Aerobic Degradation Characteristics and Mechanism of Decabromodiphenyl Ether (BDE-209) Using Complex Bacteria Communities

Dingfan Hu, Juan Wu (), Luosheng Fan, Shunyao Li and Rong Jia
Additional contact information
Dingfan Hu: School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China
Juan Wu: School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China
Luosheng Fan: School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China
Shunyao Li: School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China
Rong Jia: School of Life Sciences, Anhui University, Hefei 230601, China

IJERPH, 2022, vol. 19, issue 24, 1-17

Abstract: Complex bacteria communities that comprised Brevibacillus sp. (M1) and Achromobacter sp. (M2) with effective abilities of degrading decabromodiphenyl ether (BDE-209) were investigated for their degradation characteristics and mechanisms under aerobic conditions. The experimental results indicated that 88.4% of 10 mg L −1 BDE-209 could be degraded after incubation for 120 h under the optimum conditions of pH 7.0, 30 °C and 15% of the inoculation volume, and the addition ratio of two bacterial suspensions was 1:1. Based on the identification of BDE-209 degradation products via liquid chromatography–mass spectrometry (LC–MS) analysis, the biodegradation pathway of BDE-209 was proposed. The debromination, hydroxylation, deprotonation, breakage of ether bonds and ring-opening processes were included in the degradation process. Furthermore, intracellular enzymes had the greatest contribution to BDE-209 biodegradation, and the inhibition of piperyl butoxide (PB) for BDE-209 degradation revealed that the cytochrome P450 (CYP) enzyme was likely the key enzyme during BDE-209 degradation by bacteria M (1+2). Our study provided alternative ideas for the microbial degradation of BDE-209 by aerobic complex bacteria communities in a water system.

Keywords: decabromodiphenyl ether; complex bacteria community; degradation efficiency; pathway; crude enzyme; cytochrome P450 (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/19/24/17012/pdf (application/pdf)
https://www.mdpi.com/1660-4601/19/24/17012/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:19:y:2022:i:24:p:17012-:d:1007139

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().