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HERO ID
44187
Reference Type
Journal Article
Title
Biodegradation of potential diesel oxygenate additives: dibutyl maleate (DBM), and tripropylene glycol methyl ether (TGME)
Author(s)
Marchetti, AA; Knize, MG; Chiarappa-Zucca, ML; Pletcher, RJ; Layton, DW
Year
2003
Is Peer Reviewed?
Yes
Journal
Chemosphere
ISSN:
0045-6535
EISSN:
1879-1298
Volume
52
Issue
5
Page Numbers
861-868
Language
English
PMID
12757787
DOI
10.1016/s0045-6535(03)00293-5
Web of Science Id
WOS:000183737300009
Abstract
The addition of oxygen-bearing compounds to diesel fuel considerably reduces particulate emissions. TGME and DBM have been identified as possible diesel additives based on their physicochemical characteristics and performance in engine tests. Although these compounds will reduce particulate emissions, their potential environmental impacts are unknown. As a means of characterizing their persistence in environmental media such as soil and groundwater, we conducted a series of biodegradation tests of DBM and TGME. Benzene and methyl tertiary butyl ether (MTBE) were also tested as reference compounds. Primary degradation of DBM fully occurred within 3 days, while TGME presented a lag phase of approximately 8 days and was not completely degraded by day 28. Benzene primary degradation occurred completely by day 3 and MTBE did not degrade at all. The total mineralized fractions of DBM and TGME achieved constant values as a function of time of approximately 65% and approximately 40%, respectively. Transport predictions show that, released to the environment, DBM and TGME would concentrate mostly in soils and waters with minimal impact to air. From an environmental standpoint, these results combined with the transport predictions indicate that DBM is a better choice than TGME as a diesel additive.
Keywords
Bacteria, Aerobic; Benzene/metabolism; Biodegradation, Environmental; Carbon Dioxide/analysis; Gasoline/*analysis; Maleates/*metabolism; Methyl Ethers/chemistry/*metabolism; Propylene Glycols/chemistry/*metabolism; Reference Standards; Sewage/microbiology; Soil Pollutants/analysis; Waste Disposal, Fluid/methods; Water Pollutants, Chemical/analysis; 0 (Gasoline); 0 (Maleates); 0 (Methyl Ethers); 0 (Propylene Glycols); 0 (Sewage); 0 (Soil Pollutants); 0 (Water Pollutants, Chemical); 105-76-0 (dibutyl maleate); 124-38-9 (Carbon Dioxide); 71-43-2 (Benzene)
Tags
OPPT
•
Glycols
Literature Search
Human Health
PubMed (private)
WOS (private)
Fate
WOS (private)
Environmental Hazard
WOS (private)
Proquest (private)
•
Propylene glycol ethers (88917-22-0 & 55934-93-5)
Literature Search
Environmental Hazard
Proquest (private)
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