Improved separation performance, anti-fouling property and durability of polyamide-based RO membrane by constructing a polyvinyl alcohol/polyquaternium-10 surface coating layer

Lü, Zhenhua; Ding, Guoliang; Liu, Meihong; Yu, Shuili; Gao, Congjie

doi:10.1016/j.desal.2023.116755

Cited by 13 publications

(2 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pyridine 2,5-dicarboxylic acid that has been functionalized with polyvinyl alcohol/polyamide composite (PDA/PVA/PA) was synthesized using the wet technique. [38] The PDA/PVA/PA was made by mixing 7 g of polyamide 6 and 7 g of polyvinyl alcohol in 200 mL formic acid (85 %) and then adding 7 g of pyridine 2,5-dicarboxylic acid as a functional group and crosslinker for two polymers and then added 5 % H 2 SO 4 (20 mL) dropwise with stirring (220 rpm) for two hours until the solution became uniform. The final mixture was refluxed at 180 °C for 36 hours to obtain a yellow-brown precipitate.…”

Section: Preparation Of Pyridine 2 5-dicarboxylic Acid/polyvinyl Alco...mentioning

confidence: 99%

Synthesis of Pyridine Dicarboxylic Acid Functionalized and Crosslinked to Polyvinyl Alcohol/polyamide for Thorium Capturing From Aqueous Solution

Hendy,

Kashar,

Allam

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

Thorium harms humans and the environment. Mining can release thorium‐containing waste. This study aims to simplify the production of a novel poly‐adsorbent by mixing pyridine dicarboxylic acid, polyvinyl alcohol, and polyamide and first removing thorium from the solution. Various analytical methods were used to characterize the produced dicarboxylic acid/polyvinyl alcohol/polyamide poly‐adsorbent. The practical conditions on adsorption effectiveness evaluated to pH 3.5, 60 mg poly‐adsorbent, 60 min. Th(IV) uptake for poly‐adsorbent is 107.3 mg/g. The linear and nonlinear uptake for the pseudo‐second‐order is closer to the practical uptake (107.71 mg/g). Hence, the kinetic analysis verified the sorption mechanism. Also, the uptake of linear (107.64 mg/g) and nonlinear (108.63 mg/g) types for the Langmuir isotherm is closer to the practical uptake (107.71 mg/g); thus, the sorption isotherm was suitably utilizing Langmuir modeling. Thermodynamic studies proved that the sorption is spontaneous, exothermic, and random due to the negative ΔG°, negative ΔH°, and positive ΔS° during the thorium adsorption process on poly‐adsorbent. In addition, the regeneration ability of poly‐adsorbent was tested utilizing 1.5 M H2SO4. After six cycles, the poly‐adsorbent showed about 83 % regeneration efficacy. The results confirmed that the dicarboxylic acid/polyvinyl alcohol/polyamide poly‐adsorbent might be effective in removing Th(IV) from the watery solution.

show abstract

Section: Preparation Of Pyridine 2 5-dicarboxylic Acid/polyvinyl Alco...mentioning

confidence: 99%

Synthesis of Pyridine Dicarboxylic Acid Functionalized and Crosslinked to Polyvinyl Alcohol/polyamide for Thorium Capturing From Aqueous Solution

Hendy,

Kashar,

Allam

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…PA has universally been used in membrane technology and has been significant in the development of robust RO membranes. PA is highly crosslinked, thermodynamically stable, and able to stably operate over a wide pH range (2–11) 23 . PA has been reported to have good fatigue resistance and has a high Young's modulus 24 .…”

Section: Introductionmentioning

confidence: 99%

Fabrication ofAg₂S‐incorporated polyamide thin film nanocomposite reverse osmosis membranes with antifouling properties

