Flux enhancement in reverse osmosis membranes induced by synergistic effect of incorporated palygorskite/chitin hybrid nanomaterial

Mamah, Stanley Chinedu; Goh, Pei Sean; Ismail, Ahmad Fauzi; Suzaimi, Nur Diyana; Ahmad, Norhaiza; Lee, Wei Jie

doi:10.1016/j.jece.2021.105432

Cited by 21 publications

(7 citation statements)

References 57 publications

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“…We have reported a practical and cost effective fabrication approach for the development of PAL‐CH nanomaterial 36 . In addition, PAL‐CH incorporated RO membrane developed in our previous study demonstrated significantly enhanced pure water flux, thus providing the evidence of the potential of the hybrid nanomaterial for desalination and wastewater treatment 37 . It is pertinent that the surface hydrophilicity, porosity, including the roughness of the substrate remarkably influence the formation of PA layer on the substrate in terms of its degree of crosslinking during IP and thickness, hence can alter the flux and rejection performance of FO membranes.…”

Section: Introductionmentioning

confidence: 88%

“…PAL-CH nanomaterial hybrid synthesis was accomplished through a facile approach as reported earlier. 36,37 In a nutshell, the procedure began with the addition of 200 mg of PAL powder to 100 ml of a 2 mg ml À1 chitin nanofibers (ChNfs) solution.…”

Section: Pal-ch Nanomaterials Hybrid Synthesismentioning

confidence: 99%

“…36 In addition, PAL-CH incorporated RO membrane developed in our previous study demonstrated significantly enhanced pure water flux, thus providing the evidence of the potential of the hybrid nanomaterial for desalination and wastewater treatment. 37 It is pertinent that the surface hydrophilicity, porosity, including the roughness of the substrate remarkably influence the formation of PA layer on the substrate in terms of its degree of crosslinking during IP and thickness, hence can alter the flux and rejection performance of FO membranes. As the structural parameter is proportionally reduced with the increasing membrane porosity and hydrophilicity, a key step for ICP control is to prepare a polymeric substrate with high porosity and hydrophilicity while maintaining a sufficiently low thickness.…”

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confidence: 99%

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Bio‐polymer modified nanoclay embedded forward osmosis membranes with enhanced desalination performance

Mamah

Goh

Ismail

et al. 2022

J of Applied Polymer Sci

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The substrate of forward osmosis (FO) thin‐film composite (TFC) membranes supports the formation of the selective layer. It can remarkably influence the structure as well as the physiochemical characteristics of the selective layer formed atop. Therefore, the improvement of TFC substrates in terms of its thickness, tortuosity and porosity can further fine tune the properties of the resultant TFC membranes. In this present study, TFC membrane comprising of polyamide selective layer and palygorskite‐chitin (PAL‐CH) containing polysulfone substrate was developed for FO desalination. The effects of PAL‐CH on the surface and structural properties of the substrate were examined. The FO desalination performance of the resultant membranes was evaluated in both active‐layer facing feed solution and active‐layer facing draw solution modes using NaCl as draw solution. In comparison with the un‐modified membrane, the TFC membrane with PAL‐CH embedded polysulfone substrate exhibited enhanced water flux and lower structural parameter. The incorporation of PAL‐CH hybrid nanomaterial resulted in improved flux of 34.39 L/m2 h1, which corresponds to improvement by 110% compared to that of pristine membranes. During the antifouling test, PAL‐CH‐S/PA membrane attained 97% water recovery while the pristine membrane attained 90% water recovery.

