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STUDY ON THE STRAIN OF PHENOL-DEGRADING BACTERIUM C-14-1 AND ITS DEGRADING CAPABILITY

Yalei Zhang

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Abstract

An aerobic bacterial strain Nocardia sp.C-14-1 was isolated from an acrylic fiber wastewater.It was identified to have good phenol-degrading capability after acclimating.The bacterium growth and phenol degradation was measured by UV spectrophotometer.Results showed the lag period was extended when increasing the concentration of phenol, but still shorter than that of reported strains.At 35℃ and at log period, the shorter degrading time for 600 mg·L-1 phenol was within 20 hours.The degradation of phenol happened in log period and the optimum conditions were 35℃, pH 7～8 and aeration.The degrading dynamics was well recorded with Andrews equation.

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What this paper is about

An aerobic bacterial strain Nocardia sp.C-14-1 was isolated from an acrylic fiber wastewater.It was identified to have good phenol-degrading capability after acclimating.The bacterium growth and phenol degradation was measured by UV spectrophotometer.Results showed the lag period was extended when increasing the concentration of phenol, but still shorter than that of reported strains.At 35℃ and at log period, the shorter degrading time for 600 mg·L-1 phenol was within 20 hours.The degradation of phenol happened in log period and the optimum conditions were 35℃, pH 7～8 and aeration.The degrading dynamics was well recorded with Andrews equation.

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Available abstract

An aerobic bacterial strain Nocardia sp.C-14-1 was isolated from an acrylic fiber wastewater.It was identified to have good phenol-degrading capability after acclimating.The bacterium growth and phenol degradation was measured by UV spectrophotometer.Results showed the lag period was extended when increasing the concentration of phenol, but still shorter than that of reported strains.At 35℃ and at log period, the shorter degrading time for 600 mg·L-1 phenol was within 20 hours.The degradation of phenol happened in log period and the optimum conditions were 35℃, pH 7～8 and aeration.The degrading dynamics was well recorded with Andrews equation.

Key concepts: Phenol, Strain (injury), Aeration, Degradation (telecommunications), Chemistry, Biodegradation, Bacteria, Wastewater

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