Abstract
A novel 2D strain that could effectively degrade di-n-butylphthalate (DBP) and its major metabolite, phthalic acid (PA), was isolated from compost and identified as Providencia sp. 2D. A complete degradation of DBP (200 mg L−1) was observed within 3 days under optimal conditions obtained by response surface methodology. This strain 2D could utilize various phthalic acid esters (PAEs) as substrates for growth, and could co-metabolize DBP in the presence of extra C sources. A novel combination of two common pathways in PA degradation was proposed for DBP degradation pathway, representing the first report of two ring cleavage pathways of the intermediate PA in a microbial species. Strain 2D efficiently enhanced the removal rate of DBP in contaminated soil with a sharp decrease of the DBP half-life compared to non-bioaugmentation treatments. Moreover, the addition of compost improved the degradation rate of DBP in soil by stimulating microbial activity. The results support the feasibility of remediating DBP-contaminated soils inoculated with strain 2D and treated with compost.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.