TY - JOUR
T1 - Removal of pharmaceuticals using combination of UV/H2O 2/O3 advanced oxidation process
AU - Lester, Y.
AU - Avisar, D.
AU - Gozlan, I.
AU - Mamane, H.
PY - 2011
Y1 - 2011
N2 - Water and wastewater effluents contain a vast range of pharmaceutical chemicals. The present study aims to determine the potential of the advanced oxidation technology UV/H2O2/O3 and its sub-processes (i.e. UV, UV/H2O2, UV/O3, O 3 and H2O2/O3) for the degradation of the antibiotics ciprofloxacin (CIP) and trimethoprim (TMP), and the antineoplastic drug cyclophosphamide (CPD) from water. Creating AOP conditions improved in most cases the degradation rate of the target compounds (compared with O3 and UV alone). H2O2 concentration was found to be an important parameter in the UV/H2O2 and H2O2/O3 sub-processes, acting as •OH initiator as well as •OH scavenger. Out of the examined processes, O3 had the highest degradation rate for TMP and H2O2/O3showed highest degradation rate for CIP and CPD. The electrical energy consumption for both CIP and CPD, as calculated using the EEO parameter, was in the following order: UV>UV/O3 > UV/H2O2/O3 > O3 > H2O2/O3. Whereas for TMP O3 was shown to be the most electrical energy efficient. Twelvedegradation byproducts were identified following direct UV photolysis of CIP.
AB - Water and wastewater effluents contain a vast range of pharmaceutical chemicals. The present study aims to determine the potential of the advanced oxidation technology UV/H2O2/O3 and its sub-processes (i.e. UV, UV/H2O2, UV/O3, O 3 and H2O2/O3) for the degradation of the antibiotics ciprofloxacin (CIP) and trimethoprim (TMP), and the antineoplastic drug cyclophosphamide (CPD) from water. Creating AOP conditions improved in most cases the degradation rate of the target compounds (compared with O3 and UV alone). H2O2 concentration was found to be an important parameter in the UV/H2O2 and H2O2/O3 sub-processes, acting as •OH initiator as well as •OH scavenger. Out of the examined processes, O3 had the highest degradation rate for TMP and H2O2/O3showed highest degradation rate for CIP and CPD. The electrical energy consumption for both CIP and CPD, as calculated using the EEO parameter, was in the following order: UV>UV/O3 > UV/H2O2/O3 > O3 > H2O2/O3. Whereas for TMP O3 was shown to be the most electrical energy efficient. Twelvedegradation byproducts were identified following direct UV photolysis of CIP.
KW - Advanced oxidation
KW - Byproducts
KW - EEO
KW - Ozone
KW - Pharmaceuticals
KW - Photodegradation photolysis
UR - http://www.scopus.com/inward/record.url?scp=84055191073&partnerID=8YFLogxK
U2 - 10.2166/wst.2011.079
DO - 10.2166/wst.2011.079
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AN - SCOPUS:84055191073
SN - 0273-1223
VL - 64
SP - 2230
EP - 2238
JO - Water Science and Technology
JF - Water Science and Technology
IS - 11
ER -
