Abstract
Continuous denitrification of nitrate-contaminated groundwater containing dissolved oxygen (DO), SO4 2-, and no buffer was carried out with three identical electrochemically activated biofilm reactors. The reactors consisted primarily of denitrifying biofilm attached to the surface of the cathode, an amorphous carbon employed as the anode, and a DC power supply. In the reactors, denitrification and neutralization caused by H2 and CO2 produced from the cathode and the anode, respectively, occurred simultaneously when an electric current was applied. A complete-mix reactor model coupled with a biofilm-electrode model was developed in conjunction with a limiting-current theory. When the biofilms were sufficiently acclimated and adapted to the electric current, the denitrification performance calculated using the model was in fairly good agreement with experimental results.
| Original language | English |
|---|---|
| Pages (from-to) | 61-68 |
| Number of pages | 8 |
| Journal | Water Science and Technology |
| Volume | 36 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1997 |
| Externally published | Yes |
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Keywords
- Biofilm model
- Biofilm-electrode system
- Denitrification
- Drinking water
- Electric current
- Ground water
- Hydrogen
- Neutralization
- Nitrate
- Reactor model
ASJC Scopus subject areas
- Water Science and Technology
Cite this
The denitrification and neutralization performance of an electrochemically activated biofilm reactor used to treat nitrate-contaminated groundwater. / Sakakibara, yutaka; Araki, K.; Watanabe, T.; Kuroda, M.
In: Water Science and Technology, Vol. 36, No. 1, 1997, p. 61-68.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The denitrification and neutralization performance of an electrochemically activated biofilm reactor used to treat nitrate-contaminated groundwater
AU - Sakakibara, yutaka
AU - Araki, K.
AU - Watanabe, T.
AU - Kuroda, M.
PY - 1997
Y1 - 1997
N2 - Continuous denitrification of nitrate-contaminated groundwater containing dissolved oxygen (DO), SO4 2-, and no buffer was carried out with three identical electrochemically activated biofilm reactors. The reactors consisted primarily of denitrifying biofilm attached to the surface of the cathode, an amorphous carbon employed as the anode, and a DC power supply. In the reactors, denitrification and neutralization caused by H2 and CO2 produced from the cathode and the anode, respectively, occurred simultaneously when an electric current was applied. A complete-mix reactor model coupled with a biofilm-electrode model was developed in conjunction with a limiting-current theory. When the biofilms were sufficiently acclimated and adapted to the electric current, the denitrification performance calculated using the model was in fairly good agreement with experimental results.
AB - Continuous denitrification of nitrate-contaminated groundwater containing dissolved oxygen (DO), SO4 2-, and no buffer was carried out with three identical electrochemically activated biofilm reactors. The reactors consisted primarily of denitrifying biofilm attached to the surface of the cathode, an amorphous carbon employed as the anode, and a DC power supply. In the reactors, denitrification and neutralization caused by H2 and CO2 produced from the cathode and the anode, respectively, occurred simultaneously when an electric current was applied. A complete-mix reactor model coupled with a biofilm-electrode model was developed in conjunction with a limiting-current theory. When the biofilms were sufficiently acclimated and adapted to the electric current, the denitrification performance calculated using the model was in fairly good agreement with experimental results.
KW - Biofilm model
KW - Biofilm-electrode system
KW - Denitrification
KW - Drinking water
KW - Electric current
KW - Ground water
KW - Hydrogen
KW - Neutralization
KW - Nitrate
KW - Reactor model
UR - http://www.scopus.com/inward/record.url?scp=0030771172&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030771172&partnerID=8YFLogxK
U2 - 10.1016/S0273-1223(97)00323-5
DO - 10.1016/S0273-1223(97)00323-5
M3 - Article
VL - 36
SP - 61
EP - 68
JO - Water Science and Technology
JF - Water Science and Technology
SN - 0273-1223
IS - 1
ER -