achieve high-efficiency uranium removal. Experimental results demonstrated that GP-CS@CF exhibited an excellent adsorption capacity, and the GCA method achieved a uranium extraction rate nearly seven times that of traditional physicochemical adsorption methods, with a maximum adsorption capacity of 4860 mg/g. Moreover, GP-CS@CF exhibited excellent anti-interference properties and regeneration ability. Mechanistic analysis suggested that the enhanced uranium removal was attributed to synergistic effects of three pathways: adsorption by GP-CS@CF, electrochemical reduction via the GCA, and O₂-mediated oxidation. This study offers a cost-effective and environmentally sustainable strategy for uranium extraction, which has significant potential for practical application.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119138"},"PeriodicalIF":8.3,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518135","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":"Turbulent fluxes, integral model coefficients, and desalination discharge predictions","authors":"Shuen Law ,&nbsp;Mark J. Davidson ,&nbsp;Craig McConnochie ,&nbsp;Pedro J. Lee","doi":"10.1016/j.desal.2025.119137","DOIUrl":"10.1016/j.desal.2025.119137","url":null,"abstract":"<div><div>Brine discharges from large-scale desalination plants are typically in the form of inclined negatively buoyant jets (INBJs). Existing simplified predictive (integral) models employed to predict the behavior of desalination discharges demonstrate significant errors when compared with physical measurements. The accuracy of these INBJ predictions is dependent on our knowledge of the mean and turbulent fluxes within the flow. In this study, the mean and turbulent fluxes of INBJs are extracted from a recently generated and validated Large Eddy Simulation (LES) dataset. The implications of this new information for development and implementation of integral models are then explored, with a particular focus on the ability of these models to predict characteristic parameters that are representative of physically measured flow profiles. Central to the development of integral models (as the name suggests) is the integration of mean and turbulent fluxes over cross-sections perpendicular to flow direction to determine model coefficients. These integral coefficients remain constant where the non-dimensional functional form of the perpendicular profiles remains unchanged, that is, independent of downstream distance (self-similarity). The assumption of self-similarity and associated constant integral coefficients has been shown to be valid for predicting jet and plume. Analysis of the new LES flux data enables the integral model coefficients to be determined directly from the mean and turbulent flux data at each cross-section for INBJs and to therefore determine the extent to which the assumption of self-similarity remains valid for these flows. Analysis of these fluxes also informs modifications to an existing INBJ integral model, which result in significantly improved model predictions. The latter confirms that a substantial source of previously noted discrepancies with measured data has been an oversimplified approach to determining integral model coefficients for INBJs. In addition, the new flux data provides a basis for cross-validating future experimental and simulation results, as well as informing further experimental studies of these flows.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119137"},"PeriodicalIF":8.3,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502283","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":"Progress in covalent organic framework membranes for water desalination: Mechanistic insights, synthesis strategies, applications, and future prospects","authors":"Huixia Lv ,&nbsp;Zhuozhi Lai ,&nbsp;Zhiwei Xing ,&nbsp;Sai Wang ,&nbsp;Qi Sun","doi":"10.1016/j.desal.2025.119146","DOIUrl":"10.1016/j.desal.2025.119146","url":null,"abstract":"<div><div>Membrane-based desalination has become a crucial technology, harnessing the efficiency and scalability of membrane systems to address global water scarcity. Covalent organic frameworks (COFs), with their precisely engineered nanopores and customizable chemical functionalities, show great potential for advancing next-generation desalination membranes. This review begins by exploring the fundamental separation mechanisms in COF-based desalination, including size exclusion, surface wettability modulation, and electrostatic interactions. It then highlights recent advances in the design and synthesis of COF membranes, with a focus on innovations in structural control and interfacial engineering. The application of COF membranes in desalination is categorized based on driving forces: pressure-driven desalination, thermally driven distillation, vapor pressure-driven processes, and electrically driven separation. Looking to the future, key research areas are identified, including machine learning-guided pore optimization, multifunctional COF hybrid architectures, and large-scale performance validation to move from laboratory breakthroughs to real-world implementation. By synthesizing these insights, this review aims to promote interdisciplinary collaboration that can unlock the full potential of COFs in creating energy-efficient, durable, and sustainable desalination technologies.