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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Li, Shan Chen, You-Peng Li, Chun Guo, Jin-Song Fang, Fang Gao, Xu |
| Description | Country affiliation: China Author Affiliation: Li S ( Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment of MOE, Chongqing University, China.) |
| Abstract | Free ammonia (FA) plays a significant role in the stable, long-term, completely autotrophic nitrogen removal over nitrite (CANON) system operation. The influence of FA on the CANON process in a sequencing batch biofilm reactor was explored. Under controlled FA concentrations of 5.0 mg L(-1) to 10.0 mg L(-1), nitrite-oxidizing bacteria (NOB) was inhibited and achieved partial nitrification, which was important for a successful and quick start-up of the CANON process from activated sludge. However, NOB was acclimated to the condition after the process start-up. Ammonia-oxidizing bacteria (AOB) and anaerobic ammonium-oxidizing bacteria (AnAOB) activities were unaffected when FA concentration was increased from 10 mg L(-1) to 17 mg L(-1), but NOB was completely inhibited only for a short time. The AOB and AnAOB activities were inhibited and the CANON system was deteriorated when FA concentration reached 30 mg L(-1) to 32.5 mg L(-1) at pH 8.5, whereas NOB activity was unaffected. Correlation analysis showed that FA concentration higher than 20 mg L(-1) resulted in the deterioration of the system. |
| File Format | HTM / HTML |
| ISSN | 02732289 |
| Issue Number | 4 |
| Volume Number | 167 |
| e-ISSN | 15590291 |
| Journal | Applied Biochemistry and Biotechnology |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2012-06-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Biochemistry Discipline Biotechnology Ammonia Pharmacology Bacteria Drug Effects Metabolism Bioreactors Microbiology Nitrites Nitrogen Isolation & Purification Autotrophic Processes Biofilms Hydrogen-ion Concentration Oxidation-reduction Time Factors Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Molecular Biology Environmental Engineering Biochemistry Bioengineering Applied Microbiology and Biotechnology Biotechnology |
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