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Section: Introductionmentioning

confidence: 88%

Section: Pal-ch Nanomaterials Hybrid Synthesismentioning

confidence: 99%

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confidence: 99%

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Bio‐polymer modified nanoclay embedded forward osmosis membranes with enhanced desalination performance

Mamah

Goh

Ismail

et al. 2022

J of Applied Polymer Sci

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“…The blending of plastic waste with hydrophilic polymers or additives can overcome this limitation. Commonly used hydrophilic additives, such as polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG), can be suitably used to improve the hydrophilicity as well as the mechanical strength and porosity of the plastic-derived polymers [129][130][131]. The hydrophobic nature of most plastic materials could be an ideal candidate for membrane distillation, which relies on a microporous hydrophobic membrane to prevent mass transfer of liquid, thereby creating a gas-liquid interface.…”

Section: Plastics and Rubbermentioning

confidence: 99%

Waste Reutilization in Polymeric Membrane Fabrication: A New Direction in Membranes for Separation

2021

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In parallel to the rapid growth in economic and social activities, there has been an undesirable increase in environmental degradation due to the massively produced and disposed waste. The need to manage waste in a more innovative manner has become an urgent matter. In response to the call for circular economy, some solid wastes can offer plenty of opportunities to be reutilized as raw materials for the fabrication of functional, high-value products. In the context of solid waste-derived polymeric membrane development, this strategy can pave a way to reduce the consumption of conventional feedstock for the production of synthetic polymers and simultaneously to dampen the negative environmental impacts resulting from the improper management of these solid wastes. The review aims to offer a platform for overviewing the potentials of reutilizing solid waste in liquid separation membrane fabrication by covering the important aspects, including waste pretreatment and raw material extraction, membrane fabrication and characterizations, as well as the separation performance evaluation of the resultant membranes. Three major types of waste-derived polymeric raw materials, namely keratin, cellulose, and plastics, are discussed based on the waste origins, limitations in the waste processing, and their conversion into polymeric membranes. With the promising material properties and viability of processing facilities, recycling and reutilization of waste resources for membrane fabrication are deemed to be a promising strategy that can bring about huge benefits in multiple ways, especially to make a step closer to sustainable and green membrane production.

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“…The produced composite membranes had porosity% of 65-80%, whereas the neat membrane's porosity was 65%. Palygorskitechitin (PAL-CH) nanomaterials were incorporated by Mamah et al [80] onto polyamide thin film composite membranes. Mutharasi et al [81] incorporated Co-Al layered double hydroxide (LDH) into polysulfone membranes via coating.…”

Section: Removal Of Emerging Organic Pollutants With Non-biodegradable Polymersmentioning

confidence: 99%

Recent Advances in Biopolymeric Membranes towards the Removal of Emerging Organic Pollutants from Water

2021

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Herein, this paper details a comprehensive review on the biopolymeric membrane applications in micropollutants’ removal from wastewater. As such, the implications of utilising non-biodegradable membrane materials are outlined. In comparison, considerations on the concept of utilising nanostructured biodegradable polymeric membranes are also outlined. Such biodegradable polymers under considerations include biopolymers-derived cellulose and carrageenan. The advantages of these biopolymer materials include renewability, biocompatibility, biodegradability, and cost-effectiveness when compared to non-biodegradable polymers. The modifications of the biopolymeric membranes were also deliberated in detail. This included the utilisation of cellulose as matrix support for nanomaterials. Furthermore, attention towards the recent advances on using nanofillers towards the stabilisation and enhancement of biopolymeric membrane performances towards organic contaminants removal. It was noted that most of the biopolymeric membrane applications focused on organic dyes (methyl blue, Congo red, azo dyes), crude oil, hexane, and pharmaceutical chemicals such as tetracycline. However, more studies should be dedicated towards emerging pollutants such as micropollutants. The biopolymeric membrane performances such as rejection capabilities, fouling resistance, and water permeability properties were also outlined.

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Flux enhancement in reverse osmosis membranes induced by synergistic effect of incorporated palygorskite/chitin hybrid nanomaterial

Cited by 21 publications

References 57 publications

Bio‐polymer modified nanoclay embedded forward osmosis membranes with enhanced desalination performance

Bio‐polymer modified nanoclay embedded forward osmosis membranes with enhanced desalination performance

Waste Reutilization in Polymeric Membrane Fabrication: A New Direction in Membranes for Separation

Recent Advances in Biopolymeric Membranes towards the Removal of Emerging Organic Pollutants from Water

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