Desalination最新文献_第9页

Salt-resistant, self-healing Janus polypyrrole melamine foam for oil/water separation and solar-driven desalination

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-02 DOI: 10.1016/j.desal.2025.118708

Bin Zhan , Kaiteng Zhang , Zhibiao Chen , Wenting Zhou , Xinlin Li , Maryam Aliabadi , Stegmaier Thomas , Urszula Stachewicz , Yan Liu

{"title":"Salt-resistant, self-healing Janus polypyrrole melamine foam for oil/water separation and solar-driven desalination","authors":"Bin Zhan , Kaiteng Zhang , Zhibiao Chen , Wenting Zhou , Xinlin Li , Maryam Aliabadi , Stegmaier Thomas , Urszula Stachewicz , Yan Liu","doi":"10.1016/j.desal.2025.118708","DOIUrl":"10.1016/j.desal.2025.118708","url":null,"abstract":"<div><div>Solar-driven desalination provides a new strategy to address the increasingly severe water shortage issue. Herein, a novel photothermal Janus polypyrrole melamine foam (JPMF) with self-healing and salt-resistance properties was fabricated by oxidative polymerization and one-side hydrophobic spray treatment. The superhydrophobicity on the top of JPMF surface presented rapid photothermal responsiveness, while the bottom surface showed superhydrophilicity and facilitated the continuous water supply. Under the irradiation of 1.0 sun, the evaporation rate and energy conversion efficiency of Janus JPMF was 1.52 kg·m<sup>−2</sup>·h<sup>−1</sup> and 92.02 %, respectively. Additionally, the JPMF was able to on demand separate various oil/water mixtures and emulsions, showing satisfactory separation efficiency (99.7 %). Moreover, the excellent photothermal properties of JPMF endowed it with self-healing properties, restoring the wettability from superhydrophilicity to superhydrophobicity after light irradiation. Besides, JPMF exhibited excellent salt resistance and effectively prevented salt deposition on the evaporation surface. The as-prepared JPMF provides a new approach to environmental protection and mitigating the freshwater crisis.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118708"},"PeriodicalIF":8.3,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549656","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

Crystallization and deposition of mixed potassium and sodium salts in supercritical water

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-01 DOI: 10.1016/j.desal.2025.118759

Libo Lu , Zijian Fang , Shi Liu , Xujun Li , Wen Cao , Hui Jin , Yunan Chen , Liejin Guo

{"title":"Crystallization and deposition of mixed potassium and sodium salts in supercritical water","authors":"Libo Lu , Zijian Fang , Shi Liu , Xujun Li , Wen Cao , Hui Jin , Yunan Chen , Liejin Guo","doi":"10.1016/j.desal.2025.118759","DOIUrl":"10.1016/j.desal.2025.118759","url":null,"abstract":"<div><div>The salt deposition problem seriously limits the industrialization application of hypersaline organic wastes in supercritical water gasification (SCWG). This study selected Na<sub>2</sub>CO<sub>3</sub>, K<sub>2</sub>CO<sub>3</sub>, Na<sub>2</sub>SO<sub>4</sub>, K<sub>2</sub>SO<sub>4</sub>, NaCl, and KCl to investigate the crystallization and deposition of mixed potassium and sodium salts via molecular dynamic simulations and experiments. The findings of molecular dynamics demonstrate that sodium salt will form a more compact cluster than potassium salt under the same conditions. The addition of potassium into sodium salt will increase the binding energy between salt and water molecules, indicating that adding potassium salt into sodium salt can hinder salt crystallization. Experiments confirm that the increase of K: Na can promote salt deposition into the reactor bottom under gravity instead of sticking to the reactor wall. As the K: Na increases from 0.0625 to 0.5, the proportions of Na<sub>2</sub>CO<sub>3</sub>, Na<sub>2</sub>SO<sub>4</sub>, and NaCl deposition at the reactor bottom increase from 38.16 %, 35.98 %, 55.05 %, to 50.39 %, 43.48 %, 68.59 %, respectively. In addition, the morphology analysis on salt deposition reveals that adding potassium salt into sodium salts can change the shape of mixed salts into that of potassium salts. The results provide fundamentals for salt management and separation in SCWG.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"606 ","pages":"Article 118759"},"PeriodicalIF":8.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552680","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

Systematic exploration of direct solar absorption potential to enhance direct contact membrane distillation

IF 8.3 1区工程技术

Desalination Pub Date : 2025-02-28 DOI: 10.1016/j.desal.2025.118740

Roberto Raffaele Meo , Lorenzo Craveri , Erica Bertozzi , Marco Malaguti , Alberto Tiraferri , Matteo Morciano , Matteo Fasano

