Desalination最新文献_第4页

Solar powered reverse osmosis desalination: A systematic review of technologies, integration strategies and challenges 太阳能反渗透海水淡化：技术、整合策略和挑战的系统回顾

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-21 DOI: 10.1016/j.desal.2025.119228

Ehab M. Almetwally , M.A. Elazab , A.E. Kabeel , Youssef Yasser , Ahmed Elgebaly

{"title":"Solar powered reverse osmosis desalination: A systematic review of technologies, integration strategies and challenges","authors":"Ehab M. Almetwally , M.A. Elazab , A.E. Kabeel , Youssef Yasser , Ahmed Elgebaly","doi":"10.1016/j.desal.2025.119228","DOIUrl":"10.1016/j.desal.2025.119228","url":null,"abstract":"<div><div>The increasing global demand for freshwater and the depletion of conventional water resources have intensified the exploration of sustainable desalination technologies. Solar-powered reverse osmosis (RO) desalination emerges as a promising solution, leveraging renewable energy to mitigate environmental impacts and reduce operational costs. This systematic review examines the current state of solar-powered RO desalination, focusing on technological advancements, integration strategies, and prevailing challenges. The analysis encompasses various configurations, including photovoltaic (PV) systems, concentrated solar power (CSP), and hybrid models, assessing their performance, efficiency, and applicability across different geographical contexts. Key challenges identified include the intermittency of solar energy, high initial capital investment, and brine disposal issues. The review also highlights innovative solutions such as energy storage integration, advanced membrane materials, and policy frameworks that facilitate the adoption of solar-powered desalination. The findings underscore the potential of solar-powered RO systems in contributing to sustainable water management, particularly in arid and semi-arid regions.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"615 ","pages":"Article 119228"},"PeriodicalIF":8.3,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694396","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

Green chemistry for synthesizing carbon dots and their application in pollutant treatment and environmental protection 碳点合成的绿色化学及其在污染物处理和环境保护中的应用

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-21 DOI: 10.1016/j.desal.2025.119214

Tran Nam Anh , Nguyen Thi Hien , Hai-Linh Thi Dang , Nguyen Thi Bich Ngoc , Phan Thị Dien , Nguyen Minh Hoang , Nguyen Thi Hanh , Nguyen Thi Ha , Nguyen Manh Khai , Thuy Duong Pham , Van-Duong Dao

{"title":"Green chemistry for synthesizing carbon dots and their application in pollutant treatment and environmental protection","authors":"Tran Nam Anh , Nguyen Thi Hien , Hai-Linh Thi Dang , Nguyen Thi Bich Ngoc , Phan Thị Dien , Nguyen Minh Hoang , Nguyen Thi Hanh , Nguyen Thi Ha , Nguyen Manh Khai , Thuy Duong Pham , Van-Duong Dao","doi":"10.1016/j.desal.2025.119214","DOIUrl":"10.1016/j.desal.2025.119214","url":null,"abstract":"<div><div>Due to the outstanding properties and environmental friendliness inherent in carbon materials, carbon dots (CDs) have gained significant attention from scientists. According to the simplest and most traditional concept since their discovery, CDs are known as carbon-based nanoparticles with a size smaller than 10 nm, which can be synthesized through electrochemical methods. Over the past two decades, research has significantly expanded both the synthesis strategies and the applications of CDs across diverse fields. A growing trend in recent studies emphasizes environmentally friendly synthesis and applications of CDs in environmental protection. However, it is found that the term “green CDs” is often used ambiguously due to the lack of well-defined criteria for evaluating green synthesis routes. To address this issue, this review assesses different synthesis methods based on the 12 principles of green chemistry and proposes that a method meeting at least 9 out of 12 principles can be considered green. Furthermore, a comprehensive overview of CDs' applications in environmental protection, including sensing, adsorption, and degradation of pollutants, disinfection, anti-fungal, and membrane technology, is provided. It should be emphasized that no comprehensive review has systematically summarized the applications of CDs in this broad field. In addition, our findings highlight the advantages and limitations of current strategies and suggest key directions for future research. Finally, this work proposes a strategy to enhance the practical implementation of CDs in sustainable environmental technologies.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"615 ","pages":"Article 119214"},"PeriodicalIF":8.3,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703037","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

