Abstract
The advancement of 3D printing in the past few decades propelled many ground-breaking developments in the water treatment industry. More specifically, 3D printing has the unique advantage of prototyping parts of high complexity with acute precision within a short period of time. Innovative feed spacers and membranes, which could not be fabricated using conventional methods, can now be 3D printed and evaluated in actual filtration experiments. However, there are still limitations to 3D printing such as the printing resolution, build volume and printing speed which poses some problems, especially in the fabrication of membranes. This paper presents a comprehensive and critical discussion on the 3D printed feed spacer and membrane prototypes from a 3D printing perspective.
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