PMID- 22850276
OWN - NLM
STAT- MEDLINE
DCOM- 20130411
LR  - 20131121
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 90
IP  - 2
DP  - 2013 Jan
TI  - The effect of aging on the bioavailability of toluene sorbed to municipal solid 
      waste components.
PG  - 251-9
LID - S0045-6535(12)00883-1 [pii]
LID - 10.1016/j.chemosphere.2012.06.062 [doi]
AB  - Past practice of co-disposing priority pollutants with municipal solid waste 
      (MSW) has led to the placement of more than 150 MSW landfills in the US on the 
      National Priorities List of Superfund. Interactions between organic contaminants 
      and MSW constituents and the effects of these interactions on contaminant fate 
      are poorly understood. The objective of this study was to evaluate the effects of 
      sorbate-sorbent aging time and sorbent decomposition on toluene bioavailability 
      and fate. The bioavailability of (14)C-toluene sorbed to individual MSW 
      constituents [office paper, newsprint, model food and yard waste, high density 
      polyethylene (HDPE), and poly(vinyl chloride) (PVC)] was evaluated after aging 
      times of 1, 30, and 180 d. Biodegradable sorbents were tested in both fresh and 
      anaerobically degraded forms to evaluate the effect of sorbent decomposition. At 
      the termination of bioavailability tests, the distribution of (14)C that was not 
      converted to (14)CO(2) was measured by sequential lipophilic solvent and base 
      extractions of sorbents followed by combustion of extracted sorbents. Increasing 
      the toluene-sorbent aging time reduced the rate of toluene biodegradation for all 
      MSW components except for HDPE. (14)C remaining in sorbents at the completion of 
      bioavailability tests was physically sequestered within and/or covalently bound 
      to sorbent organic matter, and this fraction increased with increasing aging 
      time. Up to 18.6% of (14)C was associated with humic matter (humic and fulvic 
      acids, humin) at the completion of bioavailability tests.
CI  - Copyright (c) 2012 Elsevier Ltd. All rights reserved.
FAU - Chen, Ye
AU  - Chen Y
AD  - Department of Civil, Construction, and Environmental Engineering, Box 7908, North 
      Carolina State University, Raleigh, NC 27695-7908, USA. yechenn@yahoo.com
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.
DEP - 20120731
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Soil Pollutants)
RN  - 0 (Solid Waste)
RN  - 3FPU23BG52 (Toluene)
SB  - IM
MH  - Adsorption
MH  - Biodegradation, Environmental
MH  - Kinetics
MH  - Models, Chemical
MH  - Soil Pollutants/analysis/*chemistry
MH  - *Solid Waste
MH  - Toluene/analysis/*chemistry
EDAT- 2012/08/02 06:00
MHDA- 2013/04/12 06:00
CRDT- 2012/08/02 06:00
PHST- 2012/03/24 00:00 [received]
PHST- 2012/06/10 00:00 [revised]
PHST- 2012/06/18 00:00 [accepted]
PHST- 2012/08/02 06:00 [entrez]
PHST- 2012/08/02 06:00 [pubmed]
PHST- 2013/04/12 06:00 [medline]
AID - S0045-6535(12)00883-1 [pii]
AID - 10.1016/j.chemosphere.2012.06.062 [doi]
PST - ppublish
SO  - Chemosphere. 2013 Jan;90(2):251-9. doi: 10.1016/j.chemosphere.2012.06.062. Epub 
      2012 Jul 31.