Technical Papers
Oct 28, 2023

Predicting the Production of Probiotic Biomass and Lactic Acid via Fuzzy Logic during the Anaerobic Treatment of Swine Waste (Sus domestica) with Lactobacillus acidophilus

Publication: Journal of Environmental Engineering
Volume 150, Issue 1

Abstract

The massive generation of pig manure significantly contributes to the emission of greenhouse gases; in addition, its poor disposal represents a serious risk to human and animal health. In recent years, the microbial fermentation process has become relevant because it is considered a circular bioeconomy strategy, guaranteeing the recovery of agro-industrial waste and waste management. In this work, the production of lactic acid and biomass was evaluated from an anaerobic bioconversion process of swine residues in the presence of L. acidophilus. A 5 L capacity reactor was used, and different stirring speeds were evaluated (100, 150, and 200 rpm). It was concluded that the highest production of lactic acid and biomass was 30.15 and 111.52  g/L, respectively, which were reached during the experiments carried out at 100 rpm. The biomass was analyzed to determine the content of carbohydrates, proteins, and cell count, which were 0  g/L, 17.16%, and 3.45×107cfu/g, respectively. Finally, the fuzzy logic technique was applied, and response surface graphs were generated to determine the variables with the greatest impact on lactic acid and biomass generation.

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Data Availability Statement

All data, models, and code generated or used during the study appear in the published article.

Acknowledgments

The authors are grateful for the support for the infrastructure use facilities of the Tecnológico Nacional de México Campus Orizaba. Estrada-García thanks the National Consejo Nacional de Ciencia y Tecnología (CONACyT) for the scholarship awarded for a master’s degree with CVU (scholarship holder) 1006558. Romero-Mota thanks CONACyT for the financial support to pursue a Ph.D. (engineering sciences) with CVU 608912. This research was supported by the Tecnológico Nacional de México (TecNM) through project 10199.21P.
Author contributions: Conceptualization, J.M.M.C; methodology, D.I.R.M, J.E.G, G.A.H.P., and A.A.A.L.; validation, D.I.R.M and J.E.G.; formal analysis, G.A.H.P., A.A.A.L., D.I.R.M, J.e.g., and J.M.M.C.; investigation, D.I.R.M and J.E.G.; resources, J.M.M.C; writing—original draft preparation, D.I.R.M, J.e.g., and J.M.M.C.; writing—review and editing, D.I.R.M, J.e.g., and J.M.M.C.; supervision, J.M.M.C. All authors have read and agreed to the published version of the manuscript.

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Journal of Environmental Engineering
Volume 150Issue 1January 2024

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Received: Jul 2, 2023
Accepted: Aug 31, 2023
Published online: Oct 28, 2023
Published in print: Jan 1, 2024
Discussion open until: Mar 28, 2024

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Joaquín Estrada-García [email protected]
Ph.D. Student, División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México campus Orizaba, Avenida Oriente 9 No. 852, Colonia Emiliano Zapata 94320, México. Email: [email protected]
Diana Ibeth Romero-Mota [email protected]
Ph.D. Candidate, División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México campus Orizaba, Avenida Oriente 9 No. 852, Colonia Emiliano Zapata 94320, México. Email: [email protected]
Gustavo Ángel Huerta-Pérez [email protected]
División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México campus Orizaba, Avenida Oriente 9 No. 852, Colonia Emiliano Zapata 94320, México. Email: [email protected]
Alberto Alfonso Aguilar-Lasserre [email protected]
Associate Professor and Researcher, División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México campus Orizaba, Avenida Oriente 9 No. 852, Colonia Emiliano Zapata 94320, México. Email: [email protected]
Juan Manuel Méndez-Contreras [email protected]
Associate Professor and Researcher, División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México campus Orizaba, Avenida Oriente 9 No. 852, Colonia Emiliano Zapata 94320, México (corresponding author). Email: [email protected]

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