The main objective of this work is to study the effect of pore size and porosity on contact angle of ceramic membrane (CM) for Oil-in-water (O/W) emulsion separation. This would include using commercially produced unmodified CM pore size 6000nm and 15nm. The Archimedes equation is used to measure the overall porosity of 6000 and 15nm pore size ceramic membranes and the porosity of the interconnecting pores. Subsequently, the contact angle for the ceramic membranes is measured using Attention Theta Lite Optical Tensiometer to test for the hydrophilicity. The average contact angle of 6000 and 15nm CM over a 20 second period at 50 frames per seconds (FPS) were 67.70 and 76.60 respectively. The porosity of CM1 (6000nm) and CM2 (15nm) were 23 and 21% respectively. From the Porosity and contact angle result, it is observed that porosity and pore size have influence of contact angle or hydrophilicity of a CM. the higher the pore size and porosity of a CM, the higher the hydrophilicity of the CM. This means contact angle of a higher porosity and pore size CM is expected to be closer to zero degree in contact angle. The proximity of contact angle results of CM 1 and 2 considering pore size might be due to dead end pores in CM1 (6000nm) which constitute 95% of pores making up the CM1 reducing porosity.
AISUENI, F., ABUNUMAH, O., HASHIM, I., RAMALAN, M., OGOUN, E., PRABHU, R., GIWA, A. and GOBINA, E. 2022. Effect of pore size and porosity on contact angle of ceramic membrane for oil-in-water emulsion separation. In Techconnect briefs 2022: papers from 2022 TechConnect world innovation conference and expo, 13-15 June 2022, Washington, USA. Danville: TechConnect [online], pages 59-62. Available from: https://briefs.techconnect.org/wp-content/volumes/TCB2022/pdf/174.pdf