Desalination and Water Treatment最新文献

A novel strategy to upcycle the waste masks: Synthesis of chelating adsorbent and application in heavy metal removal 废弃口罩资源化利用的新策略：螯合吸附剂的合成及其在重金属去除中的应用

4区工程技术

Desalination and Water Treatment Pub Date : 2026-01-01 DOI: 10.1016/j.dwt.2026.101646

Dezhi Zhao, Haiping Chen, Yuyang Tian, Yuan Liu

{"title":"A novel strategy to upcycle the waste masks: Synthesis of chelating adsorbent and application in heavy metal removal","authors":"Dezhi Zhao, Haiping Chen, Yuyang Tian, Yuan Liu","doi":"10.1016/j.dwt.2026.101646","DOIUrl":"https://doi.org/10.1016/j.dwt.2026.101646","url":null,"abstract":"The COVID-19 pandemic has brought about increasing demand of face masks, however, due to the inadequate disposal, it has caused great environmental problems. In this study, we try to recycle these wastes to fabricate chelating materials for the potential application in heavy metal removal from wastewater. Surface characteristics of the prepared amine-modified polypropylene (AMP) adsorbent were identified by advanced methods. The introduced amino groups endowed AMP a more basic and hydrophilic surface, which facilitated electrostatic attraction with cations in acidic to neutral conditions. Moreover, batch experiments showed the adsorption of heavy metals onto the AMP was pH dependent and followed pseudo-second-order kinetic model and Langmuir adsorption isotherm model, and the theoretical adsorption capacities were 58.275, 62.500 and 58.207 mg/g for Pb 2+ , Cu 2+ and Zn 2+ , respectively. In particular, the prepared AMP can be regenerated for 10 cycles with relatively stable heavy metal absorption capacity. Chemical adsorption was proposed as the main adsorption mechanism, as N worked as electron donor to form complex with metal ions, and metal salt crystal growth was also observed on AMP surface. The favorable adsorption capacity and reusability of AMP demonstrated the potential of upcycling the waste masks in wastewater treatment.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"325 1","pages":"101646-101646"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147917066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antibiotic removal from aqueous solutions using CTF: Equilibrium, kinetic, and thermodynamic studies 使用CTF从水溶液中去除抗生素：平衡，动力学和热力学研究

4区工程技术

Desalination and Water Treatment Pub Date : 2026-01-01 DOI: 10.1016/j.dwt.2026.101633

Chunxin Wang, Xiaqi Zhu, Yutong Sui, Wenqi Tang, Huanyu Zhao

引用次数: 0

An enhanced pH-response CS/CaO₂ nanocomposite with nucleocapsid structure for environmental remediation: Preparation, characterization, and application 具有核衣壳结构的环境修复增强ph响应CS/CaO₂纳米复合材料：制备、表征及应用

4区工程技术

Desalination and Water Treatment Pub Date : 2026-01-01 DOI: 10.1016/j.dwt.2026.101634

Hui Xia, Quanhui Hu, Qingchao Zhang, Bangwen Lu, Xiaorui Guo, Jungang Guo, Wenjing Zhang

{"title":"An enhanced pH-response CS/CaO₂ nanocomposite with nucleocapsid structure for environmental remediation: Preparation, characterization, and application","authors":"Hui Xia, Quanhui Hu, Qingchao Zhang, Bangwen Lu, Xiaorui Guo, Jungang Guo, Wenjing Zhang","doi":"10.1016/j.dwt.2026.101634","DOIUrl":"https://doi.org/10.1016/j.dwt.2026.101634","url":null,"abstract":"The formation process of contaminated groundwater is invariably associated with pH fluctuations caused by the intrusion of anthropogenic contaminants, including heavy metals and organic compounds. In this study, a pH-responsive CaO 2 nanocomposite wrapped in chitosan (CS/CaO 2 ) was successfully synthesized via a pH-regulated chemical precipitation method. The CS/CaO 2 exhibited a well-defined core-shell bilayer structure with particle sizes ranging from 100 to 200 nm. Significantly, the incorporation of the chitosan (CS) coating not only enhanced the pH responsiveness but also reduced nanoparticle agglomeration. The sequence of reagent addition was found to be critical in achieving successful encapsulation. Simulation experiments were performed to assess the remediation effect on organic p- nitrophenol (PNP) and inorganic heavy metals. The inner core CaO 2 , acting as a solid source of H 2 O 2 , would be released as the external CS was broken after experiencing pH response. A CaO 2 modified Fenton system was then provided for the oxidative degradation of PNP, and its concurrently generated Ca(OH) 2 could facilitate the precipitation and immobilization of heavy metals. Removal efficiency exceeded 95% under the optimized experimental conditions, demonstrating the high effectiveness of this approach. Overall, this study presents an enhanced pH-responsive nucleocapsid CS/CaO 2 nanocomposite with promising applications in the multi-contaminant remediation. • CS/CaO₂ nanocomposite with nucleocapsid structure were successfully prepared. • The intervention of polymer CS improved the pH response and reduced the nanoagglomeration. • The addition order of reagents played a crucial role in the encapsulated formation. • CS/CaO₂ had application potential in heavy metals or organic contamination removal.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"325 1","pages":"101634-101634"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147898918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient oxidation of ibuprofen by the Fe(III)/CaSO3 system: Assessment of key factors and elucidation of mechanism Fe(III)/CaSO3体系高效氧化布洛芬：关键因素评价及机理阐明

