Biodegradation of 2,2' 4,4-tetrabromodiphenyl Ether in an Aerobic Environment by a Novel Strain of Bacillus sp.

Abstract:

The environmental safety of 2,2,4,4-tetrabromodiphenyl ether (BDE-47), a widely used flame retardant, has been the topic of controversial discussions during the past decade years. In this study, we investigated the BDE-47 degradation by a novel bacteria obtained from electronic waste recycling site soil sample in Taizhou, China. Using biochemical characteristics and 16S rDNA gene sequencing, the strain was closely related to Bacillus sp. with a 99% 16S rDNA gene sequence similarity. It could use BDE-47 as the sole carbon source and energy source for its growth. The optimal growth environment was in the presence of BDE-47 at concentrations to 50-200 ug/L, pH 6.0 to 8.0 and 37°C when agitated at 160 rpm. For the initial concentrations of 100 ug/L, 50% of the BDE-47 was degraded. This is the first report of BDE47-degrading strain from the genus of Bacillus sp. under aerobic condition.

• Periodical: Advanced Materials Research (Volume 771)
• Pages: 45-49
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.771.45
• Online since: September 2013
• Authors: Jian Fei Guan, Ji Hua Wang, Xiang Liu, Jia Xin, Shan Shan Zhang, Dan Zhu
• Keywords: Bacillus sp, BDE-47, Biodegradation

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