| Title: | Methane oxidation of residual landfill gas in a full-scale biofilter: human health risk assessment of volatile and malodours compound emissions |
| Author(s): | Rossi E; Pecorini I; Iannelli R; |
| Address: | "Department of Energy, Systems Territory and Construction Engineering, University of Pisa, Via C.F. Gabba 22, 56122, Pisa, Tuscany, Italy. Department of Energy, Systems Territory and Construction Engineering, University of Pisa, Via C.F. Gabba 22, 56122, Pisa, Tuscany, Italy. isabella.pecorini@unipi.it" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-020-08773-6 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "A human health risk assessment was performed to evaluate if a biofilter for the biological methane oxidation reduces the risk from exposure to landfill gas emissions and improves the air quality mitigating odour emissions from an aftercare landfill. Accordingly, three different scenarios of landfill gas management were defined, 9 volatile organic compounds (VOCs) (cyclohexane, n-hexane, 2-methylpentane, 3-methylpentane, benzene, xylenes, toluene, dichlorodifluoromethane, vinyl chloride) were identified and using the CALPUFF dispersion model; the pollutant concentration at eleven sensitive receptors was determined. Consequently, the risk (for cancer and non-cancer compounds) was assessed applying the methodology proposed by USEPA 2009. From one hand, to determine concentration and emission rates of VOCs and hydrogen sulphide, a sample of raw landfill gas and three air samples from the biofilter surface were collected with dynamic flux chamber method and analysed in accordance with US EPA, 1986 and USEPA TO-15, 1999. To the other hand, odour emissions were assessed based both on chemical and dynamic olfactometric measurements (EN 13725:2003). The field surveys results showed a reduction of the cancer risk on average by 79% and of the hazard quotient on average by 92%. In contrast, the results of olfactometry measurements showed a lower efficiency on odour reduction than the target value of 70%. Nonetheless, the odour concentration was always far below 300 uo(E) m(-3) at the biofilter surface and odour concentration never exceed 1 uo(E) m(-3) at the sensitive receptors" |
| Keywords: | *Air Pollutants/analysis *Air Pollution/prevention & control Humans Methane/analysis *Refuse Disposal Risk Assessment Waste Disposal Facilities Biofilter Health human risk assessment Landfill gas Methane oxidation Odour compounds VOCs; |
| Notes: | "MedlineRossi, Elena Pecorini, Isabella Iannelli, Renato eng PRA_2018-2019_ 'Approcci sostenibili per I sistemi idrici e la riqualificazione del territorio in ambito urbano'/PRA - Progetti di Ricerca di Ateneo' (Institutional Research Grants) University of Pisa/ LIFE 14 CCM/IT/000464/EU/ Germany 2020/04/21 Environ Sci Pollut Res Int. 2021 May; 28(19):24419-24431. doi: 10.1007/s11356-020-08773-6. Epub 2020 Apr 20" |