4区工程技术

Desalination and Water Treatment Pub Date : 2026-01-01 DOI: 10.1016/j.dwt.2026.101636

Yuqiong Gao, Qingqing Yang, Jiaxin Ma, Juxiang CHEN, Cong Li, Naiyun Gao

{"title":"Efficient oxidation of ibuprofen by the Fe(III)/CaSO3 system: Assessment of key factors and elucidation of mechanism","authors":"Yuqiong Gao, Qingqing Yang, Jiaxin Ma, Juxiang CHEN, Cong Li, Naiyun Gao","doi":"10.1016/j.dwt.2026.101636","DOIUrl":"https://doi.org/10.1016/j.dwt.2026.101636","url":null,"abstract":"This study employs the Fe(III)/CaSO 3 system to degrade ibuprofen (IBP) and elucidate the key factors and mechanisms. Negligible IBP degradation is observed when CaSO 3 and Fe(III) are applied individually, but their combination significantly enhances it. At initial pH 3, 40 μΜ Fe(III), and 200 μM sulfite, 92.2% of IBP was removed within 20 min. Quenching experiments indicated that SO 4 •– , •OH, and 1 O 2 collectively governed the degradation of IBP in the Fe(III)/CaSO 3 system. Additionally, dissolved oxygen is essential in the system by initiating the radical chain reactions. The degradation of IBP by the Fe(III)/CaSO 3 system is influenced by key operational parameters and the water matrix. Typically, the process exhibits optimal Fe(III) and sulfite concentrations and initial pH, an activation energy of 51.2 kJ·mol -1 , and is inhibited by common water constituents like humic acid (HA), Cl⁻, Br⁻ and Mg 2+ . Integrated LC/TOF/MS and DFT calculations identified hydroxylation and decarboxylation as the primary pathways for IBP degradation, with bioassays confirming decreased antibacterial activity due to toxic products. Overall, our finding indicate that the Fe(III)/CaSO 3 system is effective for the oxidation of IBP, but the process parameters need further optimization to enhance IBP degradation efficiency and reduce potential environmental risks. • CaSO 3 outperforms Na 2 SO 3 as a superior sulfite source in the Fe(III)/sulfite process for IBP degradation. • Quenching experiments indicate that SO 4 •– , •OH, and 1 O 2 collectively govern IBP degradation. • Process efficiency relies on optimal parameters but is hindered by water matrix components, needing further optimization. • Hydroxylation and decarboxylation are key pathways, producing toxic byproducts that decrease antibacterial activity.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"325 1","pages":"101636-101636"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reducing residual aluminum with carbon dioxide in drinking water treatment 用二氧化碳还原饮用水处理中的残铝

4区工程技术

Desalination and Water Treatment Pub Date : 2025-10-01 DOI: 10.1016/j.dwt.2025.101476

Ming Xiang, Yong Shen, Peng Gong, Zhenghua Wu, Jianjun Liang, Guilong Peng

{"title":"Reducing residual aluminum with carbon dioxide in drinking water treatment","authors":"Ming Xiang, Yong Shen, Peng Gong, Zhenghua Wu, Jianjun Liang, Guilong Peng","doi":"10.1016/j.dwt.2025.101476","DOIUrl":"https://doi.org/10.1016/j.dwt.2025.101476","url":null,"abstract":"This study evaluates the performance of carbon dioxide (CO 2 ) as a pH regulator for controlling residual aluminum (Al) in drinking water treated with polyaluminum chloride (PAC). Experimental results demonstrate that CO 2 dosing effectively lowers pH to the optimal range of 6.5–7.1, leading to a marked reduction in residual Al across different temperatures (15–25 ℃) and PAC dosages (10–60 mg/L). At 20 ℃, residual Al decreased from ≥ 0.30 mg/L under alkaline conditions (pH 8.35) to < 0.05 mg/L when adjusted with CO 2 to near-neutral pH. Turbidity removal also improved significantly, with minimum values reduced by more than 50 % compared to unadjusted conditions, and optimal performance achieved at 30–40 mg/L PAC. Compared with sulfuric acid, CO 2 -mediated pH regulation consistently achieved lower residual Al concentrations while minimizing sludge production and avoiding the introduction of sulfate ions. These findings highlight that CO 2 offers a safe, cost-effective, and environmentally sustainable alternative for pH adjustment in full-scale water treatment processes, ensuring improved water quality and reduced health risks associated with aluminum exposure.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"324 1","pages":"101476-101476"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147916056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Preparation of copper acetate/chitosan gel material and its adsorption performance and mechanism analysis for methyl orange dye wastewater 乙酸铜/壳聚糖凝胶材料的制备及其对甲基橙染料废水的吸附性能及机理分析

