The purpose of this paper is to present a research study on application of low-cost solid-state gas microsensors for odour control and air-pollution monitoring in a landfill. The method introduces microsensors based on commercial devices of n-type metal oxides for cost-effective and real-time monitoring. This research provides a comparative study and assessment of the sensor response for odour detection and potential continuous monitoring of methane (CH4) and Non-Methanic Hydro-Carbons (NMHC) in a landfill. This leads to an insight into low-cost gas sensing capability for practical applications. The environmental measurements have been performed by a sensor-array with multiple sensing elements for high sensitivity and broad selectivity detection. This sensor technology may be useful for the development of a portable, compact, wireless and cost-effective system for gas monitoring applications and industrial process control. The results are discussed as the outcome of an experimental work carried in field at a landfill and demonstrate the efficiency of the low-cost chemo-resistors array for odour sensing and environmental monitoring. Additional long-term investigations need to address some drawbacks on sensors stability and cross-sensitivity. © 2014 Elsevier B.V.

A case-study of microsensors for landfill air-pollution monitoring applications

Pfister V.;Cassano G.;Suriano D.;Penza M.
2015

Abstract

The purpose of this paper is to present a research study on application of low-cost solid-state gas microsensors for odour control and air-pollution monitoring in a landfill. The method introduces microsensors based on commercial devices of n-type metal oxides for cost-effective and real-time monitoring. This research provides a comparative study and assessment of the sensor response for odour detection and potential continuous monitoring of methane (CH4) and Non-Methanic Hydro-Carbons (NMHC) in a landfill. This leads to an insight into low-cost gas sensing capability for practical applications. The environmental measurements have been performed by a sensor-array with multiple sensing elements for high sensitivity and broad selectivity detection. This sensor technology may be useful for the development of a portable, compact, wireless and cost-effective system for gas monitoring applications and industrial process control. The results are discussed as the outcome of an experimental work carried in field at a landfill and demonstrate the efficiency of the low-cost chemo-resistors array for odour sensing and environmental monitoring. Additional long-term investigations need to address some drawbacks on sensors stability and cross-sensitivity. © 2014 Elsevier B.V.
Sensors array;Landfill gas;Gas sensors;Air-pollutants control;Odour monitoring
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/823
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