Desalination最新文献

Sonochemical synthesis of YSZ nano-sol and ultrathin nanofiltration membranes YSZ纳米溶胶及超薄纳滤膜的声化学合成

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-12 DOI: 10.1016/j.desal.2025.118998

Xiaolian Jiang , Huanyu Zhou , Yuehua Zhang , Xiaowei Da , Xianfu Chen , Minghui Qiu , Yiqun Fan

{"title":"Sonochemical synthesis of YSZ nano-sol and ultrathin nanofiltration membranes","authors":"Xiaolian Jiang , Huanyu Zhou , Yuehua Zhang , Xiaowei Da , Xianfu Chen , Minghui Qiu , Yiqun Fan","doi":"10.1016/j.desal.2025.118998","DOIUrl":"10.1016/j.desal.2025.118998","url":null,"abstract":"<div><div>The ceramic nanofiltration membranes are widely used in antibiotic desalination due to their high selectivity in separating antibiotics and salts. In this research, a high-flux, highly selective YSZ (yttria-stabilized zirconia) composite nanofiltration membrane was prepared using the sonochemical method. A well-stabilized sol with an average particle size ranging from 1 to 2 nm was obtained through controlled aging and dialysis processes. The doping of yttria effectively inhibited zirconia phase transformation during heat treatment, thereby enhancing membrane integrity and ensuring accurate separation performance. Simultaneously, a 50 nm thick nanofiltration membrane was fabricated on the optimized transition layer, improving its efficient selectivity for antibiotics and salts. At the calcine temperature from 360 to 500 °C, the membrane pore size was precisely tuned to three different MWCOs of 460, 1000, and 2300 Da, with corresponding pure water permeance of 30, 65, and 90 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>, respectively. The nanofiltration membrane with a MWCO of 460 Da has retention rates for tetracycline, oxytetracycline, and doxycycline hydrochloride of 96.7 %, 97.6 %, and 99.6 %, respectively, with fluxes of 83.5, 83, and 81 L·m<sup>−2</sup>·h<sup>−1</sup>. This study shows a highly efficient ceramic nanofiltration membrane with great potential for separating antibiotics and salts.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 118998"},"PeriodicalIF":8.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946839","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

Engineering cyclodextrin-embedded polyester networks into interlayers of Ti3C2Tx MXene membranes for efficient desalination 工程环糊精嵌入聚酯网络的Ti3C2Tx MXene膜的中间层高效脱盐

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-12 DOI: 10.1016/j.desal.2025.118979

Junzhi Li, Yanan Li, Haiyu Luo, Lili Tang, Nan Xu, Wenlan Ji, Shihao Zhang, Pei Nian, Yibin Wei

{"title":"Engineering cyclodextrin-embedded polyester networks into interlayers of Ti3C2Tx MXene membranes for efficient desalination","authors":"Junzhi Li, Yanan Li, Haiyu Luo, Lili Tang, Nan Xu, Wenlan Ji, Shihao Zhang, Pei Nian, Yibin Wei","doi":"10.1016/j.desal.2025.118979","DOIUrl":"10.1016/j.desal.2025.118979","url":null,"abstract":"<div><div>MXene-based membranes have emerged as promising candidates for seawater desalination due to their unique two-dimensional (2D) lamellar structures, excellent hydrophilicity, and tunable interlayer spacing. However, challenges such as poor salt rejection, and structural instability hinder their broader application. Herein, we present novel Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene membranes owing cyclodextrin (CD)-embedded polyester network between their interlayers through trimesoyl chloride (TMC)-induced interfacial crosslinking, which not only promotes the formation of stable cross-links between the layers of the MXene nanosheets but also enhances their desalination performance. Various characterization methods were used to demonstrate the successful preparation of the Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene-based membranes cross-linked with the specific polyester networks. Using the same dosage of CDs, the membranes modified with α-CD, β-CD and γ-CD were comparatively investigated. The membrane embedded with 5 mg of α-CD exhibited the optimal desalination performance with rejection of 93.96 %, 93.00 %, 85.88 % and 76.25 % for MgSO<sub>4</sub>, Na<sub>2</sub>SO<sub>4</sub>, MgCl<sub>2</sub>, and NaCl, respectively, and water permeabilities ranging from 93.00 to 149.06 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>. Moreover, the Na<sup>+</sup> and Mg<sup>2+</sup> transport mechanisms within the prepared membrane nano-channels were further investigated by molecular dynamics (MD) simulations. This work offers an innovative approach by introducing CD/TMC interfacial crosslinking to 2D lamellar-structured membranes, providing a high-performance solution for desalination.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 118979"},"PeriodicalIF":8.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946840","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

