Palladium/iron nanoparticles stimulate tetrabromobisphenol a microbial reductive debromination and further mineralization in sediment
文献类型：期刊论文
| 作者 | Lin, Xiao-Qiu; Li, Zhi-Ling; Zhu, Ying-Ying; Chen, Fan; Liang, Bin; Nan, Jun; Wang, Ai-Jie |
| 刊名 | ENVIRONMENT INTERNATIONAL
 |
| 出版日期 | 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. |
| 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. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。