Preparation of alumina membranes comprising a thin separation layer and a support with straight open pores for water desalination

Gu, Jianqiang; Ren, Chunlei; Zong, Xu; Chen, Chusheng; Winnubst, Louis

doi:10.1016/j.ceramint.2016.04.183

Cited by 51 publications

(16 citation statements)

References 25 publications

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“…Gu et al investigated the effect of sweep gas flow rate on the permeate flux with SGMD and the authors observed that the permeate flux through the membrane increased when increasing the sweep gas flow rate due to a higher driving force for MD . The effect of vacuum pressure in VMD was also reported in the literature.…”

Section: Overview Of Ceramic Membranes Applied To MDsupporting

confidence: 70%

“…Many authors reported that feed temperature showed a remarkable influence on the permeate flux with ceramic membranes applied to MD, regardless of configuration and feed solution. This propensity is explained by the Antoine equation, which predicts an exponential relationship between the vapor pressure difference and temperature due to the higher latent heat of water evaporation and higher heat transfer coefficient, without affecting the permeate quality.…”

Section: Overview Of Ceramic Membranes Applied To MDmentioning

confidence: 99%

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Ceramic membranes applied to membrane distillation: A comprehensive review

Ramlow

Ferreira

Marangoni

et al. 2019

Int J Applied Ceramic Tech

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Membrane distillation (MD) has been increasingly studied in the past decade for its potential as a separation process of nonvolatile components. The present study demonstrates a comprehensive overview of the current progress and challenges in the application of ceramic membranes to MD based on the available state of the art.There are already published review papers about MD, but the present study focuses on ceramic membranes, which are still the few used in MD when compared to polymeric membranes. Significant issues such as membrane material, module, characteristics, and hydrophobic modification are discussed. The main operating conditions and their effects on the separation process are given. Current applications of ceramic membranes in MD are also presented. Likewise, challenges and future perspectives associated with MD performance using ceramic membranes are highlighted.A review focused on ceramic membranes applied specifically to MD will contribute for future research in order that this process achieves successful implementation in industry. K E Y W O R D Sapplications, grafting, permeability, properties, surface modification 2162 | RAMLOW et AL.

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Section: Overview Of Ceramic Membranes Applied To MDsupporting

confidence: 70%

Section: Overview Of Ceramic Membranes Applied To MDmentioning

confidence: 99%

Ceramic membranes applied to membrane distillation: A comprehensive review

Ramlow

Ferreira

Marangoni

et al. 2019

Int J Applied Ceramic Tech

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show abstract

“…Therefore, there have been many studies of membrane distillation (MD) processes in the last two decades [6][7][8]. MD is frequently used for seawater desalination due to the easy driving force of slight temperature differences [6,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Increasing the Performance of Vacuum Membrane Distillation Using Micro-Structured Hydrophobic Aluminum Hollow Fiber Membranes

Chen

et al. 2017

Applied Sciences

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This study develops a micro-structured hydrophobic alumina hollow fiber with a high permeate flux of 60 Lm −2 h −1 and salt rejection over 99.9% in a vacuum membrane distillation process. The fiber is fabricated by phase inversion and sintering, and then modified with fluoroalkylsilanes to render it hydrophobic. The influence of the sintering temperature and feeding temperature in membrane distillation (MD) on the characteristics of the fiber and MD performance are investigated. The vacuum membrane distillation uses 3.5 wt % NaCl aqueous solution at 70 °C at 0.03 bar. The permeate flux of 60 Lm −2 h −1 is the highest, compared with reported data and is higher than that for polymeric hollow fiber membranes.

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“…Tape‐casting is a well‐established technique, whereby flat ceramics with tailored thickness can be produced . It was used originally to fabricate dense ceramic substrates, but nowadays, it is generally applied to fabricate porous ceramic membranes via its combination with other pore forming methods, such as sacrificial template, partial sintering, phase inversion, and freeze drying . Still, sacrificial template method inevitably gives serious cause for concern about environmental pollution, partial sintering method intrinsically presents difficulties in developing high porosity, and phase inversion and freeze drying methods are generally complex processes for membrane fabrication.…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of durable self‐cleaning and engineering porous Al₂O₃/CaAl₁₂O₁₉ ceramic membranes

et al. 2019

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The rapid development of engineering filtering process suggests that it is imperative to produce membrane substrates with a fine pore size, high gas permeation, and antifouling properties for efficient and long-term application. This study reports on a novel fabrication method of a porous Al 2 O 3 /CaAl 12 O 19 ceramic membrane substrate by a direct foaming method combined with cement solidification and tape-casting technology. The microstructure of the produced ceramic membrane consisted of pores with a size of 50-150 μm, which were interconnected with each other with a large number of small filtering functional pores of <10 μm. By increasing the amount of the foaming agent, the porosity of the porous Al 2 O 3 /CaAl 12 O 19 ceramic membranes was tailored from 64.8% to 80.5%, and the bending strength decreased from 32.1 ± 1.0 to 9.6 ± 0.9 MPa, respectively. The sintered hydrophilic ceramic substrate was successfully modified to a hydrophobic one (with water contact angles of 143°) by pyrolysis of dimethyldichlorosilane and dichloromethylsilane. The resultant membrane displayed high chemical stability and self-cleaning features. The membrane with a porosity of 64.8% had a N 2 permeation of 3.0 (±0.5) × 10 7 L m −2 h −1 at 0.5 bar and a water flux which could be totally suppressed at a liquid entry pressure of 0.45 bar.

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Preparation of alumina membranes comprising a thin separation layer and a support with straight open pores for water desalination

Cited by 51 publications

References 25 publications

Ceramic membranes applied to membrane distillation: A comprehensive review

Ceramic membranes applied to membrane distillation: A comprehensive review

Increasing the Performance of Vacuum Membrane Distillation Using Micro-Structured Hydrophobic Aluminum Hollow Fiber Membranes

Production and characterization of durable self‐cleaning and engineering porous Al₂O₃/CaAl₁₂O₁₉ ceramic membranes

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Preparation of alumina membranes comprising a thin separation layer and a support with straight open pores for water desalination

Cited by 51 publications

References 25 publications

Ceramic membranes applied to membrane distillation: A comprehensive review

Ceramic membranes applied to membrane distillation: A comprehensive review

Increasing the Performance of Vacuum Membrane Distillation Using Micro-Structured Hydrophobic Aluminum Hollow Fiber Membranes

Production and characterization of durable self‐cleaning and engineering porous Al2O3/CaAl12O19 ceramic membranes

Contact Info

Product

Resources

About

Production and characterization of durable self‐cleaning and engineering porous Al₂O₃/CaAl₁₂O₁₉ ceramic membranes