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Anaerobic digestion and digestate use: accounting of greenhouse gases and global warming contribution.
Waste Manag Res. 2009 Nov; 27(8):813-24.WM

Abstract

Anaerobic digestion (AD) of source-separated municipal solid waste (MSW) and use of the digestate is presented from a global warming (GW) point of view by providing ranges of greenhouse gas (GHG) emissions that are useful for calculation of global warming factors (GWFs), i.e. the contribution to GW measured in CO(2)-equivalents per tonne of wet waste. The GHG accounting was done by distinguishing between direct contributions at the AD facility and indirect upstream or downstream contributions. GHG accounting for a generic AD facility with either biogas utilization at the facility or upgrading of the gas for vehicle fuel resulted in a GWF from -375 (a saving) to 111 (a load) kg CO(2)-eq. tonne(-1) wet waste. In both cases the digestate was used for fertilizer substitution. This large range was a result of the variation found for a number of key parameters: energy substitution by biogas, N(2)O-emission from digestate in soil, fugitive emission of CH(4), unburned CH(4), carbon bound in soil and fertilizer substitution. GWF for a specific type of AD facility was in the range -95 to -4 kg CO(2)-eq. tonne(-1) wet waste. The ranges of uncertainty, especially of fugitive losses of CH(4) and carbon sequestration highly influenced the result. In comparison with the few published GWFs for AD, the range of our data was much larger demonstrating the need to use a consistent and robust approach to GHG accounting and simultaneously accept that some key parameters are highly uncertain.

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Authors+Show Affiliations

Møller J
Department of Environmental Engineering, Technical University of Denmark, Kongens Lyngby, Denmark. jam@env.dtu.dk
Boldrin A
No affiliation info available
Christensen TH
No affiliation info available

MeSH

Air PollutantsBacteria, AnaerobicBiodegradation, EnvironmentalBiofuelsBioreactorsCarbon DioxideEnvironmental MonitoringGlobal WarmingMethaneRefuse Disposal

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19748957

Citation

Møller, Jacob, et al. "Anaerobic Digestion and Digestate Use: Accounting of Greenhouse Gases and Global Warming Contribution." Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA, vol. 27, no. 8, 2009, pp. 813-24.
Møller J, Boldrin A, Christensen TH. Anaerobic digestion and digestate use: accounting of greenhouse gases and global warming contribution. Waste Manag Res. 2009;27(8):813-24.
Møller, J., Boldrin, A., & Christensen, T. H. (2009). Anaerobic digestion and digestate use: accounting of greenhouse gases and global warming contribution. Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA, 27(8), 813-24. https://doi.org/10.1177/0734242X09344876
Møller J, Boldrin A, Christensen TH. Anaerobic Digestion and Digestate Use: Accounting of Greenhouse Gases and Global Warming Contribution. Waste Manag Res. 2009;27(8):813-24. PubMed PMID: 19748957.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Anaerobic digestion and digestate use: accounting of greenhouse gases and global warming contribution. AU - Møller,Jacob, AU - Boldrin,Alessio, AU - Christensen,Thomas H, Y1 - 2009/09/11/ PY - 2009/9/15/entrez PY - 2009/9/15/pubmed PY - 2010/2/11/medline SP - 813 EP - 24 JF - Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA JO - Waste Manag Res VL - 27 IS - 8 N2 - Anaerobic digestion (AD) of source-separated municipal solid waste (MSW) and use of the digestate is presented from a global warming (GW) point of view by providing ranges of greenhouse gas (GHG) emissions that are useful for calculation of global warming factors (GWFs), i.e. the contribution to GW measured in CO(2)-equivalents per tonne of wet waste. The GHG accounting was done by distinguishing between direct contributions at the AD facility and indirect upstream or downstream contributions. GHG accounting for a generic AD facility with either biogas utilization at the facility or upgrading of the gas for vehicle fuel resulted in a GWF from -375 (a saving) to 111 (a load) kg CO(2)-eq. tonne(-1) wet waste. In both cases the digestate was used for fertilizer substitution. This large range was a result of the variation found for a number of key parameters: energy substitution by biogas, N(2)O-emission from digestate in soil, fugitive emission of CH(4), unburned CH(4), carbon bound in soil and fertilizer substitution. GWF for a specific type of AD facility was in the range -95 to -4 kg CO(2)-eq. tonne(-1) wet waste. The ranges of uncertainty, especially of fugitive losses of CH(4) and carbon sequestration highly influenced the result. In comparison with the few published GWFs for AD, the range of our data was much larger demonstrating the need to use a consistent and robust approach to GHG accounting and simultaneously accept that some key parameters are highly uncertain. SN - 1096-3669 UR - https://www.unboundmedicine.com/medline/citation/19748957/Anaerobic_digestion_and_digestate_use:_accounting_of_greenhouse_gases_and_global_warming_contribution_ L2 - https://journals.sagepub.com/doi/10.1177/0734242X09344876?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -