Integration between measurements and dispersion models for landfill gas emission monitoring

The work presented here is aimed at developing an indirect methodology for landfill gas emission monitoring by using an integrated approach between measurements and modelling. The proposed methodology is based on an optical measurement system, capable of quantifying concentrations of a tracer gas emitted by a waste landfill, along with a modelling system for tracer gas dispersion in the atmosphere. In the present study, this methodology has been applied, as a preliminary test, at the Case Passerini landfill site, in the Sesto Fiorentino (FI) territory. The test case allowed the evaluation of the proposed methodology, highlighting the positive aspects and the critical factors. The obtained results showed the potentiality of this approach, which can be used in order to integrate, and sometimes even to substitute, more expensive field direct measurement campaigns.