Electrocoagulation aerobic-anoxic gravity driven ceramic membrane (EC-OA-GDCM) for mariculture wastewater treatment: Enhanced nitrogen removal mechanism 电凝好氧-缺氧重力驱动陶瓷膜（EC-OA-GDCM）处理海水养殖废水：强化脱氮机制

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-21 DOI: 10.1016/j.desal.2025.119221

Xing Du , Nan Yu , Wei Song , Zhihong Wang , Tugui Yuan , Wenxiang Zhang

{"title":"Electrocoagulation aerobic-anoxic gravity driven ceramic membrane (EC-OA-GDCM) for mariculture wastewater treatment: Enhanced nitrogen removal mechanism","authors":"Xing Du , Nan Yu , Wei Song , Zhihong Wang , Tugui Yuan , Wenxiang Zhang","doi":"10.1016/j.desal.2025.119221","DOIUrl":"10.1016/j.desal.2025.119221","url":null,"abstract":"<div><div>The persistent challenge of achieving sustainable nitrogen removal in high-salinity mariculture wastewater necessitates advanced treatment strategies. This study presents a novel Gravity-Driven Membrane Integration Process: Electrocoagulation, Aerobic-Anoxic and Gravity-driven Ceramic Membrane (EC-OA-GDCM), aiming to improve the long-term and stable nitrogen removal efficiency for mariculture wastewater treatment. Key innovations include: (1) Synergistic nitrogen pathways: the iron-rich environment (Fe<sup>3+</sup> generated from EC) facilitated Anammox (<em>Candidatus Brocadia</em> and <em>Candidatus-Kuenenia</em>) and Feammox (<em>Geobacter</em>), working in tandem with heterotrophic denitrification to achieve desirable Total Nitrogen (TN) removal efficiency (effluent: Ammonia (NH3−N) < 0.1 mg/L and TN < 5 mg/L). (2) Robust phosphorus removal: Electrocoagulation-derived iron flocs achieved phosphorus removal (effluent: Total Phosphorus (TP) < 0.05 mg/L) through combined adsorption and chemical precipitation mechanisms. (3) Great filtration behavior: Macroporous carriers promoted biofilm development, reducing cake layer formation (average 1433.71 μm) while maintaining water purification (CODCr<15 ± 2 mg/L and SMZ < 10 ± 5 μg) and stable flux (10–11 LMH) without cleaning during the 140 d’ operation for synthetic/real mariculture wastewater (the salinity of 4-5 g/L) treatment. In addition, EC-OA-GDCM exhibited strong system stability and adaptability to the characteristics of dispersed and discontinuous inflow of mariculture wastewater. This integrated approach highlights the remarkable nitrogen removal efficiency in the GDCM system, and addresses critical limitations in treating complex mariculture wastewater with high salinity and refractory organics.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"615 ","pages":"Article 119221"},"PeriodicalIF":8.3,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694321","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

Li+ coordinator Cyclen in layer-by-layer nanofiltration membranes for Li+/Mg2+ separation Li+配位剂循环在层层纳滤膜中用于Li+/Mg2+分离

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-20 DOI: 10.1016/j.desal.2025.119220

Baixue Liu , Jiarui Chen , Juan Luo , Quan Yuan , Yaling Han , Ning Xue , Junyong Zhu , Tao He

