The effect of CO2 concentration on a nitrifying chalk reactor

The effect of CO2 concentration on nitrification rate was studied in a fluidized bed reactor using chalk (solid calcium carbonate) as the biomass carrier and buffering agent. Using one chalk type and uniform particle size, carbon dioxide was found to limit the nitrification rate in the reactor at co...

Full description

Saved in:
Bibliographic Details
Published in:Water research (Oxford) 2002-04, Vol.36 (8), p.2147-2151
Main Authors: GREEN, Michal, RUSKOL, Yuri, SHAVIV, Avi, TARRE, Sheldon
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Biological treatment of waters
Biomass
Bioreactors
Biotechnology
Calcium Carbonate - chemistry
Carbon Dioxide - chemistry
Environment and pollution
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General purification processes
Hydrogen-Ion Concentration
Industrial applications and implications. Economical aspects
Nitrogen - metabolism
Pollution
Wastewaters
Water treatment and pollution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of CO2 concentration on nitrification rate was studied in a fluidized bed reactor using chalk (solid calcium carbonate) as the biomass carrier and buffering agent. Using one chalk type and uniform particle size, carbon dioxide was found to limit the nitrification rate in the reactor at concentrations up to 0.3 mmol l(-1). At this concentration the nitrification rate was about 2.5-2.7g NH4+-Nl reactor(-1) d(-1). The pH established in the reactor varied between 4.5 and 5.5, remarkably with lower pH obtained remarked at higher nitrification rates. Kinetic parameters for nitrification rate with CO2 as the rate limiting substrate were determined: a Michaelis-Menten constant, Km, of 0.013 mmol l(-1) CO2 and a maximum ammonium oxidation rate of 2.33g NH4+-Nl reactor(-1) d(-1).
ISSN:0043-1354
1879-2448
DOI:10.1016/s0043-1354(01)00423-7