Abstract:
:Home composting systems (HC) are known to facilitate municipal solid waste management, but little is known about their environmental impact including their greenhouse gas emissions (GGE). The present research focused on selecting HC configuration producing the least CH(4) and N(2)O. Thus, 4 HC types were used to compost food and yard waste for 150 days and monitored for CO(2), CH(4) and N(2)O as of day 15: the wood and plastic bins (WB and PB), the mixed and unmixed ground pile (GPM and GP). Using the same waste recipe, all HC were filled at once (batch fed) to maximize gaseous emissions. Weekly as of day 15, CO(2), N(2)O and CH(4) emissions were measured during 2-h sessions using a closed chamber inserted into the compost surface. Monitored compost characteristics indicated little differences over time except for moisture content. From day 15 to 150, CH(4) emissions were not measurable. Generation of N(2)O occurred between day 20 and 120 with PB producing the least because of top and bottom slots providing continuous convective aeration, as compared to the WB with slats over its full height and the naturally aerated mixed and unmixed ground piles. Total N(2)O emissions of 56 kg CO(2)-eq (tonne wet waste treated)(-1) for PB, 75 for GP, 97 for WB and 99 for GPM represented average value for centralized composting facilities. Present and past scientific works suggest the need for more research to establish the combined effect of management and HC configuration on gaseous emissions, with close CH(4) measurements from day 0 to 15.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Adhikari BK,Trémier A,Barrington S,Martinez J,Daumoin Mdoi
10.1016/j.jenvman.2012.12.008subject
Has Abstractpub_date
2013-02-15 00:00:00pages
163-71eissn
0301-4797issn
1095-8630pii
S0301-4797(12)00636-6journal_volume
116pub_type
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