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EC number: 618-882-6
CAS number: 928771-01-1
The results from an OECD 301B CO2 evolution test (Clarke,
2008) showed that NExBTL renewable diesel was readily biodegradable with
82 % degradation within 28 days. Degradation of alkanes is a widespread
phenomenon in nature, and numerous microorganisms, both prokaryotic and
eukaryotic, capable of utilizing these substrates as a carbon and energy
source have been isolated and characterized (Prince et al, 2002 and
2003, Wentzel et al, 2007).
In mesocosm studies in the marine environment, the half-life n-pentadecane
was found to be 4.3 d at 3-7 °C and 0.8 d at 20-22 °C in surface water
(Mackay et al, 2006). In the same experiment, the half-life of n-heptadecane
was 5 d at 3-7°C and 0.9 d at 20-22°C. The half-life of n-octadecane
was 1.5 d in the Rhine surface water, and 23 d in marine surface water.
Data on half-lives of alkanes in sediments or soils is lacking, however
numerous studies have shown that alkanes are readily biodegradable in
soils and sediments (Hoeppel RE et al, 1991, Hawle-Ambrosch E et al,
2007, Miethe D et al, 1994, Salanitro J, 2001, Sugiura K et al, 1996).
Degradation in soils would be expected to be faster due to higher
temperatures and higher oxygen status compared to sediments. This is
supported by calculations with EUSES model, according to which
degradation of NExBTL renewable diesel in water is
2x103times faster than in soil and 2x105times
faster than in sediment (Table2.3.).
Table2.3.Degradation rates and half-lives of NExBTL renewable diesel in
different environmental compartments estimated using EUSES.
Degradation rate (12 °C) d-1
CONCAWE, 1998, Heavy fuel oils. Product dossier no. 98/109. CONCAWE,
Brussels, May 1998.
Hawle-Ambrosch E, Ripe W, Dornmayr-Pfaffenhuemer M, Radax C, Holzinger A
and Stan-Lotter H, 2007, Biodegradation of fuel oil hydrocarbons by a
mixed bacterial consortium in sandy and loamy soils, Biotechnology
Journal 2(12), 1564-1568.
Hoeppel RE, Hichee RE and Arthur MF, 1991, Bioventing soils contaminated
with petroleum hydrocarbons.J. Indust. Microbiol. 8, 141-146.
Mackay D, Shiu WY, Ma K-C, Lee CS, 2006, Handbook of Physical-chemical
Properties and Environmental Fate for Organic, Volume I, Introduction
and Hydrocarbons, 2nd edition, CRC Press.
Miethe D, Riis V and Babel W, 1994, The relationship between the
microbial activity of the autochthonous microorganisms of pristine and
contaminated soils and their potential for the degradation of mineral
oil hydrocarbons. Acta Biotechnol. 14,131-140.
Prince RC, Owens EH and Sergy GA, 2002, Weathering of an Arctic oil
spill over 20 years: the BIOS experiment revisited. Marine Pollution
Bulletin 44, 1236–1242.
Prince RC, Garrett RM, Bare RE, Grossman MJ, Townsend T, Suflita JM, Lee
K, Owens EH, Sergy GA, Braddock JF, Lindstrom JE, Lessard RR, 2003, The
Roles of photooxidation and biodegradation in long-term weathering of
crude and heavy fuel oils, Spill Science & Technology Bulletin 8(2)
Sugiura K, Ishihara M, Shimauchi T and Harayama S, 1997, Physicochemical
properties and biodegradability of crude oil Environmental Science and
Technology 31(1), 45-51.
Wentzel A, Ellingsen TE, Kotlar H-K, Zotchev SB and Throne-Holst M,
2007, Bacterial metabolism of long-chainn–alkanes, Applied Microbiology
and Biotechnology 76(6) 1209-1221.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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