C. P Ukpaka
- Professor Rivers State University, Port Harcourt, Nigeria.
Abstract
This work details the procedure for curve fitting the Monod and Haldane’s growth models in for solid suspended media such as food waste; in order to determine their parameters for solid suspended media such as food waste. Seven different batch runs; each with initial substrate concentration were studied at constant temperature. A modified method was used to quantify the mass of microbes during the rection process and data obtained were used to curve fit the Monod’s and Haldane’s growth rate models using Python. The results showed that the Haldane’s model better describes the bacteria growth than the Monod’s as indicated by the value of their coefficient of correlation. This result confirms that bacteria growth in complex substrate such as food waste experience some inhibition and deviates from the Monod postulate. It was concluded that the Monod’s model cannot be used to describe the growth rate of bacteria during anaerobic digestion of food waste and by extension, other solid suspended media. However, due to the exhibition of multiple steady state concentration by the Haldane growth model, the Monod’s model is still very much handy for preliminary studies.
Keywords: Monod’s model, Microbial growth rate, curve fitting, parametrization of Monod’s model, solid suspended media.
[This article belongs to Journal of Thin Films, Coating Science Technology & Application(jotcsta)]
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Journal of Thin Films, Coating Science Technology & Application
| Volume | 11 |
| Issue | 01 |
| Received | April 3, 2024 |
| Accepted | May 21, 2024 |
| Published | June 15, 2024 |