Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 10, Pages 5665-5673Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.02.078
Keywords
Halophilic nitrification; Saline wastewater; Fixed-bed reactors; Free ammonia; Free nitrous acid
Funding
- German Academic Exchange Service DAAD
- Max-Buchner foundation, DECHEMA
Ask authors/readers for more resources
Nitrification under changing salinities (0-9%), temperatures (6-50 degrees C), ammonia (0-5 g N L(-1)) and nitrite concentrations (0-0.4 g N L(-1)) was investigated in fixed-bed reactors. For all conditions ammonia oxidation rates (AOR) were lower than nitrite oxidation rates (NOR). AORs and NORs increased from 12.5 to 40 degrees C and were very low at 6 degrees C and almost zero at 50 degrees C. No recovery of nitrification was obtained after incubation at 50 degrees C, whereas nitrification was restorable after incubation at 6 degrees C. Ammonia concentrations of 5 g N L(-1) or nitrite concentrations up to 0.125 g N L(-1) decreased AOR to almost zero. AORs and NORs recovered if ammonia or nitrite was removed. At concentrations of 1 and 5 g N L(-1) ammonia AOR and NOR were inhibited by 50%, whereas 27 mg N/L nitrite inhibited AOR by 50%. (C) 2011 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available