Desalination最新文献

Poly(aryl piperidine) anion exchange membrane with self-assembled siloxane crosslinked networks for efficient ion separation in alkaline waste treatment via electrodialysis

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-27 DOI: 10.1016/j.desal.2025.118853

Yazhen Jiang , Tong Mu , Ning Ding , Yangke Pan , Geting Xu , Junbin Liao , Edison Huixiang Ang , Jiangnan Shen

{"title":"Poly(aryl piperidine) anion exchange membrane with self-assembled siloxane crosslinked networks for efficient ion separation in alkaline waste treatment via electrodialysis","authors":"Yazhen Jiang , Tong Mu , Ning Ding , Yangke Pan , Geting Xu , Junbin Liao , Edison Huixiang Ang , Jiangnan Shen","doi":"10.1016/j.desal.2025.118853","DOIUrl":"10.1016/j.desal.2025.118853","url":null,"abstract":"<div><div>In electrodialysis technology applications, anion-exchange membranes (AEMs) have great potential in recovering alkali from industrial wastes and are expected to recover alkali from industrial wastes. In this study, a series of AEMs based on polyarylpiperidines crosslinked with varying ratios of siloxanes were synthesized. Compared to the uncrosslinked PBP AEM and commercial Neosepta AHA, biphenylpiperidine-based AEMs (PBP-CPMTS<sub>40</sub> and PBP-CPMTS<sub>60</sub>) demonstrated superior ion flux, alkali separation performance, and economic efficiency due to their optimized water uptake (WU) and ion exchange capacity (IEC). Notably, PBP-CPMTS<sub>60</sub> AEM exhibited optimal water swelling, low membrane resistance (1.98 Ω·cm<sup>2</sup>), and the highest OH<sup>−</sup> conductivity (14.1 mS·cm<sup>−1</sup>) at room temperature. It also demonstrated excellent alkali stability, retaining 89.71 % of its IEC and 85.07 % of its OH<sup>−</sup> conductivity after 1200 h of exposure to 2 M NaOH at 80 °C. During Cl<sup>−</sup> and OH<sup>−</sup> ion separation via electrodialysis, the dilution compartment concentration decreased from 0.40 M to 0.12 M within 180 min, achieving a high current efficiency of 87.21 % and an energy consumption of 2.32 kW·h·kg<sup>−1</sup>. This study presents a rational siloxane crosslinking strategy to mitigate AEM degradation in alkaline environments, offering significant potential for electrodialysis-based alkali concentration application.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118853"},"PeriodicalIF":8.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738054","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

Dual-functional tight ultrafiltration membrane constructed from aminoquinone networks for sufficient dye/salt selectivity and bacterial inactivation

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-27 DOI: 10.1016/j.desal.2025.118842

Riri Liu , Hanna Vanermen , Jiale Du , Qin Chen , Zijian Yu , Junwei Li , Pengrui Jin , Junfeng Zheng , Alexander Volodin , Wenyuan Ye , Raf Dewil , Ming Xie , Jiuyang Lin , Bart Van der Bruggen

{"title":"Dual-functional tight ultrafiltration membrane constructed from aminoquinone networks for sufficient dye/salt selectivity and bacterial inactivation","authors":"Riri Liu , Hanna Vanermen , Jiale Du , Qin Chen , Zijian Yu , Junwei Li , Pengrui Jin , Junfeng Zheng , Alexander Volodin , Wenyuan Ye , Raf Dewil , Ming Xie , Jiuyang Lin , Bart Van der Bruggen","doi":"10.1016/j.desal.2025.118842","DOIUrl":"10.1016/j.desal.2025.118842","url":null,"abstract":"<div><div>Membranes used for the treatment of highly saline textile wastewater generally suffer from low dye/salt selectivity and biofouling issues. Herein, the facile assembly of vanillic acid/ε-polylysine-based aminoquinone networks (AQN) on a porous PES substrate is proposed for the construction of a dual-functional tight ultrafiltration membrane with high dye/salt separation efficacy and superior antimicrobial functionality. By regulating the assembly duration, the surface structure and properties (i.e., thickness, roughness, hydrophilicity and pore size) of the composite AQN coating can be precisely tailored. Specifically, the optimized AQN-60 tight ultrafiltration composite membrane (MWCO of 3450 Da) experienced >98.50 % dye rejection and <3.56 % NaCl rejection for various dye/salt mixtures. Additionally, the prepared AQN-60 composite membrane demonstrated stable fractionation performance with an eventual dye rejection of 98.70 % and salt rejection of 3.98 % after 24-h filtration of a reactive blue 2/NaCl mixed solution. Furthermore, the integration of ε-polylysine onto the AQN-60 composite membrane markedly enhanced the antimicrobial ability of the tight ultrafiltration membrane, which showed good inhibition efficiency (98.75 %) against <em>E. coli</em> bacteria.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118842"},"PeriodicalIF":8.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725083","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