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119146"},"PeriodicalIF":8.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502748","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 heat-activated peroxymonosulfate pretreatment for effective biofouling mitigation strategies in seawater membrane distillation","authors":"Jaewon Lee ,&nbsp;M. Obaid ,&nbsp;Najat A. Amin ,&nbsp;Weilong Yang ,&nbsp;Jieun Kim ,&nbsp;Taegeun Park ,&nbsp;Seonkyu Lee ,&nbsp;Seunghwan Woo ,&nbsp;Youngjin Kim ,&nbsp;Min Zhan ,&nbsp;Noreddine Ghaffour ,&nbsp;Seungkwan Hong","doi":"10.1016/j.desal.2025.119148","DOIUrl":"10.1016/j.desal.2025.119148","url":null,"abstract":"<div><div>This study introduces an innovative in-situ heat-activated peroxymonosulfate (PMS) system as an efficient pretreatment strategy for mitigating biofouling in membrane distillation (MD) for seawater desalination. The system demonstrated robust microorganism inactivation in Red Sea seawater at MD operating temperatures of 60, 70, and 80 °C. This was attributed to the thermally accelerated generation of reactive chlorine species, achieving a log removal exceeding 3.6. The heat-activated PMS system significantly reduced the normalized vapor flux decline, by approximately 3.2 times at 60 °C (54 % vs. 17 %), 3.8 times at 70 °C (42 % vs. 11 %), and 5.7 times at 80 °C (56 % vs. 9.9 %), at a volume concentration factor of 4, compared to untreated system. These improvements were validated by optical coherence tomography imaging, which confirmed suppressed biofilm formation on the MD membrane surface, and live cell analysis, confirming a substantial decrease in live bacterial cell deposition. These findings highlight the potential of the heat-activated PMS system as a sustainable and efficient in-situ pretreatment strategy capable of addressing biofouling challenges and enhancing MD performance, offering a practical and scalable solution for seawater desalination applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119148"},"PeriodicalIF":8.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536009","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":"Exploration of multifaceted domain of advanced membrane separation processes for wastewater treatment and desalination – A review","authors":"Purusottam Tripathy ,&nbsp;Harshad V. Kulkarni ,&nbsp;Sarita Kalla","doi":"10.1016/j.desal.2025.119133","DOIUrl":"10.1016/j.desal.2025.119133","url":null,"abstract":"<div><div>Wastewater treatment is a crucial component of water resource management, essential for ensuring water availability for reuse and protecting both environmental health and human well-being. The rise in the volume of modern-day wastewater, often containing critical pollutants, and lack of advancements in treatment processes leads to the discharge of untreated or poorly treated wastewater into freshwater sources. While conventional treatment methods offer some effectiveness, they fall short in producing high-quality treated water and addressing key challenges associated with it for domestic and industrial applications. This has intensified the demand for advanced separation techniques to handle current wastewater management issues. Among these, membrane technology has garnered significant attention for its ability to remove organic contaminants, toxic substances, and other low-concentration nutrients. So, this review aims to emphasize the importance of advanced wastewater separation techniques, particularly their role in enhancing treatment efficiency and resource recovery. It mainly evaluates the performance of integrated and hybrid separation technologies for wastewater treatment with respect to membrane technology. The idea of this paper is to summarize the evolution in conventional membrane technology by discussing the integration of different membrane techniques with one another or with various advanced oxidation processes (AOPs) for membrane performance enhancement, including their fouling and wetting mitigation strategies. Additionally, the review explores the application of novel nanocomposites in membrane technology, assessing their effectiveness and potential for addressing major drawbacks associated with membrane separation process during wastewater treatment. The paper concludes with a discussion on future research directions in this evolving field.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119133"},"PeriodicalIF":8.