4区工程技术

Desalination and Water Treatment Pub Date : 2025-10-01 DOI: 10.1016/j.dwt.2025.101510

Ying Ding, Likai Ji, Yuqing Liu, Yangming Cui

{"title":"Preparation of copper acetate/chitosan gel material and its adsorption performance and mechanism analysis for methyl orange dye wastewater","authors":"Ying Ding, Likai Ji, Yuqing Liu, Yangming Cui","doi":"10.1016/j.dwt.2025.101510","DOIUrl":"https://doi.org/10.1016/j.dwt.2025.101510","url":null,"abstract":"Copper acetate/chitosan gel material was prepared for adsorption treatment of methyl orange dye wastewater. The prepared copper acetate/chitosan gel was well characterized via SEM and FT-IR to reveal the microstructure and composition. Besides, the adsorption performance and mechanism analysis of copper acetate/chitosan gel were investigated. The study on the ability to adsorb methyl orange showed that the adsorption capacity of copper acetate/chitosan gel was related to the coordination activity of amino and hydroxyl groups of copper acetate/chitosan gel. When the ratio of copper acetate/chitosan gel is 1:2, as the highest coordination activity, the adsorption capacity of methyl orange (465 mg/g) can reach the maximum. Furthermore, the adsorption process at equilibrium followed the Freundlich isotherm model. The kinetic behavior was well fitted by the pseudo-first-order model, indicating physical adsorption as a dominant role. This work can provide a reliable basis for adsorbents to remove recalcitrant dye pollutants, and has potential application in simultaneously adsorbing complex liquid pollutants.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"324 1","pages":"101510-101510"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147887016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A dual-triggered re-crosslinkable preformed particle gels (RC-PPGs) for enhanced fracture plugging in fractured low-permeability reservoirs 一种双触发的可再交联预形成颗粒凝胶（RC-PPGs），用于裂缝性低渗透油藏的裂缝封堵

4区工程技术

Desalination and Water Treatment Pub Date : 2025-10-01 DOI: 10.1016/j.dwt.2025.101519

Zhilin Sun, Wenyu Cui, Li Chen, Bai Wang, Jianjun Cao, Mingliang Luo, Kai Wang, Xiaodong Zhang

引用次数: 0

Two-nozzle electrospinning of SPSF-PEI/PES composite membranes with anti-swelling properties and efficient adsorption of anionic dyes 双喷嘴静电纺丝抗膨胀、高效吸附阴离子染料的SPSF-PEI/PES复合膜

4区工程技术

Desalination and Water Treatment Pub Date : 2025-10-01 DOI: 10.1016/j.dwt.2025.101540

Yinyu Chen, Mingfei Huang, Zuhui Qin, Lei Zhang, Jiahao Mo, Xianhui Li

引用次数: 0

Cu-N-TiO₂/g-C3N4 photocathode-driven sediment microbial fuel cells for azithromycin degradation and enhanced bioelectricity generation Cu-N-TiO 2 /g-C3N4光电阴极驱动沉积物微生物燃料电池用于阿奇霉素降解和增强生物发电

4区工程技术

Desalination and Water Treatment Pub Date : 2025-10-01 DOI: 10.1016/j.dwt.2025.101564

Muhammad Usman, Hamza Khaliq, Muhammad Ibrahim, Saeed Anwar, Muhammad Adnan, Ghulam Abbas Ashraf, Mutabar Latipova, Doniyor Jumanazarov, N. Sfina, Ahlem Guesmi

