Skip to Main Content
Effect of low-density polyethylene on smoke emissions from burning of simulated debris pilesAuthor(s): Seyedehsan Hosseini; Qi Li; Manish Shrivastava; David R. Weise; David R. Cocker; J. Wayne Miller; Heejung S Jung
Source: Journal of Air and Waste Management 64(6): 690-703
Publication Series: Scientific Journal (JRNL)
Station: Pacific Southwest Research Station
View PDF (2.03 MB)
DescriptionLow-density polyethylene (LDPE) plastic is used to keep piled debris from silvicultural activities—activities associated with development and care of forests—dry to enable efficient disposal by burning. The effects of inclusion of LDPE in this manner on smoke emissions are not well known. In a combustion laboratory experiment, 2-kg mixtures of LDPE and manzanita (Arctostaphylos sp.) wood containing 0, 0.25, and 2.5% LDPE by mass were burned. Gaseous and particulate emissions were sampled in real time during the entire flaming, mixed combustion phase—when the flaming and smoldering phases are present at the same time—and during a portion of the smoldering phase. Analysis of variance was used to test significance of modified combustion efficiency (MCE)—the ratio of concentrations of fire-integrated excess CO2 to CO2 plus CO—and LDPE content on measured individual compounds. MCE ranged between 0.983 and 0.993, indicating that combustion was primarily flaming; MCE was seldom significant as a covariate. Of the 195 compounds identified in the smoke emissions, only the emission factor (EF) of 3M-octane showed an increase with increasing LDPE content. Inclusion of LDPE had an effect on EFs of pyrene and fluoranthene, but no statistical evidence of a linear trend was found. Particulate emission factors showed a marginally significant linear relationship with MCE (0.05 < P-value < 0.10). Based on the results of the current and previous studies and literature reviews, the inclusion of small mass proportions of LDPE in piled silvicultural debris does not appear to change the emissions produced when low-moisture-content wood is burned. In general, combustion of wet piles results in lower MCEs and consequently higher levels of emissions.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationHosseini, Seyedehsan; Li, Qi; Shrivastava, Manish; Weise, David R.; Cocker, David R.; Miller, J. Wayne; Jung, Heejung S 2014. Effect of low-density polyethylene on smoke emissions from burning of simulated debris piles. Journal of Air and Waste Management Association 64:6, 690-703, doi: 10.1080/10962247.2014.882282
Keywordsplastic, air quality, pile burning
- Burning California Chaparral - An Exploratory Study of Some Common Shrubs and Their Combustion Characteristics
- Particle size distributions from laboratory-scale biomass fires using fast response instruments
- The impact of aging on laboratory fire behaviour in masticated shrub fuelbeds of California and Oregon, USA
XML: View XML