Title :
Photodegradation of Acetaminophen in Secondary Effluent of Sewage Treatment Plant under Simulated Sunlight Irradiation
Author :
Liu, Yanxiang ; Tong, Yiling ; Liu, Junxia
Author_Institution :
Sch. of Chem. & Environ. Eng., Jianghan Univ., Wuhan, China
Abstract :
The presence of pharmaceutical compounds in surface waters is an emerging environmental issue. This study investigated the photodegradation of acetaminophen (ACTP) in secondary effluent of a sewage treatment plant (STP) under simulated sunlight irradiation. ACTP can be quickly photodegradated in STP effluents, the degradation reaction was fitted well into the first-order kinetic. Effects of pH values, ACTP initial concentration and the addition of active species, such as iron ions, nitrate ions, and humic acid (HA) were also discussed. Results showed that the photodegradation apparent rate constant (kobs) and efficiency (%) was promoted in the presence of Fe3+ and nitrate, and the photodegradation was retarded in the presence of HA.
Keywords :
drugs; effluents; photolysis; reaction rate constants; water pollution control; Fe3+ ion; acetaminophen; active species; apparent rate constant; first-order kinetic reaction; humic acid; iron ions; nitrate ions; pharmaceutical compounds; photodegradation; secondary effluent; sewage treatment plant; simulated sunlight irradiation; Biodegradation; Chemical compounds; Effluents; Iron; Kinetic theory; Organisms; Pharmaceuticals; Sewage treatment; Surface treatment; Water;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5517910
