Abstract
Sulfolobus solfataricus used 2-propanol and 2-propanone (acetone) when grown in static cultures at 78 °C with or without glucose at 10 g l−1. The presence of 3.92 g 2-propanol l−1 in both cases inhibited growth. However, acetone accumulation following 2-propanol depletion suggested that 2-propanol was co-metabolized via the acetone metabolic pathway. Glucose at 10 g l−1 increased 2-propanol and acetone utilization from 0.93 g l−1 to 1.77 g l−1 and from 0.11 g l−1 to 1.62 g l−1, respectively. Without glucose, immobilized S. solfataricus cells increased the 2-propanol removal rate to 0.035 g l−1 h−1, compared to 0.0012 g l−1 h−1 by its suspended counterpart. The results suggest the establishment of an immobilized reactor configuration is preferential for the treatment of high temperature solvent waste streams by this acidothermophilic Crenarchaeon.
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Radianingtyas, H., Wright, P.C. 2-Propanol degradation by Sulfolobus solfataricus . Biotechnology Letters 25, 579–583 (2003). https://doi.org/10.1023/A:1022841016348
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DOI: https://doi.org/10.1023/A:1022841016348