Current status and research trends of electroplating wastewater treatment: Systematic review and bibliometric analysis 电镀废水处理的现状与研究趋势：系统综述与文献计量分析

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-12 DOI: 10.1016/j.desal.2025.119004

Zhonghong Li , Caili Du

{"title":"Current status and research trends of electroplating wastewater treatment: Systematic review and bibliometric analysis","authors":"Zhonghong Li , Caili Du","doi":"10.1016/j.desal.2025.119004","DOIUrl":"10.1016/j.desal.2025.119004","url":null,"abstract":"<div><div>The electroplating industry integral to manufacturing generates wastewater containing toxic substances that threaten environmental and public health, necessitating the development of effective treatment technologies to ensure the industry's sustainable advancement and environmental protection. To understand the current research and identify emerging trends in the field of electroplating wastewater (EPW) treatment, a comprehensive review of the literature from 1990 to 2024 was conducted. This review utilized the Web of Science Core Collection (WOSCC) database to ensure a broad and representative sample of relevant studies. The advanced bibliometric tools, including the “bibliometrix” package, VOSviewer, and CiteSpace were employed to conduct a detailed visual analysis including annual publication outputs, major contributing groups (countries/regions, institutions, and authors), influential journals, and keyword dynamics. The findings revealed a global increase in scholarly publications in the field of EPW treatment, with notable contributions emerging from research institutions and authors from China. The most influential journals were the <em>Journal of Hazardous Materials</em>, <em>Separation and Purification Technology</em>, and <em>Chemical Engineering Journal</em>. Co-occurrence and burst analysis of keywords indicated that current research in EPW treatment predominantly focuses on different treatment techniques including chemical precipitation, ion exchange, electrochemical, membrane separation, and adsorption, with the adsorption method receiving pervasive attention. Additionally, the development and application of functional materials have emerged as significant research hotspots, demonstrating considerable potential to enhance the efficiency and sustainability of EPW treatment processes. This trend underscores the evolving landscape of EPW treatment methodologies emphasizing the need for innovative and effective solutions to tackle environmental challenges.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 119004"},"PeriodicalIF":8.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941689","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

Efficient recovery of lithium from the reverse osmosis concentrate of shale gas wastewater treatment: Adsorption performance and mechanism of Al-doped manganese-based adsorbent particles prepared via hydrophilic modification 页岩气废水反渗透浓缩液中锂的高效回收：亲水改性制备的掺铝锰基吸附剂颗粒的吸附性能及机理

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-11 DOI: 10.1016/j.desal.2025.118997

Xin Li , Xifan Li , Quanxun Liang , Guijing Chen , Wenjie Wang , Jin Bao , Jiawang Qin , Shun Tang , Xiao Lin , Alberto Tiraferri , Baicang Liu

