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Water Sci Technol ; 49(5-6): 173-9, 2004.
Article in English | MEDLINE | ID: mdl-15137421

ABSTRACT

In order to develop a new type of anaerobic digestion process equipped with a nitrogen removal function, denitrification of nitrate nitrogen (NO3-N) in anaerobic acidogenesis of organic fraction of municipal waste (OFMSW) was investigated by two semi-continuous reactors. Reactor 1 and Reactor 2 were fed by 3% and 7% of solids concentration of synthetic garbage, respectively. Generation of nitrogen gas (N2) and ammonium nitrogen (NH4-N) was simultaneously observed in the low load of nitrate (NO3-N) (below 0.68 g NO3-N/L). In Reactor 1, ammonium nitrogen generation decreased as the addition of nitrate increased. Finally, the increase of the addition of nitrate resulted in the increase of acetic acid production.


Subject(s)
Bacteria, Anaerobic/physiology , Bioreactors , Nitrogen/isolation & purification , Refuse Disposal/methods , Water Pollutants/isolation & purification , Gases/analysis , Nitrates/analysis , Quaternary Ammonium Compounds/analysis
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