Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung)

Akpa Jackson Gunorubon; Igbagara Princewill Woyinbrakemi; Adeloye Olalekan Michael

doi:doi:10.11648/j.cbe.20210603.12

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Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung)

Akpa Jackson Gunorubon, Igbagara Princewill Woyinbrakemi, Adeloye Olalekan Michael

Published in Chemical and Biomolecular Engineering (Volume 6, Issue 3)

Received: 3 August 2021 Accepted: 16 August 2021 Published: 6 September 2021

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Abstract

A laboratory scale anaerobic digester unit was setup and applied for biogas production from cow dung. Anaerobic digestion was conducted at 35°C and observed for a retention period of fifty days. The ambient and slurry temperatures, pH of slurry and amount of biogas produced were measured on a four-day interval basis. The experimental data obtained were used for kinetic studies by fitting the data to known kinetic models such as Linear, Exponential, Gaussian, Logistics and Modified Gompertz. The constants in these models were determined by linear regression using the Matlab curve fitting tool box. A reactor model for the bioreactor was also developed. The experimental results showed biogas production occurred within the mesophilic temperature range (28°C – 29°C - 36°C), measured pH values were 6.9 – 7 – 6.1 for fifty days’ production (retention) period. The volume of biogas produced was 27.7 ml/g, maximum production rate of biogas is 5.1 ml/g/day and the minimum time required for biogas production (the lag phase) was three days. The kinetic evaluation of the production data showed that the coefficient of determination (R²) were as follows, linear model: 0.9673 and 0.7808, exponential model: 0.9742 and 0.779 for the ascending and descending climbs respectively, Gaussian model: 0.9132, Logistic Growth model: 0.9979 and Modified Gompertz model: 0.999 with the logistic model gave the kinetic constant of 2.564. Thus, the Modified Gompertz model yielded high accuracy result. In addition, the reactor model developed solved with the Modified Gompertz kinetic model predicted the biogas production process accurately with cumulative biogas production of 28.13 ml/g compared to the experimental cumulative production of 27.7 ml/g with a deviation of 1.53%.

Published in	Chemical and Biomolecular Engineering (Volume 6, Issue 3)
DOI	10.11648/j.cbe.20210603.12
Page(s)	49-58
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Anaerobic Digester, Cow Dung, Biogas, Cumulative Biogas, Kinetic Models

References

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APA Style

Akpa Jackson Gunorubon, Igbagara Princewill Woyinbrakemi, Adeloye Olalekan Michael. (2021). Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung). Chemical and Biomolecular Engineering, 6(3), 49-58. https://doi.org/10.11648/j.cbe.20210603.12

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ACS Style

Akpa Jackson Gunorubon; Igbagara Princewill Woyinbrakemi; Adeloye Olalekan Michael. Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung). Chem. Biomol. Eng. 2021, 6(3), 49-58. doi: 10.11648/j.cbe.20210603.12

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AMA Style

Akpa Jackson Gunorubon, Igbagara Princewill Woyinbrakemi, Adeloye Olalekan Michael. Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung). Chem Biomol Eng. 2021;6(3):49-58. doi: 10.11648/j.cbe.20210603.12

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@article{10.11648/j.cbe.20210603.12,
  author = {Akpa Jackson Gunorubon and Igbagara Princewill Woyinbrakemi and Adeloye Olalekan Michael},
  title = {Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung)},
  journal = {Chemical and Biomolecular Engineering},
  volume = {6},
  number = {3},
  pages = {49-58},
  doi = {10.11648/j.cbe.20210603.12},
  url = {https://doi.org/10.11648/j.cbe.20210603.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.cbe.20210603.12},
  abstract = {A laboratory scale anaerobic digester unit was setup and applied for biogas production from cow dung. Anaerobic digestion was conducted at 35°C and observed for a retention period of fifty days. The ambient and slurry temperatures, pH of slurry and amount of biogas produced were measured on a four-day interval basis. The experimental data obtained were used for kinetic studies by fitting the data to known kinetic models such as Linear, Exponential, Gaussian, Logistics and Modified Gompertz. The constants in these models were determined by linear regression using the Matlab curve fitting tool box. A reactor model for the bioreactor was also developed. The experimental results showed biogas production occurred within the mesophilic temperature range (28°C – 29°C - 36°C), measured pH values were 6.9 – 7 – 6.1 for fifty days’ production (retention) period. The volume of biogas produced was 27.7 ml/g, maximum production rate of biogas is 5.1 ml/g/day and the minimum time required for biogas production (the lag phase) was three days. The kinetic evaluation of the production data showed that the coefficient of determination (R2) were as follows, linear model: 0.9673 and 0.7808, exponential model: 0.9742 and 0.779 for the ascending and descending climbs respectively, Gaussian model: 0.9132, Logistic Growth model: 0.9979 and Modified Gompertz model: 0.999 with the logistic model gave the kinetic constant of 2.564. Thus, the Modified Gompertz model yielded high accuracy result. In addition, the reactor model developed solved with the Modified Gompertz kinetic model predicted the biogas production process accurately with cumulative biogas production of 28.13 ml/g compared to the experimental cumulative production of 27.7 ml/g with a deviation of 1.53%.},
 year = {2021}
}