{"title":"Efficient recovery of lithium from the reverse osmosis concentrate of shale gas wastewater treatment: Adsorption performance and mechanism of Al-doped manganese-based adsorbent particles prepared via hydrophilic modification","authors":"Xin Li , Xifan Li , Quanxun Liang , Guijing Chen , Wenjie Wang , Jin Bao , Jiawang Qin , Shun Tang , Xiao Lin , Alberto Tiraferri , Baicang Liu","doi":"10.1016/j.desal.2025.118997","DOIUrl":"10.1016/j.desal.2025.118997","url":null,"abstract":"<div><div>The growing demand for lithium in energy storage batteries has driven interest in extracting lithium from shale gas wastewater as a sustainable alternative to traditional mining. To address challenges such as high cycling loss of adsorbent powder and complex operational procedures, this study developed adsorbent spheres by pelletizing Al-modified H<sub>1.33</sub>Mn<sub>1.67</sub>O<sub>4</sub> powder with polyvinyl chloride (PVC) as the skeleton material, and introducing cellulose acetate (CA) or Pluronic F127 as hydrophilic modifiers. CA-modified powder exhibited superior mechanical stability, internal porosity, and hydrophilicity. These properties reduced interference from organic matter and allowed a lithium adsorption capacity of 20.2 mg/g, surpassing the 18.8 mg/g capacity of unmodified PVC particles. Adsorption behavior followed the Freundlich isotherm model, while pseudo-second-order kinetics indicated that multi-step and multi-layer chemisorption governed lithium uptake. In fixed-bed filtration experiments, the optimal empty bed contact time (EBCT) was determined to be 40 min, leading to an adsorption saturation bed volume more than 40 times the empty bed volume. Desorption enrichment provided lithium concentrations of approximately 200 mg/L. The adsorbent maintained its adsorption capacity over 10 adsorption-desorption cycles, with manganese dissolution losses below 0.3 % and in some cases as low as 0.2 %. These findings confirm the durability and efficacy of the novel composite adsorbent in lithium recovery, offering a significant step toward more efficient and sustainable lithium extraction from treated shale gas wastewater.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 118997"},"PeriodicalIF":8.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935185","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

In-situ crystallization of rigid porous nanoparticles in the GO membrane for stable dye desalination 氧化石墨烯膜中刚性多孔纳米颗粒的原位结晶用于染料稳定脱盐

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-11 DOI: 10.1016/j.desal.2025.119001

Yun-Han Ren , Wen-Hai Zhang , Ming-Jie Yin , Zhi-Jie Liu , Quan-Fu An

{"title":"In-situ crystallization of rigid porous nanoparticles in the GO membrane for stable dye desalination","authors":"Yun-Han Ren , Wen-Hai Zhang , Ming-Jie Yin , Zhi-Jie Liu , Quan-Fu An","doi":"10.1016/j.desal.2025.119001","DOIUrl":"10.1016/j.desal.2025.119001","url":null,"abstract":"<div><div>Graphene oxide (GO) membranes offer substantial promise in the field of dye desalination. However, the low water permeance and structural instability limit their practical application. To address these challenges, a nanoparticle intercalation coupled with in-situ crystallization strategy was developed to tailor the microstructure of GO membranes. This approach enhances the interlayer spacing and strengthens the mechanical properties of the membrane. Rigid, porous MIL-100(Fe) nanoparticles are formed at the defective regions and interlayer spaces of the GO membrane through the in-situ conversion of pre-intercalated iron hydroxide nanoparticles. The MIL-100(Fe)@GO (MGO) membrane features an enlarged interlayer spacing and porous architecture, enabling it to attain a water permeance of 89.4 LMH/bar—a 22-fold improvement compared to the GO membrane. Additionally, the porous structure and negatively charged membrane surface improve dye rejection efficiency (e.g., 98.8 % for Methyl Blue (MB)) while maintaining low rejection of inorganic salts (e.g., <5 % for NaCl). More importantly, the insertion of rigid MIL-100(Fe) nanoparticles imparts exceptional stability to the membrane under cross-flow operation, including no decline in water permeance under high pressure, chemical stability across various pH conditions, and long-term operational stability. These characteristics make the MGO membrane a highly promising option for dye desalination applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 119001"},"PeriodicalIF":8.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935119","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

