scholarly journals Thin Film Composite Membrane for Oily Waste Water Treatment: Recent Advances and Challenges

Membranes ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 86 ◽  
Author(s):  
Nor Ahmad ◽  
Pei Goh ◽  
Zulhairun Abdul Karim ◽  
Ahmad Ismail
Keyword(s):  
Thin Film ◽  
Wastewater Treatment ◽  
Waste Water Treatment ◽  
Separation Performance ◽  
Oily Wastewater ◽  
Film Composite ◽  
Thin Film Composite ◽  
Recent Advances ◽  
Tfc Membrane ◽  
Oily Wastewater Treatment

Oily wastewater discharge from various industry processes and activities have caused dramatic impacts on the human and environment. Treatment of oily wastewater using membrane technology has gained worldwide attention due to its efficiency in removing the amount and concentration of oil and grease as well as other specific pollutants in order to be reused or to fulfill stringent discharge standard. The application of thin film composite (TFC) membrane in reverse osmosis (RO) and forward osmosis (FO) for oily wastewater treatment is an emerging and exciting alternative in this field. This review presents the recent and distinctive development of TFC membranes to address the issues related to oily wastewater treatment. The recent advances in terms of TFC membrane design and separation performance evaluation are reviewed. This article aims to provide useful information and strategies, in both scientific knowledge advancement and practical implementation point of view, for the application TFC membrane for oily wastewater treatment.

scholarly journals Antifouling Property of Oppositely Charged Titania Nanosheet Assembled on Thin Film Composite Reverse Osmosis Membrane for Highly Concentrated Oily Saline Water Treatment

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 237
Author(s):  
Nor Akalili Ahmad ◽  
Pei Sean Goh ◽  
Abdul Karim Zulhairun ◽  
Ahmad Fauzi Ismail
Keyword(s):  
Thin Film ◽  
Wastewater Treatment ◽  
Reverse Osmosis ◽  
Saline Water ◽  
High Concentration ◽  
Saline Wastewater ◽  
Film Composite ◽  
Thin Film Composite ◽  
Tfc Membrane ◽  
Ro Membrane

With the blooming of oil and gas industries, oily saline wastewater treatment becomes a viable option to resolve the oily water disposal issue and to provide a source of water for beneficial use. Reverse osmosis (RO) has been touted as a promising technology for oily saline wastewater treatment. However, one great challenge of RO membrane is fouling phenomena, which is caused by the presence of hydrocarbon contents in the oily saline wastewater. This study focuses on the fabrication of antifouling RO membrane for accomplishing simultaneous separation of salt and oil. Thin film nanocomposite (TFN) RO membrane was formed by the layer by layer (LbL) assembly of positively charged TNS (pTNS) and negatively charged TNS (nTNS) on the surface of thin film composite (TFC) membrane. The unique features, rendered by hydrophilic TNS bilayer assembled on TFC membrane in the formation of a hydration layer to enhance the fouling resistance by high concentration oily saline water while maintaining the salt rejection, were discussed in this study. The characterization findings revealed that the surface properties of membrane were improved in terms of surface hydrophilicity, surface roughness, and polyamide(PA) cross-linking. The TFC RO membrane coated with 2-bilayer of TNS achieved >99% and >98% for oil and salt rejection, respectively. During the long-term study, the 2TNS-PA TFN membrane outperformed the pristine TFC membrane by exhibiting high permeability and much lower fouling propensity for low to high concentration of oily saline water concentration (1000 ppm, 5000 ppm and 10,000 ppm) over a 960 min operation. Meanwhile, the average permeability of uncoated TFC membrane could only be recovered by 95.7%, 89.1% and 82.9% for 1000 ppm, 5000 ppm and 10,000 ppm of the oily saline feedwater, respectively. The 2TNS-PA TFN membrane achieved almost 100% flux recovery for three cycles by hydraulic washing.

scholarly journals Ultrapermeable Thin Film Composite Membranes Enhanced via Doping MOF Nanosheets