Synergistic effects of sulfate and fluoride ions on vaterite production: Influence of major seawater ions

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-27 DOI: 10.1016/j.desal.2025.118852

Sehun Kim , Yuvaraj Subramanian , Myoung-Jin Kim

{"title":"Synergistic effects of sulfate and fluoride ions on vaterite production: Influence of major seawater ions","authors":"Sehun Kim , Yuvaraj Subramanian , Myoung-Jin Kim","doi":"10.1016/j.desal.2025.118852","DOIUrl":"10.1016/j.desal.2025.118852","url":null,"abstract":"<div><div>Vaterite, the least stable polymorph of CaCO<sub>3</sub>, is valued in various industries for its large surface area, solubility, and biocompatibility. However, its synthesis often requires costly methods involving additives, high temperatures, or ultrasonic techniques. Recently, we synthesized small vaterite particles using seawater as an indirect carbonation solvent, though the key seawater components influencing vaterite formation remain unclear. In this study, we explore the effects of key seawater components, specifically SO₄<sup>2−</sup> and F<sup>−</sup>, on vaterite formation and particle size during an indirect carbonation process. The simultaneous addition of SO₄<sup>2−</sup> and F<sup>−</sup> demonstrates a synergistic effect, doubling the vaterite content and halving the particle size compared with when these ions are used individually. As a result, the vaterite content exceeds 98 %, with particle sizes below 2.5 μm, which is comparable with those produced using seawater. This synergy is attributed to their ability to influence the lattice structure of CaCO<sub>3</sub>, preventing the recrystallization of vaterite into calcite. Furthermore, F<sup>−</sup> effectively reduces particle size and enhances vaterite porosity, significantly increasing surface area and pore volume. This method, which uses minimal ion concentrations, offers a cost-effective and scalable alternative to traditional vaterite production techniques. This research highlights the potential for producing fine vaterite with enhanced properties, especially for industrial applications, such as drug delivery systems.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118852"},"PeriodicalIF":8.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735318","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

Thermally driven ultrapure water production for water electrolysis – A techno-economic analysis of membrane distillation

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-26 DOI: 10.1016/j.desal.2025.118848

R. Schwantes , Y. Morales , E. Pomp, J. Singer , K. Chavan , F. Saravia

{"title":"Thermally driven ultrapure water production for water electrolysis – A techno-economic analysis of membrane distillation","authors":"R. Schwantes , Y. Morales , E. Pomp, J. Singer , K. Chavan , F. Saravia","doi":"10.1016/j.desal.2025.118848","DOIUrl":"10.1016/j.desal.2025.118848","url":null,"abstract":"<div><div>The transition to hydrogen production with renewable energies necessitates ultrapure water (UPW) as a raw material for water electrolysis, which imposes stringent quality and economic demands on water treatment technologies. This study evaluates the techno-economic feasibility of membrane distillation (MD) as an alternative to reverse osmosis (RO) for UPW production. Utilizing waste heat from a 5 MW proton exchange membrane (PEM) electrolyzer, which would otherwise require active cooling to sustain operation of the electrolyzer, the proposed MD system employs permeate gap membrane distillation to treat feedwaters with brackish and seawater salinities (i.e., 5 g NaCl /kg and 34.3 g NaCl/kg, respectively). The study incorporates numerical simulations to analyse system design parameters and energy consumption of MD and RO systems designed to produce 1 t/h of distillate, as well as experimental data on distillate water quality. Results demonstrate that MD systems achieve high-quality distillate (<3 μS/cm) under the tested salinities and at competitive costs. Estimated unit costs per ton of produced distillate for MD range from €2.33 to €2.85 for either brackish or seawater feed at electricity prices of €0.10–€0.40/kWh, while RO costs range from €2.80 to €5.51 under comparable conditions. The presented annual costs also reflect the cost advantage, especially for seawater desalination with MD costs, approx. 40 % lower than RO. MD shows advantages in energy efficiency with thermal energy provided as low-grade heat. This work shows that MD can be a cost- efficient and versatile solution for UPW production powered by PEM electrolyzer waste heat.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118848"},"PeriodicalIF":8.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747153","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