{"title":"Li+ coordinator Cyclen in layer-by-layer nanofiltration membranes for Li+/Mg2+ separation","authors":"Baixue Liu , Jiarui Chen , Juan Luo , Quan Yuan , Yaling Han , Ning Xue , Junyong Zhu , Tao He","doi":"10.1016/j.desal.2025.119220","DOIUrl":"10.1016/j.desal.2025.119220","url":null,"abstract":"<div><div>Enhancement of Li<sup>+</sup> passage and separation of Li<sup>+</sup>/Mg<sup>2+</sup> has been a long-standing issue for nanofiltration membrane development. Literature has reported the efficacy of 1,4,7,10-tetraazacyclododecane or Cyclen, a Li<sup>+</sup> coordinator in interfacial polymerization membranes. This paper reported unexpected, novel observation of the impact of Cyclen on the layer-by-layer (LBL) self-assembled poly(sodium 4-styrenesulfonate) (PSS) and poly(allylamine hydrochloride) (PAH) nanofiltration membranes. By adjusting the ratio of Cyclen and PAH in the coating solution, optimized PSS/PAH membrane featured significantly improved MgCl<sub>2</sub> rejection of 97.6 %, an outstanding Li<sup>+</sup>/Mg<sup>2+</sup> separation factor (<em>S</em><sub><em>Li,Mg</em></sub>) of 46.0, as well as an enhanced charge density of 106.4 μmol/m<sup>2</sup>. A significant portion of Cyclen was lost during the LBL assembly. Minor contribution was identified through the encapsulation of Cyclen within PSS/PAH complexes and the fine-tuning of pore structure. Surprisingly, addition of Cyclen increased the pH of PAH coating solution, which manipulated the PAH conformation, degree of protonation, and adsorption kinetics, with clear impact on the membrane characteristics. The observation underscored the importance of the role of Cyclen in LBL nanofiltration membranes and demonstrated potential of macrocyclic additive-modified LBL membranes for critical Li<sup>+</sup> recovery applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119220"},"PeriodicalIF":8.3,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672197","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

Performance analysis of solar still using 10-E, sustainability, and heat transfer analysis: Exploring synergistic effects of PCM quantity and ultrasonic fogger 利用10-E、可持续性和传热分析分析太阳能蒸馏器的性能：探索PCM量和超声波雾化器的协同效应

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-19 DOI: 10.1016/j.desal.2025.119213

Jay R. Patel, Utkarsh Shrivastava, Y. Naresh, J. Banerjee

{"title":"Performance analysis of solar still using 10-E, sustainability, and heat transfer analysis: Exploring synergistic effects of PCM quantity and ultrasonic fogger","authors":"Jay R. Patel, Utkarsh Shrivastava, Y. Naresh, J. Banerjee","doi":"10.1016/j.desal.2025.119213","DOIUrl":"10.1016/j.desal.2025.119213","url":null,"abstract":"<div><div>The solar still has gained significant attention for its eco-friendly characteristics; however, its limited productivity hinders broader adoption. Phase change material (PCM) with high latent heat can improve the solar still productivity, hence it is explored in the current study. The novelty of the present research lies in the combined effect of PCM quantity and ultrasonic fogger. Four sets of SSs were used for experiments. First was CPSS (Conventional pyramidal SS), and the other three were MPSS-P-1.5, MPSS-P-3, and MPSS-P-4.5 with 1.5, 3, and 4.5 kg PCM, respectively. In experiments, CPSS produced 2.73 l/m<sup>2</sup> freshwater, and 36 %, 47.4 %, and 61.2 % increment was found with MPSS using 1.5, 3, and 4.5 kg PCM, respectively. The effect of the ultrasonic fogger was also investigated, and the maximum enhancement of 88 % was achieved with a 4.5 kg PCM and fogger combination (MPSS-F-P-4.5). The superior performance of MPSS-F-P-4.5 is also justified by high energy and exergy efficiencies of 40.4 % and 3.15 %, respectively. Heat transfer analysis indicated that the evaporation was the dominating heat transfer mode, and the evaporative heat transfer coefficient was increased by 32.3 % in MPSS-F-P-4.5 compared to CPSS. The combination of 4.5 kg PCM and fogger reduced the CPL value by 22.1 %, compared to CPSS. The environmental analysis indicated that 91.75 % more CO₂ can be saved using MPSS-F-P-4.5 compared to CPSS. The energy payback period and energy production factor for MPSS-F-P-4.5 were calculated as 0.98 yr and 1.02 yr<sup>−1</sup>, respectively. The integration of PCM with an ultrasonic fogger presents a promising, cost-effective, and sustainable approach to generating freshwater.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"615 ","pages":"Article 119213"},"PeriodicalIF":8.3,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694397","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

