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

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5517910

Filename

5517910