{"title":"Systematic exploration of direct solar absorption potential to enhance direct contact membrane distillation","authors":"Roberto Raffaele Meo , Lorenzo Craveri , Erica Bertozzi , Marco Malaguti , Alberto Tiraferri , Matteo Morciano , Matteo Fasano","doi":"10.1016/j.desal.2025.118740","DOIUrl":"10.1016/j.desal.2025.118740","url":null,"abstract":"<div><div>Increasing concerns about global freshwater scarcity and the growing demand for renewable energy are stimulating the exploration of innovative technological solutions for sustainable water management. Thanks to an experimentally validated model, here we systematically assess the effectiveness of distributed solar heat in enhancing the productivity of direct contact membrane distillation (DCMD) for seawater desalination. The proposed study investigates the impact of various configurations and operating parameters, analyzing more than 1000 cases, focusing on optimizing heat and mass transfer, hence water flux, in counter-current and co-current channel designs. Our findings indicate that integrating solar heat can significantly improve DCMD performance, with productivity enhancements potentially exceeding 200%, especially at low cross-flow rates, by alleviating temperature polarization and enhancing vapor flux. The detailed analysis further reveals that the counter-current configuration consistently outperforms the co-current design under optimal conditions, achieving higher water fluxes and reduced polarization effects. Moreover, sensitivity studies underscore that fine-tuning channel dimensions and flow parameters is critical for maximizing energy efficiency and ensuring robust desalination performance. The results highlight the potential of solar-powered MD systems to provide sustainable and cost-effective freshwater solutions, particularly for off-grid and remote areas. By optimizing solar heat utilization and MD configurations, this study advances both theoretical understanding and practical applications in water desalination, promoting energy efficiency, operational cost reduction, and environmental sustainability.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"606 ","pages":"Article 118740"},"PeriodicalIF":8.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579270","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}

引用次数: 0

Covalent tensor hydrogel using a self-semisacrificing strategy for effective photothermal steam generation

IF 8.3 1区工程技术

Desalination Pub Date : 2025-02-28 DOI: 10.1016/j.desal.2025.118754

Yingqi Wang , Wenxin Lu , Hanyi Hou , Fei Yao , Xiaorui Li , Xin Du , Xingang Wang , Hongliang Dai , Hongya Geng

{"title":"Covalent tensor hydrogel using a self-semisacrificing strategy for effective photothermal steam generation","authors":"Yingqi Wang , Wenxin Lu , Hanyi Hou , Fei Yao , Xiaorui Li , Xin Du , Xingang Wang , Hongliang Dai , Hongya Geng","doi":"10.1016/j.desal.2025.118754","DOIUrl":"10.1016/j.desal.2025.118754","url":null,"abstract":"<div><div>Widespread access to solar-driven steam generation requires monolithic structures with enhanced light absorption, water transportation, and heat allocation. However, the precise assembly of building blocks necessary for this integration remains a considerable challenge. This study develops a superior covalent tensor hydrogel (CTH) consisting of microgels prepared using a microfluidic device. Our self-semisacrificial approach employs chitosan and polyethene glycol as linkers to automatically assembly their microgels, which can be further precisely regulated through ultrasonic treatment and ultraviolet irradiation. The hierarchically porous CTH features a rough upper layer that enhances light absorption and a hierarchically porous hydrogel matrix that localizes heat, promoting energy absorption and thermal management. This design enhances interfacial solar light absorption and thermal insulation, with a low thermal conductivity of 0.3 W m<sup>−1</sup> K<sup>−1</sup>, achieving a maximum evaporation rate of 3.1 kg m<sup>−2</sup> h<sup>−1</sup>. The vertical distribution of microgels within CTH creates a gradient capillary force, effectively driving water transport to the interface and enabling self-cleaning properties for prolonged effective water evaporation. This CTH monolith represents a highly effective replacement for current hydrogels in effective green solar energy usage.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118754"},"PeriodicalIF":8.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527143","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

Syncretizing photovoltaic module and air gap membrane distillation for simultaneous electricity and freshwater production: A comprehensive 5E study 光伏组件与气隙膜蒸馏同步进行，同时生产电力和淡水：5E 综合研究