Polyester-polyamide interpenetrating network-structured nanofiltration membranes for efficient natural surface water purification 用于高效自然地表水净化的聚酯-聚酰胺互穿网状结构纳滤膜

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-19 DOI: 10.1016/j.desal.2025.119215

Xuewu Zhu , Feiyue Ge , Xinwei Kang , Liping Qiu , Jinyu Li , Xiaozhen Lu , Bin Liu , Daoji Wu , Zhe Yang , Daliang Xu

{"title":"Polyester-polyamide interpenetrating network-structured nanofiltration membranes for efficient natural surface water purification","authors":"Xuewu Zhu , Feiyue Ge , Xinwei Kang , Liping Qiu , Jinyu Li , Xiaozhen Lu , Bin Liu , Daoji Wu , Zhe Yang , Daliang Xu","doi":"10.1016/j.desal.2025.119215","DOIUrl":"10.1016/j.desal.2025.119215","url":null,"abstract":"<div><div>Conventional polyamide nanofiltration (NF) membranes face limitations in water treatment due to perm-selectivity trade-offs and chlorine sensitivity. This study introduced a phloroglucinol (PG) post-treatment strategy to construct polyester-polyamide interpenetrating network (IPN) NF membranes capable of overcoming these limitations. The IPN membranes featured a unique Turing surface morphology and a compact crosslinked network, which increased the effective filtration area while forming a thinner yet denser selective layer. This structural design enhanced hydrophilicity and negative surface charge, resulting in improved water permeance (24.5 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>) and a high organic matter rejection of 90.7 %. Notably, the modified membranes demonstrated remarkable chlorine stability, maintaining over 93 % of their initial rejection efficiency even after extreme chlorine exposure (20,000 ppm·h). This advancement addresses the rapid degradation of traditional polyamide membranes in chlorinated environments. Such extraordinary stability arises not only to from the inherent chlorine resistance of the polyester network but also from the multi-layered protective architecture enabled by the unique IPN configuration. The proposed IPN strategy provides an effective pathway for developing next-generation potable water treatment membranes.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119215"},"PeriodicalIF":8.3,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679346","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

Deep eutectic solvent flow electrodes for high-voltage desalination via flow electrode capacitive deionisation 通过流动电极电容去离子化用于高压海水淡化的深共晶溶剂流动电极

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-18 DOI: 10.1016/j.desal.2025.119218

Elena Gabirondo , Hafiz M. Saif , Vitor D. Alves , João G. Crespo , Liliana C. Tomé , Sylwin Pawlowski

{"title":"Deep eutectic solvent flow electrodes for high-voltage desalination via flow electrode capacitive deionisation","authors":"Elena Gabirondo , Hafiz M. Saif , Vitor D. Alves , João G. Crespo , Liliana C. Tomé , Sylwin Pawlowski","doi":"10.1016/j.desal.2025.119218","DOIUrl":"10.1016/j.desal.2025.119218","url":null,"abstract":"<div><div>This study pioneers the application of deep eutectic solvents (DES) as electrolytes in flow electrode capacitive deionisation (FCDI) desalination systems, providing a novel and improved alternative to aqueous flow electrodes. The deep eutectic solvent, choline chloride-urea (ChCl-U), was selected for its wide electrochemical stability window, allowing voltages exceeding 1.23 V, which is the limit for aqueous flow electrodes. The effect of water doping on the viscosity and performance of the DES flow electrodes was also investigated. Cyclic voltammetry confirmed the electrochemical stability, while rheological and electrochemical impedance spectroscopy revealed that the addition of water reduced the viscosity and enhanced the conductivity of ChCl-U, making it suitable for use as an electrolyte in FCDI. Desalination experiments were performed within a potential range of up to 2.2 V. The ChCl-U flow electrode, containing 20 wt% water and 10 wt% activated carbon, achieved the best balance between desalination efficiency (83 %), desalination rate (0.17 mg/cm<sup>2</sup>.min), and effluent quality. Furthermore, <sup>1</sup>H NMR analysis confirmed the absence of traces of the deep eutectic solvent in the dilute stream. The results highlight the potential of DES flow electrodes to enhance desalination processes by enabling higher operational voltages and improved performance, thereby paving the way for more efficient FCDI desalination systems.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119218"},"PeriodicalIF":8.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672195","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

