TY - JOUR
T1 - Short- and long-term effects of temperature on the Anammox process
AU - Dosta, J.
AU - Fernández, I.
AU - Vázquez-Padín, J. R.
AU - Mosquera-Corral, A.
AU - Campos, J. L.
AU - Mata-Álvarez, J.
AU - Méndez, R.
N1 - Funding Information:
The authors wish to thank the Spanish Government for the fund provided (Biogramem project CTQ2005-04935/PPQ). The authors are also grateful for the predoctoral grants received from the Spanish Government (Joan Dosta and José Ramón Vázquez Padín) and the Xunta de Galicia (Isaac Fernández).
PY - 2008/6/15
Y1 - 2008/6/15
N2 - The application of the Anammox process has been usually focused on the treatment of wastewater with temperatures around 30 °C in order to operate under optimum conditions. In this work, the feasibility of the application of the Anammox process at lower temperatures has been tested. First, the short-term effects of temperature on the Anammox biomass were studied using batch tests. An activation energy of 63 kJ mol-1 was calculated and the maximum activity was found at 35-40 °C. Activity tests done at 45 °C showed an irreversible loss of the activity due to the biomass lysis. A SBR was operated at different temperatures (from 30 to 15 °C) to determine the long-term effects. The system was successfully operated at 18 °C but when temperature was decreased to 15 °C, nitrite started to accumulate and the system lost its stability. Adaptation of biomass to low temperatures was observed when the specific activities obtained during first batch tests are compared to those obtained during the operation of the SBR.
AB - The application of the Anammox process has been usually focused on the treatment of wastewater with temperatures around 30 °C in order to operate under optimum conditions. In this work, the feasibility of the application of the Anammox process at lower temperatures has been tested. First, the short-term effects of temperature on the Anammox biomass were studied using batch tests. An activation energy of 63 kJ mol-1 was calculated and the maximum activity was found at 35-40 °C. Activity tests done at 45 °C showed an irreversible loss of the activity due to the biomass lysis. A SBR was operated at different temperatures (from 30 to 15 °C) to determine the long-term effects. The system was successfully operated at 18 °C but when temperature was decreased to 15 °C, nitrite started to accumulate and the system lost its stability. Adaptation of biomass to low temperatures was observed when the specific activities obtained during first batch tests are compared to those obtained during the operation of the SBR.
KW - Anammox
KW - Sequencing batch reactor (SBR)
KW - Specific Anammox activity (SAA)
KW - Temperature
UR - http://www.scopus.com/inward/record.url?scp=43049131798&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2007.10.082
DO - 10.1016/j.jhazmat.2007.10.082
M3 - Article
C2 - 18063297
AN - SCOPUS:43049131798
SN - 0304-3894
VL - 154
SP - 688
EP - 693
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1-3
ER -