100 g of crude palm oil was weighed into six different 250 ml Conical flask and then accurately weight of the best synthesized ZnO /Kaolin Nano-composite adsorbent of different quantity (1, 2, 3, 4, and 5 g) were added into each flask and then placed on a hot plate magnetic stirrer. This was done at specified bleaching time and temperature of 30 minutes and 80 o C (Vincent Nwoye . At the completion of the time, the hot Oil -Clay mixture was filtered under gravity using Whatman filter paper No.42 (15 cm diameter), before measuring the absorbance.