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Ingeniería
Print version ISSN 0121-750X
Abstract
TOVAR-SANCHEZ, Juan A.; ARIAS-MOLINA, Juan F.; MILQUEZ-SANABRIA, Harvey A. and MAYORGA-CASTELLANOS, Manuel A.. Technical Design of a Low-Cost, Portable Methane Quantification System. ing. [online]. 2023, vol.28, suppl.1, e19053. Epub Mar 24, 2023. ISSN 0121-750X. https://doi.org/10.14483/23448393.19053.
Context:
Based on an analysis of the development of biodigester technology, a recurring problem with the rigorous quantification of methane was observed. A bibliographical review evidenced systems that are inefficient or have high costs. This work proposes an accessible and effective system that seeks to contribute to related academic and research projects.
Method:
Methane quantification is performed via an MQ-4 series sensor coupled with a capsule, creating a partially closed medium in which a dilution of sample gases and ambient air is injected by using a syringe, thus extending the measurement range of the sensor.
Results:
A calibration curve was elaborated, extending the measurement range from 0,02-1% concentration to 10-80%v/v, with a variance of ± 5%.
Conclusions:
An efficient and accessible prototype for methane quantification for academic and research purposes was developed. A guide for replicating the process is added as a complement.
Keywords : biogas; biodigester; methane; sensor; prototype; quantification; Arduino..