Ecology, Environment and Conservation Paper

MICROBIAL ENHANCED OIL RECOVERY (MEOR) USING ULTRA SONIC WAVE

Yuliani, Bambang Yudono, Eddy Ibrahim and Hary Widjajanti

Abstract

Microbial Enhanced Oil Recovery is a technology to increase petroleum recovery using biosurfactants as a result of bacterial metabolites. The purpose of this study was to examine the effect of ultrasonic waves, NaCl concentration, and pH on recovered oil yield. Ultrasonic waves were emitted for 1-5 minutes (SKU 929154620, 20 kHz) with 1-5% NaCl concentrations at pH 5.5, 6, 6.5, and 7. The highest recovered oil yield reached 80.37% using Pseudomonas peli with NaCl 6% without pH variation for 3 minutes of ultrasonic transmission. These findings reveal that ultrasonic waves and NaCl concentrations have a major effect in increasing the recovery of petroleum using bacteria.