Effect of ZnO morphology on GO-ZnO modified polyamide reverse osmosis membranes for desalination

Rajakumaran, Revathy; Boddu, Vinisha; Kumar, Mathava; Shalaby, Marwa; Abdallah, Heba; Chetty, Raghuram

doi:10.1016/j.desal.2019.06.018

Cited by 75 publications

(13 citation statements)

References 49 publications

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“…The fouling caused, promotes decline of the permeate flux and consequent reduction in the performance of the membranes, which have to be constantly cleaned, increasing process costs [ 10 , 11 , 12 ]. In this sense, efforts are focused on methods to minimize fouling effects [ 13 , 14 , 15 , 16 , 17 ], and membrane surface modification (MSM) is currently considered the most favorable strategy [ 13 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of MWCO and Dopamine/Polyethyleneimine Concentrations on Surface Properties and Filtration Performance of Modified Membranes

et al. 2020

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The mussel-inspired method has been investigated to modify commercial ultrafiltration membranes to induce antifouling characteristics. Such features are essential to improve the feasibility of using membrane processes in protein recovery from waste streams, wastewater treatment, and reuse. However, some issues still need to be clarified, such as the influence of membrane pore size and the polymer concentration used in modifying the solution. The aim of the present work is to study a one-step deposition of dopamine (DA) and polyethyleneimine (PEI) on ultrafiltration membrane surfaces. The effects of different membrane molecular weight cut-offs (MWCO, 20, 30, and 50 kDa) and DA/PEI concentrations on membrane performance were assessed by surface characterization (FTIR, AFM, zeta potential, contact angle, protein adsorption) and permeation of protein solution. Results indicate that larger MWCO membranes (50 kDa) are most benefited by modification using DA and PEI. Moreover, PEI is primarily responsible for improving membrane performance in protein solution filtration. The membrane modified with 0.5:4.0 mg mL−1 (DA: PEI) presented a better performance in protein solution filtration, with only 15% of permeate flux drop after 2 h of filtration. The modified membrane can thus be potentially applied to the recovery of proteins from waste streams.

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Section: Introductionmentioning

confidence: 99%

Impact of MWCO and Dopamine/Polyethyleneimine Concentrations on Surface Properties and Filtration Performance of Modified Membranes

et al. 2020

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“…The presence of oxygenated functional groups on the surface of GO nanosheets provides potential active sites for attaching various nanomaterials and functional groups to the surface, aiding evolution of nanohybrid materials based on GO, which have a wide range of applications. 57 GO nanosheets with different metal and metal oxides including Ag, 58,59 Cu, 60 TiO 2 61 and ZnO 62 have been synthesized and successfully incorporated into the PA layer of TFC membrane, which exhibited excellent separation performance with antifouling and anti-bacterial properties. In a recent study, Ag-GO nanosheets were incorporated into the PA layer to fabricate biofouling-resistant TFN membrane (Table S1, ESI, † entry 7).…”

Section: Go Enriched Tfn Membranesmentioning

confidence: 99%

2D nanosheet enabled thin film nanocomposite membranes for freshwater production – a review

et al. 2021

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“…Besides, the modified membrane also showed improved membrane stability with consistent RO membrane performance, as indicated by the enhanced chlorine stability and antifouling properties (retained more than 75% of its original flux as compared to neat membrane at 41%). The reason for this stability was due to the lower surface roughness (due to enhanced hydrophilicity) that decreased the adhesion of foulant particles on membrane surface [144].…”

Section: Active Layermentioning

confidence: 99%

Polymeric Reverse Osmosis and Forward Osmosis Membranes for Water Desalination

Ang

2021

Materials Research Foundations

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Polymeric reverse osmosis (RO) and forward osmosis (FO) membranes have been predominantly used in membrane applications for water desalination. The membrane science has advanced in the past decades and various efforts have been employed to improve the membrane characteristics for enhanced water flux and impurities rejection capability. In this chapter, the progress of RO and FO membranes has been discussed in three sections: synthesis methods of RO and FO membranes, modification works done on the membranes and the formulation used for the synthesis of RO and FO membranes, with particular interest given to the incorporation of nanoparticles in the synthesis of thin film composite membrane.

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Effect of ZnO morphology on GO-ZnO modified polyamide reverse osmosis membranes for desalination

Cited by 75 publications

References 49 publications

Impact of MWCO and Dopamine/Polyethyleneimine Concentrations on Surface Properties and Filtration Performance of Modified Membranes

Impact of MWCO and Dopamine/Polyethyleneimine Concentrations on Surface Properties and Filtration Performance of Modified Membranes

2D nanosheet enabled thin film nanocomposite membranes for freshwater production – a review

Polymeric Reverse Osmosis and Forward Osmosis Membranes for Water Desalination

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