Comparative study of fouling in hollow fiber and flat sheet nanofiltration membranes by three organic foulants: Insights into configuration impact on fouling 三种有机污染物对中空纤维和平板纳滤膜污染的比较研究：构型对污染的影响

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-11 DOI: 10.1016/j.desal.2025.118996

Lianshuai Tan , Leonardo Gutierrez , Mei An , Arnout D'Haese , Emile Cornelissen

{"title":"Comparative study of fouling in hollow fiber and flat sheet nanofiltration membranes by three organic foulants: Insights into configuration impact on fouling","authors":"Lianshuai Tan , Leonardo Gutierrez , Mei An , Arnout D'Haese , Emile Cornelissen","doi":"10.1016/j.desal.2025.118996","DOIUrl":"10.1016/j.desal.2025.118996","url":null,"abstract":"<div><div>Hollow fiber (HF) membrane modules offer potential advantages over spiral-wound membrane modules in terms of fouling control due to the absence of spacers. This study investigated the fouling behavior of sodium alginate (SA), bovine serum albumin (BSA), and humic acid (HA) on NF90 flat sheet membranes and HF nanofiltration (NF) membranes through three cycles of fouling-cleaning experiments. Results showed that HF NF membranes exhibited lower total fouling and higher flux recovery ratio at the beginning in the HA and BSA fouling, but fouling rates were similar to those of NF90 flat sheet membranes. HF NF membranes showed higher fouling resistance for SA fouling, specifically in their lower decline of water permeability in three cycles, lower total fouling, and reduced fouling rate. Both membrane types maintained consistently high and stable rejection rates for all three foulants across all cycles. Complete blocking and cake layer formation played an important role in the fouling process. The observed difference in the fouling mechanism for the same foulant between the two membrane configurations confirmed the influence of membrane geometry on fouling dynamics. This research provides a further understanding of the advantages of HF NF membranes in mitigating membrane fouling, offering valuable information for membrane product selection in various applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 118996"},"PeriodicalIF":8.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935184","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

Asymmetric oxygen vacancies in Cu - Ov - Mn units boost charge transfer in MnO2 for enhanced hybrid capacitive deionization efficiency Cu - Ov - Mn单元中的不对称氧空位促进了MnO2中的电荷转移，从而提高了杂化电容去离子效率

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-11 DOI: 10.1016/j.desal.2025.119000

Weijie Fu , Jingxian Li , Yuanming Liu , Shuyun Yao , Shiyu Wang , kang Ji , Xiaojun Wang , Lanlan Shi , Xiaoke Li , Feike Zhang , Jiangzhou Xie , Zhiyu Yang , Yi-Ming Yan

{"title":"Asymmetric oxygen vacancies in Cu - Ov - Mn units boost charge transfer in MnO2 for enhanced hybrid capacitive deionization efficiency","authors":"Weijie Fu , Jingxian Li , Yuanming Liu , Shuyun Yao , Shiyu Wang , kang Ji , Xiaojun Wang , Lanlan Shi , Xiaoke Li , Feike Zhang , Jiangzhou Xie , Zhiyu Yang , Yi-Ming Yan","doi":"10.1016/j.desal.2025.119000","DOIUrl":"10.1016/j.desal.2025.119000","url":null,"abstract":"<div><div>Manganese dioxide (MnO<sub>2</sub>), despite its high theoretical capacitance, has been limited in hybrid capacitive deionization (HCDI) applications due to its inherently low conductivity, which impairs salt removal efficiency. Here, we introduce a strategy involving the integration of an asymmetric oxygen vacancy structure, specifically a Cu-O<sub>v</sub>-Mn unit into MnO<sub>2</sub>, significantly enhancing their electronic structure and HCDI performance. This structural innovation promotes a redistribution of electrons at the oxygen vacancy, facilitating enhanced electron flow towards Mn atoms and altering their electronic states. Density functional theory (DFT) calculations reveal that Cu doping reduces the band gap of MnO<sub>2</sub>, situating more electrons near the Fermi level and thereby improving electron transfer dynamics. These calculations also show an increase in the electron occupancy of lower energy t<sub>2g</sub> orbitals in Cu-MnO<sub>2</sub>/O<sub>v</sub>, accompanied by a notable elevation in their energy levels. This adjustment not only enhances the probability of electron transitions but also significantly lowers the migration barrier for Na<sup>+</sup> ions, thus improving ion mobility. In a 500 mg L<sup>−1</sup> NaCl solution, the Cu-MnO<sub>2</sub>/O<sub>v</sub> electrodes demonstrated a superior salt adsorption capacity (SAC) of 75.5 mg g<sup>−1</sup> and a salt adsorption rate (SAR) of 3.33 mg g<sup>−1</sup> min<sup>−1</sup> at 1.2 V. These findings underscore the potential of asymmetric oxygen vacancies to modulate the properties of transition metal oxides, providing a pathway to both improved HCDI performance and a broader application spectrum for MnO<sub>2</sub>-based materials.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 119000"},"PeriodicalIF":8.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941748","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

