Desalination最新文献

{"title":"Wastewater degradation driven by the membrane voltage in a closed-loop reverse electrodialysis system integrated with air-gap diffusion distillation technology","authors":"Qiang Leng ,&nbsp;Feilong Li ,&nbsp;Yihao Ma ,&nbsp;Chunxiao Zhang ,&nbsp;Lin Wang ,&nbsp;Zhanwei Wang ,&nbsp;Xi Wu","doi":"10.1016/j.desal.2025.118743","DOIUrl":"10.1016/j.desal.2025.118743","url":null,"abstract":"<div><div>Air-gap diffusion distillation (AGDD) has been frequently integrated with reverse electrodialysis (RED) to form a chemical heat engine for the utilization of low-grade thermal energy (LGH). This chemical heat engine can convert LGH into salinity gradient energy (SGE), which is then transformed into electrical energy. Due to the compatibility of the RED system, the AGDD-RED heat engine can also be employed for the degradation of organic wastewater. This paper presents the development of a mathematical simulation model for an AGDD-RED system designed specifically for wastewater treatment. The theoretical impact of various parameters, including feed solution concentration, flow rate, and changes in heat source temperature on system performance, are simulated and discussed. The heat engine for wastewater treatment achieves a conversion efficiency of 4.57 % in transforming LGH into SGE, resulting in a final electricity conversion efficiency of 0.84 %. The heat engine utilized for wastewater treatment attains a chemical oxygen demand (COD) removal rate of 63.33 % after 4 h. Additionally, in optimal conditions, the energy conversion efficiency elevates to 0.90 %, while the energy consumption for per unit COD degradation is optimized to 9.81 × 10³ kWh∙kgCOD⁻¹. This research provides a novel approach for utilizing low-grade thermal energy in the field of wastewater degradation.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118743"},"PeriodicalIF":8.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512088","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":"Modulating hydration chemistry of GO/CSH antibacterial hydrogel evaporator toward high-efficiency solar-driven interfacial desalination","authors":"Min Liu,&nbsp;Xue-Ting Jin,&nbsp;Si-Wei Sun,&nbsp;Jie Zhao,&nbsp;Cheng Xue,&nbsp;Yang-Hui Luo","doi":"10.1016/j.desal.2025.118731","DOIUrl":"10.1016/j.desal.2025.118731","url":null,"abstract":"<div><div>Solar-driven interfacial desalination (SDID) is regarded as a low-cost, environmentally friendly, and sustainable technology for clean water production, contributing to the global decarbonization. However, it remains challenging to achieve high evaporation rate in high-salinity brines and avoid bio-fouling issues. Herein, an antibacterial hydrogel solar evaporator (AHSE) with outstanding hydratability is developed by cross-linking graphene oxide‑calcium silicate hydrate (GO-CSH) with polyvinyl alcohol (PVA) and N-(phosphonomethyl) iminodiacetic acid decorated polyethyleneimine (PMIDA-PEI) for high-efficiency SDID. The AHSE manifests orderly aligned porous structure with uniformly loaded GO-CSH as hydrophilic channel, improving the capillary-wicking ability of microchannels for rapid water replenishment. Theoretical calculations reveal that the hydration chemistry of AHSE can be enhanced due to the weakened hydrogen bond interaction between CSH and polymer networks, thus benefiting the exposure of hydratable sites for a decreased vaporization enthalpy. As a result, an evaporation rate of 3.25 kg m⁻² h⁻¹ and an energy conversion efficiency of 95 % under one sun irradiation are achieved in 25 wt% brine without salt accumulation. In addition, AHSE exhibits excellent antibacterial activity, as well as the antifouling functionality, guaranteeing the durability of evaporator and freshwater safety in practical applications. This work provides novel insights into the design of high performance solar-driven evaporators at a molecular level.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"604 ","pages":"Article 118731"},"PeriodicalIF":8.3,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474007","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":"Fertilizer-infused novel GO-alginate-polyacrylic acid hydrogels for groundwater extraction in irrigation applications","authors":"Ahmed Mamdouh Aboulella ,&nbsp;Abdelhamid Ads ,&nbsp;Adetunji Alabi ,&nbsp;Maryam R. Al Shehhi ,&nbsp;Kin Liao ,&nbsp;Rahul Raveendran Nair ,&nbsp;Linda Zou","doi":"10.1016/j.desal.2025.118727","DOIUrl":"10.1016/j.desal.2025.118727","url":null,"abstract":"<div><div>Superhydrophilic hydrogels are synthesized and infused with fertilizer for effective groundwater extraction. Firstly, the synthesis of alginate-polyacrylic acid hydrogels (H1, H2, and H3) was optimized by using an organic crosslinker and an initiator at different concentrations; then the synthesized hydrogels were