Modification of Polysulfone Ultrafiltration Membranes via Addition of Anionic Polyelectrolyte Based on Acrylamide and Sodium Acrylate to the Coagulation Bath to Improve Antifouling Performance in Water Treatment

Plisko, Tatiana; Bildyukevich, A. V.; Burts, Katsiaryna S.; Hliavitskaya, T. A.; Penkova, Anastasia V.; Ermakov, Sergey; Ulbricht, Mathias

doi:10.3390/membranes10100264

Cited by 23 publications

(24 citation statements)

References 95 publications

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“…As shown in Figure 3(b), the outer surface of the membrane was flat without pores. The cross-section of membrane was typically finger-like structure, indicating the feature of ultrafiltration membrane (Shen et al 2010;Burts et al 2020;Plisko et al 2020). In addition, the inner and outer diameters of the HFM were respectively about 1.2 mm and 1.4 mm, which was consistent with the designed diameters.…”

Section: Resultssupporting

confidence: 66%

PSU-g-SBMA hollow fiber membrane for treatment of oily wastewater

Shen

Zhang

Meng

2021

Water Science and Technology

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Ultrafiltration membranes can intercept oil particles smaller than 10 μm, but the membranes are easy to be contaminated by oil due to their hydrophobicity. To treat various oily wastewater, we prepared a hydrophilic hollow fiber membrane (HFM) with anti-fouling property by grafting sulfobetaine methacrylate (SBMA) onto polysulfone (PSU). For six simulated wastewater containing emulsified oil at 1,000 mg/L, the PSU-g-SBMA HFM was able to remove 98.5–99.7% of oil, higher than that of PSU HFM at 91.1–98.9%. The oil concentration in filtrate was less than 15 mg/L, which could meet the discharge standard of wastewater. The water flux of PSU-g-SBMA HFM can be completely recovered after being washed by rhamnolipid and alkali solution, while the same cleaning process could not recover the PSU HFM. As found, the contact angles of oil droplets on the PSU-g-SBMA membrane were larger than those on PSU membrane, which indicated the improved hydrophilicity by PSU-g-SBMA. For 48 h of filtration to soybean and diesel oil/water emulsion, the effect of PSU-g-SBMA HFM was stable and the flux could be completely recovered by cleaning. Therefore, we provided a new method for oily wastewater treatment, which can efficiently and energy-saving remove various oil substances in wastewater.

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Section: Resultssupporting

confidence: 66%

PSU-g-SBMA hollow fiber membrane for treatment of oily wastewater

Shen

Zhang

Meng

2021

Water Science and Technology

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“…The process of inversion involved a two-phase conversion of the homogeneous PS solution, one of which is a solid phase; it was rich in the polymer and formed the membrane. A liquid phase is another one; it produced pores [37][38][39][40][41][42][43].…”

Section: Fig1 Graphical Representation Of Membrane Preparation By Phase Inversion Methodmentioning

confidence: 99%

Assessment of green biodiesel production based on Egyptian waste cooking oil using different porous membranes

et al. 2021

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In this study, green biodiesel was produced from Egyptian waste cooking oil by trans-esterification reaction using membrane technology. The produced biodiesel was characterized by physicochemical properties, FTIR, and gas chromatography/mass spectrometry (GC/MS). It was found that it meets the specifications of the American standard test method (ASTM) D6751. Because glycerol was the only impurity that was difficult to separate from the prepared biodiesel by regular methods, polysulfone (PS) membrane and three hybrid membranes were prepared using the phase inversion method for the glycerol purification process. The hybrid membranes were prepared by mixing PS with different weight ratios of polyethylene glycol (PEG), polyvinyl pyrrolidone (PVP), and zinc oxide nanoparticles (ZnO NPs). The structure and surface morphology of the resulted membranes were characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and thermal gravimetric analysis (TGA). The purification efficiency of these membranes was satisfied by highperformance liquid chromatography (HPLC) and weight loss ratio. The HPLC chromatogram showed that the membrane of the PS/ZnO NPs provided the highest separation rate of the biodiesel by-product glycerol compared to the other ones.

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“…PAA solutions of various concentrations were prepared in sealed containers and titrated by water or EtOH under constant stirring at 25 • C. The titrant was added dropwise with a syringe until the solution became turbid. The cloud point was marked when the turbidity of the solution did not disappear for 24 h [16][17][18].…”

Section: Ternary Phase Diagramsmentioning

confidence: 99%

Phase Separation within a Thin Layer of Polymer Solution as Prompt Technique to Predict Membrane Morphology and Transport Properties

et al. 2020

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In this work, the precipitation of a thin layer of a polymer solution was proposed to imitate the process of asymmetric membrane formation by a non-solvent induced phase separation (NIPS) technique. The phase inversion within the thin (<500 μm) and bulk (~2 cm) layer of polyamic-acid (PAA) in N-methyl-2-pyrrolidone (NMP) by using water as non-solvent was considered. It was shown that polymer films formed within the “limited” layer of polymer solution showed a good agreement with the morphology of corresponded asymmetric flat-sheet membranes even in the case of three-component casting solution (PAA/NMP/EtOH). At the same time, the polymer films formed on the interface of two bulk phases (“infinite” regime) did not fully correspond to the membrane structure. It was shown that up to 50% of NMP solvent in PAA solution can be replaced by ethanol, which can have a renewable origin. By changing the ethanol content in the casting solution, the average size of transport pores can be varied in the range of 12–80 nm, and the liquid permeance from 16.6 up to 207 kg/m2∙h∙bar. To summarize, the precipitation of polymer solution within the thin layer can be considered a prompt technique and a powerful tool for fast screening and optimization of the complex composition of casting solutions using its small quantity. Furthermore, the prediction of membrane morphology can be done without casting the membrane, further post-treatment procedures, and scanning electron microscopy (SEM) analysis.

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Modification of Polysulfone Ultrafiltration Membranes via Addition of Anionic Polyelectrolyte Based on Acrylamide and Sodium Acrylate to the Coagulation Bath to Improve Antifouling Performance in Water Treatment

Cited by 23 publications

References 95 publications

PSU-g-SBMA hollow fiber membrane for treatment of oily wastewater

PSU-g-SBMA hollow fiber membrane for treatment of oily wastewater

Assessment of green biodiesel production based on Egyptian waste cooking oil using different porous membranes

Phase Separation within a Thin Layer of Polymer Solution as Prompt Technique to Predict Membrane Morphology and Transport Properties

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