Abstract
This article aims to explain the process of bioremediation of waste oils and found the rate of reaction kinetics model microbes. Samples were taken from liquid waste petroleum oil and gas companies Prabumulih South Sumatra, Indonesia. The isolation process using a medium Zobell’s and produces ten types of bacteria from the group Citrobacter sp, Micrococcaceaekarbon, and Flavobacterium sp. These bacteria’s is used in wastewater treatment bioreactor which have characteristic as follow: operate semi-continuously, using aeration column that contain polyurethane foam, variation of air discharge is 2 and 6 ml/sec, volume waste variation is 5 and 10 liters, 10 liters’ isolate, KNO3 (640 gram) and K2HPO4 (10 gram) as nutrition. The results showed that when bioremediation process contains 10 liters’ liquid waste, 10 liters’ isolate, and 6 ml/sec air discharge, it can reduce pH, specific gravity, BOD level, and the final weight of waste. Remediation process also increases the number of microbes, fatty oils and DO. Microbial maximum productivity is 59.50 with saturated concentration (Ks) at 3.25, and its slope is 0.43. Kinetics equation model following could be formulated as μ = 0.43/s/3.25+s.
Highlights
Indonesia is one of the oil producers and consumer’s country
Oil drilling activity has begun in the 1950s by Pertamina, a state-owned Indonesian government, until today
The existence of drilling activity and processing of crude oil have led to Prabumulih as a region which highly vulnerable to environmental pollution caused by wastewater
Summary
Indonesia is one of the oil producers and consumer’s country. In 2014, Indonesia’s oil production reached 289.878 million barrels[1]. The existence of drilling activity and processing of crude oil have led to Prabumulih as a region which highly vulnerable to environmental pollution caused by wastewater. The liquid waste can be derived from the residual drilling mud, oil droplets, and formation water This incident disrupts the activities of residents who mostly work as farmer’s rubber, but has the potential to worsen the quality of the environment. Bioremediation can be defined as a strategy, technique, methods, and approach to degrade pollutants and restore environmental quality using living organism, especially microorganism[3,4,5]. It is part of biotechnology which represents the convergence of biology, computer science, chemistry, physics, and engineering. This research is designed to contribute to the scientific discussion about bioremediation, especially in the sectors of petroleum wastewater treatment
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