IF 8.3 1区工程技术

Desalination Pub Date : 2025-02-25 DOI: 10.1016/j.desal.2025.118744

Cong Lai , Houcheng Zhang

{"title":"Syncretizing photovoltaic module and air gap membrane distillation for simultaneous electricity and freshwater production: A comprehensive 5E study","authors":"Cong Lai , Houcheng Zhang","doi":"10.1016/j.desal.2025.118744","DOIUrl":"10.1016/j.desal.2025.118744","url":null,"abstract":"<div><div>The integration of photovoltaic-membrane distillation (PV-MD) systems presents dual benefits of photovoltaic thermal regulation and freshwater cogeneration; however, the systematic evaluation of synergistic mechanisms in PV-air gap membrane distillation (PV-AGMD) systems remains insufficiently explored. This study addresses critical research gaps in unified multidimensional assessment frameworks and PV-AGMD parametric interactions. A comprehensive system-scale mathematical model was developed, incorporating 5E (energy, exergy, economic, environmental and engineering) analyses to evaluate system performance. Key operational parameters—solar irradiation, PV module temperature, feed flow velocity, air gap thickness, and membrane pore size—were systematically investigated through engineering design analysis. Through synergistic optimization, the system achieved exceptional performance metrics, including a power density of 139.16 W m<sup>−2</sup>, freshwater production rate of 2.44 kg m<sup>−2</sup> h<sup>−1</sup>, and energy and exergy efficiencies of 57.01 % and 49.39 %, respectively. Long-term operational stability was validated across diverse climatic conditions in Hong Kong, Hangzhou, Tianjin, and Dalian. Economic analysis based on Hong Kong data demonstrated competitive freshwater production costs of 10.54 USD m<sup>−3</sup> and significant CO₂ emission reductions of 387.75 tons annually per installation. These findings provide valuable insights into PV-AGMD synergies and offer practical implementation strategies for region-specific applications, contributing to the development of climate-adaptive cogeneration systems.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118744"},"PeriodicalIF":8.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529037","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

An efficient approach for simultaneous CO2 mineralization and nickel separation from laterite leachate

IF 8.3 1区工程技术

Desalination Pub Date : 2025-02-25 DOI: 10.1016/j.desal.2025.118738

Yuxiang Gao , Jinmao Hua , Sohrab Rohani , Wen Cao , Guoquan Zhang , Zhen Yang , Zhifeng Qin , Qingcai Liu , Weizao Liu

{"title":"An efficient approach for simultaneous CO2 mineralization and nickel separation from laterite leachate","authors":"Yuxiang Gao , Jinmao Hua , Sohrab Rohani , Wen Cao , Guoquan Zhang , Zhen Yang , Zhifeng Qin , Qingcai Liu , Weizao Liu","doi":"10.1016/j.desal.2025.118738","DOIUrl":"10.1016/j.desal.2025.118738","url":null,"abstract":"<div><div>Currently, nickel production is mainly based on a high−carbon−footprint refining process. An alternative low−carbon nickel recovery method is vital for sustainable development. This study presented a technique for nickel separation and CO<sub>2</sub> mineral sequestration from a nickel and magnesium−containing leachate. Eh − pH results showed that the conditions for forming nickel−ammonium complexes closely aligned with those for magnesium carbonate formation. Thus, magnesium was selectively separated by injecting CO<sub>2</sub> and ammonia. Under the conditions of Mg<sup>2+</sup> concentration of 0.8 mol/L, NH<sub>3</sub>/Mg molar ratio of 8, CO<sub>2</sub> flow rate of 200 ml/min, injection time of 60 min, and aging time of 60 min, magnesium precipitation ratio approached 100 %, with nickel loss below 1 %. Increased concentrations of [NH<sub>3</sub>] and [CO<sub>2</sub>] in the solution facilitated the separation of magnesium and nickel, while promoting the precipitation of magnesium ions as porous MgCO<sub>3</sub>·3H<sub>2</sub>O clusters. Nickel can be recovered as NiCO<sub>3</sub> from the Mg − depleted solution by evaporation. This paper integrated CO<sub>2</sub> mineralization with the recovery of valuable nickel into a single step, maximizing nickel selectivity and minimizing CO<sub>2</sub> emissions.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"604 ","pages":"Article 118738"},"PeriodicalIF":8.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480417","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 assessment for the zero‑carbon desalination plant using nanofiltration pretreatment and membrane contactor-based carbon mineralization technology

