| Title |
Long-term effects of multi-walled carbon nanotubes on the performance and microbial community structures of an anaerobic granular sludge system
|
|---|---|
| Published in |
Applied Microbiology and Biotechnology, August 2018
|
| DOI | 10.1007/s00253-018-9273-1 |
| Pubmed ID | |
| Authors |
Xiaohui Wang, Minghan Zhu, Feifei Li, Congxuan Zhang, Xiaobiao Zhu |
| Abstract |
Multi-walled carbon nanotubes (MWCNTs) released into the sewage may cause negative and/or positive effects on the treatment system. The objective of this study was to explore over 110 days' effect of MWCNTs on the performance of anaerobic granular sludge and microbial community structures in an upflow anaerobic sludge blanket (UASB) reactor. The results showed that MWCNTs had no significant effect on the removal of chemical oxidation demand (COD) and ammonia in UASB reactor, but the total phosphorus (TP) removal efficiency increased by 29.34%. The biogas production of the reactor did not change. The anaerobic granular sludge tended to excrete more EPS to resist the effects of MWCNTs during the long-term impact. Illumina MiSeq sequencing of 16S rRNA gene revealed that MWCNTs did not affect the microbial diversity, but altered the composition and structure of microbial community in the reactor. In this process, Saccharibacteria replaced Proteobacteria as the highest abundant bacterial phylum. MWCNTs promoted the differentiation of methanogen structure, resulting in increase of Methanomassiliicoccus, Methanoculleus, and the uncultured WCHA1-57. These results indicated that MWCNTs impacted the performance of UASB reactor and the structures of the microbial community in anaerobic granular sludge. |
Mendeley readers
The data shown below were compiled from readership statistics for 20 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 20 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 2 | 10% |
| Professor > Associate Professor | 2 | 10% |
| Researcher | 2 | 10% |
| Student > Ph. D. Student | 1 | 5% |
| Student > Bachelor | 1 | 5% |
| Other | 0 | 0% |
| Unknown | 12 | 60% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 5 | 25% |
| Agricultural and Biological Sciences | 1 | 5% |
| Immunology and Microbiology | 1 | 5% |
| Engineering | 1 | 5% |
| Unknown | 12 | 60% |