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Role of agitation conditions in nitrification
Author(s) -
Novak Lawrence T.
Publication year - 1979
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260210811
Subject(s) - nitrite , chemistry , nitrification , nitrobacter , volume (thermodynamics) , kinetics , chromatography , reaction rate constant , nitrogen , analytical chemistry (journal) , thermodynamics , organic chemistry , nitrate , physics , quantum mechanics
The objective of this study was to determine the role of agitation conditions in the oxidation of nitrite ions by Nitrobacter . Batch reaction kinetic experiments were conducted in baffled stirred tanks. The range of agitation conditions studied was 6200 ↔ 95700 ergs/cm 3 sec. This power input corresponds to 3.2 ↔ 45.6 hp/ 1000 gal, or a “hem Scale” of 3 ↔ 9. After a lag phase, the reaction kinetics were found to be zero order with respect to nitrite over a concentration range of 590 to 10 mg/liter nitrite nitrogen (NO 2 − ‐N). The zero‐order rate constants were found to significantly decrease with increasing impeller power input per volume of liquid ( P / V ).