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TY  - JOUR
T1  - Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung)
AU  - Akpa Jackson Gunorubon
AU  - Igbagara Princewill Woyinbrakemi
AU  - Adeloye Olalekan Michael
Y1  - 2021/09/06
PY  - 2021
N1  - https://doi.org/10.11648/j.cbe.20210603.12
DO  - 10.11648/j.cbe.20210603.12
T2  - Chemical and Biomolecular Engineering
JF  - Chemical and Biomolecular Engineering
JO  - Chemical and Biomolecular Engineering
SP  - 49
EP  - 58
PB  - Science Publishing Group
SN  - 2578-8884
UR  - https://doi.org/10.11648/j.cbe.20210603.12
AB  - A laboratory scale anaerobic digester unit was setup and applied for biogas production from cow dung. Anaerobic digestion was conducted at 35°C and observed for a retention period of fifty days. The ambient and slurry temperatures, pH of slurry and amount of biogas produced were measured on a four-day interval basis. The experimental data obtained were used for kinetic studies by fitting the data to known kinetic models such as Linear, Exponential, Gaussian, Logistics and Modified Gompertz. The constants in these models were determined by linear regression using the Matlab curve fitting tool box. A reactor model for the bioreactor was also developed. The experimental results showed biogas production occurred within the mesophilic temperature range (28°C – 29°C - 36°C), measured pH values were 6.9 – 7 – 6.1 for fifty days’ production (retention) period. The volume of biogas produced was 27.7 ml/g, maximum production rate of biogas is 5.1 ml/g/day and the minimum time required for biogas production (the lag phase) was three days. The kinetic evaluation of the production data showed that the coefficient of determination (R2) were as follows, linear model: 0.9673 and 0.7808, exponential model: 0.9742 and 0.779 for the ascending and descending climbs respectively, Gaussian model: 0.9132, Logistic Growth model: 0.9979 and Modified Gompertz model: 0.999 with the logistic model gave the kinetic constant of 2.564. Thus, the Modified Gompertz model yielded high accuracy result. In addition, the reactor model developed solved with the Modified Gompertz kinetic model predicted the biogas production process accurately with cumulative biogas production of 28.13 ml/g compared to the experimental cumulative production of 27.7 ml/g with a deviation of 1.53%.
VL  - 6
IS  - 3
ER  -

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Author Information

Akpa Jackson Gunorubon

Department of Chemical, Petrochemical Engineering Rivers State University, Port-Harcourt, Nigeria
Igbagara Princewill Woyinbrakemi

Department of Chemical Engineering, Federal University of Petroleum Resources, Effurun, Nigeria
Adeloye Olalekan Michael

Department of Chemical, Petrochemical Engineering Rivers State University, Port-Harcourt, Nigeria

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APA Style

Akpa Jackson Gunorubon, Igbagara Princewill Woyinbrakemi, Adeloye Olalekan Michael. (2021). Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung). Chemical and Biomolecular Engineering, 6(3), 49-58. https://doi.org/10.11648/j.cbe.20210603.12

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ACS Style

Akpa Jackson Gunorubon; Igbagara Princewill Woyinbrakemi; Adeloye Olalekan Michael. Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung). Chem. Biomol. Eng. 2021, 6(3), 49-58. doi: 10.11648/j.cbe.20210603.12

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AMA Style

Akpa Jackson Gunorubon, Igbagara Princewill Woyinbrakemi, Adeloye Olalekan Michael. Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung). Chem Biomol Eng. 2021;6(3):49-58. doi: 10.11648/j.cbe.20210603.12

