Hydrophilic polysulfone/Lantana camara mixed matrix membranes for the removal of dyes from water

Zwane, Simphiwe; Kuvarega, Alex T.; Mhlanga, Sabelo D.; Dlamini, Derrick S.

doi:10.1016/j.surfin.2018.10.001

Cited by 8 publications

(7 citation statements)

References 30 publications

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“…Dye molecules typically exist in complex forms (after binding with other molecules). They are generally resistant to aerobic digestion, light, heat, or oxidants, making them difficult to treat using the conventional wastewater treatment process [ 52 , 53 ]. Because of their complex structures and the presence of benzene rings (aromatic), they are difficult to biodegrade, and thus it is essential to physically remove them.…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

“…It is also worth noting that the dye adsorption rate is dependent on the feed pH and temperature. For example, it was reported that Congo red dye was more readily rejected (99.5%) at low pH because cations were more preferentially adsorbed onto the filler material (L. Camara) due to electrostatic attraction effects [ 52 ]. However, another study reported that the competitive sorption between dye molecules and H + ions at low pH could result in lower dye adsorption rates [ 57 ].…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

“…Nevertheless, it is generally true that the removal efficiency of the MMM will decrease at higher dye concentrations because of the saturation of the adsorption sites (which can lead to enhanced concentration polarization). The driving force for mass transfer across the membrane will inevitably be weaker, and water flux will decrease [ 52 ]. The key point here is that the removal efficiency of MMM is typically lower for more concentrated feeds.…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

“…Secondly, dyes can be rejected via the size exclusion effect when the size of the hydrated dye ions exceeds the pore size of the membrane ( Figure 4 D). Typically, a combination of charge and size exclusion effects work in tandem to reject dyes [ 52 , 53 ]. The size exclusion effect is particularly pronounced when the dye molecules agglomerate in aqueous solutions [ 52 ].…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

“…Typically, a combination of charge and size exclusion effects work in tandem to reject dyes [ 52 , 53 ]. The size exclusion effect is particularly pronounced when the dye molecules agglomerate in aqueous solutions [ 52 ]. However, for dye molecules that are of low molecular weights (such that it is in the range of the molecular weight cut-off (MWCO) of UF membranes, e.g., 618 g/mol for reactive orange-16 dye), the Donnan exclusion effect will be more dominant than the size effect [ 56 ].…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

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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Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

See 3 more Smart Citations

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

et al. 2021

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Agglomeration tendency and activated carbon concentration effects on activated carbon‐polysulfone mixed matrix membrane performance: A design of experiment formulation study

Lewis

Alshami

Talukder

et al. 2022

J of Applied Polymer Sci

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Mixed matrix membranes (MMMs) are effective materials for emerging separation applications. While MMMs show promise, various membrane formation schemes have produced particle agglomerations, surface ruptures, and varying separation performance as a result. In this work, a replicated 2 × 23 full factorial design of experiment (DOE) and a mixture analysis was conducted to investigate the effects of activated carbon, polyethylene glycol (PEG), and solvent type, used during MMM formation. Aniline blue filtration was used as a model for performance. A thorough analysis was conducted on contact angle, agglomeration frequency, water flux, and dye rejection. Specifically, a novel and facile method to study agglomeration tendencies is presented. Among other trends, agglomeration tendencies were mitigated by the addition of PEG during the fabrication process. Water flux increased from 10 to 55 LMH when PEG was used as a pore former and dye rejection increased from 72% to 90% with the addition of AC particles.

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Separation of Congo Red Dye from Water Using AgNPs Based Hybrid UF Membrane

Basu¹,

Lakra²,

Kumari³

et al. 2022

Advances in Chemical, Bio and Environmental Engineering

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Hydrophilic polysulfone/Lantana camara mixed matrix membranes for the removal of dyes from water

Cited by 8 publications

References 30 publications

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

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

Agglomeration tendency and activated carbon concentration effects on activated carbon‐polysulfone mixed matrix membrane performance: A design of experiment formulation study

Separation of Congo Red Dye from Water Using AgNPs Based Hybrid UF Membrane

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