A Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications

Methane is a major greenhouse gas and a precursor of tropospheric ozone, and most of its sources are linked to anthropogenic activities. The sources of methane are well known and its monitoring generally involves the use of expensive gas analyzers with high operating costs. Many studies have investi...

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Autores principales:	Leonardo Furst, Manuel Feliciano, Laercio Frare, Getúlio Igrejas
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	gas sensor semiconductor greenhouse gases methane gas monitoring Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/955530d70a4149c38f02151639940657
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spelling	oai:doaj.org-article:955530d70a4149c38f021516399406572021-11-25T18:56:35ZA Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications10.3390/s212274561424-8220https://doaj.org/article/955530d70a4149c38f021516399406572021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7456https://doaj.org/toc/1424-8220Methane is a major greenhouse gas and a precursor of tropospheric ozone, and most of its sources are linked to anthropogenic activities. The sources of methane are well known and its monitoring generally involves the use of expensive gas analyzers with high operating costs. Many studies have investigated the use of low-cost gas sensors as an alternative for measuring methane concentrations; however, it is still an area that needs further development to ensure reliable measurements. In this work a low-cost platform for measuring methane within a low concentration range was developed and used in two distinct environments to continuously assess and improve its performance. The methane sensor was the Figaro TGS2600, a metal oxide semiconductor (MOS) based on tin dioxide (SnO<sub>2</sub>). In a first stage, the monitoring platform was applied in a small ruminant barn after undergoing a multi-point calibration. In a second stage, the system was used in a wastewater treatment plant together with a multi-gas analyzer (Gasera One Pulse). The calibration of low-cost sensor was based on the relation of the readings of the two devices. Temperature and relative humidity were also measured to perform corrections to minimize the effects of these variables on the sensor signal and an active ventilation system was used to improve the performance of the sensor. The system proved to be able to measure low methane concentrations following reliable spatial and temporal patterns in both places. A very similar behavior between both measuring systems was also well noticeable at WWTP. In general, the low-cost system presented good performance under several environmental conditions, showing itself to be a good alternative, at least as a screening monitoring system.Leonardo FurstManuel FelicianoLaercio FrareGetúlio IgrejasMDPI AGarticlegas sensorsemiconductorgreenhouse gasesmethanegas monitoringChemical technologyTP1-1185ENSensors, Vol 21, Iss 7456, p 7456 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	gas sensor semiconductor greenhouse gases methane gas monitoring Chemical technology TP1-1185
spellingShingle	gas sensor semiconductor greenhouse gases methane gas monitoring Chemical technology TP1-1185 Leonardo Furst Manuel Feliciano Laercio Frare Getúlio Igrejas A Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications
description	Methane is a major greenhouse gas and a precursor of tropospheric ozone, and most of its sources are linked to anthropogenic activities. The sources of methane are well known and its monitoring generally involves the use of expensive gas analyzers with high operating costs. Many studies have investigated the use of low-cost gas sensors as an alternative for measuring methane concentrations; however, it is still an area that needs further development to ensure reliable measurements. In this work a low-cost platform for measuring methane within a low concentration range was developed and used in two distinct environments to continuously assess and improve its performance. The methane sensor was the Figaro TGS2600, a metal oxide semiconductor (MOS) based on tin dioxide (SnO<sub>2</sub>). In a first stage, the monitoring platform was applied in a small ruminant barn after undergoing a multi-point calibration. In a second stage, the system was used in a wastewater treatment plant together with a multi-gas analyzer (Gasera One Pulse). The calibration of low-cost sensor was based on the relation of the readings of the two devices. Temperature and relative humidity were also measured to perform corrections to minimize the effects of these variables on the sensor signal and an active ventilation system was used to improve the performance of the sensor. The system proved to be able to measure low methane concentrations following reliable spatial and temporal patterns in both places. A very similar behavior between both measuring systems was also well noticeable at WWTP. In general, the low-cost system presented good performance under several environmental conditions, showing itself to be a good alternative, at least as a screening monitoring system.
format	article
author	Leonardo Furst Manuel Feliciano Laercio Frare Getúlio Igrejas
author_facet	Leonardo Furst Manuel Feliciano Laercio Frare Getúlio Igrejas
author_sort	Leonardo Furst
title	A Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications
title_short	A Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications
title_full	A Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications
title_fullStr	A Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications
title_full_unstemmed	A Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications
title_sort	portable device for methane measurement using a low-cost semiconductor sensor: development, calibration and environmental applications
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/955530d70a4149c38f02151639940657
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A Portable Device for Methane Measurement Using a Low-Cost Semiconductor Sensor: Development, Calibration and Environmental Applications

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