APPLICATION OF KAOLIN-ZEOLITE CERAMIC FILTER MEMBRANE IN RECOVERING WASTE OIL INTO USABLE OIL

Muhammad Zaky, Alfian Putra, Cut Aja Rahmawati

Sari


Several membrane materials are continuously being developed to produce efficient and environmentally friendly filtration media. This study examines the application of kaolin-zeolite-based ceramic filter membranes in the process of refining used cooking oil into usable oil. The main materials used are kaolin, zeolite, and PVA as a binder. The variations in the kaolin:zeolite composition used are 50%:50%, 60%:40%, 70%:30%, 80%:20%, and 100%:0% with sintering times of 1, 2, and 3 hours at a temperature of 1000°C. Membrane characterization includes density, porosity, flux, morphology tests using a Scanning Electron Microscope (SEM), as well as the removal of Free Fatty Acids (FFA) in used cooking oil. The results showed that the composition of 50% kaolin and 50% zeolite with a sintering time of 3 hours produced the best performance with a density of 1.32 g/cm³, porosity of 56.00%, flux of 143.93 L/m².hour, and the removal capacity of ALB up to 70.6%, reducing the ALB content from 4.56% to 1.34% according to SNI standards. SEM analysis showed a macroporous structure (0.57–3.02 µm) that supports filtration, while the adsorptive properties of zeolite play a role in reducing polar compounds. These results prove that kaolin-zeolite ceramic membranes have the potential as an alternative technology in used cooking oil recovery.

 

Keywords: Ceramic Membrane, Kaolin, Zeolite, Sintering, Flux, Free Fatty Acid, SEM.


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Referensi


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DOI: http://dx.doi.org/10.30811/jstr.v23i02.8861

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