“One stone, two birds”: A one-step sustainable dual-salt template route to synthesize glucose-derived porous carbon towards ammonium ion removal via capacitive deionization “一石二鸟”：一步可持续双盐模板路线合成葡萄糖衍生多孔碳，通过电容去离子去除铵离子

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-18 DOI: 10.1016/j.desal.2025.119212

Luwei Miao , Ming Gao , Ran Li , Ke Li , Weilong Xiao , Rencheng Li , Tianqi Ao , Yunjia Ling , Haiyan Mou , Wenqing Chen

{"title":"“One stone, two birds”: A one-step sustainable dual-salt template route to synthesize glucose-derived porous carbon towards ammonium ion removal via capacitive deionization","authors":"Luwei Miao , Ming Gao , Ran Li , Ke Li , Weilong Xiao , Rencheng Li , Tianqi Ao , Yunjia Ling , Haiyan Mou , Wenqing Chen","doi":"10.1016/j.desal.2025.119212","DOIUrl":"10.1016/j.desal.2025.119212","url":null,"abstract":"<div><div>Exploring novel carbon-based electrode materials is necessary for enhancing ammonium ion (NH+ 4) removal performance via capacitive deionization (CDI). Here, the glucose-based porous carbon electrodes (3G-3N-XK) are successfully prepared by a one-step sustainable dual-salt template method which plays double-roles of templating and activating. Benefiting from the high specific surface area, well-developed pore structure, proper defects, ample oxygen doping and predominant capacitive control dynamics, the as-received 3G-3N-XK electrodes manifest superior capacitive properties. As a result, the optimal 3G-3N-2K demonstrates exceptional NH+ 4 removal performance with outstanding adsorption capacity (27.97 mg g<sup>−1</sup>, 200 mg L<sup>−1</sup>), remarkable adsorption rate (0.044 mg g<sup>−1</sup> s<sup>−1</sup>, 200 mg L<sup>−1</sup>), high selectivity and great cyclic stability. Combined in-situ characterization and theoretical calculations further enhance the comprehension of NH+ 4 adsorption mechanism. The findings highlight the potential of 3G-3N-2K in CDI and lay a secure groundwork regarding the application of carbon-based electrodes for efficient ammonium removal.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119212"},"PeriodicalIF":8.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672196","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

Functional carboxylated graphene oxide aerogel spheres for high-efficiency cationic dye adsorption: Synergistic design, mechanism, and regeneration 用于高效阳离子染料吸附的功能性羧化氧化石墨烯气凝胶球：协同设计、机理和再生

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-16 DOI: 10.1016/j.desal.2025.119204