Boron separation performance by adsorption on bimetallic MIL-100 series materials

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-26 DOI: 10.1016/j.desal.2025.118846

Huiqun Ju , Xue Jiang , Chengyu Huangfu , Jiafei Lyu , Xianghai Guo

引用次数: 0

High-performance antifouling photothermal membranes for enhanced membrane distillation crystallization

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-25 DOI: 10.1016/j.desal.2025.118847

Alula Selomon Embaye , Antonella Piscioneri , Sabrina Morelli , Mariano Davoli , Renata De Rose , Roviel Berhane Zegeye , Sergio Santoro , Efrem Curcio , Loredana De Bartolo

{"title":"High-performance antifouling photothermal membranes for enhanced membrane distillation crystallization","authors":"Alula Selomon Embaye , Antonella Piscioneri , Sabrina Morelli , Mariano Davoli , Renata De Rose , Roviel Berhane Zegeye , Sergio Santoro , Efrem Curcio , Loredana De Bartolo","doi":"10.1016/j.desal.2025.118847","DOIUrl":"10.1016/j.desal.2025.118847","url":null,"abstract":"<div><div>Membrane Distillation-Crystallization (MDCr) technology has the potential to address the simultaneous need for water production and raw materials recovery from aqueous hypersaline solutions. However, MDCr implementation at a large scale is hindered by energy-intensive bulk feed heating and membrane fouling. Here, we developed a photothermal self-heating membrane, prepared by spray-coating a hydrophobic polyvinylidene fluoride (PVDF) membrane with graphene oxide nanoparticles (GO), exhibiting superior sunlight-to-heat conversion efficiency and antifouling properties. Under optimal conditions (PVDF-GO5), a membrane surface temperature of 81.4°C was reached in just 2 min under 1-sun irradiation (1000 W/m<sup>2</sup>), achieving a thermal efficiency of 75%, which represents a 115% increase compared to the unmodified PVDF membrane, which had a thermal efficiency of only 35%. The membrane also exhibited an evaporation flux of 1.10 L m<sup>−2</sup> h<sup>−1</sup>, more than double that of the pristine membrane (0.51 L m<sup>−2</sup> h<sup>−1</sup>). This performance facilitated the extraction of NaCl crystals from seawater and 5 M NaCl brine: cubic crystals with a dispersion of 36% around the mean crystal size were obtained. The fouling stability of photothermal membranes was studied by evaluating the role of membrane surface free energy components in the fouling process. Interestingly, the biofilm formation was reduced up to 60% for <em>E. coli</em> and 90% for <em>S. aureus</em>, with protein fouling also significantly lowered compared to the uncoated membrane. These findings demonstrate the feasibility of GO-based nanomaterials to address both temperature polarization and fouling issues in MDCr operation, bringing it closer to large-scale implementation.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118847"},"PeriodicalIF":8.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715499","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

Surface water reverse osmosis permeate remineralization via minerals recovery from brines: Insights from a long-term industrial pilot study

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-25 DOI: 10.1016/j.desal.2025.118845

Marc Philibert , Alexandre Poli , Assma Alioui , Antonia Filingeri , Emmanuelle Filloux , Andrea Cipollina

