{"accessLevel": "public", "bureauCode": ["020:00"], "contactPoint": {"fn": "William Linak", "hasEmail": "mailto:linak.bill@epa.gov"}, "describedBy": "https://pasteur.epa.gov/uploads/10.23719/1372478/documents/Data%20Dictionary.docx", "describedByType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "description": "Pulverized bituminous coal was burned in a 10W externally heated entrained flow furnace under air-combustion and three oxy-combustion inlet oxygen conditions (28, 32, and 36%).  Experiments were designed to produce flames with practically relevant stoichiometric ratios (SR=1.2-1.4) and constant residence times (2.3s).  Size-classified fly ash samples were collected, and measurements focused on the soot, elemental carbon (EC), and organic carbon (OC) composition of the total and ultrafine (<0.6\u00b5m) fly ash.  Results indicate that although the total fly ash carbon, as measured by loss on ignition, was always acceptably low (<2%) with all three oxy-combustion conditions lower than air-combustion, the ultrafine fly ash for both air-fired and oxy-fired combustion conditions consists primarily of carbonaceous material (50-95%).  Carbonaceous components on particles <0.6\u00b5m measured by a thermal optical method showed that large fractions (52-93%) consisted of OC rather than EC, as expected.  This observation was supported by thermogravimetric analysis indicating that for the air, 28% oxy, and 32% oxy conditions, 14-71% of this material may be OC volatilizing between 100 and 550\u00b0C with the remaining 29-86% being EC/soot.  However, for the 36% oxy condition, OC may comprise over 90% of the ultrafine carbon with a much smaller EC/soot contribution.  These data were interpreted by considering the effects of oxy-combustion on flame attachment, ignition delay, and soot oxidation of a bituminous coal, and the effects of these processes on OC and EC emissions.  Flame aerodynamics and inlet oxidant composition may influence emissions of organic hazardous air pollutants (HAPs) from a bituminous coal.   During oxy-coal combustion, judicious control of inlet oxygen concentration and placement may be used to minimize organic HAP and soot emissions. \n\nThis dataset is associated with the following publication:\nAndersen, M., N. Modak, C. Winterrowd, C.W. Lee , W. Roberts, J. Wendt, and B. Linak. Soot, organics and ultrafine ash from air- and oxy-fired coal combustion.   Proceedings of the Combustion Institute. Elsevier B.V., Amsterdam,  NETHERLANDS, 36(3): 4029-4037, (2017).", "distribution": [{"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1372478/Fig%201%20of%203.pdf", "mediaType": "application/pdf", "title": "Fig 1 of 3.pdf"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1372478/Fig%202rev.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "Fig 2rev.xlsx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1372478/Fig%203_20160509_Possible_Edits.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "Fig 3_20160509_Possible_Edits.xlsx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1372478/Table%201%20of%204.docx", "mediaType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "title": "Table 1 of 4.docx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1372478/Table%202%20of%204.docx", "mediaType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "title": "Table 2 of 4.docx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1372478/Table%203%20of%204.docx", "mediaType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "title": "Table 3 of 4.docx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1372478/Table%204%20of%204.docx", "mediaType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "title": "Table 4 of 4.docx"}], "identifier": "https://doi.org/10.23719/1372478", "keyword": ["elemental carbon", "loss on ignition", "organic carbon", "oxy-coal combustion", "ultrafine fly ash"], "license": "https://pasteur.epa.gov/license/sciencehub-license.html", "modified": "2017-07-25", "programCode": ["020:094"], "publisher": {"name": "U.S. EPA Office of Research and Development (ORD)", "subOrganizationOf": {"name": "U.S. Environmental Protection Agency", "subOrganizationOf": {"name": "U.S. Government"}}}, "references": ["https://doi.org/10.1016/j.proci.2016.08.073"], "rights": null, "title": "Soot, organics, and ultrafine ash from air- and oxy-fired coal combustion"}