Effects of surfactants on degradation of phenanthrene by Mycobacterium ssp

Abstract

Abstract: With isotopic techniques, the effects of the concentration,ionic type,and straight chain length of surfactants on the degradation of phenanthrene by Mycobacterium ssp.KR2 were studied. The results showed that in the presence of surfactants, the degradation of phenanthrene was not increased. It was delayed in high concentrations of surfactants (≥20 mg·L^-1). Tween80 in its low concentration(≤10 mg·L^-1) was used as a preferential substrate utilized by Mycobacterium ssp.KR2. The degradation was affected by the ionic types of surfactants, and the inhibition to the phenanthrene degradation was cationic surfactant TDTMA>anionic surfactant LAS>nonionic surfactant Tween80. Different lengths of surfactant straight chains had different influence on the degradation of phenanthrene.

Key words: ¹⁴C-phenanthrene, Mycobacterium, Surfactant

CLC Number:

X172

JIANG Xia, OU Ziqing, YING Peifeng, Ayfer Yediler, Antonious Ketrrup . Effects of surfactants on degradation of phenanthrene by Mycobacterium ssp[J]. Chinese Journal of Applied Ecology, 2003, (11): 2011-2014.

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