Copy | Download

@article{10.11648/j.cbe.20210603.12,
  author = {Akpa Jackson Gunorubon and Igbagara Princewill Woyinbrakemi and Adeloye Olalekan Michael},
  title = {Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung)},
  journal = {Chemical and Biomolecular Engineering},
  volume = {6},
  number = {3},
  pages = {49-58},
  doi = {10.11648/j.cbe.20210603.12},
  url = {https://doi.org/10.11648/j.cbe.20210603.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.cbe.20210603.12},
  abstract = {A laboratory scale anaerobic digester unit was setup and applied for biogas production from cow dung. Anaerobic digestion was conducted at 35°C and observed for a retention period of fifty days. The ambient and slurry temperatures, pH of slurry and amount of biogas produced were measured on a four-day interval basis. The experimental data obtained were used for kinetic studies by fitting the data to known kinetic models such as Linear, Exponential, Gaussian, Logistics and Modified Gompertz. The constants in these models were determined by linear regression using the Matlab curve fitting tool box. A reactor model for the bioreactor was also developed. The experimental results showed biogas production occurred within the mesophilic temperature range (28°C – 29°C - 36°C), measured pH values were 6.9 – 7 – 6.1 for fifty days’ production (retention) period. The volume of biogas produced was 27.7 ml/g, maximum production rate of biogas is 5.1 ml/g/day and the minimum time required for biogas production (the lag phase) was three days. The kinetic evaluation of the production data showed that the coefficient of determination (R2) were as follows, linear model: 0.9673 and 0.7808, exponential model: 0.9742 and 0.779 for the ascending and descending climbs respectively, Gaussian model: 0.9132, Logistic Growth model: 0.9979 and Modified Gompertz model: 0.999 with the logistic model gave the kinetic constant of 2.564. Thus, the Modified Gompertz model yielded high accuracy result. In addition, the reactor model developed solved with the Modified Gompertz kinetic model predicted the biogas production process accurately with cumulative biogas production of 28.13 ml/g compared to the experimental cumulative production of 27.7 ml/g with a deviation of 1.53%.},
 year = {2021}
}

Copy | Download

TY  - JOUR
T1  - Kinetics and Reactor Model of Biogas Production from Abattoir Waste (Cow Dung)
AU  - Akpa Jackson Gunorubon
AU  - Igbagara Princewill Woyinbrakemi
AU  - Adeloye Olalekan Michael
Y1  - 2021/09/06
PY  - 2021
N1  - https://doi.org/10.11648/j.cbe.20210603.12
DO  - 10.11648/j.cbe.20210603.12
T2  - Chemical and Biomolecular Engineering
JF  - Chemical and Biomolecular Engineering
JO  - Chemical and Biomolecular Engineering
SP  - 49
EP  - 58
PB  - Science Publishing Group
SN  - 2578-8884
UR  - https://doi.org/10.11648/j.cbe.20210603.12
AB  - A laboratory scale anaerobic digester unit was setup and applied for biogas production from cow dung. Anaerobic digestion was conducted at 35°C and observed for a retention period of fifty days. The ambient and slurry temperatures, pH of slurry and amount of biogas produced were measured on a four-day interval basis. The experimental data obtained were used for kinetic studies by fitting the data to known kinetic models such as Linear, Exponential, Gaussian, Logistics and Modified Gompertz. The constants in these models were determined by linear regression using the Matlab curve fitting tool box. A reactor model for the bioreactor was also developed. The experimental results showed biogas production occurred within the mesophilic temperature range (28°C – 29°C - 36°C), measured pH values were 6.9 – 7 – 6.1 for fifty days’ production (retention) period. The volume of biogas produced was 27.7 ml/g, maximum production rate of biogas is 5.1 ml/g/day and the minimum time required for biogas production (the lag phase) was three days. The kinetic evaluation of the production data showed that the coefficient of determination (R2) were as follows, linear model: 0.9673 and 0.7808, exponential model: 0.9742 and 0.779 for the ascending and descending climbs respectively, Gaussian model: 0.9132, Logistic Growth model: 0.9979 and Modified Gompertz model: 0.999 with the logistic model gave the kinetic constant of 2.564. Thus, the Modified Gompertz model yielded high accuracy result. In addition, the reactor model developed solved with the Modified Gompertz kinetic model predicted the biogas production process accurately with cumulative biogas production of 28.13 ml/g compared to the experimental cumulative production of 27.7 ml/g with a deviation of 1.53%.
VL  - 6
IS  - 3
ER  -

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