Biodegradation of xylene and butyl acetate using an aqueous-silicon oil two-phase system |
| |
Authors: | H Gardin J M Lebeault A Pauss |
| |
Institution: | (1) Département de Génie Chimigue, Université de Technologie de Compiéne, BP 20.529, 60205 Compiégne cedex, France |
| |
Abstract: | A stable microbial population, consisting of seven bacterial strains and three yeast strains, was selected in batch cultures
on a mixture of ortho and meta-xylene and butyl acetate as the sole source of carbon and energy. This population can completely
degrade up to 10 g/L of a mixture of these xenobiotics (70% xylene and 30% butyl acetate wt/wt) in a two-phase aqueous-silicone
oil system (70%/30% vol/vol) within 96 h, while for the usual one-phase system very low growth degradation rates were observed.
Further organic solvents were tested and finally, silicon oil was selected as the best organic phase for such a two-phase
system. With periodical pH adjustments to 6.0 in fed-batch mode, the culture showed a global degradation rate of 63 mg L-1 h-1. |
| |
Keywords: | biodegradation butyl acetate selection of microorganisms silicon oil two-phase aqueous-organic system xylene |
本文献已被 SpringerLink 等数据库收录! |
|