Highly permeable silicon carbide-alumina ultrafiltration membranes for oil-in-water filtration produced with low-pressure chemical vapor deposition

Chen, Ming-Liang; Shang, Ran; Sberna, Paolo; Luiten-Olieman, Mieke W.J.; Rietveld, L.C.; Heijman, S.G.J.

doi:10.1016/j.seppur.2020.117496

Cited by 42 publications

(24 citation statements)

References 40 publications

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“…The choice of the right support material with well-defined characteristics helps to prepare good quality and reproducible SiC membranes. Porous supports used for fabrication of SiC membranes generally consist of alumina [ 11 , 12 ] or SiC [ 13 , 14 ]. Indeed, SiC is one of the most promising materials also as a membrane support, thanks to aforementioned superior properties.…”

Section: Introductionmentioning

confidence: 99%

Ceramic Processing of Silicon Carbide Membranes with the Aid of Aluminum Nitrate Nonahydrate: Preparation, Characterization, and Performance

2021

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The development of a low-cost and environmentally-friendly procedure for the fabrication of silicon carbide (SiC) membranes while achieving good membrane performance is an important goal, but still a big challenge. To address this challenge, herein, a colloidal coating suspension of sub-micron SiC powders was prepared in aqueous media by employing aluminum nitrate nonahydrate as a sintering additive and was used for the deposition of a novel SiC membrane layer onto a SiC tubular support by dip-coating. The sintering temperature influence on the structural morphology was studied. Adding aluminum nitrate nonahydrate reduced the sintering temperature of the as-prepared membrane compared to conventional SiC membrane synthesis. Surface morphology, pore size distribution, crystalline structure, and chemical and mechanical stability of the membrane were characterized. The membrane showed excellent corrosion resistance in acidic and basic medium for 30 days with no significant changes in membrane properties. The pure water permeance of the membrane was measured as 2252 L h−1 m−2 bar−1. Lastly, the final membrane with 0.35 µm mean pore size showed high removal of oil droplets (99.7%) in emulsified oil-in-water with outstanding permeability. Hence, the new SiC membrane is promising for several industrial applications in the field of wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Ceramic Processing of Silicon Carbide Membranes with the Aid of Aluminum Nitrate Nonahydrate: Preparation, Characterization, and Performance

2021

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“…Currently, most studies about ceramic membranes modification by the CVD process have focused on the tailoring of membrane pore size for applications in gas separation [88], fuel cells [89], and catalyst membrane reactors [90]. However, the application of CVD to fabricate highperformance ceramic membranes for water treatment, especially for O/W separation, has also been reported in the literature: silica [91], silicon carbide (SiC) [40] and carbon nanotubes [92] have been studied as a coating layer for ceramic membrane modification by means of CVD to increase oil rejection and/or improve membrane fouling resistance.…”

Section: Chemical Vapour Depositionmentioning

confidence: 99%

“…For O/W emulsions stabilized by surfactants, the surface charge of the membranes becomes important for feeds with a low salinity [39]. The membrane surface can then be modified to enhance the electrostatic repulsion between oil droplets and membrane surface [40]. In this way, oil droplets are less prone to be adsorbed on the surface or inside the pores.…”

Section: Introductionmentioning

confidence: 99%

State-of-the-Art Ceramic Membranes for Oily Wastewater Treatment: Modification and Application

2021

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Membrane filtration is considered to be one of the most promising methods for oily wastewater treatment. Because of their hydrophilic surface, ceramic membranes show less fouling compared with their polymeric counterparts. Membrane fouling, however, is an inevitable phenomenon in the filtration process, leading to higher energy consumption and a shorter lifetime of the membrane. It is therefore important to improve the fouling resistance of the ceramic membranes in oily wastewater treatment. In this review, we first focus on the various methods used for ceramic membrane modification, aiming for application in oily wastewater. Then, the performance of the modified ceramic membranes is discussed and compared. We found that, besides the traditional sol-gel and dip-coating methods, atomic layer deposition is promising for ceramic membrane modification in terms of the control of layer thickness, and pore size tuning. Enhanced surface hydrophilicity and surface charge are two of the most used strategies to improve the performance of ceramic membranes for oily wastewater treatment. Nano-sized metal oxides such as TiO2, ZrO2 and Fe2O3 and graphene oxide are considered to be the potential candidates for ceramic membrane modification for flux enhancement and fouling alleviation. The passive antifouling ceramic membranes, e.g., photocatalytic and electrified ceramic membranes, have shown some potential in fouling control, oil rejection and flux enhancement, but have their limitations.

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“…Currently, polymers are the leading candidate materials for membranes, but they possess a variety of limitations, such as low fluxes, a low mechanical strength, a proclivity to bio-fouling, and a restricted chemical and thermal stability [13]. In all applications, where the use of Sustainability 2021, 13, 7593 2 of 14 polymeric membranes is unsuitable and inapplicable, ceramics membranes are used due to their higher mechanical strength, superior thermal, chemical stability [14,15], corrosion resistance [16], and high-pressure resistance [17].…”

Section: Introductionmentioning

confidence: 99%

“…Alumina membranes also possess hydrophilic properties due to the presence of hydroxyl (OH) groups, which support water adsorption and prevent the growth of microorganisms on the membrane surface [25]. These properties make alumina a choice of material for microfiltration and ultrafiltration applications, including wastewater treatment [16], biotechnology, increasing the concentration of bio-macromolecules, protein separation [26], hydrogen separation [27], and food processing [28]. Alumina membranes can be fabricated by extrusion, slip casting, and powder pressing [29].…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Alumina Membranes for Sugar Industry: An Investigation of Sintering Parameters Influence onUltrafiltration Performance

et al. 2021

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Ultrafiltration membranes offer a progressive and efficient means to filter out various process fluids. The prime factor influencing ultrafiltration to a great extent is the porosity of the membranes employed. Regarding membrane development, alumina membranes are extensively studied due to their uniform porosity and mechanical strength. The present research work is specifically aimed towards the investigation of nanoporous alumina membranes, as a function of sintering parameters, on ultrafiltration performance. Alumina membranes are fabricated by sintering at various temperatures ranging from 1200–1300 °C for different holding times between 5–15 h. The morphological analysis, conducted using Scanning electron microscopy (SEM), revealed a homogeneous distribution of pores throughout the surface and cross-section of the membranes developed. It was observed that an increase in the sintering temperature and time resulted in a gradual decrease in the average pore size. A sample with an optimal pore size of 73.65 nm achieved after sintering at 1250 °C for 15 h, was used for the evaluation of ultrafiltration performance. However, the best mechanical strength and highest stress-bearing ability were exhibited by the sample sintered at 1300 °C for 5 h, whereas the sample sintered at 1250 °C for 5 h displayed the highest strain in terms of compression. The selected alumina membrane sample demonstrated excellent performance in the ultrafiltration of sugarcane juice, compared to the other process liquids.

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Highly permeable silicon carbide-alumina ultrafiltration membranes for oil-in-water filtration produced with low-pressure chemical vapor deposition

Cited by 42 publications

References 40 publications

Ceramic Processing of Silicon Carbide Membranes with the Aid of Aluminum Nitrate Nonahydrate: Preparation, Characterization, and Performance

Ceramic Processing of Silicon Carbide Membranes with the Aid of Aluminum Nitrate Nonahydrate: Preparation, Characterization, and Performance

State-of-the-Art Ceramic Membranes for Oily Wastewater Treatment: Modification and Application

Nanoporous Alumina Membranes for Sugar Industry: An Investigation of Sintering Parameters Influence onUltrafiltration Performance

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