tested for deionized (DI) water production. The H1 hydrogel showed the highest water production of 20 ± 1.6 mL and was selected for further experimentation. Afterward, graphene oxide (GO) was incorporated into the H1 hydrogel to fabricate hydrogels HG1 and HG2. It was found that HG1 hydrogel achieved higher water production at 33 ± 1.1 mL, compared to the H1 hydrogel without GO, the addition of GO enhanced the hydrogel's water production performance by 65 %. Furthermore, the HG1 hydrogel was soaked in concentrate fertilizer solutions of KCl and KNO₃, respectively, to increase hydrogel's inner salinity and osmotic pressure. In the groundwater desalination experiments, the KCl-infused hydrogel produced 39 ± 2.0 mL of diluted fertilized water, which was 30 % higher than that of the KNO₃-infused hydrogel. Moreover, the HG1 hydrogel achieved 99.9 % removal of Mg²⁺ and Na⁺ and 96.2 % of Ca²⁺, while the concentration of the K⁺ in the treated water was enriched by 7.7 times; such nutrient-rich water was suitable for agricultural fertigation. The superhydrophilic GO-alginate-polyacrylic acid-GO hydrogel could be used as a novel drawing agent for energy-efficient desalinating brackish groundwater and producing fertilized water for agriculture applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"604 ","pages":"Article 118727"},"PeriodicalIF":8.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464625","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":"Enhancing oil/water emulsion separation with inkjet printed beetle-inspired zeolitic imidazolate framework-67 modified membranes","authors":"Xinyu Hu,&nbsp;Hongli Xie,&nbsp;Hao Wang,&nbsp;Liguo Shen,&nbsp;Renjie Li,&nbsp;Hongjun Lin,&nbsp;Leihong Zhao,&nbsp;Genying Yu","doi":"10.1016/j.desal.2025.118729","DOIUrl":"10.1016/j.desal.2025.118729","url":null,"abstract":"<div><div>Efficient oil/water emulsion separation remains a critical challenge in industrial wastewater treatment due to the stability of emulsified oil droplets and the complexity of traditional membrane modification techniques. This study introduced a novel approach by employing a green, convenient, and controllable inkjet printing technique to fabricate a new inversely beetle-inspired hydrophobic zeolitic imidazolate framework-67 (ZIF-67) nanoparticle-modified tannic acid (TA)‑titanium (IV) bilayer structure on a polyvinylidene fluoride (PVDF) substrate. The resulting PVDF/TA-Ti(IV)/ZIF-67 membrane significantly enhanced the separation efficiency of oil/water emulsions. The TA-Ti(IV) layer not only enhanced the adhesion and uniform distribution of ZIF-67 but also minimized reagent consumption, simplifying the fabrication process. The hydrophobic ZIF-67 particles on the membrane served as localized active sites, facilitating the coalescence of small oil droplets within the emulsion, thus achieving effective demulsification and transforming stable oil-water emulsions into easily separable, unstable emulsions. This innovative membrane demonstrated optimal flux and rejection rates in oil/water emulsion separation. Its water flux exceeded 311.0 L·m⁻²·h⁻¹ in gasoline, diesel, and soybean oil emulsions, approximately 5.5 times that of the unmodified PVDF membrane, while maintaining an oil rejection rate of over 99.6 %. Remarkably, the PVDF/TA-Ti(IV)/ZIF-67 membrane retained over 99 % separation efficiency after six filtration cycles, underscoring its exceptional antifouling performance and long-term operational stability. The innovative membrane developed in this study offers a cost-effective, scalable, and environmentally sustainable solution for large-scale oil/water emulsion treatment. Its bio-inspired wetting structure significantly enhances flux, oil rejection, and antifouling capabilities, marking a major advancement in industrial water treatment applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"604 ","pages":"Article 118729"},"PeriodicalIF":8.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474006","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":"Mechanism of sodium alginate (SA) fouling with the co-existing cations in membrane distillation process","authors":"Hang Xu ,&nbsp;Chen Yao ,&nbsp;Jun Ma ,&nbsp;Ao Wang ,&nbsp;Yang Li ,&nbsp;Mingmei Ding","doi":"10.1016/j.desal.2025.118728","DOIUrl":"10.1016/j.desal.2025.118728","url":null,"abstract":"<div><div>The interaction between organic and inorganic membrane fouling has garnered extensive attention. However, the specific roles of co-existing cations in alginate-induced fouling during the membrane distillation (MD) process remain inadequately investigated. This study explored the influence of sodium and calcium ions on the fouling behavior of sodium alginate (SA) in MD. Results illustrate that fouling tendency followed the order: SA (adding Na⁺) group &gt; SA (adding Na⁺ and Ca²⁺) group &gt; SA (adding Ca²⁺) group &gt; pure SA group. Moreover, the addition of salts facilitated the formation of reversible fouling, with Na⁺ contributing to higher reversible membrane resistance due to salt crystal growth. As ionic strength increased, the flux decline rate gradually accelerated in both the SA (adding Na⁺) and SA (adding Na⁺ and Ca²⁺) groups. Conversely, elevating the ionic strength of Ca²⁺ mitigated fouling by forming loose, hydrophilic gel-like structures. Additionally, modified Hermia fouling models, along with the concentration polarization model, were used to gain deeper insights into the mechanisms of membrane fouling.