Journal of Membrane Science, Год журнала: 2019, Номер 584, С. 300 - 308
Опубликована: Май 8, 2019
Язык: Английский
ACS Applied Polymer Materials, Год журнала: 2021, Номер 3(9), С. 4347 - 4374
Опубликована: Авг. 26, 2021
The global society is in a transition, where dealing with climate change and water scarcity are important challenges. More efficient separations of chemical species essential to reduce energy consumption provide more reliable access clean water. Here, membranes advanced functionalities that go beyond standard separation properties can play key role. This includes relevant functionalities, such as stimuli-responsiveness, fouling control, stability, specific selectivity, sustainability, antimicrobial activity. Polyelectrolytes their complexes an especially promising system membrane functionalities. we have reviewed recent work stem directly from the material provided by polyelectrolytes. highlights versatility polyelectrolyte-based modifications, polyelectrolytes not only applied single layers, including brushes, but also complex polyelectrolyte multilayers on both porous supports dense membranes. Moreover, free-standing be produced completely aqueous solutions allowing much sustainable approaches fabrication. Review demonstrates promise hold for next-generation properties, while it provides clear outlook future this field.
Язык: Английский
Процитировано
96
Journal of Membrane Science, Год журнала: 2020, Номер 615, С. 118532 - 118532
Опубликована: Авг. 1, 2020
Long-term pH stability is critical for nanofiltration membranes in many applications, e.g. dairy and mining industry. We present a systematic study on the long-term of four different polyelectrolyte multilayer (PEM) membranes. The was assessed by comparing their performance before after exposure to up 1 M HNO3 (~pH 0) NaOH 14), terms pure water permeance (PWP), salt retention, molecular weight cut-off (MWCO). Poly(diallyldimethylammonium chloride) (PDADMAC)/poly(styrenesulfonate) (PSS) show excellent under extreme acidic basic conditions more than 2 months (10.7 L m−2h−1bar−1 PWP, 95.5% MgSO4 279 g mol−1 MWCO), attributed use strong polyelectrolytes, which charge unaffected pH. Poly(allylamine hydrochloride) (PAH)/PSS stable when exposed (9.7 97.5% 249 MWCO). Under these conditions, PAH remains charged therefore maintained. PDADMAC/poly(acrylic acid) (PAA) PAH/PAA are not at conditions. These results highlight that PEM membranes, especially PDADMAC/PSS have tremendous potential Compared most commercially available they superior very relevant performance.
Язык: Английский
Процитировано
91
Journal of Membrane Science, Год журнала: 2018, Номер 570-571, С. 513 - 521
Опубликована: Окт. 27, 2018
Язык: Английский
Процитировано
90
Applied Materials Today, Год журнала: 2019, Номер 18, С. 100471 - 100471
Опубликована: Сен. 29, 2019
New membrane materials are urgently needed to address the increasing concentrations of harmful organic micropollutants (e.g. pharmaceuticals, pesticides and plasticizers) in our surface drinking water. Currently, densest available membranes can remove sufficiently, but only at very low permeabilities by producing a highly saline, difficult treat waste stream. We improve permeability 5–10 fold an asymmetric polyelectrolyte multilayer (PEM) on porous membrane, with separation layer thickness 4 nm. This is achieved first coating open prevent defects, subsequently thin dense multilayer. novel shows high (98%) retention toward mix common micropollutants. Moreover, it retains 10–15% NaCl, preventing formation saline A detailed literature study that PEM this unique combination properties, significantly outperforms commercial for micropollutant removal applications.
Язык: Английский
Процитировано
84
Journal of Membrane Science, Год журнала: 2020, Номер 615, С. 118514 - 118514
Опубликована: Авг. 9, 2020
Язык: Английский
Процитировано
82
Journal of Materials Chemistry A, Год журнала: 2020, Номер 8(40), С. 20870 - 20896
Опубликована: Янв. 1, 2020
Polyelectrolytes self-assembly is developing rapidly as a fascinating family of functional membrane fabrication strategies with the ability to modulate architectures and physical–chemical characteristics membranes at molecular level.
Язык: Английский
Процитировано
73
Materials, Год журнала: 2021, Номер 14(15), С. 4152 - 4152
Опубликована: Июль 26, 2021
Polyelectrolyte multilayers are versatile materials that used in a large number of domains, including biomedical and environmental applications. The fabrication polyelectrolyte using the layer-by-layer technique is one simplest methods to obtain composite functional materials. properties final material can be easily tuned by changing deposition conditions building blocks. This review presents main characteristics multilayers, currently used, factors influencing assembly polyelectrolytes. last section this paper some most important applications with special focus on
Язык: Английский
Процитировано
60
Journal of Membrane Science, Год журнала: 2022, Номер 669, С. 121234 - 121234
Опубликована: Дек. 10, 2022
This review provides a comprehensive overview on the quickly developing field of polymeric hollow fiber (HF) nanofiltration (NF), including membrane (module) and process design, operational parameters, full-scale applications. Six different methods are currently used to produce HF NF membranes: phase inversion, interfacial polymerization, grafting, coating, polyelectrolyte multilayers (PEM) chemistry in spinneret. While all have their strengths weaknesses, several PEM based membranes stand out because high chemical stability. combination geometry stability can make sustainable alternative spiral wound NF. is especially case for applications with fouling load where, contrast NF, typically does not require an intensive pre-treatment. In academic settings, experiments done small modules single-component feeds. Several studies showed that it important, but always straightforward, correlate these lab scale results full performance. Indeed, design parameters such as crossflow velocity staging partly determine energy consumption retention need be taken into account. Partly insights developments, last five years commercial rapidly become available. At least 59 pilot-scale 26 plants operation or under construction, mostly focusing water treatment. A comparison between shows applied broad range excellent scalability, highlighting growth potential coming years.
Язык: Английский
Процитировано
44
Desalination, Год журнала: 2023, Номер 555, С. 116520 - 116520
Опубликована: Март 6, 2023
Layer-by-layer (LBL) assembly is an essential method for the preparation of nanofiltration (NF) membranes, offering tunable charge and pore size, high water permeability, good anti-fouling properties, making them highly suitable resource recovery, seawater desalination, other fields. Despite their advantages, LBL NF membranes suffer from salinity instability, limiting use in saline streams. This perspective review provides a summary fundamental physical chemical principles related to stability membranes. We critically analyze driving force assembly, binding strength polyelectrolyte (PE) pairs, overcompensation also discuss factors affecting level with respect two different time scales. Furthermore, we examine relationship between considering (osmotic pressure) (Le Chatelier's principle) aspects. Our analysis demonstrates that solutions can be improved by selecting PEs stronger strength, increasing level, crosslinking. These methods not only enhance but offer greater potential future application
Язык: Английский
Процитировано
42
Desalination, Год журнала: 2023, Номер 556, С. 116593 - 116593
Опубликована: Март 29, 2023
Язык: Английский
Процитировано
32