Removal of vapour phase PCDD/Fs in electric arc furnace steelmaking emissions by sorption using plastics.
Plastics are potentially suitable for the removal of vapour phase PCDD/Fs in emissions from the electric arc furnace (EAF) steelmaking process. Three different commercial plastics, i.e. polypropylene BE170MO (Borealis A/S, Denmark), polypropylene in the form of 5 mm spheres (The Precision Plastic Ball Co. Ltd., UK) and polyethylene LD605BA (ExxonMobil Chemical, Belgium), have been studied using a novel experimental apparatus for the removal of vapour phase PCDD/Fs. Polypropylene BE170MO was identified to be the most suitable product amongst the three plastics in terms of PCDD/F sorption and potential industrial application. The optimum temperature for PCDD/F sorption on polypropylene BE170MO was below 90 degrees C for a removal efficiency of >99% at an average vapour phase PCDD/F concentration of 3.5 ng I-TEQ/Nm(3). At 130 degrees C, 53% of the PCDD/Fs trapped on polypropylene BE170MO were desorbed.
Ooi
Tze Chean
TC
Department of Chemical and Process Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK. alan.ooi@corusgroup.com
Ewan
Bruce C R
BC
Cliffe
Keith R
KR
Anderson
David R
DR
Fisher
Raymond
R
Thompson
Dennis
D
D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry / Q000302:isolation & purification*; D001572:Benzofurans / Q000737:chemistry / Q000302:isolation & purification*; D000072338:Dibenzofurans, Polychlorinated; D004560:Electricity; D010969:Plastics / Q000737:chemistry*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D011126:Polypropylenes / Q000737:chemistry; D013232:Steel; D013499:Surface Properties; D013696:Temperature; D014835:Volatilization
D000393:Air Pollutants; D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D010969:Plastics; D000072317:Polychlorinated Dibenzodioxins; D011126:Polypropylenes; D013232:Steel