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- Title
HFC-23 (CHF<sub>3</sub>) emission trend response to HCFC-22 (CHCIF<sub>2</sub>) production and recent HFC-23 emission abatement measures.
- Authors
Miller, B. R.; Rigby, M.; Kuijpers, L. J. M.; Krummel, P. B.; Steele, L. P.; Leist, M.; Fraser, P. J.; McCulloch, A.; Harth, C.; Salameh, P.; Mühle, J.; Weiss, R. F.; Prinn, R. G.; Wang, R. H. J.; O'Doherty, S.; Greally, B. R.; Simmonds, P. G.
- Abstract
HFC-23 (also known as CHF3, fluoroform or trifluoromethane) is a potent greenhouse gas (GHG), with a global warming potential (GWP) of 14 800 for a 100-year time horizon. It is an unavoidable by-product of HCFC-22 (CHClF2, chlorodifluoromethane) production. HCFC-22, an ozone depleting substance (ODS), is used extensively in commercial refrigeration and air conditioning, in the extruded polystyrene (XPS) foam industries (dispersive applications) and also as a feedstock in fluoropolymer manufacture (a non-dispersive use). Aside from small markets in specialty uses, HFC-23 has historically been considered a waste gas that was, and often still is, simply vented to the atmosphere. Efforts have been made in the past two decades to reduce HFC-23 emissions, including destruction (incineration) in facilities in developing countries under the United Nations Framework Convention on Climate Change's (UNFCCC) Clean Development Mechanism (CDM), and by process optimization and/or voluntary incineration by most producers in developed countries.
- Subjects
GREENHOUSE gases; OZONE-depleting substances; GLOBAL warming; CLIMATE change; DEVELOPING countries; DEVELOPED countries
- Publication
Atmospheric Chemistry & Physics Discussions, 2010, Vol 10, Issue 5, p13179
- ISSN
1680-7367
- Publication type
Article
- DOI
10.5194/acpd-10-13179-2010