Tailoring the surface charge density of polyamide nanofiltration membrane for efficient emerging micropollutant separation 调整聚酰胺纳滤膜的表面电荷密度，有效分离新兴微污染物

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-10 DOI: 10.1016/j.desal.2025.118994

Xu Wu, Hao Xie, Kaiting Zhang, Ruiqi Zheng, Xin Yu, Ranwen Ou

{"title":"Tailoring the surface charge density of polyamide nanofiltration membrane for efficient emerging micropollutant separation","authors":"Xu Wu, Hao Xie, Kaiting Zhang, Ruiqi Zheng, Xin Yu, Ranwen Ou","doi":"10.1016/j.desal.2025.118994","DOIUrl":"10.1016/j.desal.2025.118994","url":null,"abstract":"<div><div>Active layered modification of thin-film composite (TFC) nanofiltration·(NF) membranes has enhanced the rejection performance of emerging micropollutants (EMPs) in water treatment applications. However, the influence of surface charge density on the NF membrane has been overlooked when evaluating the efficacy of tailoring membrane performance. In this study, five distinct membranes of NF-PEI<sub>1</sub>, NF-PEI<sub>2</sub>, pristine NF, NF-SA, and NF-PSS with continuously tuned charge intensity from positive, neutral to negative were fabricated by introducing polyelectrolytes into the active layer. The addition of polyelectrolytes slightly decreased the pore size of membranes while increasing the water flux. In general, the modified membranes with positive and negative charges exhibited an increase of rejection from 66–85 % to 75–97 % for a variety of EMPs and 5–17 % to 7–44 % for salts, with the rejection improving as the surface charge intensity of NF-X membranes increased. Notably, the selectivity of charged EMPs and salts improved significantly from 5 to 11 of NF membrane to 12–32 of NF-PEI<sub>1</sub> and NF-PSS membranes, while the selectivity of neutral EMP and salts remained unchanged. That demonstrated the significant role of Donnan interaction in enhancing the rejection of EMPs and the selectivity of EMPs/salts. The NF-X membranes were promising for separating EMPs and salts in applications such as textile wastewater treatment, antibiotic purification, and aquiculture seawater treatment. This study provided valuable insights into the separation mechanism of NF membranes with charged active layers for removing emerging pollutants, highlighting the synergistic interplay of the Donnan effect and size exclusion for efficient treatment of emerging pollutants.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 118994"},"PeriodicalIF":8.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941747","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

Unveiling the underlying mechanisms of performance loss induced by compaction in SWRO membranes 揭示由SWRO膜压实引起的性能损失的潜在机制

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-09 DOI: 10.1016/j.desal.2025.118991