{"title":"Surface water reverse osmosis permeate remineralization via minerals recovery from brines: Insights from a long-term industrial pilot study","authors":"Marc Philibert , Alexandre Poli , Assma Alioui , Antonia Filingeri , Emmanuelle Filloux , Andrea Cipollina","doi":"10.1016/j.desal.2025.118845","DOIUrl":"10.1016/j.desal.2025.118845","url":null,"abstract":"<div><div>Application of Assisted-Reverse Electrodialysis (A-RED) technology following low-pressure Reverse Osmosis (LPRO) for permeate remineralization from minerals recovered from the brine was evaluated at the pilot scale. A 3.6 m<sup>3</sup>/h pilot was tested using brine and permeate streams produced from a three-stage LPRO unit applied to treated water from a surface water drinking water treatment plant. The process presented viable results with permeate mineral content increasing from 6 mg/L CaCO<sub>3</sub> up to values of 1060 mg/L CaCO<sub>3</sub> and from 26 μS/cm up to 1906 μS/cm for hardness and conductivity respectively, allowing for a small footprint industrial system applied to a fraction of the permeate flow to reach the final treated water target hardness value of 90 mg/L CaCO<sub>3</sub>. Microcontaminant breakthrough tests of 32 compounds highlighted low levels of micropollutant passage with an overall retention of 92 % while dissolved organic matter (DOM) breakthrough ranged from 12 % to 25 % with a limited impact on bacterial regrowth as measured by Assimilable Organic Carbon (AOC). Scaling up to full-scale plant highlighted a water remineralization cost of 1.56 c€/m<sup>3</sup> and a favorable carbon footprint compared to lime and calcite units. Process performance was maintained stable despite changes in influent water quality and temperature over 2000 h of runtime.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118845"},"PeriodicalIF":8.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715558","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

Study on the separation of nitric acid and acetic acid using multi-stage electrodialysis

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-24 DOI: 10.1016/j.desal.2025.118838

Xiao Ge, Baole Li, Xiang Meng, Tiansheng He, Tianchi Li, Qi Yang, Zheng Wei, Taihong Yan, Zhongwei Yuan

{"title":"Study on the separation of nitric acid and acetic acid using multi-stage electrodialysis","authors":"Xiao Ge, Baole Li, Xiang Meng, Tiansheng He, Tianchi Li, Qi Yang, Zheng Wei, Taihong Yan, Zhongwei Yuan","doi":"10.1016/j.desal.2025.118838","DOIUrl":"10.1016/j.desal.2025.118838","url":null,"abstract":"<div><div>In recent years, acetohydroxamic acid (AHA) has gained significant attention as a novel organic salt-free reagent in the reprocessing of the spent nuclear fuel. However, the primary byproduct of the AHA in the process, acetic acid (HAC), is difficult to destroy during the heating. It tends to evaporate along with nitric acid, which can contaminate the recovered nitric acid and affect its reuse. This study utilizes a multi-stage electrodialysis process to separate nitric acid from acetic acid, exploiting differences in their ionization degrees and ion migration speeds under an external electric field. The effects of current, type of reflux solution, reflux flow rate, and the number of reflux stages on the purity and recovery of nitric acid were examined. Results indicated that under the same reflux condition, increasing the current, raising the reflux flow rate or the concentration of solution could enhance the recovery rate of nitric acid. The purity of nitric acid products could reach 99.88 % at the two-stage reflux using nitric acid as a reflux solution. And a high recovery rate on the nitric acid of 97.48 % also could achieve, which meets the criteria for nitric acid reuse in the reprocessing of the spent nuclear fuel.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118838"},"PeriodicalIF":8.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715562","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

Carbon nanotube-nano-Fe3O4 composite graphene hydrogel with optimized 3D structure for high-performance solar evaporation

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-24 DOI: 10.1016/j.desal.2025.118840

