A Novel Method for Enhancing Strains’ Biodegradation of 4-Chloronitrobenzene

Tian Li, Tian C. Zhang, Lin He

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

This paper introduces a novel approach to enhance the strains’ biodegradation of 4-chloronitrobenzene by utilizing the synergistic effect of the organic reductant mannitol and the substrate beef extraction. Our results demonstrate that 4-chloronitrobenzene could not be an available nitrogen source to support target strains’ growth, which induced the limited 4-chloronitrobenzene biodegradation. In addition, the organic reducing agent and substrate had a better synergistic effect than inorganic reducing agent and substrate to enhance the strains’ 4-chloronitrobenzene cometabolic biodegradation. Employing the synergistic effect of the optimal mixture (mannitol and beef extraction), the biodegradation rates of 50 mg L−1 4-chloronitrobenzene by seven of the ten target strains were enhanced up to 100% from previous removals of no more than 19.1% after 7 days. Three of the strains could even completely degrade 100 mg L−1 4-chloronitrobenzene while five strains degraded over 91.4%. The method has good potential to enhance bioremediation of various 4-Chloronitrobenzene-contaminated environments as mannitol and beef extraction are non-toxic to the environment.

Original languageEnglish (US)
Pages (from-to)8-16
Number of pages9
JournalJournal of Biotechnology
Volume264
DOIs
StatePublished - Dec 20 2017

Keywords

  • 4-Chloronitrobenzene
  • Cometabolic biodegradation
  • Method
  • Nitrogen source
  • Organic reducing agent
  • Synergistic effect

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

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