Engineering a novel zwitterionic polyurethane nanofiltration membrane with enhanced fouling resistance for water reclamation

Song, Fei; Tu, Chunlai; Meng, Fangang; Wang, Liang; Xia, Lichao; Zhao, Shanshan

doi:10.1016/j.desal.2023.116440

Cited by 13 publications

(7 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar phenomena have also been reported in other zwitterionic polymer modified membrane cases. For example, the sulfobetaine zwitterionic polymer modified membranes were also negative at neutral pH. , In addition, the negative surface charge agrees well with our results that the Na 2 SO 4 rejection of the AQN-PA-5-2L membrane was over 60% due to Donnan exclusion effects.…”

Section: Resultssupporting

confidence: 89%

“…For example, the sulfobetaine zwitterionic polymer modified membranes were also negative at neutral pH. 38,59 In addition, the negative surface charge agrees well with our results that the Na 2 SO 4 rejection of the AQN-PA-5-2L membrane was over 60% due to Donnan exclusion effects. Overall, considering PWP, MWCOs, and salt rejection, the AQN-PhA-5-2L NF membrane would be selected for antifouling performance evaluation.…”

Section: Membrane Surface Hydrophilicitysupporting

confidence: 86%

“…The details about the membrane fouling test have been reported elsewhere in the literature. , The filtration procedures included four steps: compaction, conditioning, fouling, and cleaning, as stated in our previous study . Briefly, the membrane was compacted using ultrapure water at 12 bar until the flux reached a steady sate.…”

Section: Experimental/methodsmentioning

confidence: 99%

“…23,37 The filtration procedures included four steps: compaction, conditioning, fouling, and cleaning, as stated in our previous study. 38 Briefly, the membrane was compacted using ultrapure water at 12 bar until the flux reached a steady sate. Then, the membrane was conditioned by filtering NaCl solution with same ionic strength as the SW for 2 h, and the initial foulant-free baseline flux was adjusted and recorded as J 0 .…”

Section: Uv−vis Spectra Of Hnq/pei Mixturesmentioning

confidence: 99%

“…The water flux, salt rejection, and pore size determination were performed on a bench-scale cross-flow system used in previous study. 38 The effective filtration area is 40 cm 2 . Briefly, water flux was measured by filtering ultrapure water.…”

Section: Uv−vis Spectra Of Hnq/pei Mixturesmentioning

confidence: 99%

See 4 more Smart Citations

Engineering Antifouling Nanofiltration Membranes Using Amino-Quinone Networks–Phytic Acid Pseudo Zwitterionic Clusters for Water Treatment

et al. 2023

Self Cite

View full text Add to dashboard Cite

Nanofiltration (NF) shows great potential for water treatment and recycling. Nevertheless, severe membrane fouling significantly decreased lifetime and performance of NF membranes, impeding NF applications for clean water production. Herein, novel antifouling NF membranes with a pseudo zwitterionic separation layer were designed using layer-by-layer (LBL) assembly of amino-quinone networks (AQNs) and hydrophilic phytic acid (PhA) (AQN-PhA). The AQNs were formed by 5-hydroxy-1,4-naphthoquinone (HNQ) and polyethylenimine (PEI) via Michael addition and Schiff base reaction. The modification conditions of the AQN-PhA system were systematically investigated for an optimum membrane performance. The optimized conditions were found to be a PEI molecular weight of 600 Da, HNQ/PEI ratio at 1:2, an AQN coating time of 10 min, and pH of PhA at 5. The optimized membrane (i.e., AQN-PhA-5-2L) showed improved hydrophilicity along with a pure water permeability of 9.0 L•m −2 •h −1 •bar −1 and a molecular weight cut-off of 766 Da. It exhibited excellent fouling resistance with approximately 94% flux recovery ratio against a synthetic wastewater during a long-term filtration, which was superior in comparison with a benchmark commercial polyamide NF membrane. This study provides an idea for simple, feasible, and scalable zwitterionic modification in the future design of antifouling NF membranes.

show abstract

Section: Resultssupporting

confidence: 89%

Section: Membrane Surface Hydrophilicitysupporting

confidence: 86%

Section: Experimental/methodsmentioning

confidence: 99%

Section: Uv−vis Spectra Of Hnq/pei Mixturesmentioning

confidence: 99%

Section: Uv−vis Spectra Of Hnq/pei Mixturesmentioning

confidence: 99%

See 3 more Smart Citations

Engineering Antifouling Nanofiltration Membranes Using Amino-Quinone Networks–Phytic Acid Pseudo Zwitterionic Clusters for Water Treatment

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

Functional Zwitterionic Polyurethanes: State‐of‐the‐Art Review

Zhang,

Lv,

Zhao

et al. 2023

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Recent advancements in bioengineering and medical devices have been greatly influenced and dominated by synthetic polymers, particularly polyurethanes (PUs). PUs offer customizable mechanical properties and long‐term stability, but their inherent hydrophobic nature poses challenges in practically biological application processes, such as interface high friction, strong protein adsorption, and thrombosis. To address these issues, surface modifications of PUs for generating functionally hydrophilic layers have received widespread attention, but the durability of generated surface functionality is poor due to irreversible mechanical wear or biodegradation. As a result, numerous researchers have investigated bulk modification techniques to incorporate zwitterionic polymers or groups onto the main or side chains of PUs, thereby improving their hydrophilicity and biocompatibility. This comprehensive review presents an extensive overview of notable zwitterionic PUs (ZPUs), including those based on phosphorylcholine, sulfobetaine, and carboxybetaine. The review explores their wide range of biomedical applications, from blood‐contacting devices to antibacterial coatings, fouling‐resistant marine coatings, separation membranes, lubricated surfaces, and shape memory and self‐healing materials. Lastly, the review summarizes the challenges and future prospects of ZPUs in biological applications.

show abstract

Photoelectrocatalytic modification of nanofiltration membranes with SrF2/Ti3C2T to simultaneously enhance heavy metal ions rejection and permeability

Zheng,

Meng,

et al. 2023

Chemosphere

View full text Add to dashboard Cite

Engineering a novel zwitterionic polyurethane nanofiltration membrane with enhanced fouling resistance for water reclamation

Cited by 13 publications

References 44 publications

Engineering Antifouling Nanofiltration Membranes Using Amino-Quinone Networks–Phytic Acid Pseudo Zwitterionic Clusters for Water Treatment

Engineering Antifouling Nanofiltration Membranes Using Amino-Quinone Networks–Phytic Acid Pseudo Zwitterionic Clusters for Water Treatment

Functional Zwitterionic Polyurethanes: State‐of‐the‐Art Review

Photoelectrocatalytic modification of nanofiltration membranes with SrF2/Ti3C2T to simultaneously enhance heavy metal ions rejection and permeability

Contact Info

Product

Resources

About