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523461","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":"Chemical free pH control for efficient lithium recovery via redox-couple mediated bipolar membrane electrodialysis","authors":"SeongBeom Jeon ,&nbsp;Taijin Min ,&nbsp;Minhui Kim ,&nbsp;Choonsoo Kim ,&nbsp;Sungil Lim ,&nbsp;Hongsik Yoon","doi":"10.1016/j.desal.2025.119145","DOIUrl":"10.1016/j.desal.2025.119145","url":null,"abstract":"<div><div>A novel redox couple mediated bipolar membrane electrodialysis (redox-BMED) system was developed and optimized to enable chemical free pH control for lithium precipitation. Unlike conventional methods that rely on alkaline reagents such as NaOH, this system utilizes in situ water dissociation through a bipolar membrane (BPM) and reversible redox mediation (Fe(CN)₆⁴⁻/Fe(CN)₆³⁻), thereby avoiding additional chemical inputs for pH control. The effects of operating conditions such as applied voltage (0.6–1.2 V), flow rates (2–10 mL/min) and electrodes stacking were investigated. Maximum performance was achieved with a lithium ion flux of 13.82 g-Li⁺/m²d and energy consumption of 1.33 Wh/g. A techno-economic analysis was conducted to evaluate the cost-effectiveness of the redox-BMED system compared to conventional BMED. The redox-BMED system demonstrated over 70 % reduction in total annual cost, primarily due to simplified stacking design and lower membrane usage. Overall, these findings indicate that redox-BMED offers a viable alternative for lithium recovery in CO₂ based precipitation processes. Its ability to combine chemical free pH control, high purity product formation, and competitive economic returns underscores its potential for large-scale lithium recycling and resource utilization.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119145"},"PeriodicalIF":8.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144510693","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":"Comparative assessment of conventional and emerging desalination technologies: a holistic review for sustainable water solutions","authors":"Jun-Ki Choi ,&nbsp;Anup Paudel ,&nbsp;Sobit Sapkota ,&nbsp;Mishal Alsehli ,&nbsp;Ali Alshamrani ,&nbsp;Jooyoung Park ,&nbsp;Yiseul Hong ,&nbsp;Xiaobo Romeiko","doi":"10.1016/j.desal.2025.119140","DOIUrl":"10.1016/j.desal.2025.119140","url":null,"abstract":"<div><div>Desalination is playing an increasingly vital role in addressing global water scarcity, yet current reviews often isolate established and emerging technologies, limiting cross-comparative insights. This study presents a unified, systematic assessment of both conventional and post-2000 emerging desalination methods, offering a holistic decision-support framework. Through heatmaps and multi-criteria benchmarking, we evaluate energy demand, cost, environmental impact, water quality, and technological maturity across a wide spectrum of technologies. By integrating mechanistic insights with side-by-side performance summaries, the review highlights trade-offs and synergies, revealing that no single solution outperforms in all contexts. We identify critical research frontiers, including graphene-based membranes, microbial desalination, and machine learning-driven optimization that hold transformative potential. Our framework empowers stakeholders to select, combine, and advance desalination technologies aligned with regional conditions and sustainability goals, while advancing the field beyond siloed evaluations toward integrated, future-ready strategies.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119140"},"PeriodicalIF":8.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144482454","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":"The reverse osmosis desalination system driven by the marine current turbine under dynamic conditions","authors":"Yajing Gu ,&nbsp;Tian Zou ,&nbsp;He Ren ,&nbsp;Hongwei Liu ,&nbsp;Yonggang Lin ,&nbsp;Zhiwei Song ,&nbsp;Kenan Ye","doi":"10.1016/j.desal.2025.119142","DOIUrl":"10.1016/j.desal.2025.119142","url":null,"abstract":"<div><div>Freshwater scarcity is a critical challenge in remote coastal and island regions, where access to traditional freshwater resources is limited. Reverse osmosis (RO) desalination has proven to be an effective solution; however, its high energy consumption and reliance on fossil fuels necessitate sustainable alternatives. This study develops a marine current turbine-driven desalination system designed to address the dynamic conditions of marine currents and enhance system efficiency. The proposed system adopts a direct-drive mechanism to minimize energy losses and features the design of a Clark pump, addressing the key issue of improving energy efficiency in desalination systems under fluctuating power input conditions. Additionally, a soft start process for the RO membranes has been developed, ensuring the long-term stable operation of the membranes and resolving the reliability issues of RO membranes under fluctuating power inputs. Based on operational parameters and water quality requirements, a safe operating window has been established, and a constant recovery rate and low specific energy consumption operation strategy have been developed to ensure the stable operation of the system under varying marine current velocities. Trial testing demonstrated that the system's specific energy consumption is 3.61 kWh/m³, with an energy recovery efficiency of 83.7 % for the energy recovery device. Furthermore, during the soft-start process of the RO membranes, both the feed flowrate and pressure stabilization time exceed 30 s, effectively reducing the risk of potential damage caused by hydraulic shock.