A practical application for monitoring methane in ambient air at waste disposal facillities using a portable open path analyzer

It is well known that methane (CH4) is a greenhouse gas, and one of the main gases emittedfrom landfills, CH4 is also emitted from biogasification facilities and composting facilities, Anew method to monitor CH4 in ambient air has been developed using a portable open pathmethane analyzer (POMA) that is retailed as an urban gas leak detector. In this study, we haveinvestigated a practical application of a POMA in the field, and the characteristics of CH4emissions at landfill sites, biogasification facilities, and a composting facility,It is clear that this new method is convenient, and can be used to monitor the averageconcentration of CH4 in ambient air at a waste disposal facility, such as a landfill site, acomposting facility, or a biogasification facility, The concentration of CH4 in ambient air atlandfill sites, a composting facility, and biogasification facilities were found to be 2-30, 2-13,and 3-13 ppm, respectively,