Zirconia ultrafiltration membranes on silicon carbide substrate: microstructure and water flux

Li, Shuang; Wei, Chuncheng; Wang, Peng; Gao, Peiling; Zhou, Lijuan; Wen, Guangwu

doi:10.1016/j.jeurceramsoc.2020.04.020

Cited by 24 publications

(5 citation statements)

References 37 publications

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“…The water permeation study of the porous SiC membrane in this work is compared with literature data as summarized in Table 4. [28][29][30]32,[49][50][51] The results of this work are comparable to or even better than literature data. However, based on the operating parameters performance of the membrane at best optimum operating conditions need to be evaluated.…”

Section: Permeation Characteristics Of the Membranessupporting

confidence: 86%

“…The pure water‐specific permeability (SP) value of the membrane prepared without pore former MSC2 was found to be 3690 Lm −2 h −1 bar −1 which was increased to 5165 and 6560 Lm −2 h −1 bar −1 respectively with increase of porosity of the membrane by the addition of 10 and 20% graphite powder. The water permeation study of the porous SiC membrane in this work is compared with literature data as summarized in Table 4 28–30,32,49–51 . The results of this work are comparable to or even better than literature data.…”

Section: Resultssupporting

confidence: 58%

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Influence of additive contents on the properties of SiC ceramic membranes and their performance in oil‐water separation

Das

Kayal

2023

Int J Applied Ceramic Tech

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The high processing cost is the key challenge for the economic industrial use of SiC membrane The aim of this research was to fabricate mullite bonded porous SiC ceramic membrane at low temperature from novel combinations of fly ash and alumina (FA) in weight ratio 44.5:55.5 as sintering additives. The influences of FA and pore former content on the porosity, morphology, crystalline phase composition, mechanical performance, permeability properties were investigated. The membrane prepared at 1300 • C using 20 wt% FA showed pure water permeability 3690 Lm −2 h −1 bar −1 and exhibited high oil removal efficiency of ∼ 98% from the synthetic oil-water emulsion having oil concentration of 1000 mg/L. The corrosion behaviour of silicon carbide membrane in the strong acid and alkali solution and its mechanism were investigated. The utilization of fly ash successfully reduced the raw material cost and sintering temperature and the use of alumina reduced the amount of oxidation of SiC as well as increased the amount of mullite bond phase which resulted excellent mechanical strength to the final ceramics.

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Section: Permeation Characteristics Of the Membranessupporting

confidence: 86%

Section: Resultssupporting

confidence: 58%

Influence of additive contents on the properties of SiC ceramic membranes and their performance in oil‐water separation

Das

Kayal

2023

Int J Applied Ceramic Tech

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“…On the contrary, good chemical, thermal, and mechanical stability, long working lifespan, and low fouling tendencies of ceramic membranes make them ideal for several water and wastewater treatment applications, which cannot be operated efficiently by the polymeric membranes [ 3 , 4 , 5 ]. In this context, silicon carbide (SiC) membranes have gained special attention as an attractive porous material among the other ceramic membranes such as alumina [ 6 ], titania [ 7 ], and zirconia [ 8 ]. The main advantages of SiC membranes are directly related with to their outstanding chemical, thermal, and mechanical properties under harsh conditions and high flux.…”

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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“…Figure 5b shows the mechanical strength of the fracture surface perpendicular to the channels, which is the main consideration in submerged membrane bioreactors. 36 With the increase in sintering temperature from 1100 to 1400 °C, the flexural strength of the ceramic supports gradually increased from 50 to 110 MPa. According to the evolution in microstructure, the increase in flexural strength was mainly attributed to the enhanced interface area and therefore strong intergrain bond, and the slightly reduced porosity.…”

Section: Resultsmentioning

confidence: 99%

“…Figure b shows the mechanical strength of the fracture surface perpendicular to the channels, which is the main consideration in submerged membrane bioreactors . With the increase in sintering temperature from 1100 to 1400 °C, the flexural strength of the ceramic supports gradually increased from 50 to 110 MPa.…”

Section: Resultsmentioning

confidence: 99%

Overcoming the Trade-off between Water Permeation and Mechanical Strength of Ceramic Membrane Supports by Interfacial Engineering

Kotobuki

Kirk

et al. 2021

ACS Appl. Mater. Interfaces

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Porous ceramic membrane supports with high mechanical strength and permeation are required for highly permeable ceramic membranes. The water permeation of a ceramic membrane support is largely dependent on its level of open porosity, which can be however generally detrimental to the mechanical strength. In this work, low-cost kaolin nanoflakes were rationally composited with coarse alumina particles, and multichannel flat-sheet ceramic supports were successfully fabricated by extrusion and subsequent partial sintering. The macroscopic properties, microstructure characteristics, permeability, and mechanical strength of the ceramic membrane supports were systematically established and comprehensively studied. The incorporation of kaolin nanoflakes effectively reduced the sintering temperature to about 1200 °C. An interesting evolution of the pore structure was evidenced with the increase in sintering temperature. Interestingly, the porous ceramic supports prepared at 1400 °C with a nominal pore size of 1.47 μm showed the highest water permeability of 9911.9 ± 357.5 LMHB, and at the same time the flexural strength reached 109.6 ± 4.6 MPa. The much improved permeability was attributed to the unique multilevel pore structures, and the enhanced flexural strength mainly originated from the strongly interfacial bonding, as evidenced by the trans-granular fracture behavior. Also, the ceramic membrane supports exhibited excellent chemical resistance and good removal efficiency for oily wastewater. This work highlights the significant role of interfacial engineering in simultaneously improving the water permeation and mechanical strength, thereby overcoming their trade-off in porous ceramic membrane supports.

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Zirconia ultrafiltration membranes on silicon carbide substrate: microstructure and water flux

Cited by 24 publications

References 37 publications

Influence of additive contents on the properties of SiC ceramic membranes and their performance in oil‐water separation

Influence of additive contents on the properties of SiC ceramic membranes and their performance in oil‐water separation

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

Overcoming the Trade-off between Water Permeation and Mechanical Strength of Ceramic Membrane Supports by Interfacial Engineering

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