IF 8.3 1区工程技术

Desalination Pub Date : 2025-02-25 DOI: 10.1016/j.desal.2025.118746

Ji-Hun Mun , Chihyuk Ahn , Aqil Jamal , Tae-Hyun Bae

{"title":"Comparative assessment for the zero‑carbon desalination plant using nanofiltration pretreatment and membrane contactor-based carbon mineralization technology","authors":"Ji-Hun Mun , Chihyuk Ahn , Aqil Jamal , Tae-Hyun Bae","doi":"10.1016/j.desal.2025.118746","DOIUrl":"10.1016/j.desal.2025.118746","url":null,"abstract":"<div><div>This study proposes a zero‑carbon desalination plant design that incorporates nanofiltration (NF) pretreatment with membrane contactor-based CO<sub>2</sub> mineralization to address water scarcity issue through an environmentally sustainable approach. The NF pretreatment, utilizing NF90 and NF270 membranes, effectively reduces osmotic pressure and enhances the efficiency of the subsequent reverse osmosis (RO) process. The CO<sub>2</sub> mineralization process, a carbon capture and utilization technology, employs silane–modified polyvinylidene fluoride (PVDF) hollow fiber membranes to capture of CO<sub>2</sub> and convert it into stable carbonates (<span><math><msub><mi>CaCO</mi><mn>3</mn></msub></math></span> and <span><math><msub><mi>MgCO</mi><mn>3</mn></msub></math></span>). The study evaluates two scenarios with different NF strategies through a 3E (energy, environmental and economic) analysis. In Scenario 1, a high-performance NF pretreatment is used to increase the capacity of the carbon mineralization process. This results in a higher levelized cost of water (LCOW) for NF but reduces the LCOW for the RO and membrane contactor (MC) processes, achieving an optimal LCOW of $1.2953/m<sup>3</sup> at 70 % NF RE. Scenario 2, which prioritizes a more cost-effective NF pretreatment system (NF270), achieves a lower LCOW for NF due to its higher flux, reaching a minimum LCOW of 1.0403/m<sup>3</sup> at 80 % NF RE, despite higher RO costs. Scenario 2 is deemed more feasible than Scenario 1 due to its lower overall cost at a carbon offset price of $20/tonCO<sub>2</sub>. However, as the carbon price is projected to rise from $20 to $80 per ton by 2035, Scenario 1 is expected to become more economically viable over time. This highlights the need to adapt the NF strategy as carbon prices increase.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"605 ","pages":"Article 118746"},"PeriodicalIF":8.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520243","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

Bovine serum albumin modified polymer adsorptive membranes for the selective removal of As(III) from wastewater

IF 8.3 1区工程技术

Desalination Pub Date : 2025-02-25 DOI: 10.1016/j.desal.2025.118742

Yang Wang , Mingmei Ding , Jingyu Peng , Mingke Qiu , Yuxin Dai , Yang Li , Jingmin Ou , Li Gao

{"title":"Bovine serum albumin modified polymer adsorptive membranes for the selective removal of As(III) from wastewater","authors":"Yang Wang , Mingmei Ding , Jingyu Peng , Mingke Qiu , Yuxin Dai , Yang Li , Jingmin Ou , Li Gao","doi":"10.1016/j.desal.2025.118742","DOIUrl":"10.1016/j.desal.2025.118742","url":null,"abstract":"<div><div>The selective removal of trivalent arsenic (As(III)) from solutions is crucial for ensuring the safety of reclaimed water. Adsorption is a commonly used technique for removing As(III); however, current adsorption methods exhibit poor selectivity for the removal of As(III) and primarily rely on powdered materials, which have limited regeneration performance. Herein, we developed a membranization of bovine serum albumin (BSA) materials (BSAM) that not only enables the selective removal of As(III) from wastewater but also allows for simple recovery and reuse. BSAM demonstrated selective adsorption of As(III) from wastewater and a high adsorption capacity (26.3 ± 0.4 mg/g) for As(III) in the presence of various interfering ions. An in-depth analysis of As(III) adsorption onto BSAM using multiple adsorption models demonstrated that the process adhered to a monolayer chemical adsorption mechanism. The BSA on the surface of BSAM contains sulfhydryl groups with a strong affinity for As(III), facilitating the formation of a complex through specific binding with As(III), thereby achieving the selective removal of As(III) from wastewater. In addition, BSAM exhibited excellent stability and favorable regeneration performance, with the adsorption capacity for As(III) decreasing only slightly from approximately 26.3 ± 0.4 to 23.1 ± 0.2 mg/g after multiple regeneration cycles. Our work provides a valuable reference for the selective removal of As(III) from wastewater, while the membranized adsorbent materials offer a viable solution to the recovery challenges associated with powdered adsorbent materials, thereby providing new insights for the development of efficient adsorption materials.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"606 ","pages":"Article 118742"},"PeriodicalIF":8.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562905","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

Super Li+/Mg2+ sieving and regenerable potentials of a nanofiltration membrane with intermediate layers of positively-charged hyperbranched polyamide

