Preparation of a Zirconia-Based Ceramic Membrane and Its Application for Drinking Water Treatment

Boussemghoune, Mohamed; Chikhi, Mustapha; Balaska, Fouzia; Özay, Yasin; Dizge, Nadir; Kebabi, Brahim

doi:10.3390/sym12060933

Cited by 23 publications

(8 citation statements)

References 37 publications

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“…The permeability of the plant-based membrane reached 580 L/m 2 hbar, and the membrane resistance coefficient was 5.8×10 11 m -1 . Similar results were obtained in previous studies (47,48). The linearity between the pressure and the water flux is shown in equation 1, and Fig.…”

Section: Plant-based Membrane Permeability For Distilled Watersupporting

confidence: 90%

The Use of Verbascum Thapsus L as a Biomembrane for Activated Sludge Filtration

Saleh

Arslan

Işık

et al. 2021

Avicenna J Environ Health Eng

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Membrane technology is a green technology, but it still faces a pressing problem related to the effect of fabrication materials on the environment. The plant Verbascum thapsus L (VTL) was utilized as a biomembrane to reduce chemicals. In this study, VTL was successfully utilized as a membrane for activated sludge separation. The membrane was characterized via scanning electron microscopy (SEM)-EDX, Fourier transform infrared (FTIR), and contact angle measurement. Additionally, the effects of pressures on the fluxes and the rejection ability were studied. The permeability of the bio-based membrane reached 581 L/m2 .h.bar. The VTL membrane was examined for the removal of chemical oxygen demand (COD), protein, and carbohydrate. Accordingly, the maximum COD removal was obtained at a transmembrane pressure of 2.5 bar and reached up to 57%. The protein and carbohydrates rejections raised from 80% and 84% at 0.5 bar to 90% and 98% at 2.5 bar, respectively. The total resistance increased from 87% at a pressure of 0.5 bar to 96% at 2.5 bar. The flux recovery ratio (FRR) for the membrane at working pressures (0.5-2.5 bar) was 96% for 0.5 bar and 70% for 2.5 bar. The physical cleaning showed a flux recovery after three operation cycles. At the end of the filtration experiments, the pressure variation along streamlines over the membrane cross-section was simulated. As a result of this study, the use of a naturally-derived membrane is considered a green technology. The plant-based membrane reduces the use of non-green chemicals. Moreover, VTL has no commercial value and is recognized as an invasive plant species. All of the previous issues made the study worthwhile.

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Section: Plant-based Membrane Permeability For Distilled Watersupporting

confidence: 90%

The Use of Verbascum Thapsus L as a Biomembrane for Activated Sludge Filtration

Saleh

Arslan

Işık

et al. 2021

Avicenna J Environ Health Eng

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“…Commercial membranes are modified by hydrophobization for use in separation processes. This effect would also be possible by covering them with a layer of graphene [ 35 , 36 , 37 ]. Oxygen plasma [ 38 ], argon etching [ 39 ], low-temperature H 2 , N 2 , and O 2 plasma [ 40 ] were proven to be effective in improving the hydrophilic properties of the ceramic surface, and thus facilitating the transfer of graphene.…”

Section: Introductionmentioning

confidence: 99%

Impact of Physical and Chemical Modification of the Surface of Porous Al2O3 Ceramic Membranes on the Quality of Transferred HSMG® and CVD Graphene

et al. 2023

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Graphene transfer onto ceramics, like Si/SiO2, is well-developed and described in the literature. However, it is problematic for other ceramic materials (e.g., Al2O3 and ZrO2), especially porous ones. In this case, it is mainly due to poor adhesion to the substrate, resulting in strong degradation of the graphene. For these reasons, the research topic of this study was undertaken. This article presents research on the development of the methodology of graphene transfer onto ceramic Al2O3 surfaces. Polycrystalline graphene chemical vapour deposition (CVD) monolayer and quasimonocrystalline high-strength metallurgical graphene (HSMG®) synthesised on liquid copper were used. When developing the transfer methodology, the focus was on solving the problem of graphene adhesion to the surface of this type of ceramic, and thus reducing the degree of graphene deterioration at the stage of producing a ceramic–graphene composite, which stands in the way of its practical use. Plasma and chemical ceramic surface modification were applied to change its hydrophobicity, and thus to improve the adhesion between the graphene and ceramic. The modification included the use of dielectric barrier discharge (DBD) plasma, oxygen plasma (RF PACVD method - Radio Frequency Plasma Assisted Chemical Vapour Deposition), and hydrofluoric acid treatment. Changes in surface properties caused by the modifications were determined by measuring the contact angle and (in the case of chemical modification) measuring the degree of surface development. The effectiveness of the applied surface preparation methodology was evaluated based on the damage degree of CVD and HSMG® graphene layer transferred onto modified Al2O3 using optical microscopy and Raman spectroscopy. The best average ID/IG ratio for the transferred HSMG® graphene was obtained after oxygen plasma modification (0.63 ± 0.18) and for CVD, graphene DBD plasma was the most appropriate method (0.17 ± 0.09). The total area of graphene defects after transfer to Al2O3 was the smallest for HSMG® graphene after modification with O2 plasma (0.251 mm2/cm2), and for CVD graphene after surface modification with DBD plasma (0.083 mm2/cm2).

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“…PVA contributed to improving the thermo-mechanical properties of a blend film consisting of various polymers, while maintaining its optical transparency. Additionally, various polymeric materials containing PVA can be applied not only as blends but also as substitutes for other polymer materials in special fields with high functionality [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property

et al. 2021

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4,4′-(4,4′-isopropylidenediphenoxy)bis(phthalic anhydride) (BPADA) as a dianhydride and bis(3-aminophenyl) sulfone (APS) and bis(3-amino-4-hydroxyphenyl) sulfone (APS-OH) as diamines were used to synthesize two types of poly(amic acid) (PAA). Varying amounts (0–5.0 wt%) of water-soluble poly(vinyl alcohol) (PVA) were mixed with PAA, and the resulting blend was heat-treated at different stages to obtain the colorless and transparent polyimide (CPI) blend films. The synthesized blended film completely removed water-soluble PVA in water. The possibility as a porous membrane according to the pore size varied according to the amount of PVA was investigated. The dispersibility and compatibility of CPI containing APS-OH monomer were higher than those of the APS monomer. This could be attributed to the hydrogen-bonding interactions between the CPI main chains and PVA. Scanning electron microscopy was conducted to characterize the material. The results revealed that the pore size of the CPI blend film increased as the PVA concentration increased. It was confirmed that uniform pores of μm-size were observed in CPI. The thermal stabilities, morphologies, optical properties, and solubilities of two CPIs obtained using APS and APS-OH monomers were investigated and their properties were compared with each other.

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Preparation of a Zirconia-Based Ceramic Membrane and Its Application for Drinking Water Treatment

Cited by 23 publications

References 37 publications

The Use of Verbascum Thapsus L as a Biomembrane for Activated Sludge Filtration

The Use of Verbascum Thapsus L as a Biomembrane for Activated Sludge Filtration

Impact of Physical and Chemical Modification of the Surface of Porous Al2O3 Ceramic Membranes on the Quality of Transferred HSMG® and CVD Graphene

Colorless and Transparent Polyimide Microporous Film with Excellent Physicochemical Property

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