TY - GEN
T1 - Degradation of the endocrine disruptor carbofuran by UV, O3 and O3/UV
AU - Lau, T. K.
AU - Chu, Wei
AU - Graham, N.
PY - 2007/8/13
Y1 - 2007/8/13
N2 - The photodegradation of a carbamate insecticide, Carbofuran (CBF), which has been recognised as a potential endocrine disrupting chemical, was studied via different wastewater treatment processes. This study has shown the efficiency of advanced oxidation process, AOP (UV/O3) than those of the direct UV photolysis and ozonation process, by completely removing 0.2 mM CBF and achieving 24% mineralisation within 30 min. The initial decay of CBF by UV/O3 accelerated from 0.05 to 0.16 min-1 as the initial pH increasing from 3.0 to 11.3. The pH-dependency of CBF has also been shown in both ozonation and UV/O3 process. A linear relationship could be found for the latter process in all pH, while for the former process, two stages of reactions (steady and accelerating) were found in the acidic and alkaline pH condition, respectively.
AB - The photodegradation of a carbamate insecticide, Carbofuran (CBF), which has been recognised as a potential endocrine disrupting chemical, was studied via different wastewater treatment processes. This study has shown the efficiency of advanced oxidation process, AOP (UV/O3) than those of the direct UV photolysis and ozonation process, by completely removing 0.2 mM CBF and achieving 24% mineralisation within 30 min. The initial decay of CBF by UV/O3 accelerated from 0.05 to 0.16 min-1 as the initial pH increasing from 3.0 to 11.3. The pH-dependency of CBF has also been shown in both ozonation and UV/O3 process. A linear relationship could be found for the latter process in all pH, while for the former process, two stages of reactions (steady and accelerating) were found in the acidic and alkaline pH condition, respectively.
KW - Advanced oxidation process
KW - Carbamates
KW - Carbofuran
KW - Endocrine disruptor
KW - Ozone
KW - Photolysis
UR - http://www.scopus.com/inward/record.url?scp=34547660335&partnerID=8YFLogxK
U2 - 10.2166/wst.2007.416
DO - 10.2166/wst.2007.416
M3 - Conference article published in proceeding or book
C2 - 17674859
SN - 1843395959
SN - 9781843395959
T3 - Water Science and Technology
SP - 275
EP - 280
BT - Oxidation Technologies for Water and Wastewater Treatment IV - Selected Papers of the 4th International Conference on Oxidation Technologies for Water and Wastewater Treatment
ER -