2020 ◽  
Author(s):  
Min Liu ◽  
Ke Xie ◽  
MITCHELL NOTHLING ◽  
Lianhai Zu ◽  
qiang fu ◽  
...  
Keyword(s):  
Thin Film ◽  
Gas Separation ◽  
Gas Permeability ◽  
Polymeric Materials ◽  
Composite Membranes ◽  
Gas Diffusion ◽  
Separation Performance ◽  
Film Composite ◽  
Thin Film Composite ◽  
Tfc Membrane

Thin film composite (TFC) membranes have attracted increasing interest to meet the demands of industrial gas separation. However, the development of high performance TFC membranes within their current configuration faces two key challenges: (i) the thickness-dependent gas permeability of polymeric materials (mainly polydimethylsiloxane (PDMS)) and (ii) the geometric restriction effect due to the limited pore accessibility of porous substrates. Here we demonstrate for the first time that the incorporation of trace (~1.8 wt%) amounts of amorphous metal-organic framework (aMOF) nanosheets into the gutter layer of TFC assemblies can simultaneously address these two limitations, with experimental evidence revealing the creation of rapid gas diffusion pathways along horizontal direction. Leveraging this strategy, we successfully fabricated a novel TFC membrane, consisting of a PDMS/aMOF gutter and an ultrathin (~54 nm) poly(ethylene glycol) top selective layer<i> via</i> surface-initiated atom transfer radical polymerization (ATRP). The complete TFC membrane exhibits excellent processability and the highest CO<sub>2</sub> permeance (1,990 GPU with a CO<sub>2</sub>/N<sub>2</sub> ideal selectivity of 39) yet observed for a TFC membrane employing a PDMS gutter layer. This study reveals an avenue for the design and fabrication of a new TFC membrane system with unprecedented gas separation performance.

scholarly journals Ultrapermeable Thin Film Composite Membranes Enhanced via Doping MOF Nanosheets

2020 ◽  
Author(s):  
Min Liu ◽  
Ke Xie ◽  
MITCHELL NOTHLING ◽  
Lianhai Zu ◽  
qiang fu ◽  
...  
Keyword(s):  
Thin Film ◽  
Gas Separation ◽  
Gas Permeability ◽  
Polymeric Materials ◽  
Composite Membranes ◽  
Gas Diffusion ◽  
Separation Performance ◽  
Film Composite ◽  
Thin Film Composite ◽  
Tfc Membrane

Thin film composite (TFC) membranes have attracted increasing interest to meet the demands of industrial gas separation. However, the development of high performance TFC membranes within their current configuration faces two key challenges: (i) the thickness-dependent gas permeability of polymeric materials (mainly polydimethylsiloxane (PDMS)) and (ii) the geometric restriction effect due to the limited pore accessibility of porous substrates. Here we demonstrate for the first time that the incorporation of trace (~1.8 wt%) amounts of amorphous metal-organic framework (aMOF) nanosheets into the gutter layer of TFC assemblies can simultaneously address these two limitations, with experimental evidence revealing the creation of rapid gas diffusion pathways along horizontal direction. Leveraging this strategy, we successfully fabricated a novel TFC membrane, consisting of a PDMS/aMOF gutter and an ultrathin (~54 nm) poly(ethylene glycol) top selective layer<i> via</i> surface-initiated atom transfer radical polymerization (ATRP). The complete TFC membrane exhibits excellent processability and the highest CO<sub>2</sub> permeance (1,990 GPU with a CO<sub>2</sub>/N<sub>2</sub> ideal selectivity of 39) yet observed for a TFC membrane employing a PDMS gutter layer. This study reveals an avenue for the design and fabrication of a new TFC membrane system with unprecedented gas separation performance.

Facile development of comprehensively fouling-resistant reduced polyketone-based thin film composite forward osmosis membrane for treatment of oily wastewater

2021 ◽  
Vol 626 ◽  
pp. 119185 ◽  
Author(s):  
Ralph Rolly Gonzales ◽  
Lei Zhang ◽  
Yuji Sasaki ◽  
Wataru Kushida ◽  
Hideto Matsuyama ◽  
...  
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Oily Wastewater ◽  
Film Composite ◽  
Thin Film Composite
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