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119142"},"PeriodicalIF":8.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144479941","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 CO2 capture using amine-based extractants in liquid-liquid hollow fiber membrane contactors for direct ocean capture","authors":"Seong-Jun Cho ,&nbsp;Ho Geun Jeong ,&nbsp;Tae Hoon Choi ,&nbsp;Soon Jin Kwon ,&nbsp;Seong Uk Hong ,&nbsp;Jong Hak Kim ,&nbsp;Jae-Deok Jeon","doi":"10.1016/j.desal.2025.119143","DOIUrl":"10.1016/j.desal.2025.119143","url":null,"abstract":"<div><div>One of the novel direct ocean capture (DOC) proposed to achieve negative carbon emissions is the liquid-liquid hollow fiber membrane contactor (LL-HFMC). The ocean, with a CO₂ concentration approximately 150 times higher than that of the atmosphere, provides a more energy-efficient and cost-effective alternative to direct air capture (DAC). Despite its advantages, there is a lack of research on the effects of membranes and extractants in the DOC process. This study aims to optimize extractants for LL-HFMC in the DOC process through a systematic evaluation of amine-based extractants. The performance of monoethanolamine (MEA), ethylenediamine (EDA), diethylenetriamine (DETA), and triethylenetetramine (TETA) were compared alongside sodium hydroxide (NaOH), a benchmark extractant in LL-HFMC processes. Polypropylene hollow fiber membranes were used as the contactor medium. Among the extractants, DETA exhibited the highest CO₂ capture efficiency. In addition, the effects of concentration and the flow rates (seawater and extractant) using DETA on system performance were investigated. These findings underscore the importance of material and process optimization, reaffirming that DOC – leveraging its inherently higher CO₂ concentration – offers a more economical and scalable carbon capture medium than DAC. This study provides valuable insights into enhancing DOC efficiency and advancing carbon capture methodologies.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119143"},"PeriodicalIF":8.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513508","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":"Sustainable and selective capture of Ca2+/Mg2+ from seawater desalination brines via hierarchical chitosan-based biochar aerogel adsorption","authors":"Wenjie Wang ,&nbsp;Xin Li ,&nbsp;Jiawang Qin ,&nbsp;Chunyan Yang ,&nbsp;Quanxun Liang ,&nbsp;Shun Tang ,&nbsp;Zhaoying Li ,&nbsp;Jiale Wang ,&nbsp;Shengchi Bai ,&nbsp;Xiaoqi Wang ,&nbsp;Wen Wen ,&nbsp;Baicang Liu","doi":"10.1016/j.desal.2025.119139","DOIUrl":"10.1016/j.desal.2025.119139","url":null,"abstract":"<div><div>To address the challenge of removing high-concentration calcium and magnesium ions (Ca²⁺/Mg²⁺) from seawater desalination brines (SDB), this study introduces a novel chitosan-based biochar aerogel (CBA) system specifically engineered for hypersaline water treatment. The innovative adsorbent material utilizes high-temperature pyrolysis chitosan (85 % and 95 % deacetylation degree (DD)) generate biochar and then crosslinked into three-dimensional porous aerogels (CBA85 and CBA95), which were compared with conventional activated carbon aerogel (ACA). Comprehensive characterization revealed that CBA95 exhibited a high density of free amino groups and a well-developed mesoporous structure, with a specific surface area of 107.04 m²/g, approximately 3.14 times that of ACA. The maximum adsorption capacities of CBA95 for Ca²⁺ and Mg²⁺ were 5.15 mg/g and 9.37 mg/g, respectively. Selectivity adsorption experiments demonstrated CBA95 exhibited high selectivity for Ca²⁺ and Mg²⁺, with distribution coefficient (<em>K</em>_<em>d</em>) of 164.25 mL/g and 42.73 mL/g, respectively. The equilibrium data were aligned with the Langmuir isotherm model, suggesting a monolayer chemical adsorption mechanism, and further the electrostatic and complexation adsorption mechanism was identified and proposed. Most notably, fixed-bed reactor of CBA95 maintains over 87 % of Ca²⁺ and 91 % of Mg²⁺ removal efficiency after 9 adsorption-desorption cycles. The pilot-scale experiment of CBA95 in Qingdao SDB achieved 72.3 % Ca²⁺ and 74.6 % Mg²⁺ removal, confirming high industrial potential. Thus, this research not only establishes a theoretical foundation for applying chitosan-based materials in SDB softening but also provides a solution for large-scale engineering-scale applications due to their environmental sustainability and potential.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119139"},"PeriodicalIF":8.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490437","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}