Improvement in anti‐biofouling property of polyamide thin‐film composite membranes by using copper nanoparticles

Ngo, Thu Hong Anh; Nguyen, Tung T.; Nguyen, Vuong Duy; Tran, Dung Thi

doi:10.1002/app.52739

Cited by 5 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These findings converged with those reported in our previous paper. 26,27 Moreover, it could be seen the peak of AgNPs at 1450 cm À1 of AgNP-modified membranes. This result is in agreement with the results of Jing An et al 28 Overall, our findings disclosed that AgNPs were successfully grafted onto the TFC-PA membrane surface.…”

Section: Atr-ftir Spectroscopymentioning

confidence: 96%

Characterization of polyamide thin film composite membranes incorporated silver nanoparticles

Ngo

Pham

Nguyen

et al. 2022

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

In this study, the polyamide thin film composite membrane surface has been modified by anti-microbial silver nanoparticles (AgNPs). The membrane surfaces were interwoven with AgNPs by ultraviolet grafting polymerization method using AgNPs with or without poly(ethylene glycol) (PEG). The membrane surface characteristics were determined by scanning electron microscopy-energy dispersive x-ray spectrometry images, attenuated total reflection-Fourier transforms infrared spectroscopy, water contact angle values, and anti-bacterial property. The separation performance was determined based on the flux and the ability to remove calcium ions in water. The anti-biofouling property was appraised through the maintained flux ratios and the irreversible fouling factors of unmodified and modified membranes during 10 h-filtration of protein bovine serum albumin (BSA) in an aqueous solution, in which, before filtration of BSA, all membranes were immersed in E. coli bacteria solution for 4 days. The results of the experiments corroborated the hydrophilicity and more anti-microbial property of the membrane surfaces after being incorporated into AgNPs. The water contact angle decreased from around 49 for the unmodified membrane to 36 and 23 for the AgNPmodified membranes without/with PEG, while no colonies appeared in the medium containing the AgNP-modified membranes. The separation property of modified membranes was improved, with both membrane flux and antifouling properties, along with the substantial surge of the anti-biofouling property. After 10 h of BSA filtration, the fluxes of the modified membranes were maintained at 68% and 78% for AgNP-modified membranes without and with PEG, respectively. Conversely, this value was only 46% for the unmodified one.

show abstract

Section: Atr-ftir Spectroscopymentioning

confidence: 96%

Characterization of polyamide thin film composite membranes incorporated silver nanoparticles

Ngo

Pham

Nguyen

et al. 2022

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…[12,17,18] On the other hand, CuNPs are a promising candidate for membrane modification because they can release prolonged Cu + , and Cu 2 + ions with antibacterial properties. [19][20][21] The presence of nanoparticles minimizes the adhesion of the foulants and prevents the formation of a biofilm layer on the membrane surface and thus, reducing membrane fouling, especially the membrane biofouling phenomenon.…”

Section: Introductionmentioning

confidence: 99%

“…[25] Although the antibacterial and antifouling properties of the modified RO membranes were enhanced in the abovementioned studies, the permeability of the modified RO membranes was reduced which lowers the potential of the practical applications of these studies, unfortunately. [12,17,[18][19][20][21][22][23][24][25] This study is aimed at finding suitable Ag and Cu coating conditions that enhance the antibacterial and antifouling properties yet maintaining the permeability. We reckon that it can be achieved by appropriately reducing the concentration of Ag and Cu during the coating process.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and Antifouling Properties of Ag‐ and Cu‐Decorated Thin Film Composite Polyamide Reverse Osmosis Membranes

et al. 2023

View full text Add to dashboard Cite

In this work, silver and copper particles of different nanoparticle precursor concentrations were decorated on the surface of thin film composite polyamide (TFC‐PA) reverse osmosis (RO) membranes by in situ method. The modified membranes were characterized by different techniques including Field emission scanning electron microscopy (FE‐SEM), X‐ray Absorption Spectroscopy (XAS), and attenuated total reflection – Fourier transforms infrared spectroscopy (ATR‐FTIR), water contact angle (WCA), and antibacterial capacity. After that, the membrane performance was compared through normalized flux and the possibility of the removal of bovine serum albumin (BSA) protein; the anti‐fouling and anti‐biofouling properties were also compared through the maintained flux ratios (%) after 5‐hour filtration. The used organic foulants were BSA protein and humic acid (HA) solutions. The results showed that, compared to the flux of the base, the flux of AgNPs‐decorated membrane can improve the separation ability up to 24% while that of CuNPs‐decorated membrane was 14%. The anti‐fouling property of decorated membranes was significantly increased compared to that of the base (from 64% for the base to over 77% for decorated membranes). Especially, the anti‐biofouling property of nanoparticles decorated membranes was also increased because of the higher maintained flux ratios (from 50% for the base to over 75% for decorated membranes). It indicates that this method can be applied to produce reverse osmosis (RO) membranes for reclamation wastewater with a high content of organic matter.

show abstract

Mitigating biofouling of polyamide thin-film composite RO membrane modified with AgNPs and pSBMA: an evaluation close to the actual SWRO desalination application scenario

Li,

Song,

Liu

et al. 2024

AQUA — Water Infrastructure, Ecosystems and Society

View full text Add to dashboard Cite

The long-term sustainability of beneficial effects resulting from the modification of polyamide thin-film composite (PATFC) membranes with zwitterionic poly(sulfobetaine methacrylate) (pSBMA) and silver nanoparticles (AgNPs) in real-world application scenarios remains uncertain. This study used response surface methodology and innovative anti-biofouling evaluation method to optimize the conditions for AgNP- and pSBMA-co-modified PATFC membranes, with reverse osmosis seawater desalination as the test application scenario. A 180-day continuous seawater treatment test was conducted to evaluate the long-term sustainability of anti-biofouling resistance. Results indicated that loading AgNPs before grafting pSBMA enhanced their stability during use and cleaning. Co-modification under optimal conditions led to a 6.3% improvement in membrane flux reduction over long-term operation. The effect of AgNPs was significant for 30 days, while pSBMA remained effective until the end of the test. Water contact angle measurements, confocal laser scanning microscopy, and quorum sensing signal molecule analysis revealed anti-bioflouling improvements due to the hydration layer and electrostatic barrier from pSBMA, as well as quorum sensing inhibition and disinfection from AgNPs. These findings confirm the discount effectiveness and feasibility of the pSBMA and AgNPs co-modification technique during long working time, offering valuable insights into modification operations and anti-biofouling mechanisms.

show abstract

Improvement in anti‐biofouling property of polyamide thin‐film composite membranes by using copper nanoparticles

Cited by 5 publications

References 30 publications

Characterization of polyamide thin film composite membranes incorporated silver nanoparticles

Characterization of polyamide thin film composite membranes incorporated silver nanoparticles

Antibacterial and Antifouling Properties of Ag‐ and Cu‐Decorated Thin Film Composite Polyamide Reverse Osmosis Membranes

Mitigating biofouling of polyamide thin-film composite RO membrane modified with AgNPs and pSBMA: an evaluation close to the actual SWRO desalination application scenario

Contact Info

Product

Resources

About