Novel Polyurethane/Polyvinyl chloride-co-vinyl acetate crosslinked membrane for reverse osmosis (RO)

Ahmad, Adnan; Jamshaid, Fahd; Adrees, Muhammad; Iqbal, Sadia Sagar; Sabir, Aneela; Riaz, Tariq; Zaheer, Hira; Islam, Atif; Jamil, Tahir

doi:10.1016/j.desal.2017.07.007

Cited by 26 publications

(10 citation statements)

References 48 publications

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“…In order to investigate the morphology of membranes, SEM serves as an effective analytical technique. It provides sufficient qualitative information regarding the morphology of surface as well as cross section of the samples . RO membranes are generally referred as dense nonporous membranes due to their pore ranging from 1 to 10 Å.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and investigation of desalinating, antibacterial, and mechanical properties of tetraethylorthosilicate crosslinked chitosan/polyethylene glycol (PEG‐300) membranes for reverse osmosis

Raza

Kayani

Sabir³

et al. 2019

J of Applied Polymer Sci

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Solution casting method was used to synthesize chitosan (CS)-based membranes for reverse osmosis (RO) using PEG-300 and tetraethylorthosilicate as a crosslinker. Their salt rejection (%) and permeate flux (mL/h.m 2 ) was measured by using lab scale RO plant. FTIR spectroscopy reveals interactions between CS and PEG by shifting of OH peak from 3237 cm −1 to lower wavenumber in modified membranes. SEM results showed pores in modified membranes while pure CS membranes had uniform nonporous and dense microstructure. DMA results demonstrated that the addition of PEG lowers the T g value up to 6.5%. Water content of membranes increases up to 82.63% as the amount of PEG increases owing to its hydrophilic nature. The bacterial killing ability showed that the modified membranes possess good antibacterial activity against Escherichia coli in comparison to the control film. The permeation results revealed that salt rejection and flux of the modified membranes increased up 60% and 86.36 mL/h.m 2 , respectively.

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Section: Resultsmentioning

confidence: 99%

Synthesis and investigation of desalinating, antibacterial, and mechanical properties of tetraethylorthosilicate crosslinked chitosan/polyethylene glycol (PEG‐300) membranes for reverse osmosis

Raza

Kayani

Sabir³

et al. 2019

J of Applied Polymer Sci

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“…There have not been any studies in the last 4 years catered specifically to novel membrane materials and modification for PV-RO systems, although there have been several advances in RO materials in general [99][100][101][102][103][104][105], especially materials for anti-fouling [106,107] that could be extended to PV-RO as well as solar thermal powered RO systems. Alghoul et al…”

Section: Novel Membranes and Configurations For Pv-romentioning

confidence: 99%

Solar powered desalination – Technology, energy and future outlook

2019

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Growing water demands have led to rapidly increasing desalination installation capacity worldwide. In an attempt to lower carbon footprint resulting from high-energy consuming desalination processes, attention has shifted to using renewable energy sources to power desalination. With solar irradiation ample in regions that heavily rely on desalination, solar powered desalination provides a sustainable solution to meeting water needs. The compatibility of each desalination process with the solar technology is driven by whether the kind of energy needed is thermal or electrical, as well as its availability. With rapid advances in solar energy technologiesboth photovoltaic and solar thermal, there has also been growing interest in coupling solar energy with desalination, with a focus on improving energy efficiency. In this review, the most recent developments in photovoltaic powered reverse osmosis (PV-RO), solar thermal powered reverse osmosis (ST-RO) are discussed with respect to membrane materials, process configuration, energy recovery devices and energy storage. In addition, advances in new materials for solar powered membrane distillation (MD) and solar stills in the past two years have also been reviewed. Future outlook considers the use of hybrid renewable energy systems as well as solar powered forward osmosis and dewvaporation. Solar powered desalination systems have been analysed with emphasis on technological and energy consumption aspects.

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“…These membrane samples were then subjected to drying for 48 h at 70 °C under vacuum in an oven, and weights of dried samples were determined. The water content (WC %) was calculated using Equation (1) [ 62 ].

where, WC stands for water content, WS stands for weight of wet sample and DS stands for weight of dried sample.…”

Section: Characterizationmentioning

confidence: 99%

“…These membrane samples were then subjected to drying for 48 h at 70 • C under vacuum in an oven, and weights of dried samples were determined. The water content (WC %) was calculated using Equation ( 1) [62].…”

Section: Percentage Water Contentmentioning

confidence: 99%

Effect of Varying Amount of Polyethylene Glycol (PEG-600) and 3-Aminopropyltriethoxysilane on the Properties of Chitosan based Reverse Osmosis Membranes

Kayani

Raza

et al. 2021

IJMS

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Chitosan and polyethylene glycol (PEG-600) membranes were synthesized and crosslinked with 3-aminopropyltriethoxysilane (APTES). The main purpose of this research work is to synthesize RO membranes which can be used to provide desalinated water for drinking, industrial and agricultural purposes. Hydrogen bonding between chitosan and PEG was confirmed by displacement of the hydroxyl absorption peak at 3237 cm−1 in pure chitosan to lower values in crosslinked membranes by using FTIR. Dynamic mechanical analysis revealed that PEG lowers Tg of the modified membranes vs. pure chitosan from 128.5 °C in control to 120 °C in CS-PEG5. SEM results highlighted porous and anisotropic structure of crosslinked membranes. As the amount of PEG was increased, hydrophilicity of membranes was increased and water absorption increased up to a maximum of 67.34%. Permeation data showed that flux and salt rejection value of the modified membranes was increased up to a maximum of 80% and 40.4%, respectively. Modified films have antibacterial properties against Escherichia coli as compared to control membranes.

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Novel Polyurethane/Polyvinyl chloride-co-vinyl acetate crosslinked membrane for reverse osmosis (RO)

Cited by 26 publications

References 48 publications

Synthesis and investigation of desalinating, antibacterial, and mechanical properties of tetraethylorthosilicate crosslinked chitosan/polyethylene glycol (PEG‐300) membranes for reverse osmosis

Synthesis and investigation of desalinating, antibacterial, and mechanical properties of tetraethylorthosilicate crosslinked chitosan/polyethylene glycol (PEG‐300) membranes for reverse osmosis

Solar powered desalination – Technology, energy and future outlook

Effect of Varying Amount of Polyethylene Glycol (PEG-600) and 3-Aminopropyltriethoxysilane on the Properties of Chitosan based Reverse Osmosis Membranes

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