The effects of LMWOAs on biodegradation of multi-component PAHs in aqueous solution using dual-wavelength fluorimetry

Biodegradation of dissolved fluorene (Flu), phenanthrene (Ph) and pyrene (Py), three polycyclic aromatic hydrocarbons (PAHs), singly or as a mixture of the three, by two bacterial strains, MEBIC 5140 ( Mycobacterium flavescens) and MEBIC 5141 ( Mycobacterium scrofulaceum), as well as the effects of...

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Bibliographic Details
Published in:Environmental pollution (1987) 2009-11, Vol.157 (11), p.3150-3157
Main Authors: Wei, Xing-Yuan, Sang, Ling-Zi, Chen, Jia-Ning, Zhu, Ya-Xian, Zhang, Yong
Format: Article
Language:English
Subjects:
Acids - chemistry
Acids - metabolism
Applied sciences
Aqueous solutions
Bacteria
Biodegradation
Biodegradation, Environmental
Biological and physicochemical properties of pollutants. Interaction in the soil
Butyric acid
Citric acid
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Fluorimetry
Fluorometry - instrumentation
Fluorometry - methods
Low molecular weight organic acids
Molecular Weight
Mycobacterium - metabolism
PAHs
Phenanthrene
Pollution
Pollution, environment geology
Polyallylamine hydrochloride
Polycyclic Aromatic Hydrocarbons - metabolism
Soil and sediments pollution
Solutions - chemistry
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Summary:Biodegradation of dissolved fluorene (Flu), phenanthrene (Ph) and pyrene (Py), three polycyclic aromatic hydrocarbons (PAHs), singly or as a mixture of the three, by two bacterial strains, MEBIC 5140 ( Mycobacterium flavescens) and MEBIC 5141 ( Mycobacterium scrofulaceum), as well as the effects of low molecular weight organic acids (LMWOAs), e.g. malic acid, citric acid and butyric acid on biodegradation of the three PAHs in mineral salts medium aqueous solution were investigated using a newly established dual-wavelength fluorimetric method. The results showed that biodegradation processes can be monitored simultaneously, quickly and simply by dual-wavelength fluorimetry. Both co-metabolism and inhibitory effects were found during the biodegradation of the three PAHs by MEBIC 5140 and MEBIC 5141. Positive effects of butyric acid and negative effects of citric acid on biodegradation of the three PAHs in a mixture were observed. Biodegradation processes of dissolved multi-component PAHs in a mixture and effects of LMWOAs were investigated using a dual-wavelength fluorimetry.
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2009.05.012