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Biodegradation Kinetics of Acenaphthene by Sphingobacterium Sp. Strain RTSB Isolated from a Petroleum-contaminated Soil


Affiliations
1 Department of Chemistry, Sreegopal Banerjee College, Bagati, Magra, Hooghly 712 148, India
 

Acenaphthene metabolism was previously reported by a Gram-negative Sphingobacterium sp. strain RTSB. The degradation pathway was found to proceed involving the key intermediate 1-naphthoic acid and processed via trans-3-carboxy-2-hydroxybenzylidenepyruvic acid to salicylic acid and catechol. The present article demonstrates the biodegradation kinetics of acenaphthene along with the fate of some of the major metabolites, 1-naphthoic acid, 1-acenaphthenol, 1-acenaphthenone, acenaphthenequinone, salicylic acid, and catechol; where, the maximum accumulated amount of 1-naphthoic acid measured was 302.1 mg l–1 during the mid-log stage of growth. The degradation of acenaphthene was observed to follow a first order kinetic model with a rate constant 0.528 d–1 and halflife of 1.31 days.

Keywords

Acenaphthene, Biodegradation, Kinetic Study, 1-Naphthoic Acid, Sphingobacterium Sp.
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  • Biodegradation Kinetics of Acenaphthene by Sphingobacterium Sp. Strain RTSB Isolated from a Petroleum-contaminated Soil

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Authors

Somnath Mallick
Department of Chemistry, Sreegopal Banerjee College, Bagati, Magra, Hooghly 712 148, India

Abstract


Acenaphthene metabolism was previously reported by a Gram-negative Sphingobacterium sp. strain RTSB. The degradation pathway was found to proceed involving the key intermediate 1-naphthoic acid and processed via trans-3-carboxy-2-hydroxybenzylidenepyruvic acid to salicylic acid and catechol. The present article demonstrates the biodegradation kinetics of acenaphthene along with the fate of some of the major metabolites, 1-naphthoic acid, 1-acenaphthenol, 1-acenaphthenone, acenaphthenequinone, salicylic acid, and catechol; where, the maximum accumulated amount of 1-naphthoic acid measured was 302.1 mg l–1 during the mid-log stage of growth. The degradation of acenaphthene was observed to follow a first order kinetic model with a rate constant 0.528 d–1 and halflife of 1.31 days.

Keywords


Acenaphthene, Biodegradation, Kinetic Study, 1-Naphthoic Acid, Sphingobacterium Sp.

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DOI: https://doi.org/10.18520/cs%2Fv120%2Fi5%2F926-931