Fabrication of zinc doped aluminium oxide/polysulfone mixed matrix membranes for enhanced antifouling property and heavy metal removal

Sherugar, Prajwal; Naik, Nagaraj S.; Padaki, Mahesh; Nayak, Vignesh; Gangadharan, Athulya; Nadig, Akshatha R.; Deon, Sébastien

doi:10.1016/j.chemosphere.2021.130024

Cited by 77 publications

(37 citation statements)

References 73 publications

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“…Unlike organic pollutants that can be degraded naturally or through treatment by advanced oxidation processes (AOPs), heavy metals cannot be removed and is thus persistent in the environment if they are not physically removed [38]. Membrane-based technologies have been adopted to remove heavy metals from aqueous solutions because of their ease of operation, decent removal efficiencies, and most importantly, modest energy consumption [27,37]. For example, reverse osmosis (RO) membranes are known to attain high rejections (~95%) of heavy metals [39].…”

Section: Heavy Metal Removalmentioning

confidence: 99%

“…However, some filler materials tend to agglomerate (e.g., due to inherent hydrophobicity), and empirical evidence suggests that agglomeration is usually more pronounced under high filler or additive concentrations [ 23 , 24 ]. Hence, methods such as oxidation or modification of filler properties (to increase compatibility with the polymer matrix), ultrasonication as well as the addition of surfactants are typically employed to physically disperse the filler materials in the liquid phase prior to the membrane fabrication process [ 25 , 26 , 27 ].…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

“…Membrane-based technologies have been adopted to remove heavy metals from aqueous solutions because of their ease of operation, decent removal efficiencies, and most importantly, modest energy consumption [ 27 , 37 ]. For example, reverse osmosis (RO) membranes are known to attain high rejections (~95%) of heavy metals [ 39 ].…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

“…Because the pores of a typical UF membrane cannot exclude heavy metals during filtration, researchers have attempted to circumvent this limitation by either modifying the size of the hydrated ions or the surface pore size of the UF membrane [27,41,43].…”

mentioning

confidence: 99%

“…For example, the interaction between alumina particles and arsenic can lead to the formation of bigger complexes in size, thereby being more preferentially rejected by the pores of the UF membrane [27]. In another example, Namdar et al reported a successful approach to simultaneously increase the rejection of chromium ions and humic acid via size exclusion effects [43].…”

mentioning

confidence: 99%

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Emerging Materials to Prepare Mixed Matrix Membranes for Pollutant Removal in Water

et al. 2021

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Various pollutants of different sizes are directly (e.g., water-borne diseases) and indirectly (e.g., accumulation via trophic transfer) threatening our water health and safety. To cope with this matter, multifaceted approaches are required for advanced wastewater treatment more efficiently. Wastewater treatment using mixed matrix membranes (MMMs) could provide an excellent alternative since it could play two roles in pollutant removal by covering adsorption and size exclusion of water contaminants simultaneously. This paper provides an overview of the research progresses and trends on the emerging materials used to prepare MMMs for pollutant removal from water in the recent five years. The transition of the research trend was investigated, and the most preferred materials to prepare MMMs were weighed up based on the research trend. Various application examples where each emerging material was used have been introduced along with specific mechanisms underlying how the better performance was realized. Lastly, the perspective section addresses how to further improve the removal efficiency of pollutants in an aqueous phase, where we could find a niche to spot new materials to develop environmentally friendly MMMs, and where we could further apply MMMs.

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