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Int. J. Environ. Res. Public Health 2015, 12(10), 13510-13522; doi:10.3390/ijerph121013510

Biodegradation of di-n-Butyl Phthalate by Achromobacter sp. Isolated from Rural Domestic Wastewater

1
Key Laboratory of Environmental Biotechnology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
2
Environmental Protection Bureau of Shijiazhuang City, Shijiazhuang 050021, China
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: Miklas Scholz
Received: 17 August 2015 / Revised: 6 October 2015 / Accepted: 16 October 2015 / Published: 26 October 2015
View Full-Text   |   Download PDF [1019 KB, uploaded 26 October 2015]   |  

Abstract

A bacterial strain W-1, isolated from rural domestic wastewater, can utilize the environmental hormone di-n-butyl phthalate (DBP) as the sole carbon and energy source. The isolated bacterium species was confirmed to belong to the genus Achromobacter based on its 16S rRNA gene sequence. The results of substrate utilization tests showed that the strain W-1 could utilize other common phthalates and phenol. High-performance liquid chromatography analysis revealed that the optimal conditions for DBP degradation were pH 7.0, 35 °C, and an agitation rate of 175 rpm. Under these conditions, 500 mg/L of DBP was completely degraded within 30 h. The effects of heavy metals (50 mg/L Cu2+ and 500 mg/L Pb2+) and surfactants (100 mg/L SDS and 500 mg/L Tween 20) on DBP degradation were investigated. The results demonstrated that Cu2+ and SDS severely inhibited DBP degradation and Pb2+ weakly inhibited DBP degradation, while Tween 20 greatly enhanced DBP degradation. Furthermore, phthalate degradation genes were found to be located on a plasmid present in Achromobacter sp. W-1. View Full-Text
Keywords: biodegradation; di-n-butyl phthalate; environmental hormone; Achromobacter; heavy metals; surfactants biodegradation; di-n-butyl phthalate; environmental hormone; Achromobacter; heavy metals; surfactants
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jin, D.; Kong, X.; Li, Y.; Bai, Z.; Zhuang, G.; Zhuang, X.; Deng, Y. Biodegradation of di-n-Butyl Phthalate by Achromobacter sp. Isolated from Rural Domestic Wastewater. Int. J. Environ. Res. Public Health 2015, 12, 13510-13522.

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