Polysulfone hollow fiber membrane containing charcoal‑carbon nanomaterial for wastewater treatment in membrane bioreactor

Dolatkhah, Fatemeh; Mohammadi, Toraj; Tofighy, Maryam Ahmadzadeh

doi:10.1016/j.jwpe.2022.103222

Cited by 9 publications

(8 citation statements)

References 55 publications

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“…In pursuit of the same objective, adsorption, 12 photocatalysis, 13 activated sludge processes, 14 advanced oxidation processes (AOPs), 15 chemical coagulation and flocculation, 16 ozonation, 17 membrane bioreactors (MBRs), 18 reverse osmosis (RO), electrocoagulation 19 and advanced membrane filtration 20 emerge as promising technologies for the mitigation of emerging pollutant concentration in water and wastewater. Each method has its pros and cons; biological treatment involves expensive enzymes, bacteria, and fungi that are difficult to handle at the same time and needs proper storage and preservation systems.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of a disordered N-doped carbonaceous aerogel from waste for the removal of over-the-counter drugs and environmental assessment

Asati,

Mondal,

Tripathi

2024

RSC Appl. Interfaces

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Section: Introductionmentioning

confidence: 99%

Green synthesis of a disordered N-doped carbonaceous aerogel from waste for the removal of over-the-counter drugs and environmental assessment

Asati,

Mondal,

Tripathi

2024

RSC Appl. Interfaces

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“…Oil–water separation can be crucial in addressing the issues related to industrial oily wastewater and other types of oil–water pollution. Among the excellent technologies for separation, membranes with super wettability have attracted considerable research attention, owing to their low energy consumption and high efficiency [ 8 , 9 , 10 , 11 , 12 ]. Accordingly, the development of unique techniques that can separate various oil-polluted water streams with excellent recyclability and mechanical stability is paramount [ 7 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Constructing a Hierarchical Hydrophilic Crosslink Network on the Surface of a Polyvinylidene Fluoride Membrane for Efficient Oil/Water Emulsion Separation

Zhang

Gao

et al. 2023

Membranes

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Oil/water mixtures from industrial and domestic wastewater adversely affect the environment and human beings. In this context, the development of a facile and improved separation method is crucial. Herein, dopamine was used as a bioadhesive to bind tea polyphenol (TP) onto the surface of a polyvinylidene fluoride (PVDF) membrane to form the first hydrophilic polymer network. Sodium periodate (NaIO4) is considered an oxidising agent for triggering self-polymerisation and can be used to introduce hydrophilic groups via surface manipulation to form the second hydrophilic network. In contrast to the individual polydopamine (PDA) and TP/NaIO4 composite coatings for a hydrophobic PVDF microfiltration membrane, a combination of PDA, TP, and NaIO4 has achieved the most facile treatment process for transforming the hydrophobic membrane into the hydrophilic state. The hierarchical superhydrophilic network structure with a simultaneous underwater superoleophobic membrane exhibited excellent performance in separating various oil-in-water emulsions, with a high water flux (1530 L.m−2 h−1.bar) and improved rejection (98%). The water contact angle of the modified membrane was 0° in 1 s. Moreover, the steady polyphenol coating was applied onto the surface, which endowed the membrane with an adequate antifouling and recovery capability and a robust durability against immersion in an acid, alkali, or salt solution. This facile scale-up method depends on in situ plant-inspired chemistry and has remarkable potential for practical applications.

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“…[12] naphthalene moieties, -CF 3 and -CH 3 groups synthesis within the work -Flat-sheet Gas separation [13] -SO 3 H groups Sigma-Aldrich, St. Louis, MO, USA M n ~22 Flat-sheet Polymer fuel cells [14] N-dodecyl-4(R)-hydroxy-l-proline BASF, Ludwigshafen, Germany -Flat-sheet Dialysis [15] phosphonic acid (HO) It should be noted that the chemical modification of PSF is carried out for the subsequent production of exclusively flat-type membranes (see Table 1). In the case of a hollow fiber configuration, to improve the properties of membranes obtained from PSF, a common approach is to introduce various additives and fillers into the membrane matrix, i.e., the creation of mixed-matrix membranes (MMMs) [22][23][24][25][26][27][28][29]. To obtain MMMs and unmodified hollow fiber membranes from PSF, as a rule, commercial grades of PSF are used [22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Effect of Molecular Weight and Chemical Structure of Terminal Groups on the Properties of Porous Hollow Fiber Polysulfone Membranes

et al. 2023

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For the first time, polysulfones (PSFs) were synthesized with chlorine and hydroxyl terminal groups and studied for the task of producing porous hollow fiber membranes. The synthesis was carried out in dimethylacetamide (DMAc) at various excesses of 2,2-bis(4-hydroxyphenyl)propane (Bisphenol A) and 4,4′-dichlorodiphenylsulfone, as well as at an equimolar ratio of monomers in various aprotic solvents. The synthesized polymers were studied by nuclear magnetic resonance (NMR), differential scanning calorimetry, gel permeation chromatography (GPC), and the coagulation values of 2 wt.% PSF polymer solutions in N-methyl-2-pyrollidone were determined. According to GPC data, PSFs were obtained in a wide range of molecular weights Mw from 22 to 128 kg/mol. NMR analysis confirmed the presence of terminal groups of a certain type in accordance with the use of the corresponding monomer excess in the synthesis process. Based on the obtained results on the dynamic viscosity of dope solutions, promising samples of the synthesized PSF were selected to produce porous hollow fiber membranes. The selected polymers had predominantly –OH terminal groups and their molecular weight was in the range of 55–79 kg/mol. It was found that porous hollow fiber membrane from PSF with Mw 65 kg/mol (synthesized in DMAc with an excess of Bisphenol A 1%) has a high helium permeability of 45 m3/m2∙h∙bar and selectivity α (He/N2) = 2.3. This membrane is a good candidate to be used as a porous support for thin-film composite hollow fiber membrane fabrication.

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Polysulfone hollow fiber membrane containing charcoal‑carbon nanomaterial for wastewater treatment in membrane bioreactor

Cited by 9 publications

References 55 publications

Green synthesis of a disordered N-doped carbonaceous aerogel from waste for the removal of over-the-counter drugs and environmental assessment

Green synthesis of a disordered N-doped carbonaceous aerogel from waste for the removal of over-the-counter drugs and environmental assessment

Constructing a Hierarchical Hydrophilic Crosslink Network on the Surface of a Polyvinylidene Fluoride Membrane for Efficient Oil/Water Emulsion Separation

Effect of Molecular Weight and Chemical Structure of Terminal Groups on the Properties of Porous Hollow Fiber Polysulfone Membranes

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