Article

Effect of non-aqueous phase liquid on biodegradation of PAHs in spilled oil on tidal flat.

Department Material Science and Chemical System Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527 Japan.
Water Science & Technology (impact factor: 1.12). 02/2003; 47(7-8):243-50. pp.243-50
Source: PubMed

ABSTRACT Biodegradation rates of polycyclic aromatic hydrocarbons (PAHs) in spilled oil stranded on tidal flats were studied using model reactors to clarify the effects of NAPL on the biodegradation of PAHs in stranded oil on tidal flat with special emphasis on the relationship between dissolution rates of PAHs into water and viscosity of NAPL. Biodegradation of PAHs in NAPL was limited by the dissolution rates of PAHs into water. Biodegradation rate of chrysene was smaller than that for acenaphthene and phenanthrene due to the smaller dissolution rates. Dissolution rates of PAHs in fuel oil C were smaller those in crude oil due to high viscosity of fuel oil C. Therefore, biodegradation rates of PAHs in fuel oil C were smaller than those in crude oil. Biodegradation rates of PAHs in NAPL with slow decrease rate like fuel oil C were slower than those in NAPL with rapid decrease like crude oil. The smaller decrease rate of fuel oil C than crude oil was due to higher viscosity of fuel oil C. Therefore, not only the dissolution rate of PAHs but also the decrease rates of NAPL were important factors for the biodegradation of PAHs.

0 0
 · 
0 Bookmarks
 · 
20 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

acenaphthene
 
biodegradation
 
Biodegradation rate
 
Biodegradation rates
 
clarify
 
crude oil
 
decrease rates
 
dissolution rate
 
Dissolution rates
 
factors
 
fuel oil C
 
model reactors
 
polycyclic aromatic hydrocarbons
 
rapid decrease
 
slow decrease rate
 
smaller decrease rate
 
smaller dissolution rates
 
special emphasis
 
tidal flat
 
tidal flats
 

T Kose