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Greenhouse gas emissions from home composting in practice
Swedish University of Agricultural Sciences.ORCID iD: 0000-0001-5979-9521
2014 (English)In: Bioresource Technology, Vol. 151, 174-182 p.Article in journal (Refereed) PublishedText
Abstract [en]

In Sweden, 16% of all biologically treated food waste is home composted. Emissions of the greenhouse gases CH4 and N2O and emissions of NH3 from home composts were measured and factors affecting these emissions were examined. Gas and substrate in the compost bins were sampled and the composting conditions assessed 13 times during a 1-year period in 18 home composts managed by the home owners. The influence of process parameters and management factors was evaluated by regression analysis. The mean CH4 and N2O concentration was 28.1 and 5.46 ppm (v/v), respectively, above the ambient level and the CH4:CO2 and N2O:CO2 ratio was 0.38% and 0.15%, respectively (median values 0.04% and 0.07%, respectively). The home composts emitted less CH4 than large-scale composts, but similar amounts of N2O. Overall NH3 concentrations were low. Increasing the temperature, moisture content, mixing frequency and amount of added waste all increased CH4 emissions.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 151, 174-182 p.
National Category
Other Environmental Engineering
Identifiers
URN: urn:nbn:se:kth:diva-182616DOI: 10.1016/j.biortech.2013.10.049ISI: 000330085800025ScopusID: 2-s2.0-84887554164OAI: oai:DiVA.org:kth-182616DiVA: diva2:905212
Funder
Swedish Research Council Formas
Note

QC 20160304

Available from: 2016-02-22 Created: 2016-02-22 Last updated: 2016-03-04Bibliographically approved

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