Nchoe,

Matshetshe,

As' Ballim

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Herein we report on the fabrication of polyamide (PA) thin‐film composites (TFC) as reverse osmosis (RO) membranes with embedded silver sulfide (Ag2S) nanoparticles (NPs) to form thin‐film nanocomposites (TFN) and mitigate fouling. The fabrication of TFN membranes was done via interfacial polymerization on a polysulfone support membrane. Varied amounts of Ag2S NPs (20, 30, and 50 mg) were added to the aqueous phase to form membranes with enhanced antifouling and permselectivity performance. The chemical composition, surface topography, resistance to organic fouling and biofouling, water flux, and salt rejection, were tested on all membranes. The formation of Ag2S was confirmed by XRD and transmission electron microscopy. The pure water flux (Jo) obtained by all TFN membranes was above 25 L/m2h. Moreover, the 30 mg loaded TFN membrane attained the highest Jo of 32.7 L/m2h. Salt rejection of the nanocomposite membranes were observed to be above 98%, which deems them suitable materials for desalination. TFN demonstrated resistance to fouling by bovine serum albumin and was able to retard bacterial colony formation. This was attributed to antibacterial properties of Ag2S NPs. Moreover, surface roughness decreased with increased NP loading, which also reduced the propensity of fouling.

show abstract

Zwitterion Modification in Desalination Membrane for Rejecting Salt and Salt Ions in Brackish Water – A Mini Review

Ratnasari,

Tangahu,

Yuniarto

et al. 2024

Environmental Quality Mgmt

View full text Add to dashboard Cite

Desalination membrane using zwitterion modification provides a significant opportunity to enhance excellent properties for rejecting salt and salt ions. The outstanding properties are designed by positive and negative charges attached to the membrane surface, including water permeability, salt permeability, fouling, and hydrophilicity of the membrane surface. The hydrophilic membrane, which is mentioned as one of the types of desalination membrane, presents the ability to repel salt and salt ions and pass the water. The modification of hydrophilic membranes is also affected by several factors, including water permeability, salt permeability, fouling of membrane surfaces, crossflow velocity, transmembrane pressure, and temperature. Regarding membrane modification, zwitterion has been applied for several ranges, such as the hemodialysis process, live cell imaging, antibacterial surfaces, and wound dressing. However, using a zwitterion modification membrane for desalinating water containing salt content, including brackish water, has yet to be developed. In addition, literature reviews related to polymer membranes for brackish water desalination have never been comprehensively documented. Thus, this review article addresses the zwitterion modification for desalination membranes, which can reject salt and salt ions in brackish water. Furthermore, the mechanism of zwitterion modification for desalination membranes has been presented. Finally, the challenge of zwitterion modification for desalination membranes has been evaluated to inspire insight for future studies.

show abstract

Improved separation performance, anti-fouling property and durability of polyamide-based RO membrane by constructing a polyvinyl alcohol/polyquaternium-10 surface coating layer

Cited by 13 publications

References 56 publications

Synthesis of Pyridine Dicarboxylic Acid Functionalized and Crosslinked to Polyvinyl Alcohol/polyamide for Thorium Capturing From Aqueous Solution

Synthesis of Pyridine Dicarboxylic Acid Functionalized and Crosslinked to Polyvinyl Alcohol/polyamide for Thorium Capturing From Aqueous Solution

Fabrication ofAg₂S‐incorporated polyamide thin film nanocomposite reverse osmosis membranes with antifouling properties

Zwitterion Modification in Desalination Membrane for Rejecting Salt and Salt Ions in Brackish Water – A Mini Review

Contact Info

Product

Resources

About

Improved separation performance, anti-fouling property and durability of polyamide-based RO membrane by constructing a polyvinyl alcohol/polyquaternium-10 surface coating layer

Cited by 13 publications

References 56 publications

Synthesis of Pyridine Dicarboxylic Acid Functionalized and Crosslinked to Polyvinyl Alcohol/polyamide for Thorium Capturing From Aqueous Solution

Synthesis of Pyridine Dicarboxylic Acid Functionalized and Crosslinked to Polyvinyl Alcohol/polyamide for Thorium Capturing From Aqueous Solution

Fabrication ofAg2S‐incorporated polyamide thin film nanocomposite reverse osmosis membranes with antifouling properties

Zwitterion Modification in Desalination Membrane for Rejecting Salt and Salt Ions in Brackish Water – A Mini Review

Contact Info

Product

Resources

About

Fabrication ofAg₂S‐incorporated polyamide thin film nanocomposite reverse osmosis membranes with antifouling properties