Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 825-836 |
| Number of pages | 12 |
| Journal | Environmental Technology |
| Volume | 13 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 1992 |
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Denitrification in anaerobic digesters : possibilities and influence of wastewater COD/N-NOX ratio. / Akunna, Joseph C.; Bizeau, C.; Moletta, R.
In: Environmental Technology, Vol. 13, No. 9, 09.1992, p. 825-836.Research output: Contribution to journal › Article
TY - JOUR
T1 - Denitrification in anaerobic digesters
T2 - possibilities and influence of wastewater COD/N-NOX ratio
AU - Akunna, Joseph C.
AU - Bizeau, C.
AU - Moletta, R.
PY - 1992/9
Y1 - 1992/9
N2 - Laboratory-scale completely-stirred anaerobic digesters were fed with synthetic wastewaters containing nitrate and nitrite and with glucose as the only source of organic carbon in order to investigate and compare the denitrification potentials of anaerobic digesters in the presence of nitrate and nitrite. Varying the input nitrate and nitrite concentration at fixed COD and HRT, methane production without denitrification occurred at COD/N-NOX > 53; denitrification and methane production at 8.86 ≤ COD/N-NOX≤ 53 and only denitrification at COD/N-NOX <8.86. At COD/N-NOX > 53, ammonification appeared to be the main nitrate and nitrite reduction pathway. The successful competition of ammonia formers over the true denitrifiers at high ratios was attributed to the low initial nitrate and nitrite concentrations.
AB - Laboratory-scale completely-stirred anaerobic digesters were fed with synthetic wastewaters containing nitrate and nitrite and with glucose as the only source of organic carbon in order to investigate and compare the denitrification potentials of anaerobic digesters in the presence of nitrate and nitrite. Varying the input nitrate and nitrite concentration at fixed COD and HRT, methane production without denitrification occurred at COD/N-NOX > 53; denitrification and methane production at 8.86 ≤ COD/N-NOX≤ 53 and only denitrification at COD/N-NOX <8.86. At COD/N-NOX > 53, ammonification appeared to be the main nitrate and nitrite reduction pathway. The successful competition of ammonia formers over the true denitrifiers at high ratios was attributed to the low initial nitrate and nitrite concentrations.
U2 - 10.1080/09593339209385217
DO - 10.1080/09593339209385217
M3 - Article
VL - 13
SP - 825
EP - 836
JO - Environmental Technology (United Kingdom)
JF - Environmental Technology (United Kingdom)
SN - 0959-3330
IS - 9
ER -