Kinetics of high strength phenol degradation using Bacillus brevis.
A strain of Bacillus brevis has been isolated and identified based on biochemical results. Phenol biodegradation in a batch reactor was studied using the pure culture of B. brevis. The isolated strain was optimized for various environmental conditions and the biodegradation of phenol was maximum at pH 8.0, 5% (v/v) of inoculum size and without any co-substrate. The kinetics of biodegradation according to Haldane's equation micro = micromaxS/(Ks + S + (S2/Ki)) adequately describes cell growth with kinetic constants in the ranges micromax = 0.026-0.078 h(-1), Ks =2.2-29.31 mg/l, Ki = 868.0-2434.7 mg/l. These values are specific for this organism and we have compared with literature for pure or mixed cultures degrading phenol.
Arutchelvan
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Department of Civil Engineering, Annamalai University, Annamalainagar 608002, India. vaagas@rediffmail.com
Kanakasabai
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Elangovan
R
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Nagarajan
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Muralikrishnan
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V
D001407:Bacillus / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors; D007220:Industrial Waste; D019800:Phenol / Q000032:analysis / Q000378:metabolism*; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D014867:Water; D019800:Phenol