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118728"},"PeriodicalIF":8.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512087","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":"Multifunctional carbon/biomass composite aerogel with a layered structure for efficient solar-driven high-viscous oily seawater purification","authors":"Yihao Guan ,&nbsp;Wenjun Zhang ,&nbsp;Yuhan Liu ,&nbsp;Sijing Cao ,&nbsp;Zhining Wang ,&nbsp;Yiming Li","doi":"10.1016/j.desal.2025.118730","DOIUrl":"10.1016/j.desal.2025.118730","url":null,"abstract":"<div><div>High-viscosity crude oil spills on seawater surfaces are among the most challenging marine environmental disasters due to their recovery difficulties. Additionally, soluble organic pollutants within the oil phase can easily enter aquatic systems. This underscores the urgent need for bifunctional materials capable of mitigating the environmental hazards of oil spills in complex scenarios. In this study, we present a superhydrophobic, bifunctional chitosan-based aerogel featuring a tree-like, multi-layered hierarchical structure, fabricated via the directional freeze-casting technique. This aerogel, referred to as GC@CS, is designed to enhance crude oil recovery while simultaneously addressing the removal of soluble pollutants. Hydrothermally carbonated carbon (HTCC), valued for its exceptional photothermal conversion and photocatalytic properties, was incorporated into the aerogel. Additionally, graphene was integrated to enhance light absorption and vertical heat transfer efficiency. We systematically investigated how variations in sunlight intensity and aerogel pore structure affect oil adsorption rates and the degradation of GC@CS with different organic dyes. Importantly, GC@CS efficiently degrades soluble dyes, representing organic pollutants in water, through an adsorption-photocatalysis process. Notably, the GC@CS aerogel is biodegradable and does not cause secondary environmental pollution. The novel chitosan-based aerogel GC@CS shows significant potential for broad applications in oil spill remediation and environmental cleanup.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"604 ","pages":"Article 118730"},"PeriodicalIF":8.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D printing a cellular channel sponge for high-efficiency liquid collection and solar evaporation","authors":"Zhengyi Mao ,&nbsp;Fengqian Hao ,&nbsp;Yao Yao ,&nbsp;Wanying Wang ,&nbsp;Xuliang Chen ,&nbsp;Fucong Lyu ,&nbsp;Lu Yao ,&nbsp;Qiliang Wang ,&nbsp;Jian Lu","doi":"10.1016/j.desal.2025.118725","DOIUrl":"10.1016/j.desal.2025.118725","url":null,"abstract":"<div><div>Rapid liquid collection plays an important role in many environmental and health-related applications, such as oil spill cleanup and clinical sampling. However, the low-cost and the energy-effective liquid absorbing remain a grand challenge, especially for viscous liquids. Here, by mimicking, scaling up, and rationally designing the microchannels of animals' cornea, a sponge with 3D-cellular microfluidic channels, which has a large liquid absorption coefficient, was proposed and prepared using 3D printing. Compared with the sponge with random pores, the 3D-printed sponge has both faster absorption speed and larger capacity due to controllable channel size, low tortuosity, and large porosity of the cellular channels. Moreover, by combining with the photothermal effect, the 3D-printed sponge exhibits superior absorption performance for highly viscous curd oil under the irrigation of sunlight. The 3D printing endowed topographic surface also makes the 3D-printed sponge as the promising candidate for solar water evaporation. The design of sponge with cellular channels shows great potential in eco-friendly, low-cost, and high-efficiency collection of liquids with various viscosities and solar water evaporation.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"604 ","pages":"Article 118725"},"PeriodicalIF":8.