Kinetics of n-butyl benzyl phthalate degradation by a pure bacterial culture from the mangrove sediment

Xiang Rong Xu*, Hua Bin Li, Ji Dong Gu, Xiao Yan Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

n-Butyl benzyl phthalate (BBP) is an endocrine-disrupting chemical. Biodegradation of BBP by a bacterium, Pseudomonas fluorescens B-1, isolated from the mangrove sediment, was investigated. The microorganism can utilize BBP as the sole carbon and energy source, where concentrations of BBP disappeared within 6 days under shake culture conditions. Effects of BBP concentration, pH, temperature, and salinity on BBP biodegradation were studied, respectively. The process of BBP biodegradation was monitored by reversed-phase high-performance liquid chromatography with ultra-violet detection after solid-phase extraction. The biodegradation of BBP could be fitted to a first-order kinetic model. The major metabolites of BBP degradation were identified as mono-butyl phthalate, mono-benzyl phthalate, phthalic acid and benzoic acid by gas chromatography-mass spectrometry, and a preliminary metabolic pathway of BBP was proposed.

Original languageEnglish
Pages (from-to)194-199
Number of pages6
JournalJournal of Hazardous Materials
Volume140
Issue number1-2
DOIs
StatePublished - 9 Feb 2007
Externally publishedYes

Keywords

  • Biodegradation
  • Endocrine-disruptor
  • Kinetics
  • n-Butyl benzyl phthalate
  • Pseudomonas fluorescens B-1

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