Authors: S Mutafov B Angelova HP Schmauder T Avramova L Boyadjieva
Publish Date: 2004/06/18
Volume: 65, Issue: 2, Pages: 228-234
Abstract
The applicability of a recently published modification of the chemostat named “titrostat” for microbial continuousflow purification of toluenecontaminated air is discussed This article describes the operative range and the toluene elimination efficiency of a 2l titrostat running with a mixed bacterial culture dominated by two Acinetobacter species A calcoaceticus and A radioresistens The study focuses on the kinetics and stoichiometry of the process Special attention is paid to the peculiarities of toluene as an unconventional growth substrate having high carbon and energy content Removal productivity as high as 224 g l−1 h−1 with 999 elimination efficiency was observed at air flow rate 60 l h−1 temperature 32°C pH 62 toluene concentration in the inlet air 374 mg l−1 and titrant solution containing NH3 at 187 g l−1 The maximum biomass yield from assimilated toluene Ysm=0880±0011 and a rate of substrate expenditures for cell maintenance ms=0022±0002 h−1 were estimated
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