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480485","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":"Tunnel-phase α-, β-, and γ-MnO2 for salt removal in hybrid capacitive deionization","authors":"Minh Dai To ,&nbsp;Tran Nhac Khoa Nguyen ,&nbsp;Tuan Anh Dao ,&nbsp;Tan Le Hoang Doan ,&nbsp;Minh-Thuan Pham ,&nbsp;Wen Jen Lee ,&nbsp;Thai Hoang Nguyen ,&nbsp;Viet Hai Le ,&nbsp;Le Thanh Nguyen Huynh","doi":"10.1016/j.desal.2025.118726","DOIUrl":"10.1016/j.desal.2025.118726","url":null,"abstract":"<div><div>Urchin-like MnO₂ polymorphs (α-, β-, and γ-) were successfully synthesized via a hydrothermal method with precise parameter optimization using a factorial design. This study provides the first comprehensive exploration of how tunnel-phase structures influence desalination performance in hybrid capacitive deionization. Among these polymorphs, α-MnO₂ exhibited the most uniform urchin-like morphology with larger [2 × 2] tunnel structures, facilitating optimal ion transport and enhanced electrochemical properties. Electrochemical evaluations revealed that α-MnO₂ achieved the highest specific capacitance of 148 F/g at 5 m<em>V</em>/s, significantly outperforming β-MnO₂ and γ-MnO₂. For desalination applications, α-MnO₂ demonstrated a record-high NaCl adsorption capacity of 24.4 mg/g at 1.4 <em>V</em>, surpassing the performance of γ-MnO₂ (14.5 mg/g) and β- MnO₂ (5.5 mg/g). These findings underscore the transformative potential of α-MnO₂, showcasing its scalability and applicability for next-generation water treatment and energy storage systems.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118726"},"PeriodicalIF":8.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549655","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":"Salinity gradient energy of 109 first-class water systems in Japan","authors":"Kotomi Watanabe ,&nbsp;Yuri Akiba ,&nbsp;Hiroshi Ishidaira ,&nbsp;Hiroyuki Shima","doi":"10.1016/j.desal.2025.118706","DOIUrl":"10.1016/j.desal.2025.118706","url":null,"abstract":"<div><div>Salinity gradient energy (SGE) is the physico-chemical energy released from an aqueous solution when freshwater is mixed with salt water. SGE is expected to be an alternative energy source that is not affected by weather or time of day, especially near estuaries, where large amounts of water can be taken from rivers and the sea. In this study, we theoretically evaluated the SGE potential and electric power available in 109 major rivers in Japan to identify suitable locations for SGE applications. Furthermore, we examined the usefulness of SGE by comparing the amount of electric power extractable from SGE to that obtained from other power generation methods.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118706"},"PeriodicalIF":8.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced surface-engineered fluorinated polyimide membranes for sustainable high-salinity water desalination","authors":"Toheeb O. Obidara ,&nbsp;Mohammed Abdul Azeem ,&nbsp;Dahiru Umar Lawal ,&nbsp;Mahmoud A. Abdulhamid ,&nbsp;Turki N. Baroud","doi":"10.1016/j.desal.2025.118721","DOIUrl":"10.1016/j.desal.2025.118721","url":null,"abstract":"<div><div>The escalating global demand for freshwater has intensified the development of efficient and sustainable membranes for water purification. Membrane distillation (MD) is a promising technology for the treatment of highly saline seawater and wastewater. However, MD membranes require significant improvements to ensure excellent separation efficiency. This study presents the fabrication of novel recyclable fluorinated polyimide-based membranes (i.e., 6FDA-TMPD), prepared from 4,4′-(hexafluoroisopropylidene) diphtalic anhydride (6FDA) and 2,3,5,6-tetramethyl-<em>p</em>-phenylenediamine (TMPD), with tailored morphologies through vapor-induced phase separation (VIPS) technique. This process involves controlled exposure of polymer solutions to vapor, to precisely tune membrane porous structure and surface characteristics without chemical modifiers or nanoparticle incorporation. Notably, controlling the vapor type (ethanol vs water) and exposure duration transforms the membrane's surface structure from a spherical, nodule-like to a highly porous and open interconnected structure, resulting in a significant increase in hydrophobicity, yielding a water contact angle of 141.6°. Moreover, the flux increased by 43% from 14.59 to 20.85 kg m⁻² h⁻¹, while maintaining excellent salt rejection of ∼99.7% when treating high-salinity solutions (70,000 ppm) in air-gap membrane distillation (AGMD). These findings provide valuable insights into the synthesis and optimization of high-performance 6FDA-TMPD-based membranes and propose a sustainable and facile alternative to conventional fabrication methods, paving the way for practical solutions for desalination and various wastewater treatment applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118721"},"PeriodicalIF":8.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520237","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}