IF 8.3 1区工程技术

Desalination Pub Date : 2025-02-25 DOI: 10.1016/j.desal.2025.118737

Xiaozhuan Zhang , Yilin Zhang , Guohua Zhao , Ying Zhang , Yutong Zhang , Yingyu Chang , Xiangyi Zhang , Bingbing Yuan , Ping Hu , Kejiang Zhao , Tatiana Plisko , Liang Zhao

{"title":"Super Li+/Mg2+ sieving and regenerable potentials of a nanofiltration membrane with intermediate layers of positively-charged hyperbranched polyamide","authors":"Xiaozhuan Zhang , Yilin Zhang , Guohua Zhao , Ying Zhang , Yutong Zhang , Yingyu Chang , Xiangyi Zhang , Bingbing Yuan , Ping Hu , Kejiang Zhao , Tatiana Plisko , Liang Zhao","doi":"10.1016/j.desal.2025.118737","DOIUrl":"10.1016/j.desal.2025.118737","url":null,"abstract":"<div><div>Constructing an intermediate layer has attracted extensive research interests in improving the separation efficiency of nanofiltration (NF) membrane. However, present NF membranes with intermediate layers face the problem of limited Li<sup>+</sup>/Mg<sup>2+</sup> sieving efficiency and costly regeneration. Here we reported the grafting of intermediate layer of positively-charged hyperbranched polyamides (HBPA/4-APL) on polysulfone ultrafiltration membrane (PSF-UFM) as substrate by diazotization coupling reaction, and then to form a NF membrane via the interfacial polymerization process. This study presented a novel approach to fabricate NF membrane with intermediate layers of HBPA/4-APL between negatively-charged polyamide skin layers. This study clearly elucidated that HBPA/4-APL intermediate layer could strictly regulate the structure of polyamide (PA) nanomembranes formed on PSF-UFM, resulting in enhanced ion sieving selectivity. Our membrane exhibited uniform nanostripes, fine-tuned aperture, and thinner thickness. Our membrane had a maximum water flux of 2.49 times that of PA nanomembranes formed on pristine PSF-UFM without HBPA/4-APL intermediate layer. The separation factor of Li<sup>+</sup>/Mg<sup>2+</sup> was 72.19, 63.75 and 60.34 when the Mg<sup>2+</sup>/Li<sup>+</sup> mass ratio in the feed solution was 7.65:1, 15.3:1 and 30.6:1, respectively. Our membrane had regenerable capability after in-situ HCl washing. So our NF membrane showed great promise for Li<sup>+</sup>/Mg<sup>2+</sup> separation. This work also offered a new strategy of robust regenerable membranes.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"604 ","pages":"Article 118737"},"PeriodicalIF":8.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480416","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

Rapid processing of dispersed hydrate-based purification for high-yield seawater desalination and wastewater treatment

IF 8.3 1区工程技术

Desalination Pub Date : 2025-02-24 DOI: 10.1016/j.desal.2025.118741

Huilian Sun, Shuai Wang, Shiqi Wang, Yongchen Song, Zheng Ling, Lunxiang Zhang

{"title":"Rapid processing of dispersed hydrate-based purification for high-yield seawater desalination and wastewater treatment","authors":"Huilian Sun, Shuai Wang, Shiqi Wang, Yongchen Song, Zheng Ling, Lunxiang Zhang","doi":"10.1016/j.desal.2025.118741","DOIUrl":"10.1016/j.desal.2025.118741","url":null,"abstract":"<div><div>Green utilization and sustainable desalination based on hydrate formation have attracted considerable attention. However, its industrial application is limited by slow kinetics and low final-conversion considering hydrate phase change. In this study, we creatively present a desalination approach of dispersed hydrate formation by incorporating the non-ionic surfactant Span 80. The addition of Span 80 enhanced the dispersion of cyclopentane (CP) in saline solution and generated the micron emulsion; as a result, the contact of the host water molecules and the guest molecules increased and the CP hydrate formation accelerated. Meanwhile, a maximum water yield of 92.8 % was achieved and the corresponding growth percentage of 97.5 % was realized comparing without Span 80 in a 3.5 wt% NaCl solution. In addition, this dispersed approach of hydrate-based desalination (HBD) also showed great performance in high concentration wastewater treatments like the solutions of saline and heavy metal. A three-stage purification strategy could produce the clean water meeting the stringent drinking water standard. Additionally, this approach exhibited notable pH tolerance under both strongly acidic and alkaline conditions. The results also demonstrated that Span 80 exhibits impressive self-separation recovery characteristics and cycling stability. These findings provide a robust academic foundation for advancing the feasibility and sustainability of the dispersed HBD in practical seawater desalination applications.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"604 ","pages":"Article 118741"},"PeriodicalIF":8.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480415","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