Zhaojing Jing , Xinxia Tian , Yangyang Wei , Jian Wang , Haitao Wang , Zhaokui Li , Na Chang

{"title":"Unveiling the underlying mechanisms of performance loss induced by compaction in SWRO membranes","authors":"Zhaojing Jing , Xinxia Tian , Yangyang Wei , Jian Wang , Haitao Wang , Zhaokui Li , Na Chang","doi":"10.1016/j.desal.2025.118991","DOIUrl":"10.1016/j.desal.2025.118991","url":null,"abstract":"<div><div>Improving the compaction resistance of seawater reverse osmosis (SWRO) membranes is critical for enhancing seawater desalination efficiency. However, the specific mechanisms of performance degradation resulting from compaction effects in SWRO membranes remain unclear. To elucidate the dominant factors contributing to the decline in permeate flux caused by membrane compaction, the 60-day continuous performance of self-made and commercial LG membranes under cross-flow filtration conditions was studied. The micro- and sub-micro structural morphology of the membranes was characterized using X-ray scattering in combination with SEM, TEM, and AFM. During long-term operation, macropores of the polysulfone substrate were compacted, but no significant changes were observed at the sub-microscopic level. In addition, the macroscopic structure of the polyamide separation layer was not notably affected. However, in both the self-made and LG membranes, the polyamide inter-chain molecular spacing was decreased after compaction, with reductions of 0.07 Å and 0.04 Å, respectively. This reduction explains the decrease in flux of the self-made and LG membranes of 42.10 % and 32.55 %, respectively, along with the increased salt rejection. These results reveal the key mechanisms behind the decrease in permeability during the compaction process from a sub-microscopic perspective, providing valuable insights for the development of pressure-resilient, high-performance SWRO membranes.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 118991"},"PeriodicalIF":8.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928339","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

Parametric optimization of single-effect distillation via artificial neural network for desalination process 基于人工神经网络的海水淡化过程单效蒸馏参数优化

IF 8.3 1区工程技术

Desalination Pub Date : 2025-05-09 DOI: 10.1016/j.desal.2025.118993

Darren Tze Huei Lee , Ying Pio Lim , Heng Kam Lim , Yew Mun Hung

{"title":"Parametric optimization of single-effect distillation via artificial neural network for desalination process","authors":"Darren Tze Huei Lee , Ying Pio Lim , Heng Kam Lim , Yew Mun Hung","doi":"10.1016/j.desal.2025.118993","DOIUrl":"10.1016/j.desal.2025.118993","url":null,"abstract":"<div><div>With the growing global demand for clean water, efficient and sustainable desalination technologies are becoming increasingly critical. This study explores the optimization of a single-effect distiller (SED) for desalination using artificial neural network modeling, specifically a multi-layer perceptron (MLP), benchmarked against support vector regression (SVR) and linear and polynomial regression models. The models predict the distillate mass flow rate under varying operating conditions, including hot-water temperature, cold-water temperature, and vacuum pressure. Among the models, the MLP demonstrates superior performance, achieving an <em>R</em><sup>2</sup> of 0.9671 and an RMSE of 0.3867 g/min, compared to those of SVR with <em>R</em><sup>2</sup> of 0.9658 and RMSE of 0.3884 g/min. Contour plots generated by the MLP model provided actionable insights, identifying optimal operating conditions for maximizing the distillate mass flow rate. Specifically, the optimal performance is achieved with high hot-water temperatures (above 85 °C), low cold-water temperatures (approximately 22 °C), and vacuum pressures below 10 kPa. These conditions are practical, as room-temperature seawater can effectively cool the condenser without additional energy for cooling, while solar energy can heat the hot water. A conceptual design for a solar-powered SED that integrates these findings, offering a sustainable and energy-efficient desalination solution is proposed. The machine learning-driven optimization framework presented here provides a valuable pathway for addressing global water scarcity challenges.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"613 ","pages":"Article 118993"},"PeriodicalIF":8.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935183","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