Effect of Penicillin on Nitrite-Oxidizing Bacteria in Activated Sludge |
| |
Authors: | Shao-Hui Zhang III" target="_blank">Francis L de los ReyesIII |
| |
Institution: | (1) School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, People’s Republic of China;(2) Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC 27695-7908, USA; |
| |
Abstract: | The effects of penicillin G on the number and activity of nitrite-oxidizing bacteria were investigated in laboratory-scale
reactors and batch tests. At a concentration of 100 mg L−1, addition of penicillin G for short periods did not significantly affect nitrite oxidation, while addition for more than
2 months suppressed nitrite oxidation. Fluorescence in situ hybridization with 16S ribosomal RNA-targeted probes revealed
a slight decrease in the abundance of Nitrospira, while Nitrobacter was not affected by addition of penicillin G for more than 39 days. The resistance of nitrite-oxidizing bacteria to penicillin
appeared to be positively affected by intermittent aeration only when accompanied by denitrification; otherwise, the aeration
mode (continuous or intermittent aeration) did not significantly affect the abundance of Nitrobacter and Nitrospira. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|