Oily sand remediation concurrently with oil-in-water cleaning mechanisms using chemical-free microbubbles: A concept paper

The oil spillage incidents along the Malaysia coast show an increasing number in the last few years. Many technologies have been deployed in treating oil from seawater. However, the problem with oily-contaminated sands is still difficult to solve because it involves ultra-expensive cost and vigorous system. This study explains the concept of using chemical-free microbubbles in remediating the oily sand, simultaneously separating oil from an oil-in-water mixture. The microbubbles from the remediation system and oily water cleaning are generated using Air Jet Aerator (AJA) and Dissolved Air Flotation (DAF), respectively. The parameters are sand's weight, oil concentration, the washing medium, and the system's pressure. The analyses are TDS, TSS, and COD level. Based on preliminary results conducted for DAF, it shows that the hydrocarbon removal efficiency was found to be 81%.