Volume 20, Issue 53, January - June, 2023

Modelling the effect of moringa seed shell on crude oil polluted soils for remediation purposes

Uku Eruni Philip¹, Ekperi Nelson Ibezim²

¹Lecture, Chemical Engineering Department, Federal University, Otuoke, Bayelsa State, Nigeria
²PhD Researcher, Chemical/Petrochemical Department, Rivers State University, Port Harcourt, Rivers State, Nigeria

ABSTRACT

The results obtained were utilized to calculate the highest specific rates, the disassociation constant and the kinetic values in terms of first and second order kinetics. The use of the Lineweaver Buck plot was taken into consideration for the different reactors and the maximum specific rate of substrate degradation and disassociation constant were evaluated and determined for both the powdered forms of the moringa seed shell, in the Loamy soil. According to the research, crude oil degraded more quickly in reactors that contained a mixture of yeast, NPK and powdered swamp soil (moringa oleifera) from moringa seeds. The total number of bacteria rose in all of the treatment reactors, with the fastest growth rate occurring at 56 days (during the progressive or exponential phase), before each reactor reached its full substrate (crude oil) usage capacity and entered the stationary and decline phases. In the model evaluation, the Michalis-Menten model's correlation coefficient values (R2) were greater than those of the first and second order degradation rate models. Therefore, the first order degradation rate R2 value ranges are from 0.9063 to 0.9894, the second order degradation rate ranges from 0.8004 to 0.9396 and the Michalis-Menten Equation ranges from 0.9639 to 0.9979. So, compared to the first and second order degradation rate models, the Michalis-Menten Equation provided a more accurate prediction of the residual TPH.

Keywords: Modelling, moringa seed, remediation, uku, soil, ekperi, clean up

Indian Journal of Engineering, 2023, 20(53), e19ije1647

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DOI: https://doi.org/10.54905/disssi/v20i53/e19ije1647

Published: 05 June 2023