Palladium/iron nanoparticles stimulate tetrabromobisphenol a microbial reductive debromination and further mineralization in sediment

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Palladium/iron nanoparticles stimulate tetrabromobisphenol a microbial reductive debromination and further mineralization in sediment
	Lin, Xiao-Qiu; Li, Zhi-Ling; Zhu, Ying-Ying; Chen, Fan; Liang, Bin; Nan, Jun; Wang, Ai-Jie
刊名	ENVIRONMENT INTERNATIONAL
	2020-02
卷号	135 页码:1-8
关键词	Tetrabromobisphenol A Pd/Fe nanoparticles Reductive debromination Biostimulation Mineralization
ISSN号	0160-4120
英文摘要	Tetrabromobisphenol A (TBBPA) has aroused serious pollution in surface sediment. To date, whether and how iron-based nanoparticles could stimulate TBBPA in situ anaerobic biodegradation in sediment remains poorly understood. In this study, the distinctly enhanced TBBPA degradation activity with the rate constant k improved 4.7 times by fed with Pd/Fe nanoparticles (0.412 g L-1 dosage, 0.5 wt% Pd loading) was observed. TBBPA degradation first went through reductive dehalogenation with bisphenol A (BPA) as the metabolites, and after the addition of Pd/Fe nanoparticles, BPA was further degraded to 4-(allene)phenol and 2,2-bis(4-hydroxyphenyl) propanoic acid via UPLC-QTOF-MS analysis, suggesting the complete detoxification potential. By the addition of Pd/Fe nanoparticles, the large amount of H-2 production (560 times higher) and the significant inhibition of methane generation facilitated the metabolism of potential reductive dehalogenators (Desulfovibrio, Clostridium, etc.), demonstrated by their increased ecological abundance and the tighter cooperative interrelations between each other. Meanwhile, the addition of Pd/Fe nanoparticles largely promoted the ecological abundance of Fe(III) reducing and aromatics degrading bacteria (Bacillus, Cryptanaerobacter, etc.), resulting in BPA further degradation. The bacterial ecological network further revealed that the potential BPA degrading bacteria shared the more positive interactions with the potential dehalogenators in the presence of Pd/Fe nanoparticles. The study firstly revealed the addition of Pd/Fe nanoparticles obviously enhanced the respiratory metabolic activities and cooperative interrelations of reductive dehalogenators and BPA degraders, which gives suggestions for in situ remediation and detoxification of BFRs in contaminated sediment.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45196]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
推荐引用方式 GB/T 7714	Lin, Xiao-Qiu,Li, Zhi-Ling,Zhu, Ying-Ying,et al. Palladium/iron nanoparticles stimulate tetrabromobisphenol a microbial reductive debromination and further mineralization in sediment[J]. ENVIRONMENT INTERNATIONAL,2020,135:1-8.
APA	Lin, Xiao-Qiu.,Li, Zhi-Ling.,Zhu, Ying-Ying.,Chen, Fan.,Liang, Bin.,...&Wang, Ai-Jie.(2020).Palladium/iron nanoparticles stimulate tetrabromobisphenol a microbial reductive debromination and further mineralization in sediment.ENVIRONMENT INTERNATIONAL,135,1-8.
MLA	Lin, Xiao-Qiu,et al."Palladium/iron nanoparticles stimulate tetrabromobisphenol a microbial reductive debromination and further mineralization in sediment".ENVIRONMENT INTERNATIONAL 135(2020):1-8.