3D-printed ceramic structures with in situ grown whiskers for effective oil/water separation

Chen, Zhe; Zhang, Danwei; Peng, Erwin; Ding, Jun

doi:10.1016/j.cej.2019.05.150

Cited by 63 publications

(43 citation statements)

References 46 publications

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“…41,42 Because of the intrinsic hydrophilic character-istics, macroporous ceramic membrane supports can be directly adopted to remove the oil phase in oily wastewater. 43 On the basis of the desired features, such as the uniform surface pores and holey interior structure, the ceramic membrane supports prepared at 1400 °C were used to treat the synthetic oily wastewater samples with different concentrations. As plotted in Figure 7a, the removal efficiency was 75%, 80%, and 50% for the oily wastewater of 100, 200, and 300 ppm, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Treatment of oily wastewater is commonly required in oilfields and chemical processes. , Because of the intrinsic hydrophilic characteristics, macroporous ceramic membrane supports can be directly adopted to remove the oil phase in oily wastewater . On the basis of the desired features, such as the uniform surface pores and holey interior structure, the ceramic membrane supports prepared at 1400 °C were used to treat the synthetic oily wastewater samples with different concentrations.…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

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

View full text Add to dashboard Cite

show abstract

“…In this situation, a ceramic-based material would be ideal. This inspired Chen et al [62] to develop a 3D-printed ceramic-based (alumina) water-oil separation material functionalized on the surface with aluminium borate whiskers. The oil-water separation efficiency was >99% while maintaining high flowrate.…”

Section: Sorbents/substrates For Oil-water Separationmentioning

confidence: 99%

3D printing for membrane separation, desalination and water treatment

Tijing

Dizon

Ibrahim

et al. 2020

Applied Materials Today

153

121

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“…The proposed substrates have superior oil/water separation efficiency (>99%) and an elevated flow rate. [ 57 ] Besides, the highly efficient filtration meshes (Figure 3d) fabricated through the direct ink writing (DIW) technique are used for oil/water separation applications, which achieved a high separation efficiency (>95%). [ 58 ] Similarly, the separation of multiphase liquid mixtures (e.g., immiscible organic liquid mixtures and oil/water combinations) was aided by strong candle soot functionalized polyamide‐12 membrane (Figure 3e).…”

Section: Environmental Applications Of 3d Printingmentioning

confidence: 99%