| Keyword search (4,163 papers available) | ![]() |
"Wang X" Authored Publications:
| Title: | Amorphous Cu/Fe nanoparticles with tandem intracellular and extracellular electron capacity for enhancing denitrification performance and recovery of co-contaminant suppressed denitrification | ||||
| Authors: | Fu J, Guo T, Li H, Liu W, Chen Z, Wang X, Guo J | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/39542060/ | ||||
| DOI: | 10.1016/j.biortech.2024.131812 | ||||
| Publication: | Bioresource technology | ||||
| Keywords: | Acceleration mechanism; Community structure; Electron transfer; Metagenomic sequencing; NO(3)(-)-N; | ||||
| PMID: | 39542060 | Category: | Date Added: | 2024-11-15 | |
| Dept Affiliation: |
ENCS
1 School of Environmental and Municipal Engineering, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China. 2 School of Civil Engineering and Architecture, Taizhou University, Taizhou 318000, China. 3 Department of Building, Civil, and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. W. Montreal, Quebec, Canada. 4 School of Civil Engineering and Architecture, Taizhou University, Taizhou 318000, China. Electronic address: wangxiaoping624@163.com. 5 School of Civil Engineering and Architecture, Taizhou University, Taizhou 318000, China. Electronic address: jianbguo@163.com. |
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Description: |
In this study, a functionally stable insoluble Cu/Fe nanoparticles (Cu/Fe NPs) were synthesized and applied denitrification with different contaminants. The results showed that 50 mg/L Cu/Fe NPs increased NO3--N reduction rate up to 14.3 mg/(L·h) about 3 folds compared with the control system (4.7 mg/(L·h)), and Cu/Fe NPs exhibited excellent restorative effects on NO3--N reduction under the stress of Cd2+, Nitrovin and Methyl Orange. Meanwhile, electrochemical analyses, enzyme activities, and related genes abundance together showed that pilus, cytochrome c and flavin mononucleotide were electron carriers to tandem extracellular and intracellular, increasing electron flux acting on NO3--N in the respiratory chain. Metagenomic sequencing showed that microbial metabolic activity, electroactive bacteria (EAB) abundance with bi-directional electron transfer and Cu/Fe-compatible bacterial abundance were increased. Furthermore, denitrification performance was maintained by establishing C-EAB-Cu/Fe NPs cycling network. This study provided insights and applications for expanding the use of insoluble mediators in denitrification systems. |



