Efficient oil-water emulsion treatment via novel composite membranes fabricated by CaCO3-based biomineralization and TA-Ti(IV) coating strategy

Xie, Hongli; Chen, Binghong; Lin, Hongjun; Li, Renjie; Shen, Liguo; Yu, Genying; Yang, Lining

doi:10.1016/j.scitotenv.2022.159183

Cited by 25 publications

(2 citation statements)

References 61 publications

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“…This process resulted in a uniformly distributed coating of a TA-Fe 3+ layer, which improved the wettability and water permeance of the membrane ( Figure 9 a,b). Tannic acid has been the most-used phenolic ligand for the fabrication of thin films of high surface wettability such as TA-Ti 4+ [ 63 , 64 ], TA-Fe 3+ [ 65 ], and TA-Ag + [ 66 ] self-assembled layers. TA–metal ion coordination over the membrane surface converts the hydrophobicity of most polymeric membranes to hydrophilicity with underwater oleophobicity.…”

Section: Applicationsmentioning

confidence: 99%

Separation Performance of Membranes Containing Ultrathin Surface Coating of Metal-Polyphenol Network

Kinfu

Rahman

2023

Membranes

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Metal–polyphenol networks (MPNs) are being used as versatile coatings for regulating membrane surface chemistry and for the formation of thin separation layers. The intrinsic nature of plant polyphenols and their coordination with transition metal ions provide a green synthesis procedure of thin films, which enhance membrane hydrophilicity and fouling resistance. MPNs have been used to fabricate tailorable coating layers for high-performance membranes desirable for a wide range of applications. Here, we present the recent progress of the use of MPNs in membrane materials and processes with a special focus on the important roles of tannic acid–metal ion (TA-Mn+) coordination for thin film formation. This review introduces the most recent advances in the fabrication techniques and the application areas of TA-Mn+ containing membranes. In addition, this paper outlines the latest research progress of the TA–metal ion containing membranes and summarizes the role of MPNs in membrane performance. The impact of fabrication parameters, as well as the stability of the synthesized films, is discussed. Finally, the remaining challenges that the field still faces and potential future opportunities are illustrated.

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Section: Applicationsmentioning

confidence: 99%

Separation Performance of Membranes Containing Ultrathin Surface Coating of Metal-Polyphenol Network

Kinfu

Rahman

2023

Membranes

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“…In addition, the high degree of cross-linking of the copolymer PANI in the alginate must be considered. Therefore, tannic acid (TA), which is rich in catechol and pyrogallol groups, can serve as a versatile building block with a complex spectrum of chemical versatility, including selfpolymerization, electrostatic interaction formation, and metal ion complexation [12]. Based on the above, it can be hypothesised that the oxidised TA under alkaline conditions could react with the amine and imine functional groups in PANI polymer chains to form a stable coordination complex in alginate.…”

Section: Introductionmentioning

confidence: 99%

Biopolymer-based composite adsorbent beads for the removal of methylene blue dyes

Alizan,

Senusi,

Amri

et al. 2024

EAJ

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Dyes containing waste streams are the most common pollutants found in wastewater, posing a severe threat to both the ecosystem and the environment. Adsorption emerges as one of the most effective and widely applied treatments for removing dyes due to its simple operation, high efficiency, and low cost. Sodium alginate, as a biopolymer, is one of the alternative adsorbents used in the adsorption process. However, the lack of active sites and low rigidity limits the adsorption capacity performance of this biopolymer. This study aims to introduce biopolymer-based composite adsorbent beads for removing methylene blue (MB) dye from an aqueous solution. Herein, TA/PANI/SA composite adsorbent beads consisting of tannic acid (TA) and polyaniline (PANI) were prepared by the cross-linking method of sodium alginate (SA) with the presence of divalent cations in calcium chloride. Characterization was performed using FTIR analysis to determine the changes in surface-modified composite beads. The results indicated that the removal efficiency of MB dye exhibited a significant enhancement of up to 72% when compared to untreated alginate beads, which only achieved approximately 30% removal. It was also found that the interactions occurred during the cross-linking process as well as during the adsorption process of MB dye onto the composite adsorbent beads. The adsorption mechanisms of MB dye by composite adsorbent beads include electrostatic interaction, π-π interactions, and hydrogen bonding. The improvement in the removal efficiency and the possibility of interactions during the cross-linking process suggested that the biopolymer-based composite beads have great potential to be used as adsorbents for removing dye in an aqueous solution.

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Coatings for Membrane Separations

Saxena,

Soni,

Pilli

et al. 2024

Functional Coatings for Biomedical, Energy, and Environmental Applications

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Efficient oil-water emulsion treatment via novel composite membranes fabricated by CaCO3-based biomineralization and TA-Ti(IV) coating strategy

Cited by 25 publications

References 61 publications

Separation Performance of Membranes Containing Ultrathin Surface Coating of Metal-Polyphenol Network

Separation Performance of Membranes Containing Ultrathin Surface Coating of Metal-Polyphenol Network

Biopolymer-based composite adsorbent beads for the removal of methylene blue dyes

Coatings for Membrane Separations

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