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Kinetics simulations for thermophilic biogas production data from market wastes co-digested with rumen matter
1 Luis Environmental Care Ltd, P.O. BOX 14627-00100, Nairobi, Kenya.
2 Department of Chemistry, University of Nairobi, P.O. Box 30197-00100, Nairobi, Kenya.
3 Department of Physical Science, South Eastern Kenya University, P.O. Box 170-90200 Kitui, Kenya.
Research Article
International Journal of Science and Research Archive, 2023, 09(02), 926–934.
Article DOI: 10.30574/ijsra.2023.9.2.0661
Publication history:
Received on 04 July 2023; revised on 22 August 2023; accepted on 25 August 2023
Abstract:
This study reports simulation of cumulative biogas production data from thermophilic digester loaded with mixed fruit and vegetable wastes co-digested with slaughterhouse wastes at 55 ℃ and 6.8 -7.2 operation temperature and pH respectively. The experimental data was fitted to the linear, exponential, Gaussian, logistic and modified Gompertz kinetic models.
The results obtained showed that biogas generation rate was slow at the lag phase with exponential increment thereafter. The maximum generated biogas was 33100 mL on day 25 with the yield showing a decrease henceforth. The ascending limb data modeling fitted best in the modified Gompertz model with regression values of 0.998 compared to the 0.8909, 0.9025, 0.9899 and 0.9860 for linear, exponential, Gaussian and logistic models respectively.
Keywords:
Anaerobic Digestions; Biogas; Kinetics; Gompertz model; Simulation
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Copyright © 2023 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0
