International journal of Thermodynamics and Chemical Kinetics
Heat Generated Simulation with Bacteria and Fungi inCrude Oil Remediation in an Aerated Lagoon
1Professor, Department of Chemical/Petrochemical Engineering,
Rivers State University, Port Harcourt, Rivers State, Nigeria
2Research Student, Department of Industrial Engineering,
College of Engineering, Computer Studies and Architecture,
Lyceum of the Philippines University, Cavite, Philippines
3Research Student, Department of Pharmacy, MSB Medical
School Berlin GmbH - Hochschule für Gesundheit und Medizin
4Research Student, Department of Computer Engineering,
College of Engineering, Computer Studies and Architecture,
Lyceum of the Philippines University, Cavite, Philippines
5Lecturer II, Department of Chemical/Petrochemical Engineering,
Rivers State University, Port Harcourt, Rivers State, Nigeria
Abstract
Studies on the heat generated by bacteria and fungi in an aerated lagoon were monitored by the
application of MATLAB computed software simulation. Mathematical models were developed in terms
of substrate utilization by microbes and correlated with the Monod’s equation model which revealed
the trend of heat generated at different operating temperature of 15°C, 30°C, 45°C, 60°C, 75°C, 90°C,
105°C and 120°C. The heat generated varies with increase in the microbial concentration as favored
by the growth rate in relationship the microorganisms as in the area of mesophilic, thermophilic and
super thermophilic. The heat generated by bacteria and fungi in an aerated lagoon was observed to
have been influenced by the operating temperature of the bioreactor set-up. Research demonstrates that
low operating temperatures of 15°C and 30°C the role of bacteria and fungi was significant in terms of
heat generated and at operating temperature of above 30oC the contribution of temperature influences
the heat generated in an aerated lagoon. The degradation of the crude oil in this case is not only based
on the biodegradation rather than both thermal degradation as well as biodegradation process
occurred simultaneously. The increase in the operating temperature inhibits the active site of the
mesophilic organisms at temperature above 45°C, at temperature of above 75°C the thermophilic
organisms were also inhibited as well as at temperature of 120°C the organisms identified as super
thermophilic was inhibited showing control of heat generated being influenced by the operating
temperature of the system.
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