Tailoring the Polyamide Active Layer of Thin-Film Composite Forward Osmosis Membranes with Combined Cosolvents during Interfacial Polymerization

2020 ◽  
Vol 59 (17) ◽  
pp. 8230-8242 ◽  
Author(s):  
Yu Li ◽  
Guoyuan Pan ◽  
Jing Wang ◽  
Yang Zhang ◽  
Hongwei Shi ◽  
...  
Keyword(s):  
Thin Film ◽  
Active Layer ◽  
Interfacial Polymerization ◽  
Forward Osmosis ◽  
Film Composite ◽  
Thin Film Composite

Synthesis and characterization of a polyamide thin film composite membrane based on a polydopamine coated support layer for forward osmosis

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 106113-106121 ◽  
Author(s):  
Yangbo Huang ◽  
Haiyang Jin ◽  
Hao Li ◽  
Ping Yu ◽  
Yunbai Luo
Keyword(s):  
Thin Film ◽  
Composite Membrane ◽  
High Performance ◽  
Interfacial Polymerization ◽  
Forward Osmosis ◽  
Synthesis And Characterization ◽  
Film Composite ◽  
Thin Film Composite Membrane ◽  
Thin Film Composite

In this study, a facile method has been developed to prepare high performance thin film composite forward osmosis membranes, which was conducted by coating the surface of a polysulfone substrate with polydopamine prior to the interfacial polymerization.

scholarly journals Comparison of performance and biofouling resistance of thin-film composite forward osmosis membranes with substrate/active layer modified by graphene oxide

RSC Advances ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 6502-6509 ◽  
Author(s):  
Yuan Li ◽  
Yu Yang ◽  
Chen Li ◽  
Li-an Hou
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Active Layer ◽  
Water Flux ◽  
Forward Osmosis ◽  
Film Composite ◽  
Thin Film Composite

The substrate modified by GO could greatly improve water flux, whereas the GO-functionalized active layer is favorable for biofouling mitigation.

scholarly journals Alleviation of Reverse Salt Leakage across Nanofiber Supported Thin-Film Composite Forward Osmosis Membrane via Heat-Curing in Hot Water

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 237
Author(s):  
Xiao-Xue Ke ◽  
Ting-Yu Wang ◽  
Xiao-Qiong Wu ◽  
Jiang-Ping Chen ◽  
Quan-Bao Zhao ◽  
...  
Keyword(s):  
Thin Film ◽  
Interfacial Polymerization ◽  
Forward Osmosis ◽  
Phase Interface ◽  
Hot Water ◽  
Fine Tuning ◽  
Salt Flux ◽  
Film Composite ◽  
Thin Film Composite ◽  
Heat Curing

Electrospun nanofiber with interconnected porous structure has been studied as a promising support layer of polyamide (PA) thin-film composite (TFC) forward osmosis (FO) membrane. However, its rough surface with irregular pores is prone to the formation of a defective PA active layer after interfacial polymerization, which shows high reverse salt leakage in FO desalination. Heat-curing is beneficial for crosslinking and stabilization of the PA layer. In this work, a nanofiber-supported PA TFC membrane was conceived to be cured on a hot water surface with preserved phase interface for potential “defect repair”, which could be realized by supplementary interfacial polymerization of residual monomers during heat-curing. The resultant hot-water-curing FO membrane with a more uniform superhydrophilic and highly crosslinked PA layer exhibited much lower reverse salt flux (FO: 0.3 gMH, PRO: 0.8 gMH) than that of oven-curing FO membrane (FO: 2.3 gMH, PRO: 2.2 gMH) and achieved ∼4 times higher separation efficiency. It showed superior stability owing to mitigated reverse salt leakage and osmotic pressure loss, with its water flux decline lower than a quarter that of the oven-curing membrane. This study could provide new insight into the fine-tuning of nanofiber-supported TFC FO membrane for high-quality desalination via a proper selection of heat-curing methods.

Influence of Active Layer and Support Layer Surface Structures on Organic Fouling Propensity of Thin-Film Composite Forward Osmosis Membranes

2015 ◽  
Vol 49 (3) ◽  
pp. 1436-1444 ◽  
Author(s):  
Xinglin Lu ◽  
Laura H. Arias Chavez ◽  
Santiago Romero-Vargas Castrillón ◽  
Jun Ma ◽  
Menachem Elimelech
Keyword(s):  
Thin Film ◽  
Active Layer ◽  
Forward Osmosis ◽  
Surface Structures ◽  
Layer Surface ◽  
Film Composite ◽  
Thin Film Composite ◽  
Organic Fouling

scholarly journals A review: the effect of the microporous support during interfacial polymerization on the morphology and performances of a thin film composite membrane for liquid purification

RSC Advances ◽  
2019 ◽  
Vol 9 (61) ◽  
pp. 35417-35428 ◽  
Author(s):  
Feng Liu ◽  
LanLan Wang ◽  
Dawei Li ◽  
Qingsheng Liu ◽  
Bingyao Deng
Keyword(s):  
Thin Film ◽  
Reverse Osmosis ◽  
Composite Membrane ◽  
Brackish Water ◽  
Interfacial Polymerization ◽  
Forward Osmosis ◽  
Film Composite ◽  
Thin Film Composite Membrane ◽  
Thin Film Composite ◽  
Porous Supports

The thin film composite membrane prepared by interfacial polymerization on porous supports is currently one of the most efficient technologies for brackish water purification and seawater desalination, including reverse osmosis, forward osmosis and nanofiltration.

Interfacial polymerization of thin-film composite forward osmosis membranes using ionic liquids as organic reagent phase

2020 ◽  
Vol 601 ◽  
pp. 117869 ◽  
Author(s):  
Yusak Hartanto ◽  
Maxime Corvilain ◽  
Hanne Mariën ◽  
Julie Janssen ◽  
Ivo F.J. Vankelecom
Keyword(s):  
Thin Film ◽  
Ionic Liquids ◽  
Interfacial Polymerization ◽  
Forward Osmosis ◽  
Organic Reagent ◽  
Film Composite ◽  
Thin Film Composite
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