Yueyue Jiang , Yu Gong , Chunwen Guo, Xu Xiang

{"title":"Carbon nanotube-nano-Fe3O4 composite graphene hydrogel with optimized 3D structure for high-performance solar evaporation","authors":"Yueyue Jiang , Yu Gong , Chunwen Guo, Xu Xiang","doi":"10.1016/j.desal.2025.118840","DOIUrl":"10.1016/j.desal.2025.118840","url":null,"abstract":"<div><div>In the face of increasingly scarce freshwater resources, harnessing sustainable solar energy for water evaporation offers an effective pathway to alleviate the water crisis. In this study, we prepared a highly efficient hydrogel solar evaporator (GHCFeP) using graphene oxide (GO), carbon nanotubes (CNTs), nano-Fe<sub>3</sub>O<sub>4</sub>, and polyvinyl alcohol (PVA) as raw materials. The combination of CNTs' excellent molecular thermal vibration effect and nano-Fe<sub>3</sub>O<sub>4</sub>'s superior light absorption and photothermal conversion mechanism endows the composite hydrogel with better photothermal conversion capabilities. Meanwhile, the introduction of PVA enhances the water transport capacity within the hydrogel. Furthermore, this work optimizes the three-dimensional (3D) structure of the hydrogel, reducing the “dead evaporation zone” on the evaporator's surface and enhancing the hydrogel's evaporation rate. Due to GHCFeP's low evaporation enthalpy (1377 kJ/kg), under 1.0 sun illumination, its evaporation rate reaches 2.133 ± 0.166 kg·m<sup>−2</sup>·h<sup>−1</sup> in pure water and 1.778 ± 0.181 kg·m<sup>−2</sup>·h<sup>−1</sup> in simulated seawater. Additionally, by shaping the evaporator into a honeycomb-like structure, the evaporation rate of GHCFeP is further improved. The honeycomb-shaped GHCFeP exhibits an evaporation rate of 2.304 ± 0.042 kg·m<sup>−2</sup>·h<sup>−1</sup> in pure water with a photothermal conversion efficiency of 92.4 %, and an evaporation rate of 2.045 ± 0.050 kg·m<sup>−2</sup>·h<sup>−1</sup> in simulated seawater. In summary, this work not only develops an efficient solar evaporator but also achieves higher photothermal conversion efficiency through optimized 3D structuring, providing new insights and strategies for related research.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118840"},"PeriodicalIF":8.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695948","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

NaOH-assisted heat curing towards highly permeable, superior selective, and antifouling TFC nanofiltration membranes

IF 8.3 1区工程技术

Desalination Pub Date : 2025-03-24 DOI: 10.1016/j.desal.2025.118844

Weiwei Huang , Xiaozhen Lu , Wenzong Zhou , Weiwei Lv , Quan Yuan , Hang Yang , Xinwei Kang , Daoji Wu , Lin Wang , Xuewu Zhu

{"title":"NaOH-assisted heat curing towards highly permeable, superior selective, and antifouling TFC nanofiltration membranes","authors":"Weiwei Huang , Xiaozhen Lu , Wenzong Zhou , Weiwei Lv , Quan Yuan , Hang Yang , Xinwei Kang , Daoji Wu , Lin Wang , Xuewu Zhu","doi":"10.1016/j.desal.2025.118844","DOIUrl":"10.1016/j.desal.2025.118844","url":null,"abstract":"<div><div>Polyamide (PA) nanofiltration (NF) membranes are promising for diverse water treatment applications, particularly due to their high permeability, selectivity, and inherent antifouling properties. These NF membranes are highly sought after delivering high-quality drinking water. The development of high-performance NF membranes through interfacial polymerization (IP) requires careful optimization of heat treatment and post-treatment processes. In this study, we integrated these steps to establish an optimized heat treatment strategy utilizing post-treatment solutions. Systematic investigations revealed that the use of NaOH as a heating reagent etched the PA layer while promoting the hydrolysis of chloride groups, resulting in NF membranes with enhanced negative charge, improved hydrophilicity, and increased pore size. The optimized Post-3 demonstrated exceptional performance, with a permeability of 29.3 LMH/bar while achieving a remarkable 97.3 % removal efficiency for Na<sub>2</sub>SO<sub>4</sub>. The Post-3 exhibited excellent selectivity for both monovalent and multivalent ions, making it ideal for advanced water treatment applications. Furthermore, during natural surface water purification, the Post-3 effectively removed organic compounds while retaining moderate mineral content, ensuring the provision of safe drinking water with optimal mineral composition. The study also highlighted the outstanding fouling resistance and long-term stability of the Post-3, offering valuable insights into the customization of NF membranes for advanced drinking water treatment systems.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"608 ","pages":"Article 118844"},"PeriodicalIF":8.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715561","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