Separation and Purification Technology, Год журнала: 2024, Номер 357, С. 130105 - 130105
Опубликована: Окт. 16, 2024
Язык: Английский
Desalination, Год журнала: 2025, Номер unknown, С. 118913 - 118913
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162917 - 162917
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Water Research, Год журнала: 2025, Номер 282, С. 123762 - 123762
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0
Journal of Applied Polymer Science, Год журнала: 2025, Номер unknown
Опубликована: Май 21, 2025
ABSTRACT This study developed a novel thin‐film nanocomposite (TFN) membrane using vacuum‐assisted deposition and surface chemical crosslinking by integrating MXene nanosheets with tannic acid (TA) polyethyleneimine (PEI) crosslinked network onto PVDF substrate. A series of tests were conducted to characterize the structure morphology membranes, as well measure concentrations dye wastewater saline solutions before after filtration. The results showed that introduction phenol‐amine altered properties layers, reducing water contact angle 49.8° resulting in negative zeta potential pH range 4–10. optimized TFN‐2 achieved 100% removal cationic dyes (methylene blue, malachite green, crystal violet), rejection rates 98.52%, 97.12%, for methylene Congo red, Coomassie brilliant blue G, respectively, also exhibited certain salt ion capability. Moreover, significantly enhanced oxidative stability MXene. maintained stable flux efficiency during 12 h continuous operation retained excellent separation performance 90 days storage. provides new approach developing high‐performance membranes.
Язык: Английский
Процитировано
0
Environmental Science & Technology, Год журнала: 2025, Номер unknown
Опубликована: Июнь 4, 2025
Water scarcity is a growing global challenge. Developing energy-efficient and sustainable desalination methods crucial to addressing the water crisis. In recent years, hydrogel-based has emerged as promising approach due excellent absorption capacity stimuli-responsive properties of hydrogels. However, conventional dewatering for recovering from hydrogels often suffer low efficiency poor stability. To address these challenges, novel using ammonia gas dewater poly(acrylic acid-co-acrylamide) was investigated, achieving significantly higher rates (up 110 gH2O/ghydrogel/h), among highest reported, with production ranging 600 1140 LH2O/kghydrogel/day an average salt rejection around 60% both synthetic real seawater water. The process also demonstrated stability, maintaining consistent performance over 100 cycles. This technology shows great potential desalinating brackish agricultural irrigation or integration reverse osmosis systems desalination, reducing energy consumption capital costs. innovative method could enable practical applications desalination.
Язык: Английский
Процитировано
0
Environmental Science & Technology, Год журнала: 2023, Номер 57(48), С. 20380 - 20391
Опубликована: Ноя. 15, 2023
Molecular separations involving solvents and organic impurities represent great challenges for environmental water-intensive industries. Novel materials with intrinsic nanoscale pores offer a choice improvement in terms of energy efficiency capital costs. Particularly, applications where gradient ordered separation contaminants remain elusive, smart switchable can efficient solutions. Here, we report hierarchically networked porous cage membrane dynamic control over pores, elucidating stable solvent permeance tunable dye rejection different molecular weights. The engineered spontaneously modulate its geometry pore size from water to methanol DMF reversible manner. exhibits ≥585.59 g mol–1 weight cutoff preferentially is impeded by (799.8 mol–1) (≈1017 mol–1), reflecting 36 73% change due self-regulation the flexible network, respectively. Grazing incidence X-ray diffraction illustrates clear peak downshift, suggesting an structural when membranes were immersed or DMF. We have observed changes that also be tuned preparing methanol/DMF mixture adjusting their ratio, thereby enabling filtration. anticipate such selectivity could promising particularly industrial wastewater treatment.
Язык: Английский
Процитировано
6
Journal of Membrane Science, Год журнала: 2024, Номер 709, С. 123152 - 123152
Опубликована: Июль 29, 2024
Язык: Английский
Процитировано
2
ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(21), С. 13102 - 13109
Опубликована: Окт. 17, 2024
We have successfully developed a PVDF/EAA [poly(vinylidene fluoride)/poly(ethylene acrylic acid)]-piperazine (PIP) composite nanofiltration membrane for dye isolation. In this paper, we conduct interfacial polymerization (IP) on membranes to generate separation layer that aims at enhancement of the permeation flux membranes. Subsequently, Fourier transform infrared spectroscopy (FTIR), contact angle, X-ray photoelectron (XPS), and scanning electron microscopy (SEM) were used characterize performance prepared samples. addition, under different concentrations PIP aqueous layer, an intensive study was resorted gauge effects homotrimethylene tricarbonyl chloride (TMC) concentration reaction time characteristics Under optimized situation, pure water could reach 76.84 L/(m2 h) retention bovine serum albumin (BSA), Congo red, methylene blue 96.34%, 97.93%, 96.83%, respectively. Substantially, has good potential be applied in wastewater treatment.
Язык: Английский
Процитировано
2
Small, Год журнала: 2024, Номер unknown
Опубликована: Окт. 23, 2024
Abstract Zwitterionic membranes demonstrate excellent antifouling property in water purification. The covalent organic frameworks (COFs), due to the ordered channels and abundant functional groups, have distinct superiority constructing zwitterionic surfaces.Here, COF membrane is prepared with precise framework structures uniform charge distribution. negatively charged 4,4′‐diaminobiphenyl‐2,2′‐sisulphonic acid sodium (SA) positively ethidium bromide (EB) fragments are used react 1,3,5‐triformylphloroglucinol (TP) at gas‐liquid interface prepare membrane. complementary inter‐layer inner‐layer facilitate formation of continuous tight hydration layer on surface pore walls resist adsorption pollutants. effectively resists both bovine serum albumin lysozyme pollutants flux recovery ratio (FRR) 97% 85%, respectively. Furthermore, regular nano‐channels balanced interactions between surface/pore result outstanding permeability up 146 L m −2 h −1 bar dye/salt separation selectivity. permeation mechanism elucidated by experimental molecular dynamics calculation. can find promising applications preparing high‐performance membranes.
Язык: Английский
Процитировано
2
Desalination, Год журнала: 2024, Номер unknown, С. 118243 - 118243
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
2