PMID- 20039707
OWN - NLM
STAT- MEDLINE
DCOM- 20100426
LR  - 20131121
IS  - 0013-936X (Print)
IS  - 0013-936X (Linking)
VI  - 44
IP  - 3
DP  - 2010 Feb 1
TI  - Factors controlling alkylbenzene and tetrachloroethene desorption from municipal 
      solid waste components.
PG  - 1123-9
LID - 10.1021/es9030672 [doi]
AB  - Desorption rates of toluene, o-xylene and tetrachloroethene from individual 
      municipal solid waste components [high-density polyethylene (HDPE); poly(vinyl 
      chloride) (PVC); office paper; newsprint; and rabbit food, a model food and yard 
      waste] were determined. Effects of sorbent and sorbate properties, solvent 
      composition (ultrapure water, acidogenic and methanogenic leachates), and contact 
      time ("aging") on desorption rates were evaluated. Hydrophobic organic 
      contaminant (HOC) desorption from PVC and HDPE could be described with a 
      single-parameter polymer diffusion model. In contrast, a three-parameter, 
      biphasic polymer diffusion model was required to describe HOC desorption rates 
      from biopolymer composites. In general, HOC desorption rates from plastics were 
      rapid for HDPE (D = 10(-10) cm(2)/s), a rubbery polymer, but slower for PVC (D = 
      10(-13)-10(-14) cm(2)/s), a glassy polymer. For biopolymer composites, a large 
      fraction of sorbed HOCs was rapidly released (D(r) = 10(-9)-10(-10) cm(2)/s) 
      while the remaining fraction desorbed slowly (D(s) = 10(-11)-10(-16) cm(2)/s). 
      The toluene desorption rate from PVC was 1 order of magnitude faster in 
      acidogenic leachate than in either ultrapure water or methanogenic leachate, a 
      result that was primarily attributed to the plasticizing effect of volatile fatty 
      acids in acidogenic leachate. For biopolymer composites, small increases in the 
      slowly desorbing HOC fraction were observed with increasing aging time.
FAU - Saquing, Jovita M
AU  - Saquing JM
AD  - Department of Civil, Construction,and Environmental Engineering, North Carolina 
      State University, Raleigh, NC 27695-7908, USA. jmsaquing@gmail.com
FAU - Mitchell, Lisa A
AU  - Mitchell LA
FAU - Wu, Bingyan
AU  - Wu B
FAU - Wagner, Travis B
AU  - Wagner TB
FAU - Knappe, Detlef R U
AU  - Knappe DR
FAU - Barlaz, Morton A
AU  - Barlaz MA
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Environmental Pollutants)
RN  - 0 (Xylenes)
RN  - 3FPU23BG52 (Toluene)
RN  - TJ904HH8SN (Tetrachloroethylene)
RN  - Z2474E14QP (2-xylene)
SB  - IM
MH  - Environmental Pollutants/chemistry
MH  - Molecular Structure
MH  - *Refuse Disposal
MH  - Tetrachloroethylene/*chemistry
MH  - Toluene/*chemistry
MH  - Xylenes/*chemistry
EDAT- 2009/12/31 06:00
MHDA- 2010/04/27 06:00
CRDT- 2009/12/31 06:00
PHST- 2009/12/31 06:00 [entrez]
PHST- 2009/12/31 06:00 [pubmed]
PHST- 2010/04/27 06:00 [medline]
AID - 10.1021/es9030672 [doi]
PST - ppublish
SO  - Environ Sci Technol. 2010 Feb 1;44(3):1123-9. doi: 10.1021/es9030672.