Jundong Zhao , Shui Liu , Qingyu Lai , Lele Liu , Yunan Gao

{"title":"Functional carboxylated graphene oxide aerogel spheres for high-efficiency cationic dye adsorption: Synergistic design, mechanism, and regeneration","authors":"Jundong Zhao , Shui Liu , Qingyu Lai , Lele Liu , Yunan Gao","doi":"10.1016/j.desal.2025.119204","DOIUrl":"10.1016/j.desal.2025.119204","url":null,"abstract":"<div><div>Cationic dyeing wastewater poses severe environmental threats by releasing persistent aromatic dyes that suppress aquatic photosynthesis, accumulate in soil to inhibit plant growth, and generate carcinogenic byproducts through photodegradation or chlorination, thereby disrupting ecosystem stability. Carboxylated graphene oxide/sodium alginate-activated carbon aerogel spheres (CGO-AC/SA) were engineered to address cationic dye pollution through a synergistic integration of tailored carboxylation, hierarchical porosity, and DFT-guided mechanistic insights. The composite achieved unprecedented adsorption capacities of 650.695, 546.471, and 385.634 mg/g for methyl violet (MV), methylene blue (MB), and basic fuchsin (BF), respectively. Multi-scale analyses revealed that carboxylation amplified surface charge density (<img>COO<sup>−</sup>) and enabled selective electrostatic interactions with cationic dyes, while hierarchical porosity (24.67 nm avg. pore diameter, 5.583 m<sup>2</sup>/g surface area) facilitated rapid diffusion kinetics (equilibrium within 16 h). DFT calculations correlated dye selectivity with electronic properties, identifying MV's low energy gap (ΔE<sub>GAP</sub> = 2.686 eV) and high dipole moment (μ = 2.004 D) as key drivers for enhanced π-π and electrostatic binding. Adsorption followed pseudo-second-order kinetics (R<sup>2</sup> > 0.993) and Sips isotherm models (R<sup>2</sup> > 0.997), confirming chemisorption-driven multilayer mechanisms. Despite robust regeneration (>78 % efficiency over five cycles via 0.10 M HCl), gradual capacity decline highlighted challenges in Ca<sup>2+</sup>-H<sup>+</sup> exchange stability. The aerogel's dual-function design, combining tunable surface chemistry with structural resilience, positions it as a scalable, high-performance solution for sustainable wastewater remediation.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119204"},"PeriodicalIF":8.3,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654265","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

Inspired by turtle: 3D raised knitted solar evaporator achieves efficient seawater desalination 灵感来自乌龟：3D凸起针织太阳能蒸发器实现高效海水淡化

IF 8.3 1区工程技术

Desalination Pub Date : 2025-07-15 DOI: 10.1016/j.desal.2025.119191

Xin Zhang , Junjie Pan , Ying Zhu , Wenqing Hai , Ye Zhang , Minghao Li , Baolong Zhang , Jinhua Jiang , Siyi Bi , Huiqi Shao , Nanliang Chen , Guangwei Shao

{"title":"Inspired by turtle: 3D raised knitted solar evaporator achieves efficient seawater desalination","authors":"Xin Zhang , Junjie Pan , Ying Zhu , Wenqing Hai , Ye Zhang , Minghao Li , Baolong Zhang , Jinhua Jiang , Siyi Bi , Huiqi Shao , Nanliang Chen , Guangwei Shao","doi":"10.1016/j.desal.2025.119191","DOIUrl":"10.1016/j.desal.2025.119191","url":null,"abstract":"<div><div>The efficient solar interface evaporation technology offers a solution to the scarcity of freshwater resources on Earth. At present, the efficient and cost-effective large-scale fabrication of devices exhibiting high-performance photothermal conversion and evaporation properties remains a key area of research. Our inspiration from turtles, coupled with traditional knitting techniques, led to the innovative design and production of a three-dimensional (3D) raised fabric utilizing heat-shrink properties of yarn. By integrating polydopamine (PDA) and carbon black (CB)/polyvinyl alcohol (PVA), we created a 3D fabric-base solar evaporator. Due to the periodic structural design and the synergistic effects of micro/nano-materials, this evaporator achieves a peak solar absorptance of 99.6 %, with surface temperatures reaching 152.9 °C in dry and 70 °C in wet conditions under 3 sun. It demonstrates an evaporation rate of 1.57 kg m<sup>−2</sup> h<sup>−1</sup> and an evaporation efficiency of 92.89 % under 1 sun. The evaporator demonstrates remarkable hydrophilicity, ensuring a sufficient water supply without any salt accumulation over extended periods of use, facilitating continuous water evaporation. It exhibits potential for applications in seawater desalination, heavy metal ion removal and organic dye elimination. Hence, bio-inspired solar evaporators present an effective strategy for sustainable seawater desalination.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"614 ","pages":"Article 119191"},"PeriodicalIF":8.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653777","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