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2024
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07
Industry New Knowledge | Using 3D Printing to Build Corrugated Surface Anti-fouling Tubular Ceramic Membrane
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Industry new knowledge
Recently, a team led by Zhong, Zhaoxiang of Nanjing University of Technology, published a research entitled Construction of anti-fouling ceramic tubular membranes with corrugated inner surfaces using DLP 3D Journal in printing of Membrane Science. Ceramic microfiltration membrane with corrugated pattern was prepared by 3D printing combined with dip coating process.
Original link: https://www.sciencedirect.com/science/article/abs/pii/S0376738824005350
Adventure Technology official website: http://www.adventuretech.cn/
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research content
Ceramic membrane (ceramic membrane), also known as inorganic ceramic membrane, is an asymmetric membrane formed by special process preparation of inorganic ceramic materials. The membrane separation process relies on advanced membrane materials. Due to its high separation efficiency, low energy consumption, simple operation, and good ecological compatibility, it has been widely used in water treatment, resource management and environmental protection. however,Membrane fouling is a long-standing challenge in the field.
This paper adoptsDLP 3D printing and dip coating technologyTubular ceramic membranes with patterned inner surfaces were constructed and systematically evaluated for their antifouling properties when filtering nanoparticle suspensions, water-in-oil emulsions, and bacterial suspensions. The study provides data on the effectiveness of surface patterning in enhancing the antifouling properties of ceramic membranes by comparing patterned and unpatterned membranes.
△ Figure 1, process diagram of tubular ceramic stent.
△ Figure 2, Characteristic analysis of 3D printed ceramic support. (A) Photographs of green bodies with different exposure energies; (B) Appearance of sintered scaffolds and their cross-sectional FESEM images;(c) Pure water flux of ceramic scaffolds;(d) Pore size distribution of ceramic scaffolds.
△ Fig. 3, Micromorphology study of ceramic microfiltration membrane. Surface: straight membrane tubes (a, B) and corrugated membrane tubes (c, d); cross section: straight membrane tubes (e, f) and corrugated membrane tubes (g-m).
4, Characterization of ceramic microfiltration membranes:(a) Pore size distribution; (B) Pure water flux and mass transfer resistance.
Delta Figure 5, Performance of ceramic membranes in filtration of cerium oxide nanoparticle suspensions under different conditions. (a, c, e) flux changes with time; (B, d, f) mass transfer resistance of filter cake layer after 120 min filtration;(c) relationship between filter cake volume and resistance;(d) apparent morphology of dry ceramic membrane with nanoparticles deposited on the surface.
6, Performance of ceramic membrane for filtration of cerium oxide nanoparticle suspension under different conditions. (A, c, e) The relationship between the amount of scones and their resistance; (B, d, f) The apparent morphology of nanoparticles deposited on the surface.
Figure 7, anti-fouling diagram of ceramic membrane on patterned surface and comparison with straight tube membrane.
8, Microstructure after H0.75 fracture toughness test:(A) Fracture and (B) Continuous carbon fiber bundle.
9, Performance of ceramic microfiltration membrane. (a) Filtration of isooctane/water emulsion; filtration of soybean oil/water emulsion (B); filtration of yeast suspension (c). The inserted subplots are the appearance and microscopic comparison of the feed and permeate.
10, Numerical simulation analysis of ceramic tubular membranes with these two configurations.
research conclusion
This article throughFabrication of patterned tubular ceramic microfiltration membrane by DLP 3D printing combined with dip coating process, Enhance the antifouling performance of the membrane. The patterned inner surface increases fluid turbulence, reduces contaminant deposition, and presents advantages when filtering nanoparticle suspensions, oil-in-water emulsions, and bacterial suspensions. As the nanoparticle concentration and pressure increase, the filtration flux of the corrugated membrane is better than that of the straight membrane. These findings provide important insights into the design and development of antifouling ceramic membranes.
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