TY - JOUR
T1 - Nitrate and pesticide removal by a combined bioelectrochemical/adsorption process
AU - Feleke, Z.
AU - Sakakibara, Y.
PY - 2001
Y1 - 2001
N2 - Biological denitrification and trace pesticide removal in a combined biofilm-electrode reactor/adsorption process has been investigated. In long-term (more than 260 days) continuous experiments, influent and effluent concentrations of nitrate, nitrite, isoprothiolane and gas composition were measured at different electric current and pesticide loading conditions. Experimental results showed that complete and stable denitrification was achieved in BER without accumulation of nitrite and nitrous oxide. Isoprothiolane (IPT) was removed by adsorption onto either granular activated carbon or silicone resin. Removal efficiency of IPT exceeding 97% was achieved and effluent concentration was below the guideline value (40 μg/l). Theoretically predicted effluent concentrations were in good agreement with the observed results. From these results, it is concluded that the combined process is applicable to treat nitrate and pesticide contaminated drinking water. Moreover, from comparison with former studies, different possible options to further enhance the decomposition of pesticide were suggested.
AB - Biological denitrification and trace pesticide removal in a combined biofilm-electrode reactor/adsorption process has been investigated. In long-term (more than 260 days) continuous experiments, influent and effluent concentrations of nitrate, nitrite, isoprothiolane and gas composition were measured at different electric current and pesticide loading conditions. Experimental results showed that complete and stable denitrification was achieved in BER without accumulation of nitrite and nitrous oxide. Isoprothiolane (IPT) was removed by adsorption onto either granular activated carbon or silicone resin. Removal efficiency of IPT exceeding 97% was achieved and effluent concentration was below the guideline value (40 μg/l). Theoretically predicted effluent concentrations were in good agreement with the observed results. From these results, it is concluded that the combined process is applicable to treat nitrate and pesticide contaminated drinking water. Moreover, from comparison with former studies, different possible options to further enhance the decomposition of pesticide were suggested.
KW - Adsorption
KW - Biofilm-electrode reactor
KW - Drinking water
KW - Nitrate
KW - Pesticide
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U2 - 10.2166/wst.2001.0663
DO - 10.2166/wst.2001.0663
M3 - Article
C2 - 11443969
AN - SCOPUS:0034751230
VL - 43
SP - 25
EP - 33
JO - Water Science and Technology
JF - Water Science and Technology
SN - 0273-1223
IS - 11
ER -