{"title":"Cu-N-TiO₂/g-C3N4 photocathode-driven sediment microbial fuel cells for azithromycin degradation and enhanced bioelectricity generation","authors":"Muhammad Usman, Hamza Khaliq, Muhammad Ibrahim, Saeed Anwar, Muhammad Adnan, Ghulam Abbas Ashraf, Mutabar Latipova, Doniyor Jumanazarov, N. Sfina, Ahlem Guesmi","doi":"10.1016/j.dwt.2025.101564","DOIUrl":"https://doi.org/10.1016/j.dwt.2025.101564","url":null,"abstract":"The widespread occurrence of antibiotic pollutants such as azithromycin (AZI) in aquatic habitats needs the development of efficient and long-term cleanup solutions. This study looks into the use of photocatalysis in conjunction with sediment microbial fuel cells (SMFCs) to degrade AZI and generate bioelectricity. We developed and analyzed a novel heterojunction photocatalyst, Cu-N-TiO₂/g-C₃N₄, coated onto a graphene conductive material (GCM), which serves as an effective photocathode. Comprehensive characterization (XRD, XPS, UV-Vis, and SEM) confirmed successful heterojunction production, with XPS revealing important impurity states from N and Cu co-doping. The improved heterostructure had a dramatically narrower bandgap of 1.02 eV, which increased its visible-light absorption capability. The Cu-N-TiO₂/g-C₃N₄ photocathode outperformed pure g-C₃N₄ (70.95%), Cu-N-TiO₂ (65.64%), and the control (49.21%) in SMFCs using natural sunshine, attaining 84.73% AZI degradation. While AZI stress reduced microbial diversity and hence hindered energy generation, the improved photocathodes enabled sustained bioelectricity production. This study identifies sunlight-driven SMFCs with customized heterojunction photocathodes as a potential, synergistic technique for the effective cleanup of antibiotic-contaminated water.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"324 1","pages":"101564-101564"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of PMDA@CS/PVA composite membranes and their sorption for Cu(II), Co(II), and Ni(II) in water: Experimental and statistical physics exploration PMDA@CS/PVA复合膜的制备及其对水中Cu（II）、Co（II）、Ni（II）的吸附：实验与统计物理探索

4区工程技术

Desalination and Water Treatment Pub Date : 2025-10-01 DOI: 10.1016/j.dwt.2025.101513

Jingyi Chen, Chunyu Ji, Junsheng Liu, Jie Zhang

{"title":"Preparation of PMDA@CS/PVA composite membranes and their sorption for Cu(II), Co(II), and Ni(II) in water: Experimental and statistical physics exploration","authors":"Jingyi Chen, Chunyu Ji, Junsheng Liu, Jie Zhang","doi":"10.1016/j.dwt.2025.101513","DOIUrl":"https://doi.org/10.1016/j.dwt.2025.101513","url":null,"abstract":"A series of new PMDA@CS/PVA composite membranes were fabricated by the crosslinking of pyromellitic dianhydride (PMDA) with chitosan (CS) and poly(vinyl alcohol) (PVA) in the presence of glutaraldehyde (GA) as a crosslinking agent. While, their adsorptions for Cu(II), Co(II), and Ni(II) in a single- and multiple mixed solutions were investigated. It was found that the incorporation of PMDA in the membranes can significantly enhance the adsorption capacity of membranes for these metals. The fitting of kinetic modeling s showed that the sorption manner of Cu(II), Co(II) and Ni(II) on the membranes obeyed the quasi-2nd kinetic modeling, indicating that it was dominated by chemisorption. The kinetic rate constants K 2 of membranes A-E for Cu(II), Co(II), and Ni(II) were in the region of 0.005–0.02, 0.026–0.082, and 0.002–0.053 [g/(h·mg)], respectively. The fitting of sorption isotherm modeling followed the Langmuir isotherm equation and the maximal Langmuir adsorption capacities for Cu(II), Co(II), and Ni(II) could reach 36.466, 32.119, and 30.916 mg/g, respectively. In addition, in the multi-component solutions, these membranes exhibited better selection for Cu(II) in Cu(II), Co(II), and Ni(II) mixed solutions. Moreover, it can be recycled five times when an EDTA was used as a de-sorbent. The exploration based on statistical physics principle confirmed that the adsorption of these membranes for Cu(II) is a mono-ion manner. These findings suggest that PMDA@CS/PVA composite membranes are promising sorbents for the removal of toxic metal ions from waste vehicle power batteries or metal-bearing wastewater. • PMDA@CS/PVA membranes was fabricated by the crosslinking of PMDA with CS and PVA. • The adsorption of Cu(II), Co(II), and Ni(II) on PMDA@CS/PVA membranes was valued. • Statistical physics analysis was used to explore the sorption manner of Cu(II). • Cu(II) can be favorably removed from Cu(II), Co(II), and Ni(II) mixed solutions.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"324 1","pages":"101513-101513"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0