Correlations between biogas and dissolved methane generated and physical-chemical parameters of sewage in modified full-scale UASB-type reactors

Auteurs-es

DOI :

https://doi.org/10.5902/2236117073721

Mots-clés :

Biogas, Dissolved methane, Sewage, Statistical correlations, UASB reactors

Résumé

Anaerobic technology is widely used in Brazil for the treatment of domestic sewage, due to favorable conditions such as a hot climate and lower operational costs. In this process, by-products such as biogas are formed, which can be recovered and converted into energy. Accordingly, the present study aimed to report the correlations between biogas production—both in gaseous and dissolved forms—and domestic sewage parameters, using full-scale modified UASB-type reactors installed in Curitiba, Paraná. Measurements were performed in real time over five months. The monitored influent and effluent parameters included pH, temperature, alkalinity, acidity, TSS, VSS, FSS, COD, sulfate, dissolved methane, and flow rate. Biogas parameters included flow rate and the concentrations of methane, carbon dioxide, and hydrogen sulfide. To assess the relationships between variables in the gaseous and liquid phases, Spearman’s correlation tests were applied. Operational results showed low removal efficiencies for BOD, COD, and TSS, attributed to the open design of the three-phase separator in this type of reactor. Most of the correlations between influent and effluent sewage parameters and biogas flow were moderate and positive, indicating that as biogas flow increased or decreased, these parameters tended to follow the same trend. However, correlations between sewage parameters and dissolved methane concentrations were weak or statistically non-significant, suggesting the need for further studies to better understand the influencing factors behind this relevant but often overlooked methane fraction.

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Bibliographies de l'auteur-e

Ana Caroline de Paula Patulski, Universidade Tecnológica Federal do Paraná

Chemical Engineer from the Pontifical Catholic University of Paraná (PUCPR) and Master in Water Resources and Environmental Engineering from the Federal University of Paraná (UFPR). Currently studying for a PhD in Urban Environmental Sustainability at the Federal Technological University of Paraná (UTFPR) and works as an Engineer at the Market Intelligence Center of CRASA Infrastructure. 

José Gustavo Venâncio da Silva Ramos, Instituto Federal de Goiás

Civil Engineer from the Federal Technological University of Paraná (UTFPR) - Toledo Campus. Specialist in Environmental Engineering and Management from the State University of Ponta Grossa (UEPG). Master in Civil Engineering from the Federal Technological University of Paraná (UTFPR) - Ecoville Campus. Professor at the Department of Civil, Transportation and Cartographic Engineering of the Federal Institute of Education, Science and Technology of Goiás (IFG).

Charles Carneiro, Sanitation Company of Paraná State (SANEPAR)

Graduated in Agricultural Engineering, Master in Soil Science and PhD in Geology (Water Geochemistry) from the Federal University of Paraná (UFPR). Post-doctorate in Water Science and Engineering - UNESCO-IHE - Netherlands. Currently, he is an operational development engineer at the Paraná Sanitation Company - SANEPAR and Expert Member of WtERT Brazil - Academic Center of the Brazilian Association for Energy Recovery from Waste - ABREN

Cláudio Leite de Souza, Universidade Federal de Minas Gerais

He holds a degree in Civil Engineering from the Federal University of Viçosa (UFV), a Master’s and a PhD in Sanitation, Environment and Water Resources from the Federal University of Minas Gerais (UFMG). He is currently an Associate Professor at the Federal University of Minas Gerais (UFMG), in the Postgraduate Program in Sanitation, Environment and Water Resources.

Gustavo Rafael Collere Possetti, Sanitation Company of Paraná State

Graduated in Electrical Engineering, with emphasis in Electronics and Telecommunications, from the Federal Technological University of Paraná (UTFPR); and in Environmental Engineering, from the Federal University of Paraná (UFPR). Master and PhD in Electrical Engineering and Industrial Informatics, from the Federal Technological University of Paraná (UTFPR). Currently, he is the research and innovation manager at the Paraná Sanitation Company (SANEPAR).

Miguel Mansur Aisse, Universidade Federal do Paraná

Graduated in Civil Engineering from the Federal University of Paraná (UFPR), Master’s and Doctorate in Civil Engineering - Hydraulic Engineering from the University of São Paulo (USP). Professor at the Federal University of Paraná (UFPR), in the Department of Hydraulics and Sanitation and at the Postgraduate Program in Water Resources and Environmental Engineering.

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Publié-e

2025-07-07

Comment citer

Patulski, A. C. de P. ., Ramos, J. G. V. da S., Carneiro, C., de Souza, C. L., Possetti, G. R. C., & Aisse, M. M. (2025). Correlations between biogas and dissolved methane generated and physical-chemical parameters of sewage in modified full-scale UASB-type reactors. Revista Eletrônica Em Gestão, Educação E Tecnologia Ambiental, 25, e73721. https://doi.org/10.5902/2236117073721

Numéro

Vol. 25 (2025): Publicação Contínua

Rubrique

ENVIRONMENTAL THECNOLOGY

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Licence Creative Commons

Cette œuvre est sous licence Creative Commons Attribution - Pas d'Utilisation Commerciale - Partage dans les Mêmes Conditions 4.0 International.

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